Series Zefiro - Arfit · Series Zefiro 1.3 1.2.1 Internal structure The internal structure is made from galvanised sheet metal and is 0.8 mm or 1 mm thick, depending on the

Ventilconvettori Fan coil units Ventilconvecteurs Klimatruhen

Technical Manual Cod. AER.MT.Z.GB.005.03/09

Series Zefiro

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i

Series Zefiro

SUMMARY

1. SERIES ZEFIRO / GENERAL 1.1 Fan coil units ………………………………………………….………………………………… 1.1 1.2 Fan coil unit components ………………...………………………………………………………. 1.2 1.2.1 Internal Structure ……………………………………………………………..………………….. 1.3 1.2.2 Exchanger ………………………..……………………………………….…………………… 1.3 1.2.3 Intake air filter ……………………………..……………………………….……………………. 1.4 1.2.4 Casing ………………………………………………………….…………….…………………… 1.4 1.2.5 Fan Assembly ……………………………………………………………………………………. 1.5 1.2.6 Control box ……………………………………..……….…………………..……………………. 1.5 1.2.7 Auxiliary drain ……………………………………..……………………………………..…... 1.6 2.MODELS and DIMENSIONS 2.1 VA- HA Models - Vertical and horizontal fan coil units with casing …………….…. 2.1 2.2 VB – HB Models - Vertical and horizontal fan coil units with casing and accessible front air

inlet ……………………………………………………………………. 2.2

2.3 VL - HL Models - Vertical and horizontal fan coil units with casing and accessible front air inlet

2.2

2.4 VC,VD, VE,VF,HC,HD Models - Built-in fan coil units …………..…………………. 2.3 2.5 Dimensions and Weights ………………………………………………...……………………… 2.4 2.6 How to order ……………………………………………………………………………………... 2.11 2.6.1 Identifying the model …………………………………….……………………………………….. 2.11 2.6.2 Selection information ……………………………………………………………………………. 2.11

3.PERFORMANCES 3.1 Air flow ……………………………………………………………….…………………………. 3.1 3.2 Cooling capacity for three standard speeds…………………………….………………….….. 3.3 3.3 Heating capacity for three standard speeds ………………….……………………………….. 3.4 3.4 Cooling capacity of the direct expansion coils ……………….……………..…………………. 3.7 3.5 Pressure drops in exchangers ………………………………………….…………………….. 3.8 3.6 Water content of the coils ……… ………………………………………………………………. 3.9 3.7 Electrical characteristics of motors …………………………………..………………………... 3.9 3.8 Noise Emissions …………………………………………………….……………………………... 3.10 3.8.1 Power Sound level by octave band …………………………………….……………………………. 3.10 3.8.2 Pressure Sound level in a closed room …………………..……………………………………….. 3.11 3.8.3 Variation in sound pressure depending on the volume of the room and the reverberation

time…………………………………………………………………………………………….. 3.12

3.8.4 Variation in sound pressure according to distance …………………………………….. 3.12 3.8.5 Noise curves (NR)………………………………………………………………………………. 3.13

4.ACCESSORIES AND VARIANTS 4.1 Operating control devices ………………………………………………………………………. 4.1 4.1.1 TM…………………………………………..……………………………………………………… 4.1 4.1.2 ELMZ ………………………………………………………………………..………………….. 4.2 4.1.3 Instructions how to install the wall controls……………………………………………………… 4.2 4.1.4 CSN……………………………………………………………………………………………. 4.3 4.1.5 SATH……………………………………………………………………………………………. 4.4 4.1.6 TOP 1........................................................................................................................................... 4.6 4.1.7 MCS ………………………………………………………………………………………………. 4.9 4.1.8 AS……………………………………………………………………………………………….. 4.11 4.1.9 Supply Notes ……………………………………………………………………………………….. 4.11 4.2 Heat exchangers ………………………………………………………………………………… 4.12 4.2.1 Direct expansion exchangers BE ………………………………………………………………. 4.12 4.3 Electric heater EH ……………………………………………………………………………….. 4.13 4.4 Regulation valves ………………………………….……………………………………………... 4.14 4.4.1 Valve body …………………………...…………………………………………………………… 4.14 4.4.2 Actuators ………………..………………………………………………………………………… 4.15

ii

Series Zefiro

4.4.3 Assembly kit and lockshields …………………………..……………………………………….. 4.15 4.4.4 Table of available accessory combinations ………………..…………………………………. 4.16 4.5 System accessories ……………………………….……………………………………………….. 4.17 4.5.1 CZ - Pair of feet ……………………………………………………………………………….. 4.17 4.5.2 CZF - Plinth with openable hatch ………………………………………………………………. 4.17 4.5.3 PAE/V, PAE/H - External air shutters for vertical and horizontal models ………………….…. 4.18 4.5.4 PAE/HF External air inlet connection 4.19 4.5.5 PAEM - Motor for external air shutter …………………………………………………..…….. 4.19 4.5.6 PPV, – Rear panels for vertical models ………………………….………………………………. 4.20 4.5.7 PPHA/B- Rear panels for horizontal models …………………..……………………………….… 4.20 4.5.8 PMZE – Delivery plenum with circular connectors ……………………………………………... 4.21 4.5.9 PM 90ZE – Delivery elbow connector …………………..……………………………………... 4.22 4.5.10 RTZE – Delivery telescopic connector ……………….………………………………………….. 4.22 4.5.11 GFM – Fixed delivery grille ……………………………………………………………………... 4.23 4.5.12 GF2 - Dual adjustment delivery grille ………………………………………………………….. 4.23 4.5.13 PACZE - Suction intake plenum ………………………………………………………………... 4.24 4.5.14 PAZE – Suction intake plenum with spigots ………………………………………………………. 4.25 4.5.15 GFA – Fixed suction intake grille ………….…………………………………………………….. 4.25 4.6 Other accessories ………………………………………………………………………………… 4.26 4.6.1 PSCZE – Condensate drain pump …………………………………………………………………. 4.26 4.6.2 FAG3– Special filter ………………………………………….………………………………… 4.26 4.7 Guide to accessories and spare parts ……………………………………………………………. 4.27

5.ELECTRICAL DIAGRAMS 5.1 Fan coil units motors Wiring ……………………………………………… 5.2 5.2 Electrical diagrams ……………………………………………………………… 5.3

6.INSTALLATION AND MAINTENANCE 6.1 Preliminary operations …………………………..……………………………………… 6.1 6.1.1 Models with casing ………………..……………………………………………………………… 6.1 6.2 Wall or ceiling fixing …………………………..………………………………………….. 6.2 6.3 Hydraulic connections ……………………………………………………………………………... 6.4 6.4 Electrical wirings…………………………………………………………………………… 6.5 6.5 Starting up the appliances ………………………………………..……………………………….. 6.5 6.5.1 Delivery grilles and fixing the hatches …………………………………………………….. 6.5 6.6 Alternative layouts ………………………………………………………………………………. 6.6 6.6.1 Inverting the hydraulic connections …………………………………………………………… 6.6 6.6.2 Changing fan speed ………………………………………………………………………………. 6.7 6.7 Maintenance ………………………………………………………………………………………. 6.7 6.7.1 Removing and cleaning the filter ………………………………………………………………... 6.7 6.7.2 Inspection and/or removal of the fan assembly motor (GRV)…………………………………. 6.7 6.8 Examples of typical installations ………………………………………………………………... 6.8

7.APPENDIX – Performance data 7.1 Air flows with external static pressure …………………………………………………………... 7.1 7.2 Heat exchange outputs …………………………………………………………………………… 7.2 7.2.1 Cooling outputs with water coil ………………………………………………………………….. 7.2 7.2.2 Heating outputs with water coil ……………… …………………..……………………………….. 7.3 7.3 Summary graphs cooling outputs ……………………………………………………………….. 7.6 7.4 Summary graphs heating outputs ……………………………………………………………….. 7.11 7.5 Power Sound level at rated air flows ………………………………………………………… 7.20 7.6 Pressure Sound level …………………………………………………………………………….. 7.22 7.7 Working with water –glycol……. …………………………………………………………… 7.24 7.7.1 Concentrations of glycol …………………………………..……………………………………... 7.24 7.7.2 Performance variations with water - glycol ………….………………………………………… 7.24

Series Zefiro

1.1

1. ZEFIRO SERIES / GENERAL 1.1 Fan coil units

A fan coil is an unit designed for room air-conditioning. Heating or cooling is realized by the heat exchange between the air coming in contact with the exchanger and the water flowing inside it. To make this change more effective, a fan force circulates the air across the exchanger (coil). Heat will therefore be added to or subtracted from the air in the room, depending on whether the coil receives hot or cold water from a centralised system.

If sufficiently cold water enters the exchanger, the humidity in the air condenses on the exposed surfaces of the coil, thereby dehumidifying the air in the room. Compressed gas direct expansion coils can also be used to cool and dehumidify the air.

The fan coil unit is fitted with a system for draining the condensed humidity.

A fan coil unit must therefore guarantee:

uniform exploitation of the surface of the exchanger; suitable air flows depending on operating conditions; good condensate insulation; simple condensate drainage; adjustment of water flow in the exchanger.

The fan coil units in Zefiro Series feature: multi-speed motors for optimising air speed; total insulation of the surfaces the treated air comes into contact with; electronic control systems for regulation of the operation

The Zefiro fancoil units can combine different types of exchangers with different types of valves for adjusting the input water and numerous electronic control systems, thereby making them particularly versatile and suitable for the most varied room conditioning requirements. Performance figures in standard operating conditions are shown in the table in chapter 3. The company also has a selection software which helps choose the most suitable fan coil unit for non-standard operating conditions.

Series Zefiro

1.2

1.2 Fan coil unit components (ref. mod. VA)

Key:

1 Internal structure

2 Fan assembly

3 Control box

4 Heat exchanger

5 Auxiliary drain collector

6 Removable grill + cover

7 Metallic casing

8 Plastic flanks

9 Filter

Series Zefiro

1.3

1.2.1 Internal structure The internal structure is made from galvanised sheet metal and is 0.8 mm or 1 mm thick, depending on the purpose each part of it serves. The rear part features slots for wall-mounting. The hexagonal hole next to the water connections prevents the coil manifolds from twisting if the pipe unions are over-tightened. Main condensate collector is incorporated in fan assembly for vertical models. It can be removed independently of the fan assembly for horizontal models. Its double sloping shape allows the water to be drained when the fan coil unit is installed either horizontally or vertically. All the components are lagged with M1 class fireproof material Horizzontal drain pans are painted.

1.2.2 Exchanger The exchangers are made with aluminium fins screwed onto copper tubes. The manifolds feature ½" GF connections. All the coils are subjected to a 30 bar tightness test and are designed to withstand a maximum operating pressure of 10 bar. The Zefiro fan coil units can incorporate water circulation coils with and, when required for systems with dual input lines (hot/cold), an additional one row coil may be added. Three-row R134A or R407C direct expansion coils can also be mounted on the Silent series of fan coil units. The connections to the coolant input line comprise various diameters of copper tubes. The corrugated shape of the coil fins and the parallel circulation feature of the water or coolant compared with the direction of the air offer improved heat exchange effectiveness and efficiency. For further details and information, please consult paragraph 4.2.

Series Zefiro

1.4

1.2.3 Intake air filter (FA) The filter is nylon (G1 class), it is housed in a metal frame. Regular filter cleaning ensures perfect performance. For special uses, filters with higher filtering characteristics, classe G3 can be supplied on request. The filters are 195 mm high while their lengths depend on the size of the fan coil unit (see following table) Size 308-316-320 628-634 840-847-1250-1260 1575 1885

length [mm] 510 770 1030 1290 1550

thickness [mm] 6 VL-HL only 465X165 725X165 975X165 1225X165 1475X165 1.2.4 Casing (CAB) The casing is made of painted sheet metal and ABS. Front metal painted pannel is fixed to the structure with screws and can painted in various colours of the RAL range (the standard colour is RAL 9010). In case of different colours, conctact the factory for the offer and the delivery time. Heat and deformation proof ABS grilles are mounted on the delivery line. Their special chemical composition preserves their colour (RAL 9002) and long-term efficiency. The grilles are shaped in order to optimise air distribution in the room. Their press fit assembly allows them to be inverted to distribute the air in another way. Two hatches for accessing the control panel (if fitted) and for inspecting the connections and any feed valves are mounted on the sides of the fan coil unit delivery. These hatches can be fixed to the body with screws hidden by special plugs in order to prevent access being made (installation in schools, public areas, etc.) The grilles and hatches are protected to flame class UL94 HB.

.

Hatch for accessing the control panel

Plastic stopper to hide the fixing screws

Grilles for outlet air in Zefiro

Series Zefiro

1.5

1.2.5 Fan assembly (GRV) The fan assembly comprises a plate on which the fans and the motor are installed. The motor support brackets are damped to prevent the transmission of vibrations. The centrifugal fan impellers are made from aluminium and are directly splined to the motor shaft while the screws are made from galvanised sheet metal. The standard single-phase motors are powered at 230 V and 50 Hz; 60 Hz motors can also be supplied on request. The motors are fitted with a permanent condenser and an automatically resettable overload cut-out, and are protected by IP20 or 44 only on customer’s request. The entire fan assembly is electronically balanced and can easily be removed from the fan coil unit, independently from the other components, thereby allowing inspections and extraordinary cleaning operations to be carried out.

The following table shows the number of fans and the diameters of the impellers for each fan unit in the Zefiro series.

Size 308 316 320 628 634 840 847 1250 1260 1575 1885 Fan speeds wiring Autotransformer Slot Nr. of fans 1 2 3 φ impeller [mm] 146

All fan assemblies feature six operating speeds, 3 pre-wired standard speeds and three alternative speeds which can be obtained by simply changing the electrical connections.

The six speeds are obtained by using an autotransformer on Zefiro 308…1260, while for models 1575-1885 the six speeds are directly wired to the motor winding. 1.2.6 Control box The control box contains the electronic board and protects terminal boards for connection to the supply mains and to various accessories that can be installed inside it. These electronic components can also be mounted to the wall by appropriate plastic boxes. The built-in box is made of galvanised sheet metal and its top side is fixed to an ABS facade on which control devices are inserted. It is not necessary to disconnect the electronic connections of the fan assembly to move the box to the opposite side. For casing models, the control box can be accessed from the relative hatch. The box is fire protected to UL94HB and electrically protected to IP41. Zefiro fan coil serie has a number of accessories ranging from simple speed control devices to multi-function control devices, including automatic fan speeds control and valve control. Please consult paragraphs 2.6.2 and 4.1 (cont.) for further information

CSN

TOP1SATH

CONTROL DEVICES

Unit flank

sheet metal Box

ABS facade with controls

Series Zefiro

1.6

1.2.7 Auxiliary drain (ADPZ) The auxiliary drain is standard supplied on all fan coil units; it is made in ABS, fire protected to UL94 HB; it collects and drains the condensate formed around the valve units. Auxilary drain is the same for vertical and horizontal models. It is fitted to the fan coil side by special slots and fixed with screws; check it has been correctly installed by spraying some water onto side/collector gasket.

2.1

Series Zefiro

2 MODELS AND DIMENSIONS 2.1 VA - HA Models – Vertical and horizontal fan coil units with

casing Vertical (VA) and horizontal (HA) versions can be interchanged by simply replacing the main collector. The construction drawings are identical (cf. par. 2.5)

Constructive features:

front/rear swivel grilles; available in 11 sizes (308…1885); 2, 3 or 4 rows coils depending on size; 1 row separated coil for heating on demand for all coils;

colour: plastic components RAL 9002; metallic components RAL 9010

HA

VA

2.2

Series Zefiro

2.2 VB - HB Models - Vertical and horizontal fan coil units with casing and accessible front air inlet

Vertical (VB) and horizontal (HB) versions have frontal air inlet obtained from added skirting board. They can be interchanged by simply changing the main collector. The filter is easily accessible for cleaning and maintenance through a hatch located on the lower part of the body. The construction drawings are identical (cf. par. 2.5)

Constructive features:

front/rear swivel grilles; available in 11 sizes (308…1885); 2, 3 or 4 rows coils depending on size; 1 row separated coil for heating can be added on demand for all coils;

colour: plastic components RAL 9002; metallic components RAL 9010

can be directly installed to the floor

HB

VB

2.3 VL - HL Models - Vertical and horizontal fan coil units with casing

and accessible front air inlet The construction drawings are identical (cf. par. 2.5) Constructive features:

front/rear swivel grilles; available in 11 sizes (308…1885); 2, 3 or 4 rows coils depending on size; 1 row separated coil for heating can be added on demand for all coils; colour: plastic components RAL 9002; metallic components RAL 9010 can be directly installed to the floor or to the wall.

VL

2.3

Series Zefiro

2.4 VC, VD, VE, VF, HC, HD Models – Built-in fan coil units Zefiro Series comprises six different built-in models: four with vertical outlet and two with frontal outlet.

VC

VERTICAL Suction from the bottom – Outlet from the top HORIZONTAL Suction from the back – frontal outlet

VD

HD

VERTICAL Frontal Suction – Outlet from the top HORIZONTAL Suction from the bottom – Frontal outlet

VE

VF VERTICAL Suction from the bottom – Frontal outlet VERTICAL Frontal suction – Frontal outlet

Constructive drawings are identical (cf. par. 2.5). Constructive features:

available in 11 sizes (308…1885); 2, 3 or 4 rows coils depending on the size; 1 row separated coil for heating can be added on demand for all coils;

HC

2.4

Series Zefiro

2.5 Dimensions and Weights The following tables indicate the dimensions and weights of the various sizes of Zefiro fan coil units..

PESI (kg)

Mod. MODELLI

AD INCASSO

MODELLI CON

CABINET

308 14 16

316 15 17

320 16 18

628 19 22

634 20 23

840 23 27.5

847 24 29

1250 23 27.5

1260 24 29

1575 29 35

vert

ical

i

1885 29 35

308 14 16

316 15 17

320 16 18

628 19 22

634 20 23

840 23 27.5

847 24 29

1250 23 27.5

1260 24 29

1575 29 35

oriz

zont

ali

1885 29 35

DIMENSIONI (mm)

Mod A B C

308 860 518 746

316 860 518 746

320 860 518 746

628 1120 778 1006

634 1120 778 1006

840 1380 1038 1266

847 1380 1038 1266

1250 1380 1038 1266

1260 1380 1038 1266

1575 1640 1298 1526

1885 1640 1298 1526

MOD CASE SUCTION OUTLET VA YES From the bottom From the top VB YES Frontal From the top VC NO From the bottom From the top VD NO Frontal From the top VE NO From the bottom Frontal VF NO Frontal Frontal HA YES From the back Frontal HB YES From the bottom Frontal HC NO From the back Frontal HD NO From the bottom Frontal

2.5

Series Zefiro

VERTICAL MODELS

A1 = CONDENSATE DRAIN CONNECTION ø 20mm

2.6

Series Zefiro


In case of unit without particular controls or accessories, this quota can be reduce to 20mm (PA104)

2.7

Series Zefiro


In case of unit without particular controls or accessories, this quota can be reduce to 20mm (PA104)

2.8

Series Zefiro


CONNECTIONS 1/2" FEMALE

legenda :

: IN OUT batteria principale : IN OUT main coil : IN OUT hauptbatterie : IN OUT batterie principale : IN OUT batera principal

2.9

Series Zefiro

A1

ASPIRAZIONE

MANDATA

A1 = attacco scarico condensa Ø 16mm

HORIZONTAL MODELS

CONNECTIONS ½” Female

SUCTION

OUTLET

A1 = CONDENSATE DRAIN CONNECTION Ф 16mm

2.10

Series Zefiro

2.11

Series Zefiro

2.6 How to order

2.6.1 Identifying the model An example of the code required to identify and order the selected model is shown below:

2.6.2 Selection information The following notes make easier to choose the right kind of fan coil unit; further details are shown in later chapters. Please contact our technical department for further information. a) The colour choice for the colour of the body, grilles and hatches Standard colours are: metallic components RAL 9010 ; plastic components RAL 9002.

b) ) Choosing the position of the hydraulic connections Unless otherwise required, the hydraulic connections are on the right of the coil (right-hand connections mean the connections to the right of an observer looking at the front of the installed appliance). The fan coil unit can be supplied with left-hand connections on request and at no extra charge. It is always possible to change the position of the connections, even on location, by following the instructions shown in paragraph 6.6.1 and in the instructions booklet supplied with each fan coil unit. c) Choosing the size and type of coil Chapter 3 of this manual is a guide to the choice of the size of fan coil unit depending on the thermodynamic requirements calculated for the room in which the appliance will be installed. It describes the air/hydraulic, thermodynamic and noise characteristics of the Zefiro appliances. There is also a selection programme for non-standard fan coil operating conditions. It is possible to fit heat exchangers with 2, 3 or 4 on the models installed with single feed line systems (2 pipes). For dual feed line systems (4 pipes), in addition to the above coils it is also possible to mount an auxiliary coil (B1) with one row (just for heating). All coils just seen are fed by hot or cold water; direct expansion coils (BE) are also available. This type of coils can also be combined with the one-row auxiliary coil (water). For further details, please consult paragraph 4.2.

ZE 316 VA SX CSN

MODEL VA e HA VB e HB VC e HC VD e HD VE e VF VL e HL

SIZE 308 316 320 628 634 840 847 1250 1260 1575 1885

CONNECTIONS SIDE DX = right (std) SX = left (looking at the machine when installed)

ACCESSORIES Consult chapter 4 of this manual or the price list

2.12

Series Zefiro

d) Choosing the electrical heating element EH Alternatively to the additional coil B1, electrical heating elements (EH) made from low surface loading aluminium, featuring manually resettable safety thermostats can be installed. The heating elements are only mounted on coils with 2 or 3 rows, they are available with various power levels depending on the size of the fan coil and a power interface relay (EHR) must be fitted to ensure they work safely. This is supplied separately at an extra charge. Please consult paragraph 4.3 for further information. f) Choosing accessories The Zefiro range offers a wide selection of accessories which considerably increase the scope of the appliances. The whole range is described in detail in chapter 4. Some components, divided by typology, are described below.

Electrical accessories for operating control In the absence of accessories, an insulated terminal board (PA104) is mounted on all Zefiro Series fan coils in order to shunt the speeds of the fan assembly and connect the unipotential conductor (PE). If any accessories are mounted, PA 104 should be replaced with a metal electrical panel containing terminals (QB) or an elementary plastic box. Zefiro fan coil units can work with accessories incorporated in the electrical control panel and with other remote accessories installed on the wall. These can be installed on the machine; in this case, BI should be added to the accessory order code. Further details are contained in paragraph 4.1 and the following ones.

Hydraulic accessories All models can be fitted with: - 2 way/2 gate ON/OFF valves - 3 way/4 gate ON/OFF valves - modulating valves Check valves (lockshields) can be installed up-line from the valve assemblies. Technical details, assembly diagrams and order codes can be found in paragraph 4.4 and the following ones. Other accessories To adapt Zefiro fan coil units to the various system layouts, a wide range of various shapes and sizes of plenums, unions, panels, grilles and accessories are available on request. The technical department is able to design and construct other non-standard elements. (See paragraph 4.5 and the following ones).

_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________

3.1

Series Zefiro

3. PERFORMANCES This chapter illustrates the performance levels of Zefiro fan coil units in their standard operating conditions. For further operating data, please refer to the Appendix of this manual (chapter 7) or consult the selection software that can be obtained on request. 3.1 Air Flow The flow data contained in the following table were measured on the various sizes of fan coil units installed with casing, delivery grilles and a clean suction filter. The dry bulb temperature and the absolute pressure of the test room equalled 20°C and 1 atm respectively. The special profile of the grilles, aerodynamically designed in order to obtain a low cx value, produces a pressure drop and a consequent 3% decrease in load compared with fan coil units working without grilles. Consequently, the built-in models (without suction grille) and the models with casing and grilles have equivalent performance values. The fan speeds are the three standard ones out of the six available .

Size 308 316 320 628 634 840 847 1250 1260 1575 1885

MAX 300 300 300 530 530 730 730 1130 1130 1310 1850 MED 250 235 235 445 445 585 585 1050 1050 1220 1600 MIN

m³/h 175 156 156 300 300 390 390 860 860 1035 1250

The following table indicates the air flows produced by the fan coil units with static delivery pressure. These measurements simulate machine operation in the presence ofpressure drops caused by ducting and the like.

_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________

3.2

Series Zefiro

Pressure [Pa] Size Speed 0 10 20 30 40 50 60 70 80 90 100

1 370 348 325 299 270 236 196 136 MAX 300 277 251 222 190 151 101 MED 250 224 196 164 129 87 32

4 225 193 160 127 90 45 MIN 175 126 69

308

6

m³/h

150 103 43 1 330 308 284 258 229 195 158 111 53

MAX 300 272 244 214 182 146 104 3 255 228 199 168 131 86 29

MED 235 195 158 118 72 5 175 129 83 32

316-320

MIN

m³/h

156 103 35 1 590 549 506 462 417 369 321 266 208 143

MAX 530 485 437 390 340 290 239 185 128 MED 445 398 351 305 258 211 161 108

4 356 312 270 226 181 134 81 MIN 300 242 183 120 52

628-634

6

m³/h

286 208 137 72 10 1 916 866 812 759 700 641 580 517 454 389 322

MAX 730 694 653 606 553 499 442 384 327 270 210 3 657 607 560 514 469 424 378 331 283 229 169

MED 585 526 473 428 382 339 293 245 192 128 5 435 364 303 243 188 132 76

840-847

MIN

m³/h

390 302 232 168 107 51 1 1249 1203 1152 1093 1027 952 871 782 689 597 507

MAX 1130 1088 1042 987 923 852 768 682 595 510 429 MED 1050 987 923 862 800 737 673 607 539 469 396 MIN 860 803 749 694 640 588 533 478 422 364 302

5 636 562 506 457 412 368 324 279 232 180 115

1250-1260

6

m³/h

594 492 434 383 339 295 254 209 162 108 1 1425 1369 1311 1250 1183 1108 1030 944 851 749 641

MAX 1310 1244 1180 1116 1052 985 914 841 760 670 570 MED 1220 1165 1108 1044 980 908 832 751 666 575 479 MIN 1035 993 946 898 845 787 722 651 571 483 385

5 822 846 806 763 717 665 607 543 472 393 308

1575

6

m³/h

688 656 621 579 534 483 428 371 313 254 195 1 2050 1958 1858 1754 1646 1530 1410 1281 1145 1005 876

MAX 1850 1753 1651 1550 1446 1334 1222 1107 986 870 757 MED 1600 1522 1441 1360 1272 1182 1088 988 882 773 665

4 1400 1332 1258 1184 1105 1020 930 837 736 636 529 MIN 1250 1182 1109 1035 960 879 794 707 614 524 420

1885

6

m³/h

1050 984 915 845 771 698 618 535 460 378 243

_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________

3.3

Series Zefiro

3.2 Cooling Capacity for three standard speeds The following tables indicate the cooling capacity (total and sensible), the flow of water circulating in the coil and the consequent hydraulic pressure drop for the various available types of coils for the various ambient temperature and relative humidity conditions and water temperatures described. The air flows treated by the units are described in paragraph 3.1.

Room Temperature 27 °C (B.S.) – 47%

Water Temperature 7 °C (In) – 12 °C ( Out)

SIZE Unit MAX MED MIN Total cooling capacity KW 0,97 0.92 0.73 Sensible capacity KW 0,93 0.88 0.7 Water flow rate l/h 166,4 157.9 125.4

308

Pressure drop kPa 1,4 0.6 0.1 Total cooling capacity KW 1,43 1.2 0.89 Sensible capacity KW 1.18 1.03 0.73 Water flow rate l/h 246.1 205.5 152.3

316

Pressure drop kPa 4.7 2 0.8 Total cooling capacity KW 1.81 1.51 1.06 Sensible capacity KW 1.38 1.16 0.78 Water flow rate l/h 310.7 258.7 182.2

320

Pressure drop kPa 9.6 4.2 1.6 Total cooling capacity KW 2.49 2.2 1.63 Sensible capacity KW 4.08 1.83 1.37 Water flow rate l/h 426.5 377.9 280.1

628


634

Pressure drop kPa 4.4 2.7 1 Total cooling capacity KW 3.67 3.17 2.35 Sensible capacity KW 2.99 2.65 1.87 Water flow rate l/h 630.1 543.9 403.8

840

Pressure drop kPa 13.8 6.5 2.6 Total cooling capacity KW 4.34 3.71 2.68 Sensible capacity KW 3.32 2.84 1.98 Water flow rate l/h 744 635.7 459.4

847

Pressure drop kPa 11.3 5.1 1.9 Total cooling capacity KW 4.86 4.65 4.08 Sensible capacity KW 4.2 4.05 3062 Water flow rate l/h 834.7 797.8 699.2

1250


1260


1575


1885

Pressure drop kPa 21.2 13.9 7

_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________

3.4

Series Zefiro

3.3 Heating Capacity for three standard speeds The following tables indicate the heat output, the flow of water circulating in the coil and the consequent hydraulic pressure drop for the various available types of coils for the ambient temperature and water temperature conditions described. The air flows treated by the units are described in paragraph 3.1.

Main Exchanger Room Temperature 20°C Water Temperature 70 °C (In) - 60 °C (Out)

SIZE Unit MAX MED MIN

Heating capacity KW 2.62 2.3 1.79 Water flow rate l/h 230.2 202.3 157.4 308 Pressure drop kPa 2.4 1.5 0.6 Heating capacity KW 3.43 2.84 2.05 Water flow rate l/h 301.8 249.9 180.5 316 Pressure drop kPa 5.3 2.5 0.8 Heating capacity KW 3.95 3.24 2.28 Water flow rate l/h 346.7 284.9 200.4 320 Pressure drop kPa 9.3 4.2 1.6 Heating capacity KW 5.94 5.19 3.8 Water flow rate l/h 524.4 456 334 628 Pressure drop kPa 6.2 3.8 1.4 Heating capacity KW 6.81 5.9 4.24 Water flow rate l/h 597.9 518 372.3 634 Pressure drop kPa 4.9 2.9 1.1 Heating capacity KW 8.26 7 5.05 Water flow rate l/h 726 615.2 443.7 840 Pressure drop kPa 14.1 6.5 2.4 Heating capacity KW 9.46 7.94 5.62 Water flow rate l/h 830.8 696.9 493.4 847 Pressure drop kPa 11 5.2 1.8 Heating capacity KW 11.43 10.83 9.32 Water flow rate l/h 1003.8 951.8 819.1 1250 Pressure drop kPa 24.7 17.5 10.6 Heating capacity KW 13.37 12.63 10.76 Water flow rate l/h 1174.7 1109.3 945 1260 Pressure drop kPa 19.9 14.2 8.5 Heating capacity KW 15.75 14.9 13.04 Water flow rate l/h 1382.6 1307.9 1144.4 1575 Pressure drop kPa 10.4 7.4 4.7 Heating capacity KW 20.71 18.51 15.2 Water flow rate l/h 1818.2 1624.5 1333.6 1885 Pressure drop kPa 22.1 14.6 7

_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________

3.5

Series Zefiro

Main Exchanger Room Temperature 20°C Water Temperature 50 °C (In) – 43,3 °C (Out)


Heating capacity KW 1.52 1.34 1.08 Water flow rate l/h 198.4 174.3 135.6 308 Pressure drop kPa 1.9 1.2 0.5 Heating capacity KW 2.02 1.67 1.21 Water flow rate l/h 262.9 218 157.6 316 Pressure drop kPa 4.4 2 0.7 Heating capacity KW 2.33 1.92 1.35 Water flow rate l/h 304.4 250.3 176.4 320 Pressure drop kPa 7.9 3.5 1.3 Heating capacity KW 3.49 3.05 2.24 Water flow rate l/h 455.7 398.1 292 628 Pressure drop kPa 5.1 3.1 1.1 Heating capacity KW 4.02 3.48 2.51 Water flow rate l/h 523.4 453.7 326.4 634 Pressure drop kPa 4.1 2.5 0.9 Heating capacity KW 4.88 4.13 2.99 Water flow rate l/h 635.6 538.8 389.3 840 Pressure drop kPa 11.8 8.4 2 Heating capacity KW 5.6 4.7 3.33 Water flow rate l/h 728.9 611.9 433.8 847 Pressure drop kPa 9.3 4.4 1.5 Heating capacity KW 6.73 6.38 5.49 Water flow rate l/h 876.8 831.7 715.9 1250 Pressure drop kPa 20.6 14.5 8.7 Heating capacity KW 7.89 7.46 6.36 Water flow rate l/h 1028.7 971.8 828.5 1260 Pressure drop kPa 16.7 11.9 7.1 Heating capacity KW 9.28 8.79 7.7 Water flow rate l/h 1209 1144 1002.2 1575 Pressure drop kPa 8.7 6.2 3.9 Heating capacity KW 12.22 10.93 8.99 Water flow rate l/h 1591.6 1423 1169.8 1885 Pressure drop kPa 18.4 12.1 5.7

_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________

3.6

Series Zefiro

Auxiliary Exchanger Room Temperature 20°C Water Temperature 70 °C (In) - 60 °C (Out)


Heating Capacity KW 1.93 1.72 1.38 Water Flow rate l/h 169.7 151.1 121.3 Pressure drop kPa 5.1 3.9 3

308

Air flow m³/h 300 250 175 Heating Capacity KW 1.93 1.64 1.33 Water Flow rate l/h 169.7 155.6 117.3 Pressure drop kPa 5.1 3.8 2.8

316


320

Air flow m³/h 300 235 156 Heating Capacity KW 3.36 3 2.51 Water Flow rate l/h 295.1 263.6 220.3 Pressure drop kPa 19.1 14.6 10.8

628

Air flow m³/h 530 445 300 Heating Capacity KW 3.36 3 2.51 Water Flow rate l/h 295.1 263.6 220.3 Pressure drop kPa 19.1 14.6 10.8

634

Air flow m³/h 530 445 300 Heating Capacity KW 4.54 4 3.23 Water Flow rate l/h 399 375.9 284.2 Pressure drop kPa 6 4.4 3.5

840

Air flow m³/h 730 585 390 Heating Capacity KW 4.54 4 3.23 Water Flow rate l/h 399 375.9 284.2 Pressure drop kPa 6 4.4 3.5

847


1250


1260


1575


1885

Air flow m³/h 1850 1600 1250

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3.7

Series Zefiro

3.4 Cooling capacity of the direct expansion coils The following tables indicate the cooling capacity (total and sensitive) of the direct expansion units for different temperature and relative humidity conditions. The air flows treated by the units are described in paragraph 3.1.

Room Temperature 27 °C B.S. – 47% Cooling Gas : R407c Evaporation Temperature 6 °C

SIZE Unità MAX MED MIN Total cooling capacity W 1040 890 610 Sensible capacity W 950 780 550 Water flow rate l/h 182 153 106

308

Pressure drop kPa 4 2.8 1.9 Total cooling capacity W 1420 1190 830 Sensible capacity W 1150 940 670 Water flow rate l/h 246 205 145

316

Pressure drop kPa 6,4 4,6 2,5 Total cooling capacity W 1800 1490 1070 Sensible capacity W 1350 1100 790 Water flow rate l/h 310 257 184

320


628


634


840


847


1250


1260


1575


1885

Pressure drop kPa 15 13 10.5

_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________

3.8

Series Zefiro

3.5 Pressure drops in exchangers The following graphs indicate the hydraulic pressure drops of the coils. The figures were measured with an average inlet water temperature of 10 °C. To calculate the pressure drops through the coils with water circulating at a different temperature, multiply the pressure value calculated for a certain load by the relative correction factor shown in the following table. K corrective factor ∆P 1,1 1 0,94 0.88 0.87 0.85 0.82 0.79 0.775 0.75 0.74

Middle temp. Water °C 0 10 20 30 40 50 60 70 80 90 100

Main exchanger

Auxiliary Exchanger

_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________

3.9

Series Zefiro

3.6 Water content of the coils The following table shows the data relative to the water content of the coils mounted on the various sizes of fan coil unit.

Size 308 316 320 628 634 840 847 1250 1260 1575 1885

Main Exchanger Row content l 0,14 0.256 0.256 0.397 0.397 0.54 0.54 0.54 0.54 0.683 0,82

Main Exchanger Circuit content l 0,28 0,768 1,024 1,191 1,588 1,62 2,16 1,62 2,16 2,732 3,28

Additional row l 0,256 0.256 0.256 0.397 0.397 0.54 0.54 0.54 0.54 0.683 0,82

3.7 Electrical characteristics of motors

The following table indicates the power consumption figures of the standard motors mounted in the fan assemblies of the fan coil units powered at 230 V and 50 Hz. These figures were measured at maximum standard speed, with the fan coils fully operating, with delivery grilles and casing mounted and suction filter clean with zero static operating pressure.

Size 308 316 320 628 634 840 847 1250 1260 1575 1885

Power Input W 28 28 32 43 44 87 95 136 136 147 184

Nominal Current A 0,12 0,12 0,15 0,19 0,19 0,38 0,42 0,6 0,6 0,68 0,82

RPM n. 597 621 726 621 671 742 747 1049 1102 1170 1163

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3.10

Series Zefiro

3.8 NOISE EMISSION

3.8.1 Power sound level by octave band The power irradiated by a noise source is a measurement that is characteristic of the source itself and is not affected by external factors such as the place, distance and ear of the listener. The irradiated power is measured at various frequencies (octave bands). The total power in dB(A) is measured by applying special mathematical formulas to the measured data.

The following figures were the results of tests performed in a reverberation room certified according to the provisions of ISO 6926. The test instruments and procedures complied with the provisions of ISO 3741. The level of sound power of all the fan coils was determined for each operating speed as prescribed by ISO 3741, using the reference source comparison method. All the appliances were tested simulating real operating conditions, that is, with all their components fitted (delivery grilles, suction filter and casing). Power sound level Lw

Size [Hz] 125 250 500 1000 2000 4000 8000 TOT

[dB(A)] MAX 34,3 38,2 38,4 32,0 26,2 16,6 11,3 43,0

MED 32,6 35,0 34,5 27,8 20,8 11,5 11,4 39,0 308 MIN 28,5 28,4 24,4 9,1 7,1 7,2 10,2 29,0

MAX 34,5 38,5 37,6 32,6 25,5 17,3 12,2 43,0

MED 29,5 32,6 30,5 24,4 15,3 15,3 10,2 37,0 316 MIN 24,3 25,4 20,3 1,1 9,2 13,3 10,2 29,0

MAX 35,6 41,7 42,6 37,7 31,6 22,3 13,3 47,0

MED 31,4 36,5 34,6 29,5 20,3 9,3 9,2 41,0 320 MIN 28,5 29,4 24,5 16,3 6,1 5,2 14,3 31,0

MAX 36,5 41,6 42,6 35,5 30,5 19,4 13,2 46,0

MED 33,5 37,7 38,6 31,5 25,5 15,3 12,3 43,0 628 MIN 29,5 32,4 28,4 19,3 17,2 13,3 13,3 32,0

MAX 36,6 40,7 41,7 36,5 30,5 18,3 14,3 47,0

MED 33,6 38,5 38,6 33,5 26,4 14,2 12,3 44,0 634 MIN 29,5 32,5 29,4 20,4 12,2 6,2 12,2 35,0

MAX 39,6 45,7 47,6 40,6 39,7 27,5 15,3 51,0

MED 33,5 39,6 38,6 35,5 26,4 14,3 9,3 44,0 840 MIN 26,4 33,5 28,4 22,4 10,3 4,2 10,2 34,0

MAX 39,7 45,7 46,8 40,6 37,6 26,4 15,3 51,0

MED 34,5 39,6 38,5 35,5 25,5 15,3 11,3 45,0 847 MIN 28,5 35,5 28,4 22,4 16,3 11,3 11,2 34,0

MAX 48,7 53,8 53,8 50,7 49,7 43,6 33,5 61,0

MED 45,7 50,8 50,7 46,7 47,7 38,5 26,5 58,0 1250 MIN 42,6 47,7 48,7 42,7 44,7 32,5 20,4 55,0

MAX 48,8 54,7 54,7 50,7 49,7 42,6 31,5 61,0

MED 45,7 51,7 51,8 46,8 46,7 37,5 25,5 58,0 1260 MIN 42,6 48,7 49,8 43,6 43,6 32,6 20,3 54,0

MAX 51,8 57,8 57,9 54,7 53,7 47,7 38,6 64,0

MED 48,7 54,8 55,8 50,8 50,8 43,7 33,6 62,0 1575 MIN 44,7 51,7 51,8 47,6 47,7 38,6 27,5 59,0

MAX 52,8 57,9 57,8 54,9 52,8 49,7 39,6 63,0

MED 46,8 51,8 51,8 47,8 47,7 38,5 28,4 58,0 1885 MIN 43,7 48,7 49,8 43,7 44,7 32,5 22,4 53,0

_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________

3.11

Series Zefiro

3.8.2 Pressure Noise Level in a closed room Pressure noise level is the perception that a person has in the presence of a noise source. It depends on the volume of the room in which the sound propagates, the distance of the listener from the source of the sound and the acoustic reflections in the room (retransmission of energy). It is clear that covering the walls with sound-absorbing material (curtains, wallpaper, etc.) reduces the reflecting effect and therefore reduces sound pressure. The following pressure figures are calculated starting from the sound power measured, supposing that the fan coil unit is installed in a 100 m³ room, the reverberation time is 0.3 s, and the distance of the observer from the fan coil unit is equal to 1.5 m; a reflecting wall near the appliance is also considered. Although the results of the calculation are borne out by experience, they are not measurements and are therefore indicative. For special requirements, please consult a specialised technician.

Sound pressure level at 1,5 m from the unit, at min. std speed in a room of 100 m3, reverberating time 0,3 s, with one reflecting adjacent surface to the unit

Sound pressure Lp

Size [Hz] 125 250 500 1000 2000 4000 8000 TOT

[dB(A)] MAX 25,9 29,8 30,0 23,6 17,8 8,2 2,9 34,6

MED 24,2 26,6 26,1 19,4 12,4 3,1 3,0 30,6 308 MIN 20,1 20,0 16,0 0,7 -1,3 -1,2 1,8 20,6

MAX 26,1 30,1 29,2 24,2 17,1 8,9 3,8 34,6

MED 21,1 24,2 22,1 16,0 6,9 6,9 1,8 28,6 316 MIN 15,9 17,0 11,9 -7,3 0,8 4,9 1,8 20,6

MAX 27,2 33,3 34,2 29,3 23,2 13,9 4,9 38,6

MED 23,0 28,1 26,2 21,1 11,9 0,9 0,8 32,6 320 MIN 20,1 21,0 16,1 7,9 2,3 3,2 5,9 22,6

MAX 28,1 33,2 34,2 27,1 22,1 11,0 4,8 37,6

MED 25,1 29,3 30,2 23,1 17,1 6,9 3,9 34,6 628 MIN 21,1 24,0 20,0 10,9 8,8 4,9 4,9 23,6

MAX 28,2 32,3 33,3 28,1 22,1 9,9 5,9 38,6

MED 25,2 30,1 30,2 25,1 18,0 5,8 3,9 35,6 634 MIN 21,1 24,1 21,0 12,0 3,8 -2,2 3,8 26,6

MAX 31,2 37,3 39,2 32,2 31,3 19,1 6,9 42,6

MED 25,1 31,2 30,2 27,1 18,0 5,9 0,9 35,6 840 MIN 18,0 25,1 20,0 14,0 1,9 -4,2 1,8 25,6

MAX 31,3 37,3 38,4 32,2 29,2 18,0 6,9 42,6

MED 26,1 31,2 30,1 27,1 17,1 6,9 2,9 36,6 847 MIN 20,1 27,1 20,0 14,0 7,9 2,9 2,8 25,6

MAX 40,3 45,4 45,4 42,3 41,3 35,2 25,1 52,6

MED 37,3 42,4 42,3 38,3 39,3 30,1 18,1 49,6 1250 MIN 34,2 39,3 40,3 34,3 36,3 24,1 12,0 46,6

MAX 40,4 46,3 46,3 42,3 41,3 34,2 23,1 52,6

MED 37,3 43,3 43,4 38,4 38,3 29,1 17,1 49,6 1260 MIN 34,2 40,3 41,4 35,2 35,2 24,2 11,9 45,6

MAX 43,4 49,4 49,5 46,3 45,3 39,3 30,2 55,6

MED 40,3 46,4 47,4 42,4 42,4 35,3 25,2 53,6 1575 MIN 36,3 43,3 43,4 39,2 39,3 30,2 19,1 50,6

MAX 44,4 49,5 49,4 46,5 44,4 41,3 31,2 54,6

MED 38,4 43,4 43,4 39,4 39,3 30,1 20,0 49,6 1885 MIN 35,3 40,3 41,4 35,3 36,3 24,1 14,0 44,6

_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________

3.12

Series Zefiro

3.8.3 Variation in sound pressure depending on the volume of the room and the reverberation time.

The following graph allows the variation in sound pressure to be evaluated according to the size of a room and the sound-absorbency of its walls at an observer distance of 1.5 m. A low reverberation time equals a high level of sound-absorbency. The values in dB(A) obtained are added, as a correction, to those shown in the previous table

3.8.4 Variation in sound pressure according to distance

Sound pressure varies depending on the distance of the observer from the sound source; the larger the volume of the room the higher this variance is. Considering a 100 m³ room, the following graph allows the pressure values added as a correction to those shown in the table in paragraph 3.8.2 to be calculated.

_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________

3.13

Series Zefiro

3.8.5 Noise curves (NR)

The noise level of the appliance is often expressed using the NR index that considers the fact that a noise level may be more or less noticeable depending on the frequency at which it is emitted. Ventilation noise generally features frequencies of around 500÷2000 Hz. Noise, or equal disturbance, or isoauditive curves are calculated from the data in table 3.8.2; these can be used to find the values of NR in the reference conditions.

Size

308 316 320 628 634 840 847 1250 1260 1575 1885

MAX 27 27 29 29 29 33 33 42 42 45 47

MED 20 15 20 24 24 25 25 40 40 43 45 NR

MIN 10 9 9 12 14 14 14 37 37 40 37

As regards rooms with different characteristics, after recalculating sound pressure with the help of correction graphs, the new value of NR can be found by placing the figures obtained in the following graph.

4.1

Series Zefiro

4. ACCESSORIES AND VARIANTS Zefiro Series fan coil units have a wide range of accessories and variants which make them extremely versatile and adaptable to the most varied operating and installation requirements. All the currently available accessories and variants are described as follows. The company can also study the most suitable solutions for special requirements

4.1 Operating control devices

4.1.1 TM

TM is a minimum temperature thermostat which prevents fan starting before the water circulating in the exchanger has reached a minimum pre-set temperature. The room will only be ventilated when it is possible for the air to be heated sufficiently, thereby eliminating that unpleasant “cold sensation” while the coil feed valves are being opened. The bimetallic thermostat is mounted directly onto the fins of the coil with special clips. The electrical contacts are protected by a special cable featuring a sheath and a shaped terminal for housing the thermostat. Technical specifications Opening temperature: 24 ± 3 °C Closing temperature: 35 ± 3.5 °C Load of contacts: 5 A – 250 V AC1

Note: the accessory is not avaiable in case of Top1 HP and TOP1 0/1V HP control

4.2

Series Zefiro

4.1.2 ELMZ :

Device for driving various fan coils with single command. It consists on three relay, each one for an operation speed. Terminal boards and relays are assembled on printed circuit. Maximum absorbed power for each motor has to be inferior to 150 W. ELMZ must be bound together to one of the control devices later described on this manual. Technical characteristics ( for one relay)

Contacts Charact. Nominal Current: 16 A Max commutable voltage: 400 Vac Nominal Current Carrying Capacity in AC1: 4000 VA

Bobbin Charact.

Input Rated Voltage: 230V/50-60Hz Rated output: 1,2 VA

NOTES

− Guaranteed modularity until 100 pieces; − It can be only built-in type

• Terminal on inferior side for easier wiring • Double-face board with terminals to facilitate optimal side for wiring

4.1.3 Instructions to install the wall controls

For a correct installation of the control to the wall, it is advisable to use an electric box for surface wall-mounting (Max 100 X 55mm) to make the wiring connection quickly and to use the pins supplied in kit.

Sample of electric box for flush wall-mounting. Sample of a correct wiring connection

predisposition.

4.3

Series Zefiro

4.1.4 CSN:

CSN drives only one fan. ELMZ is the device for driving various ventilators. CSN manually controls the three running speeds of fan. First wiper permits to select running speed, the second one has three positions, OFF in central position and Summer/Winter mode set to give logic to minimum temperature thermostat TM, that can be optionally inserted.

Technical Characteristics Power supply: 230 ± 10% V – 50/60 Hz AC Maximum commutable current: 5 A Usable temperature limits 0-50 °C Usable humidity limits 10-90 % RH (in not saturated environment) Protection degree IP 40 Minimum temperature thermostat Mechanical N.A. Color RAL 9002 Dimensions CS-NN[mm] 140 x 75 x 34

NOTES − It can be built-in type or wall-mounted type − TM can be cut out by new jumper

For more information, refer to the technical sheet inside the packaging

CS-NN

CSN-BI

4.4

Series Zefiro

4.1.5 SATH: Electronic room thermostat , with manual speed selector and valve/s control

SATH is an electronic room thermostat, with manual speed selector. Electronics guarantees reliability and accuracy. The terminal board of electric terminals is preset to connect minimum temperature thermostat TM (optional) to a probe set on the unit suction in order to install the thermostat into the machine build-in. SATH drives only one fan. ELMZ device is required to drive various fans. Operation logics - thermostatic control only on ventilation of valveless units - Control of input valve of heat exchanger (fan always in function – suitable solution for systems with only

a feeding line of fan coils) - Control of two input valves of two heat exchanger with hot and cold water flow (fan always in function –

suitable solution for systems with two separated feeding lines of fan coils); - Control of input valve of cold exchanger and electric resistance EH substitutive of hot coil (fan always in

function)

NOTE In case of use of electric resistance EH is necessary to order separately a power relay (see company code EHR)

Device includes:

- Selector summer/OFF/Winter - Selector of three running speeds - Handle control for environmental temperature setup

Technical characteristics

Power supply: 230 ± 10% V – 50/60 Hz AC Maximum dissipated power: 1 VA Temperature setting range: 5-30 °C Temperature sensor: NTC 10K 25° 1% Differential operating: 0,5 °C Relay contact: 5A,250 V AC resistive Usable temperature limits. 0-50 °C Usable humidity limits: 10-90 % RH (in not satured envinronment) Protection degree (Level): IP 40 Minimum temperature thermostat: Mechanical N.A. Color: RAL 9002 Dimensions [mm] SATHN : 140 x 75 x 34

SATHN

SATH-BI

4.5

Series Zefiro

NOTE In case of use of electric resistance EH is necessary to order separately a power relay (see Company code EHR)

NOTES

- It can be built-in type or wall-mounted type - It drives simultaneously two valves (cold+hot) or cold valve and electrical resistance (cold+EH) - The electric resistance control is not give by direct command

Note: it is always advisable to use the valve. In case of no valve installed and in case of built-in control, please check if the room probe fixed in the suction of the unit, doesn’t be influenced by the hot or cool water present in the coil. If it happens, the probe must be placed in a better position


4.6

Series Zefiro

4.1.6 TOP1:

Electronic room thermostat with three speeds manual or automatic selector and summer/winter operation mode selector

A) valve on/off configuration – “TOP1”

TOP1 is an electronic room thermostat for fan coils with automatic or manual selector of three running speeds and summer/winter operation mode selector. It is a complete, reliable and accurate device. The set up temperature corresponds to maximum value of neutral zone. When room temperature is higher than set point, conditioning circuit starts running. Otherwise if environmental temperature is lower than minimum temperature value of neutral zone, heating circuit is activated. Using a deep switch, inside of the machine, is possible to change the amplitude of action neutral zone from 2°C (default value) to 5°C. Operating differential between two speeds is equivalent to 1°C; hysteresis on every step is equivalent to 0.5°C. Fan switches off when demanded temperature is attained, and at the same time input valve of exchanger turns off. Moreover, by opening of a contact, the device makes possible to enlarge amplitude of neutral zone until 8°C during Sleep Mode (economy). The terminal board of electric terminals is preset to install a minimum temperature thermostat TM (optional) TOP1 can be built-in type, when required, if previously an appropriate probe is set into unit suction. The control, off-the-shelf, can delay the moment in which heating mode fan switches off. So it avoids room air stratification. TOP1 can drive only one fan. ELMZ device is necessary in order to drive various fans. Operation logic:

- Control of input valve of exchanger ( suitable solution for systems with only one feeding line of fan coils) - Control of two input valves of two exchangers with hot and cold water flow (suitable solution for systems

with two separated feeding lines of fan coils) - Control of input valve of cold exchanger and electric resistance (EH) substitutive of hot coil. - Manual or automatic speed selector depending on difference between room temperature and set one

Device includes: - Selector ON/OFF - Four steps button for fan speed selection: minimum, medium, maximum, automatic speed - Handle control for room temperature setting

B) Modulating valves configuration - ”TOP 1 – 0/10V” It differs from TOP1 model for the possibility to drive modulating valves powered by 24 V AC.

TOP-1N

TOP1-BI

4.7

Series Zefiro

It will be necessary to use a transformer as company code TR24 code (alternate voltage output).

It’is also possible to realize, on request, the configuration for electric resistance. This TOP1 version makes possible to control additional electric resistance EH power on/off (remind:a relay is required; see EHR company code). When this solution is adopted, is not possible to drive modulating valves

C) model for heat pump - ”TOP1-HP” In 2 pipes system, it differs from TOP1 model for the change over temperature as follow: Cooling: temperature water to the inlet pipe low than 18 +/-3 degrees Heating: temperature water to the inlet pipe up than 28 +/-3 degrees. Using this control, it is not possible to use TM minimum temperature thermostat to be fixed on the heating coil

D) model for heat pump - TOP1 0/10V HP In 2 pipes system, it differs from TOP1 model for the change over temperature as follow: Cooling: temperature water to the inlet pipe low than 18 +/-3 degrees Heating: temperature water to the inlet pipe up than 28 +/-3 degrees. Using this control, it is not possible to use TM minimum temperature thermostat to be fixed on the heating coil

Technical characteristic version A ) C) ⇒ Power supply 230 ± 10% V – 50/60 Hz AC. Output valve ON/OFF 230 V 50/60Hz AC. version B) D) ⇒ Power supply 230 ± 10% V – 50/60 Hz AC. Output modulating valves 0-10 V DC.

Maximum dissipated power 1 VA Temperature setting range: 7-30 °C Adjustable Neutral zone 2 o 5 °C Temperature sensors: NTC 10k 25°C 1% (coo: Twater<18+/-3°, heat: Twater>35+/-3°) Usable temperature limits: 0-50 °C Usable humidity limits: 10-90 % RH (in not satured envinronment) Protection degree : IP 40 Speed and valves Differential operating : 0,5 °C Thermic Differential for speed selection: 1 °C Minimum temperature thermostat : Mechanical N.A. Input E/I for 2way system : NTC Probe Input Economy commutation: N.A. contact Input cable and probes Maximum length: 50 m sez. min. 0.5 mm2 Color: RAL 9002 Dimensions remote control[mm] : 140 x 75 x 34

NOTES - It can be built-in or wall-mounted type - It drives two probes and TM (not TOP1 HP version) - It automatically controls running speed - Default control is set on the air, but it can be set on the water - Appropriate deep switches have to be set to distinguish 2-ways system from 4-ways one

Note: it is always advisable to use the valve. In case of no valve installed and in case of built-in control, please check if the room probe fixed in the suction of the unit, doesn’t be influenced by the hot or cool water present in the coil. If it happens, the probe must be placed in a better position


4.8

Series Zefiro

TOP1 - Normal Working

WINTER MODE

SUMMER MODE

Operating differential

Neutral Zone2°C

Room Temp.

TOP1 - Economy Working (amplitude of neutral zone)

WINTER MODE

SUMMER MODE

NEUTRAL ZONE

Room temp.

Operating differential

4.9

Series Zefiro

4.1.7 MCS MCS (Multi Control System) includes an electronic board with microprocessor that can be connected indifferently to:

- an infrared receiver (IRP) for an infrared remote control (IRT), -an external regulator (ETN)). -a built- in regulator (FMH)

ETN and FMH controllers also include an infrared receiver for the infrared remote controller IRT. The electronic board controls also the fan starting in heating mode with a water temperature input fixed at 32°C set point through the thermostat installed onto the water coil Remote control allows to fix a timer for daily ON/OFF Possible versions are:

MCS01 Infrared control MIGA + IRT + IRP

MCS02 Infrared control MIGA + IRT + ETN with wall thermostat

MCS03 Infrared control MIGA + IRT + FMH with built-in thermostat

MCS04 Digital control MIGA + ETN with wall thermostat

MCS05 Digital control MIGA + FMH with built-in thermostat

Operation logics: - Control of input valve of exchanger (fan always in function – suitable solution for

systems with only one feeding line of fan coils) - Control of two input valves of two exchangers with hot and cold water flow (fan always

in function – suitable solution for systems with two separated feeding lines of fan coils) - Control of input valve of cold exchanger and electric resistance (EH) substitutive of hot

coil (fan always in function) - Manual or automatical speed selector depending on difference between room

temperature and set one.

Technical characteristics Power supply: 230 ± 10% V – 50/60 Hz AC Maximum dissipated power: 1 VA Temperature setting range: 10-30 °C Usable temperature limits. 0-50 °C Usable humidity limits: 10-90 % RH (in not satured envinronment) Differential operating of speeds and valves: 0,5 °C Differential Thermal operating for speed selection: 2° C

4.10

Series Zefiro

4.11

Series Zefiro

4.1.8 AS • Alarm Signal is an electronic control, which allows a remote monitoring of the correct working of air

conditioning units motor.. • It is a compact accessory, which can be easily added to any type of thermostat and/or regulation • Therefore it is appropriate for a quick identification of the fault unit, where the motor doesn’t work even if the

air conditioning unit is powered.. • The contact of the alarm signal can be normally open or normally closed • On the control two led (one red and one green) indicates for the working state For other information, please see chapter 5.

4.1.9 SUPPLY NOTES

- For every control, device remote kit version is available. - In that case electrical terminals must be wired by installer. Board is predisposed to fix terminals. Use of

different colours will facilitate wiring operations. - Probes are NTC10KOhm (Negative Temperature Coefficient) type. - Board is predisposed both for left and right machine type.

4.12

Series Zefiro

4.2 Heat Exchanger

In addition to main coil an auxiliary heat exchanger can be required only for heating mode. Please remember that the lower the temperature (< 8 °C) of the water to the conditioning coils is, the more efficient, as a dehumidifier, the exchanger is. High feed water coils temperatures in heating mode are advised if there are air inlet and forced air refill Moreover it is possible to have air cooling without dehumidification feeding coils by water at 10-15°C and room temperature between 20° and 24°C

4.2.1 Direct expansion exchangers BE

Dimensions connection pipes: 308÷847 1250÷1885 IN (liquid) mm 12 16 OUT (gas) mm 16 22

Zefiro basic model foresees the use of a single 2, 3 or 4 rows coil depending on size, which can be fed by hot or cold water dependent of heating or cooling mode The company offers, if required, direct expansion exchangers fed by R407c, R134a cooling gas

Zefiro fan coil units can use a direct expansion coil fed with R134a or R407 C. The connections to the coolant supply line comprise stubs of copper piping of a diameter which varies according to the size of the coil (see table below) Also in this case, a 1-row battery fed by hot water with a heating or post-heating function can be added. A fan coil unit with the direct expansion coils and the additional 1-row coil can condition a room instead of the pre-existing radiator, using the same centralised heating system and a new condensing unit for conditioning.

4.13

Series Zefiro

4.3 Electric Heater EH

When the supply of the power relay (EHR) is not requested, the input cables of the heating element are connected to the terminal board of the basic panel QB; the fitter is responsible for connecting them to a suitable power relay and to the fan coil unit control systems. A manually resettable safety thermostat is fitted on each element of the electrical heater. The heat output of this heater is suitable for heating rooms in spring and autumn, for integrating heat pumps or for post-heating of fan coil units working in the conditioning mode. The technical characteristics of the heating elements depending on the size of the fan coil unit are indicated in following table

Size Power STD [ W]

Safety thermostats operating temperatures

308/316/320 1000 200 °C 628/634 1250 200 °C

840/847/1250/1260 2000 230 °C 1575/1885 3000 230 °C

The electric heater EH is an alternative to the additional 1-row coil The electric heater comprises a core made from suitably conductive material inserted inside an aluminium structure with folded fins in order to maximise heat exchange efficiency with the forced air. This type of electric heater, unlike the incandescent wire type, does not have problems of electrical dispersion and there is therefore no danger of electric shocks deriving from accidental contact; it is also tougher and more effective. A power relay (EHR) must be used to connect the electric heater to the control systems of the fan coil unit. The company declines responsibility for malfunctions caused by the absence of this device.

4.14

Series Zefiro

4.4 Regulation Valves

4.4.1 Valve body The valves are used to adjust the flow of hot and chilled air; there are two types of valve: 2 way/2 gate and 3 way/4 gate In order to keep the overall pressure drop of the system as constant as possible 3 way/4 gate valves should be used. 2 way/2 gate valves The valves are all normally closed; when the actuator is excited, the position of the valve stem changes to allow it to open. The rubber plug offers a perfect seal. Technical specifications Connectors: GM ½” Zefiro (308 ÷ 847) GM ¾” Zefiro (1250 ÷ 1885) Conical beat Adjustment: linear Operating pressure: 1000 Pa max (10 bar) Permitted fluids: water (2÷95 °C) water with glycol max. 50% Kvs: 1.6 (sizes 308-847 and all B1 coils) 2.5 (sizes 1250÷1885) 3 way/4 gate valves The valves are all normally closed and the water by-passes the fan coil unit, while when the actuator is excited the position of the valve stem changes to allow it to open. The plug offers all the models used a perfect seal both on the direct and the corner way. The use of valves with different loss coefficients depending on the size of the fan coil unit, allows pressure drops of less than 3 m water column to be obtained. The valves can be ON/OFF or modulating. Technical specifications Connectors: GM ½” Zefiro (308÷847) GM ¾” Zefiro (1250-1885) Conical beat Adjustment: linear Operating pressure: 1000 Pa max (10 bar) Permitted fluids: water (2÷95 °C) water with glycol max. 50% Kvs: 1.6 (size 308÷847 and all B1 coils) 2.5 (size 1250÷1885)

4.15

Series Zefiro

4.4.2 Actuators There are 3 types of actuators: one of the ON/OFF valve and the other two for the modulating valve (only available for the 3 way/4 gate valve). The ON/OFF actuator opens the valve by heating a thermostatic element which moves a small piston which raises or lowers (depending on the type of valve mounted) the valve system. The modulating valve stem, instead, is moved by a train of gears. Technical features

ON OFF actuator Power input: 230 ± 10% V – 50/60 Hz AC Consumption: 3.0 VA operating <0.70 A starting Stroke time: opening 3,5 mins closing 4 mins Thrust on plug: 100N Operating temperature: 0…50 °C Protected to: IP40

MODULATING actuator (linear mode) Power input: 24 ± 10% V – 50/60 Hz AC Consumption: 3.5 VA Control: 0 ...10 V Stroke time: opening 4,5 mins closing 4,5 mins Operating temperature: 0…50 °C Protected to: IP40

4.4.3 Assembly kit and lockshields

Lockshields can be installed down-line from the adjustment valves (with prior agreement and at an extra charge); these comprise zero pressure drop check valves which isolate the fan coil unit from the rest of the system

The valves are fixed to the fan coil unit using an assembly kit comprising copper pipes and brass unions. The unions are sealed with dedicated seals resistant to wear and atmospheric and chemical agents. The kit has been designed to be used on all the fan coil units (horizontal, vertical, built-in or with casing). The condensate which forms on the metal parts of the kit fed with cold water for conditioning is collected by the auxiliary collector and drained into the main condensate collector of the fan coil unit.

4.16

Series Zefiro

The assembly of the valves on the fan coil unit comprises:

- mechanical connection of the valves to the exchangers using the kit;

- testing (pressurising the system to 8 bars and checking it is tight);

- fixing actuators to the valve and connecting them to the electrical panel.

Notes: The lock shields are supplied separately on explicit request and are not mounted. The valve kit may also be ordered separately, dismounted; please remember to specify whether the valves are right or left when ordering (referring to an observer standing in front of the fan coil unit). The codes for ordering just the kit supplied dismounted are: - V23K 1 ON/OFF valve + connectors; - V43K 2 ON/OFF valves + connectors

4.4.4 Table of available accessory combinations The following table shows the codes to use when ordering the various layouts of valves mounted on the fan coil unit. The table also shows the description of the various layouts of the valve bodies and of the available electronic and electromechanical control systems. Please refer to paragraph 4.1 for the various kinds of operating logic.

Code Configuration description V22 (*) one 2 way/2 gate ON/OFF valve, for 2-pipe system (1 coil feed line)

V42 (*) two 2 way/2 gate ON/OFF valves, for 4-pipe system (2 coil feed lines)

V23 (*) one 3 way/4 gate ON/OFF valve + kit, for 2-pipe system (1 coil feed line)

V43 (*) two 3 way/4 gate ON/OFF valves + kit, for 4-pipe system (2 coil feed lines)

V23+DET2 one 3 way/4 gate ON/OFF valve + kit + 2 lock shields, for 2-pipe system (1 coil feed line)

V43+DET4 two 3 way/4 gate ON/OFF valves + kit + 4 lock shields, for 4-pipe system (2 coil feed lines)

V23M one 3way/4gate MODULATING valve + kit, for 2 pipes system (1 coil feed line) V43M two 3way/4gate MODULATING valve + kit, for 4 pipes system (2 coil feed lines) V23M+DET2 one 3 way/4 gate MODULATING valve + kit + 2 lock shields, for 2-pipe system (1 coil feed line)

V43M+DET2 Two 3 way/4 gate MODULATING valves + kit + 2 lock shields, for 4-pipe system (2 coil feed lines)

(*) Versions available with separated kit (V22 K -V42 K - V23 K - V43 K) DET 2 / DET 4 Lock shields for 2 and 4 pipes

Control device Layouts

V22 V42 V23 V43 V23+ DET2

V43+ DET4 V2M V4M V2M+

DET2 V4M+ DET4

CSN - - - - - - - - - -

SATH • • • • • • - - - -

TOP1 • • • • • • - - - - TOP 1 – 0/10 V - - - - - - •(**) •(**) •(**) •(**) MCS • • • • • • •(**) •(**) •(**) •(**)

• supplied - not supplied ** Available if required with extra charge.

4.17

Series Zefiro

4.5 System accessories

The constant attention to the problems connected to fan coil units installation induced the company to offer a wide range of plenums, unions and accessories of various shapes and functionalities. Their use makes Zefiro series fan coils extremely versatile and adaptable to the most varied requirements. The accessories currently available are described below; the company technical department is able to design and construct other non-standard elements. All the accessories are supplied separately at an extra charge.

4.5.1 CZ - Pair of feet

This pair of feet comprises 4 parts: two brackets for the fan coil unit support, and two asymmetrical parts which follow the profile of the casing. The pair of feet can be mounted on all models with casing in order to conceal the electric cable, system piping and condensate drain when these come out of the floor or the wall. The free area between the feet allows the fan assembly to be accessed and inspected after first removing the filter. Colour: STD RAL 9002 Heigt from ground: 100 mm

4.5.2 CZF - Plinth with openable hatch

The plinth comprises two symmetrical side feet to which a hatch is hinged. It features ventilation grilles and must be opened to remove the filter. The hatch is kept in place by a push push system of opening. Colour: STD RAL 9010 Heigt by ground :100 mm

Openable hatch

4.18

Series Zefiro

4.5.3 PAE/V, PAE/H - External air shutters for vertical and horizontal models The external air shutters allow the air flowing into the room to be adjusted. The percentage of fresh air can vary from 0 to 100% of the delivery air. Generally speaking, in public areas, the quantity of fresh air should be equal to 30 m3/h per person. The shutter is normally adjusted manually but it may also be powered. This second solution should be provided by the fitter; the company has dedicated servomotors (PAEM) that can be supplied separately for an extra charge.

The shutter must be mounted together with the pair of feet (CZ), or alternatively with the plinth (CZF). As it can be seen in the photos, the shape of the shutter changes between vertical or horizontal version of fan coils: narrow for the horizontal model (PAE/H), wide for the vertical one (PAE/V). Colore: STD RAL 9010

PAE/V PAE/H

4.19

Series Zefiro

4.5.4 PAE/HF -External air inlet connection The auxiliary air intake can be installed on all the Zefiro fan coil units, with or without casing, with front suction. It comprises an infill panel with a circular flanged air inlet for connections to a hole in the wall or to a suction pipe. This auxiliary inlet can be used to add fresh air to a room or simply to increase the suction capacity of the fan coil unit. The centre-to-centre distances and the sizes of this component, relative to each size of fan coil unit are indicated in the following table. The flange is 50mm high.

308-316-320

628-634 840-1260 1575 1885

A 260 390 520 650 780 B 100 100 100 100 100 C 100 100 100 100 100

4.5.5 PAEM - Motor for external air shutter The motor for the external air shutter opens or closes the external air inlet and can be installed both on vertical and horizontal models. The flow of fresh air (that is, the various opening stages of the external air inlet) is always manually adjusted and is performed by pre-calibrating the angular stroke of the servomotor. The device therefore only allows the external air inlet to be opened or closed for a previously set rate of flow.

Technical features

Torque: 4 Nm Travel time: 20…35 s Power input: 230 V – 50/60 Hz AC Consumption: 4,8 W (during stroke) 1,2 W (after stroke) Angular stroke: 0-90° Protected to: IP 42

4.20

Series Zefiro

4.5.6 PPV – Rear panels for vertical models The panels, painted in the same colour as the casing, cover the rear of the fan coil units (VA + CZ and VB models) when they are installed against glass walls or when the rear can be seen.

Colour: STD RAL 9010

4.5.7 PPHA/B- Rear panels for horizontal models

These panels, painted in the same colour as the casing, cover the rear of the horizontal fan coil units when they are installed with the rear in sight. The PPHA is mounted on models HA. The PPHB, instead, is mounted on models HB.

PPHA PPHB

Colour: STD RAL 9010

4.21

Series Zefiro

Delivery plenum This type of accessory can only be mounted on built-in models

4.5.8 PMZE - Delivery plenum with circular connectors The delivery plenum allows the fan coil unit to be connected to circular ducted air distribution systems. The accessory is made from galvanised sheet metal, on request and for an extra charge, it is lagged (order code COIB) to prevent humid external air from condensing on the walls when applied to fan coil units working in the conditioning mode. The plenums may have from one to three connector flanges depending on the size of the fan coil unit and they can be fixed to the wall with pressure screws and to the delivery intake by means of self-threading screws (the latter are supplied in kit form). The following table and drawing indicate the different sizes. The plenum will be supplied withou any insulation. In case you need the insulation, indicated it in the order (code “coib.”).

308 – 316 -320 628 - 634 840 - 1260 1575 1885

[mm] Φ flange 160

Flange heigth 60 Nr. of flanges 1 2 3 4 5

A 540 800 1060 1320 1580 B 260 227 195 200 180 C -- 325 325 300 300

4.22

Series Zefiro

4.5.9 PM90ZE - Delivery elbow connector This elbow deviates the air flow by 90°, pushing the delivery of the fan coil unit to the front. It is made from galvanised sheet metal and, on request and for an extra charge, it is lagged to prevent humidity from condensing on the walls when the fan coil unit is working in the conditioning mode. The plenum is fixed to the fan coil unit inlet with self-threading screws supplied in kit form.

The following table and drawing indicate the different sizes. The plenum will be supplied without any insulation. In case you need the insulation, indicated it in the order (code “coib.”).

4.5.10 RTZE - Delivery telescopic connector This connector connects the fan coil unit delivery with a surface located at a distance varying from 101 mm to 191 mm. Its walls, on request and for an extra charge, can be lagged to prevent humid air from condensing when it is connected to a fan coil unit working in the conditioning mode. It is made from galvanised sheet metal and fixed to the outlet of the appliance with the relative holes and self-threading screws supplied in kit form. The following table and drawing indicate the different sizes. The plenum will be supplied without any insulation. In case you need the insulation, indicated it in the order (code “coib.”).

308-316-320 628-634 840-1260 1575 1885

[mm] A 451 711 971 1231 1491

308-316-320 628 - 634 840 - 1260 1575 1885

[mm] A 525 785 1045 1305 1565 B 520 780 1040 1300 1560

4.23

Series Zefiro

4.5.11 GFM Fixed delivery grille This grille, made from anodised aluminium, is used to finish the outside of air delivery outlets incorporated in pieces of furniture or panels covering built-in fan coil units. The fins can be adjusted. The following table and drawing indicate the different sizes that can be used to make the housings

4.5.12 GF2 - Dual adjustment delivery grille This grille, made from anodised aluminium, is used to finish the outside of air delivery outlets incorporated in pieces of furniture or panels covering built-in fan coil units. The fins can be adjusted horizontally and vertically, thereby directing the flow of air in the room. The following table and drawing indicate the different sizes that can be used to make the housings.

308-316-320 628 - 634 840 - 1260 1575 1885 [mm]

A 558 818 1078 1338 1598 B 516 776 1036 1296 1556

308-316-320 628 - 634 840 - 1260 1575 1885 [mm]

A 558 818 1078 1338 1598 B 516 776 1036 1296 1556

4.24

Series Zefiro

Suction intake plenum This type of accessory can only be mounted on built-in models

4.5.13 PACZE - Suction intake plenum The plenum allows to connect the fan coil unit to a dual suction intake system simply breaking appropriate pre-blanks. It is possible to connect the fan coil to a suction canal by breaking only the pre-blank of rear side. Otherwise by breaking the pre-blank of plenum frontal side it is possible to deviate air flow of 90°. Breaking both pre-blanks it is possible to realize a mixture between renewal air and blow-by air. The device is made out of galvanised sheet metal and is fixed to the sides of the fan coil unit. The filter placed in a special housing can also be removed with the plenum fixed. The following table and drawing indicate the different sizes.

4.25

Series Zefiro

4.5.14 PAZE – Suction intake plenum with spigots This plenum allows the fan coil unit to be connected to circular ducted air distribution systems; it is made from galvanised sheet metal. The plenums can have from one to three connection flanges, depending on the size of the fan coil unit, to which they are fixed with self-threading screws through the holes in the side of the appliance. As visible in the photo, the filter can also be removed with the accessory mounted, by the housing on the plenum itself. The following table and drawing indicate the different sizes.

4.5.15 GFA- Fixed suction intake grille The suction fixed grille, made from anodised aluminium, is used to finish the outside of air inlets incorporated in pieces of furniture or panels covering built-in fan coil units. The following table and drawing indicate the different sizes that can be used to make the housings.

308-316-320 628 - 634 840 - 1260 1575 1885

[mm] Φ flange 160

flange heigth 60 Nr of flanges 1 2 3 4 5

A 262 230 197 202 180 B -- 325 325 300 300 C 525 785 1045 1305 1565

308-316-320 628 - 634 840 - 1260 1575 1885 [mm]

A 557 817 1077 1337 1597 B 515 775 1035 1295 1555

4.26

Series Zefiro

4.6 Other accessories

4.6.1 PSCZE - Condensate drain pump This accessory drains the condensate from the fan coil unit in special system conditions. The condensate drain pump has an alarm and a fan coil unit stop device when the flow of water to drain is higher than allowed. Note: in case of horizontal unit HA-HC-HL with B1 auxiliary coil, it will be not possible to installed the PSCZE/BI-O

PSCZE/BI-V PSCZE/BI-O Technical specifications Maximum rate of flow. 8 l/h Maximum delivery: 8 m Maximum suction: 2 m Voltage: 230 V/50 Hz – 110 V 50/60 Hz Max. Power: 10W

Technical specifications Maximum rate of flow. 10 l/h Maximum delivery: 6 m Maximum suction: 2 m Voltage: 230 V- 50/60 Hz Max. Power: 18 W

4.6.2 FAG3 - Special filter The special filter has a higher filtering efficiency than the standard type (G3 instead of G1). The sizes are the same as the filter supplied standard on the fan coil units (see par 1.2.3). It can be removed and cleaned up in the same way of the standard filter. It is light-blue on one side and white on the other. In order to use it correctly, the filter must be mounted with the light-blue surface pointing towards the outside of the fan coil unit. The pressure drops induced by this type of filter differ slightly from standard.

4.27

Series Zefiro

4.7 Guide to accessories and spare parts The following tables summarise the accessories presented in the previous paragraphs and relate them to the models of fan coil units on which they can be installed in seriess or as an accessory. The various models of valve that can be mounted on all the types of fan coil unit are not listed; these are dealt with in paragraph 4.4. The available spare parts are also indicated.

Accessory code Description VA VB HA HB VC

VD VE VF

HC HD

Accessories for operating control CSN 3 speeds electronic selector with S/W switch ○(1) ○(1) ○(1) ○(1) ○(1) ○(1) SATH Electronic thermostat with 3 speeds sel. ,S/W selector ○(1) ○(1) ○(1) ○(1) ○(1) ○(1) TOP1 Electronic regulator with S/W selector ○(1) ○(1) ○(1) ○(1) ○(1) ○(1) MCS01 Infrared control MIGA + IRT + IRP ○ ○ ○ ○ ○ ○

MCS02 Infrared control MIGA + IRT + ETN with wall thermostat ○ ○ ○ ○ ○ ○

MCS03 Infrared control MIGA + IRT + FMH with flush mounting thermostat ○ ○ ○ ○ ○ ○

MCS04 Infrared control MIGA + ETN with wall thermostat ○ ○ ○ ○ ○ ○

MCS05 Digital control MIGA + FMH with flush mounting thermostat ○ ○ ○ ○ ○ ○

TM (8) Low water temp. Thermostat for heat pump ○ ○ ○ ○ ○ ○ ELMZ “master/slave” Elevator module ○ ○ ○ ○ ○ ○ TR24 Transformer 230/24V for modulating valve models ○ ○ ○ ○ ○ ○ AS Running/allarm detector ○ ○ ○ ○ ○ ○

System accessories CZ Feet set ○ - ○ - - - CZF Socle with suction panel (full socle) ○ - ○ - - - PAE/V Ext. Air damper for vertical models ○ - - - ○(2) - PAE/H Ext. Air damper for horizontal models - - ○ - - ○(3) PAE/HF External air inlet connection - - - - ○(7) ○(7) PAEM Motorization for shutter ○ - ○ - ○(2) ○(3) PPV Rear panel for vertical models VA+CZ - VB ○ ○ - - - - PPHB Rear panel for horizontal models - - - ○ - - PPHA Rear panel for horizontal models - - ○ - - - PMZE Outlet plenum with spigots - - - - ○(6) ○ PM 90ZE 90° outlet plenum - - - - ○(6) ○ RTZE Telescopic connector - - - - ○(6) ○ GFA Fixed grilles for suction - - - - ○ ○ GFM Fixed grilles for outlet - - - - ○ ○ GF2 Double regulation alluminium fixed grilles for outlet - - - - ○ ○ PACZE Multi-suction plenum - - - - ○(4) ○(4) PAZE suction plenum with spigots - - - - ○(4) ○(4) COIB Plenum insulation - - - - ○ ○

○ optional – unavailable

(1)These types of control devices can be installed both on the wall and on the machine; in this case add BI to the accessory code when ordering; (2)Can be installed only on VC, VE models; (3)Can be installed only on HC; (4)These types of plenum cannot be installed on models with inlet at the front; (5)The required quantity should be indicated when ordering; (6) only on VC and VD models; (7) only on frontal inlet models.

(8) not available with TOP1 HP and TOP1 0/10V HP

4.28

Series Zefiro

Accessory code Description VA

VL VB HL HA HB

VC VD VE

VF

HC HD

Other accessories EH Electr. heater (only in 2 (*) and 3 rows without B1) ○ ○ ○ ○ ○ ○ EHR Relais for electrical resistance ○ ○ ○ ○ ○ ○ PSCZE Condensation drainage pump ○ ○ ○ ○ ○ ○ PSCZE/BI-V Condensation drainage pump factory installed vertical ○ ○ - - ○ - PSCZE/BI-O Condensation drainage pump factory installed horizontal - - ○ ○ - ○ FAG3 Special filter ○ ○ ○ ○ ○ ○ FLXZ22 Flexible pipes for 2 pipes L=20cm ½” ○ ○ ○ ○ ○ ○ FLXZ24 Flexible pipes for 2 pipes L=40cm ½” ○ ○ ○ ○ ○ ○ FLXZ42 Flexible pipes for 4 pipes L=20cm ½” ○ ○ ○ ○ ○ ○ FLXZ44 Flexible pipes for 4 pipes L=40cm ½” ○ ○ ○ ○ ○ ○

Spare parts B1Z-BPZ 1 to 4 rows coil ○ ○ ○ ○ ○ ○ AT Autotransformator ○ ○ ○ ○ ○ ○ GRV Fan deck ○ ○ ○ ○ ○ ○ CAB Cabinet without plastic grilles ○ ○ ○ ○ ○ ○ FDX – FSX Right, left plastic side ○ ○ ○ ○ - - ADPZ Auxiliary drain pan ○ ○ ○ ○ ○ ○ FA Air filter ○ ○ ○ ○ ○ ○ GRZ Delivery plastic grilles ○(5) ○(5) ○(5) ○(5) - - SPZ Door ○ ○ ○ ○ - -

Modulating Valves V2M 3 way /4 gate modulating Valve ○ ○ ○ ○ ○ ○ V2MK 3 way /4 gate modulating Valve, kit not mounted ○ ○ ○ ○ ○ ○ V4M 3 way /4 gate modulating Valve 4 pipes ○ ○ ○ ○ ○ ○ V4MK 3 way /4 gate modulating Valve 4 pipes,kit not mounted ○ ○ ○ ○ ○ ○

On off Valves V22 2 way On/Off valve set for 2 pipes systems ○ ○ ○ ○ ○ ○ V42 2 way On/Off valve set for 4 pipes systems ○ ○ ○ ○ ○ ○ V23 3 way / 4gate on/off valve 2 pipes ○ ○ ○ ○ ○ ○ V43 3 way / 4gate on/off valve 4 pipes ○ ○ ○ ○ ○ ○ V22K 2 way on/off valve for 2 pipes systems,kit not mounted ○ ○ ○ ○ ○ ○ V42K 2 way on/off valve for 4 pipes systems,kit not mounted ○ ○ ○ ○ ○ ○ V23K 3 way / 4gate on/off valve 2 pipes systems,kit not mounted ○ ○ ○ ○ ○ ○ V43K 3 way / 4gate on/off valve 4 pipes systems,kit not mounted ○ ○ ○ ○ ○ ○ DET2 Holder for 2 pipes ○ ○ ○ ○ ○ ○ DET4 Holder for 4 pipes ○ ○ ○ ○ ○ ○

○ optional – unavailable (1) These types of control devices can be installed both on the wall and on the machine; in this case add BI to

the accessory code when ordering; (2) Can be installed only on VC and VE models; (3) Can be installed only on HC model; (4) These types of plenum cannot be installed on models with frontal inlet (5) The required quantity should be indicated when ordering.

5.1

Serie Zefiro

5. ELECTRICAL DIAGRAMS The company’s constant attention to the most varied customer requirements leads it to regularly adopt new and more effective control systems for its fancoil units. This chapter describes, solely from the functional point of view, the electric diagrams that were available at the date this technical manual was published. In following pages are present electrical outlines used by company

Key

CSN Thermostat for fan speeds control. Summer/winter set switch gives operating logic to minimum temperature thermostat

SATH Electronic Thermostat, with manual speed selector and valves control.

TOP1/ TOP1HP

Thermostat electronic with automatic or manual three speeds running and summer/winter mode control

TOP1 – 0/10 V

Thermostat electronic with automatic or manual three speeds running and summer/winter mode control for modulating valves

TM Minimum temperature thermostat

EH Electrical heater

EHR Relais interfaccia di potenza per riscaldatore elettrico

IR Electrical heater switch (CSN)

Vxx ON/OFF ElectroValve

VxM(K) Modulating valve (avaiable also in Kit)

PSCZ Condensate drain pump

AS Consente un monitoraggio del corretto funzionamento del motore di unità.

24V 24 Volt supply

ELMZ Control device for driving various fancoils

TR24 230 V (In) – 24 V (Out) tension transformer

Note: –BI indicates accessory mounted on the machine

5.2

Serie Zefiro

5.1 Fancoil units motors wiring The same electrical diagrams can be used for all the sizes of Zefiro Serie fancoil units; the only difference is in the wiring of the three motor running speeds. On Zefiro sizes 308-1260 the motor is single-phase and has a single speed of rotation, the six available operating speeds are derived from a voltage autotransformer connected to the motor; the three standard speeds are selected from the six available ones. The autotransformer has a terminal board with eight clips to which the motor power input and the wires for running speeds control are connected. Instead the motors for Zefiro sizes 1575-1885 are still single-phase, six speeds of rotation but directly wired to the internal windings of the motor itself. In this case, too, three of the six available speeds are selected.

The following table contains the letters identifying the various connections to the electric motors and the colours of the wires for the various operating speeds. There are always five wires leaving the autotransformer: the common, the earth and the three speeds, the latter can be identified by different letters depending on the autotransformer terminal to which they are connected (e.g.: the red wire could be indicated on the electrical diagram with the letter d or p in the case the fan coil unit works at the minimum standard speed or at the lowest speed of the autotransformer).

MOTOR A MOTOR B

Faston on autotransformer. Color of connection wires Color of connection wires M

M

a L blue (common) white (common)

i 1 --- Black

b 2 Black (standard max speed) Grey (standard max speed)

c 3 Orange Blue

m 4 --- Orange

d 5 Red Brown

p 6 --- Red

e Green/Yellow (Earth)

f Internal unit connecting limit

g Power cable

h Shutting bridge

Summer =cooling mode

Winter = Heating mode

Motor A with autotransformer for Zefiro 308/1260 Motor B for Zefiro 1575-1885

5.3

Serie Zefiro

5.2 Electrical diagrams for the operative control of the fan coil unit with commands on the machine supplied by the company

230V50 Hz {

NL1

V1NL TMTM C

V2V1 V3

OFF

CSN

V3V2

MEba dc

W S

CSN

H4CO V2V1 V3 TM TM L N

OFF ON

E1CE E2 E3 H1

H1 H2 H3 H4 = HEATING

C1H2 C2 C4C3 H3

V1 V2 V3

CO=FASE ALIMENTAZIONE MOTOREV1=COMANDO VELOCITA' MIN

CE=USCITA NEUTRO COMUNE MOTOREE1=USCITA (FASE) VELOCITA' MIN

ELMZ

CO= MOTOR INPUT PHASE V1= MIN SPEED COMAND V2= MED SPEED COMAND V3= MAX SPEED COMMON TM= COMMON SPEED INPUT N = MOTOR INPUT COMMON

CE= COMMON NEUTRAL OUTPUT E1= MIN SPEED (PHASE) OUTPUT E2= MED SPEED (PHASE) OUTPUT E3= MAX SPEED (PHASE) OUTPUT H1,H2,H3,H4 =HEATING C1,C2,C3,C4 =COOLING

5.4

Serie Zefiro

V1 V3V2L N N

V1 V2 V3

OFFINV EST

SATH

N E I E/ITMTM

INO

UT

JUM

P. I

N IN

TER

NA

L P

RO

BE

L

MIN

MED

MA

XN

CO

MM

ON

INLE

T P

RO

BE

JUM

P. O

UT

EXT

ERN

AL P

RO

BE

MEa b c d

NO VALVE CIRCUIT

E

L NN V3V1 V2 N TME/IIE TM

Vel. 1

Vel. 3

Vel. 2

STby

INV

EST

V1NL N V3V2 EN

I

°t

Vel. 1

Vel. 3

Vel. 2

TME/II TM

STby EINV

EST

I

°t

1 VALVE CIRCUIT

2 VALVES CIRCUIT

E

L NN V3V1 V2 N TME/IIE TM

Vel. 1

Vel. 3

Vel. 2

STby

INV

EST

I

°t

SATH

5.5

Serie Zefiro

V1 V3V2L N N

OFF

TOP1

VHVC SEECTM M

INO

UT

ON SPEED MINSPEED MEDSPEED MAXE/I

Function

2

DIP switch

1

DELAY VENT

E/I

ACTIVE

WATER

On

FALSE

AIR

Off

3 OPTIONALS NONENONE

4 NEUTR. ZONE 2°C5°C

5 AIR SENSOR INLET+OFFSETOUTLET+AIR

6 2/4 PIPE 4 PIPE2 PIPE ONLY VH

AIR

OU

T PR

OBE

CO

MM

ON

L N

MIN

MAX

MED

JUM

P. O

UT

EX

TER

NAL

PR

OBE

JUM

P. I

N IN

TER

NAL

PR

OBE

ON1

2

3

4

5

6

NTC10K

TER

MO

STA

TO D

I MIN

IMA

FUN

ZIO

NE

EC

ON

OM

Y

TOP1, TOP1-HP

speed MINspeed MED

speed MAXE/I

air out probe

5 - 30 °C

0-1-2-3push botton

TM

SW2

OUTLET WATER PROBET < 15°C = COOLT > 35°C = HEAT

EV COOLEV HEAT

FAN MOTOR 230V ac

TA 230/24

< JU

MP

ER F

OR

<

SELE

CT

PR

OB

E IN

LET

DIP SWITCH FUNCTION OFFON

1

4

3

2

5

6

NEUTRAL ZONE

2/4 PIPE

AIR SENSOR

OPTIONAL

DELAY VENT

E / I

5° C

2 PIPE ONLY VH

OUTLET + AIR

NONE

ACTIVE

WATER

2° C

4 PIPE VE + VC

INLET + OFFSET

NONE

FALSE

AIREARTH

50/60 Hz

230 V

0-10V

21

on

inou

t

TOP1 0/10 V, TOP1 0/10V-HP

5.6

Serie Zefiro

NL1

ASSet

corrente

CNCV3V2V1C NACNCNA

Allarm Signal

Running Signal

Red Green

ADJ

{230V50 Hz N

L1

1

{{

A B

UNIT IS OFF

UNIT IS ONUNIT IS IN ALLARMCLOSECLOSE ON ON

Contact BMotor Running

SignalOPEN

CLOSE

Contact AAlarm SignalOPEN

OPEN ON

OFF

GREEN LED

OFF

OFF

RED LED

AS

6.1

Series Zefiro

6. INSTALLATION E MAINTENANCE

6.1 Preliminary operations All Zefiro fan coils are delivered packed in a box together with Use and Maintenance instructions manual which summarises informations gave in this chapter and better described in this technical manual. The factory will not cover damages and/or functional defects on the units due to ambiental factors and/or atmospheric agents which could damage the components (ex. air with high salt concentration or corrosive agents). In this case we suggest you to contact us in advance and to require components with special treatments. The adhesive label placed on the outside of the packing identifies the model, the size and the direction of the hydraulic connectors of the fan coil; the codes of the accessories mounted on the appliance are also indicated. In order to prevent accidental damages, unpack the unit only at the moment of installation; mount the casing, where applicable, just when installation has finished. After unit installation, cover it to prevent the exchanger and electrical connections can be ruined by dust and dirt. Remove the packaging opening the bottom and lifting up the box.

6.1.1 Models with casing Into Series Zefiro, in order to perform operations of installation and connection of hydraulic circuits and electrical supply, is not required to remove the component of the cabinet fixed to the body machine. To remove plastic cover repeat following actions for each side, as showed in figure below.

- lift plastic cover; - unscrew safety screw; - rotate and pull softly the plastic

side making lever on inferior part;

- put the side in a protected place.

6.2

Series Zefiro

6.2 Wall or ceiling fixing

Before proceeding the wall or ceiling fixing, verify the following points: - the unit baricenter (only for ceiling installation) cannot be higher than 2,8 m ,to permit the air to

reach the floor without any stratification effect; - the wall has to be sufficiently strong; - respect the installation distance to permit the maintenance; - No curtains or any other object must obstruct the inlet or outlet air flow;.

Follow these instructions for the mounting of the unit: - mark the fixing holes position using the example of the picture below. Leave a distance of min.

180 mm (for embedded model) between the fan coil side and the wall; for case model the distance between unit side and wall must be 200 mm at least.

- minimal distance from bottom side for VA, HA, VL and HL models, respectively from the floor and the wall, has to be at minimum 100 mm, to permit a proper air suction;

- use 4 screws (M6 L=60) with dowels φ =8 mm. - It is always advisable the use of interception taps for the water to send to the fancoil

Before the first start-up and if there are several units connected, it is advisable to open the taps one at the time to identify as soon as possible the presence of leakage. Before start-up the system check the correct drainage of the condensate from the drain pan. If needed give a slight inclination towards the discharge pipe (horizontal model).

Horizontal

Vertical

308-316-320 628-634 840-847-1250-1260 1575 1885

A 558 818 1078 1338 1598

B 538 798 1058 1318 1578

Ceiling fixed fan coil, in heating mode, decrease their efficiency if installed beyond 2,80 metres of height. If necessary, please use suction plenum to lower air inlet point

See the pictures below to know the suggested dimensions for installation.

6.3

Series Zefiro

Models with case

Models without case

6.4

Series Zefiro

6.3 Hydraulic connections To obtain the maximum heat exchange efficiency it is important to respect the indications located on the side of the fan coil unit relative to the coil water inlet and outlet. Please remember that the appliances work with reverse current circulating water compared with the direction of the air crossing the exchanger. The inversion of the order of connectors does not affect fan coil unit operation, but it does lower heat exchange performance. The valveless appliances have ½’ GF hydraulic connectors directly welded to the coil/s. The holes made on the side of the fan coil unit, in which the hydraulic connectors are put, have a shape to prevent connectors bending ; the feed pipes must be fixed with care in order to prevent exchanger manifolds bending and the risk of breaking the welds and causing leaks of water. The fan coil units with valves, instead, have ½’ GM hydraulic connectors on sizes 308…847 and ¾’ GM on size 1250…1885. After hydraulic pipes fixing , check all unions in the valve kit and their respective seals. For further information please consult paragraphs 2.5 and 4.4 of this manual. The tightness test is performed on the fan coil units fitted with the kit and valves mounted; the fitter must therefore make sure the valve assembly remains fixed in the same position and that there are no leaks. The condensate collector is connected to the drain line by a special plastic connector supplied with the appliance. The assembly instructions are indicated on an adhesive attached to the side of the fan coil unit.

6.5

Series Zefiro

6.4 Electrical wirings All Serie Zefiro fan coil work with single-phase alternate current 230V 50-60Hz Making electrical wiring, scrupulously follow the electrical diagrams attached to each appliance. The machine must be wired so that all the additional connections for operating the machine are only used on the terminal board. The company accepts no liability for electrical installations that do not comply with the wiring diagrams supplied with the machine.

6.5 Starting up the appliances

Before starting fan coil unit, make sure that: - it is connected to the earth circuit and that

suitable electrical protection devices have been installed;

- the condensation drain line is working and the drain pan discharges correctly the condensate;

- the air filter is positioned correctly; - the air delivery is not obstructed and that

nothing is touching it, especially when the electric heater is installed on the fan coil unit.

When the starting the system, the pipes must be vented. All the exchangers are fitted with air vents. This device is worked with a screw that can be accessed from the side of the fan coil unit for all coils. The vented air is discharged inside the appliance It is collected in the main tank and drained outside by the relative circuit.

When used for the first time, the fan coil unit must work for a few hours non-stop in order to run in the fan motor before it will work at maximum efficiency.

6.5.1 Delivery grilles and fixing the hatches

In the models with casing the grilles are snap-fitted to the casing. Lift up fairly strongly to remove them. The fan coil units leave the factory with the grilles positioned in such a way as to send the air to the front of the appliance. Turning the grilles by 180°, the air delivery passes from front to rear. For installations in public places such as schools, libraries and shopping centres, it may be necessary to forbid access to the control box and hydraulic connections. These accesses can be closed with the two special screws located on the outer edges of the hatches.

After being fixed, the head of the screws is covered with a cap for aesthetic reasons.

stopper

6.6

Series Zefiro

6.6 Alternative layouts

Some modifications to Zefiro Serie fan coil units can be made directly on site in order to change the layout while keeping the functionality and efficiency of the appliance unaltered

6.6.1 Inverting the hydraulic connections At times it may be necessary to invert the hydraulic connections from right to left or vice-versa due to changes in requirements or incorrectly fitted water pipes. If the fan coil unit is fitted with valves ask the company for a new valve kit, depending on whether the fan coil unit is right or left. Proceed as follows:

a) Unscrew the three screws fixing the control box (2) and screw them into the holes on the opposite side. It is not necessary to open the control box or disconnect the electrical connections, risking altering the internal cabling;

b) dismount the valves if present; c) dismount the main coil (1) unscrewing the fixing screws on the sides, thereby making the coil/s

accessible; d) unscrew the screws fixing the coil/s (3) to the sides, remove the exchanger lifting it first from the

side opposite the connectors; e) after breaking the holes in the side, turn the coil 180°, fit the manifold connectors into the new holes

and screw up using the relative holes. f) close the old holes with insulating tape; g) fix the main tank to the sides of the fan coil unit, free the blocked drain and block the old one using

a suitable silicon-based sealer; h) remount the valves, if present, using the new kit; i) fit the auxiliary coil (4) on the opposite side.

RIGHT LEFT

1 – Main tank 3 – Heat exchanger 2 - Control Box 4 - Auxiliary coil

6.7

Series Zefiro

6.6.2 Changing fan speed

The fans mounted on Zefiro fan coil units have six speeds, three of which are set by factory. For special requirements, the three alternative speeds can be used. To change operating speeds modify the autotransformer of the fan motors 308…1260 and the wiring inside the electrical panel for sizes 1575 and 1885 For details and information about which electrical connections to modify, please consult paragraph 5.1.

6.7 Maintenance

6.7.1 Removing and cleaning the filter The method for removing the filter is the same for all models. In vertical and horizontal models to remove filter just push it respectively towards the bottom or the top of the units, incline it downwards and pull it out. In VB and HB models to have access to filter just open the panel, making lever on its superior side with a screwdriver. Periodic cleaning of the filter (once a month in continuous operating conditions) ensures the fan coil unit is perfectly efficient. The filter can be cleaned with a domestic vacuum cleaner or, alternatively, when there is an excessive accumulation of dirt and dust, it can be washed with warm water and a neutral detergent. Caution:

− before reusing the filter, make sure it is perfectly dry; − do not use the fan coil unit without a filter;

6.7.2 Inspection and/or removal of the fan assembly motor (GRV) The fan assembly can easily be removed by loosening the two fixing screws located on the sides of the fan coil unit and removing it from its housing.

6.8

Series Zefiro

6.8 Examples of typical installations The following prospect illustrates some typical installations of the Silent fan coil units.

VA

VB

HA

HB HB + PAE/HF VA+PAE/V

H=2.80m MAX

HC

HC + PMZE

VC+RTZE

VD + PAE/HF

HD + RTZE

PACZE + HC + PM90ZE

PACZE + VC + PM90ZE

H=2.80m MAX

Serie Zefiro

7.1

7. APPENDIX – Performance data This paragraph contains the performance data of Zefiro Serie fancoil units. Following tables and graphs allow to choose most suitable unit for one’s requirements with sufficient accuracy.For operating conditions differing from rated ones, please consult the selection programme that can be obtained on request, by the company.

7.1 Air flows with external static pressure The datas refer to the unit working with the intake free, complete of casing and grilles, with the filter clean, temperature and ambient pressure equal to 20 °C and 1.033 bar respectively.

Pressure [Pa] Size Speed 0 10 20 30 40 50 60 70 80 90 100

1 370 348 325 299 270 236 196 136 MAX 300 277 251 222 190 151 101 MED 250 224 196 164 129 87 32

4 225 193 160 127 90 45 MIN 175 126 69

308

6

m³/h

150 103 43 1 330 308 284 258 229 195 158 111 53

MAX 300 272 244 214 182 146 104 3 255 228 199 168 131 86 29

MED 235 195 158 118 72 5 175 129 83 32

316-320

MIN

m³/h

156 103 35 1 590 549 506 462 417 369 321 266 208 143

MAX 530 485 437 390 340 290 239 185 128 MED 445 398 351 305 258 211 161 108

4 356 312 270 226 181 134 81 MIN 300 242 183 120 52

628-634

6

m³/h

286 208 137 72 10 1 916 866 812 759 700 641 580 517 454 389 322

MAX 730 694 653 606 553 499 442 384 327 270 210 3 657 607 560 514 469 424 378 331 283 229 169

MED 585 526 473 428 382 339 293 245 192 128 5 435 364 303 243 188 132 76

840-847

MIN

m³/h

390 302 232 168 107 51 1 1249 1203 1152 1093 1027 952 871 782 689 597 507

MAX 1130 1088 1042 987 923 852 768 682 595 510 429 MED 1050 987 923 862 800 737 673 607 539 469 396 MIN 860 803 749 694 640 588 533 478 422 364 302

5 636 562 506 457 412 368 324 279 232 180 115

1250-1260

6

m³/h

594 492 434 383 339 295 254 209 162 108 1 1425 1369 1311 1250 1183 1108 1030 944 851 749 641

MAX 1310 1244 1180 1116 1052 985 914 841 760 670 570 MED 1220 1165 1108 1044 980 908 832 751 666 575 479 MIN 1035 993 946 898 845 787 722 651 571 483 385

5 822 846 806 763 717 665 607 543 472 393 308

1575

6

m³/h

688 656 621 579 534 483 428 371 313 254 195 1 2050 1958 1858 1754 1646 1530 1410 1281 1145 1005 876

MAX 1850 1753 1651 1550 1446 1334 1222 1107 986 870 757 MED 1600 1522 1441 1360 1272 1182 1088 988 882 773 665

4 1400 1332 1258 1184 1105 1020 930 837 736 636 529 MIN 1250 1182 1109 1035 960 879 794 707 614 524 420

1885

6

m³/h

1050 984 915 845 771 698 618 535 460 378 243

Serie Zefiro

7.2

7.2 Heat exchange outputs

7.2.1 Cooling outputs with water coil The following tables indicate the cooling output (total and sensitive), the flow of water circulating in the coil, the hydraulic pressure drop, the air flow achieved by Zefiro series of fancoil units. The ambient temperature and relative humidity conditions and the temperature of the circuit water are as described.

Main Exchanger

Room Temperature 27 °C (B.S.) – 47% Water Temperature 7 °C (In) – 12 °C ( Out)

SIZE unit 1 2 3 4 5 6

Total cooling capacity KW 1,22 0,97 0,92 0,83 0,73 0,66 Sensible capacity KW 1,05 0,93 0,88 0,79 0,7 0,62

Water flow rate l/h 209,3 166,4 157,9 142,8 125,4 112,6 308

Pressure drop kPa 2,6 1,4 0,6 0,2 0,1 0 Total cooling capacity KW 1,53 1,43 1,27 1,2 0,93 0,89

Sensible capacity KW 1,24 1,18 1,05 1,03 0,78 0,73 Water flow rate l/h 262,5 246,1 217,7 205,5 159,3 152,3

316

Pressure drop kPa 7,2 4,7 2,9 2 1,1 0,8 Total cooling capacity KW 1,93 1,81 1,6 1,51 1,17 1,06


320

Pressure drop kPa 14,6 9,6 6 4,2 2,2 1,6 Total cooling capacity KW 2,67 2,49 2,2 1,86 1,63 1,57


628

Pressure drop kPa 8,6 5,5 3,4 2,1 1,3 1 Total cooling capacity KW 3,18 2,94 2,58 2,15 1,85 1,73


634

Pressure drop kPa 7 4,4 2,7 1,6 1 0,8 Total cooling capacity KW 4,28 3,67 3,43 3,17 2,55 2,35


840

Pressure drop kPa 24,9 13,8 9,3 6,5 3,5 2,6 Total cooling capacity KW 5,11 4,34 4,04 3,71 2,91 2,68

Sensible capacity KW 3,93 3,32 3,09 2,84 2,17 1,98 Water flow rate l/h 876,7 744 692,6 635,7 499,4 459,4

847



1250



1260



1575

Pressure drop kPa 14,8 9,8 6,9 4,3 2,9 1,7

Serie Zefiro

7.3

Total cooling capacity KW 10,25 9,35 8,33 7,58 6,99 6,14 Sensible capacity KW 8,26 7,54 6,77 6,13 5,64 4,88

Water flow rate l/h 1758,6 1603,9 1428,8 1300,2 1199,1 1053,2 1885

Pressure drop kPa 31,9 21,2 13,9 9,6 7 4,8 7.2.2 Heating outputs with water coil

Main Exchanger

Room Temperature 20°C Water Temperature 70 °C (In) - 60 °C (Out)

SIZE unit 1 2 3 4 5 6

Heating capacity KW 2,94 2,62 2,3 2,13 1,79 1,58 Water flow rate l/h 258,2 230,2 202,3 187,3 157,4 139 308 Pressure drop kPa 3,9 2,4 1,5 1 0,6 0,5

Heating capacity KW 3,68 3,43 3,03 2,84 2,25 2,05 Water flow rate l/h 323,7 301,8 266,7 249,9 198,2 180,5 316 Pressure drop kPa 7,9 5,3 3,4 2,5 1,3 0,8

Heating capacity KW 4,27 3,95 3,46 3,24 2,52 2,28 Water flow rate l/h 374,6 346,7 303,9 284,9 221 200,4 320 Pressure drop kPa 13,6 9,3 5,9 4,2 2,1 1,6

Heating capacity KW 6,42 5,94 5,19 4,35 3,8 3,65 Water flow rate l/h 564,5 522,4 456 382,4 334 320,7 628 Pressure drop kPa 9,2 6,2 3,8 2,2 1,4 1

Heating capacity KW 7,43 6,81 5,9 4,9 4,24 4,07 Water flow rate l/h 651,8 597,9 518 430,4 372,3 357,5 634 Pressure drop kPa 7,1 4,9 2,9 1,7 1,1 0,9

Heating capacity KW 9,81 8,26 7,64 7 5,51 5,05 Water flow rate l/h 861,9 726 671,7 615,2 484,1 443,7 840 Pressure drop kPa 24,7 14,1 9,5 6,5 3,4 2,4

Heating capacity KW 11,37 9,46 8,71 7,94 6,17 5,62 Water flow rate l/h 997,9 830,8 764,7 696,9 541,4 493,4 847 Pressure drop kPa 19,3 11 7,5 5,2 2,6 1,8


Heating capacity KW 14,98 13,37 12,63 10,76 8,38 7,95 Water flow rate l/h 1316 1174,7 1109,3 945 736,2 697,7 1260 Pressure drop kPa 29,5 19,9 14,2 8,5 4,3 3,2

Heating capacity KW 16,8 15,75 14,9 13,04 11,44 9,29 Water flow rate l/h 1474,9 1382,6 1307,9 1144,4 1003,8 815,2 1575 Pressure drop kPa 15 10,4 7,4 4,7 3 1,6

Heating capacity KW 22,11 20,71 18,51 16,7 15,2 13,2 Water flow rate l/h 1941,8 1818,2 1624,5 1465,9 1333,6 1158,1 1885 Pressure drop kPa 31,8 22,1 14,6 9,8 7 4,6

Serie Zefiro

7.4

Main Exchanger

Room Temperature 20°C Water Temperature 50 °C (In) – 43,3 °C (Out)

SIZE unit 1 2 3 4 5 6


Heating capacity KW 2,16 2,02 1,78 1,67 1,33 1,21 Water flow rate l/h 281,9 262,9 232,6 218 173 157,6 316 Pressure drop kPa 6,6 4,4 2,8 2 1,1 0,7

Heating capacity KW 2,52 2,33 2,05 1,92 1,49 1,35 Water flow rate l/h 328,8 304,4 267 250,3 194,4 176,4 320 Pressure drop kPa 11,6 7,9 5 3,5 1,8 1,3

Heating capacity KW 3,78 3,49 3,05 2,56 2,24 2,15 Water flow rate l/h 492,3 455,7 398,1 334,1 292 280,4 628 Pressure drop kPa 7,7 5,1 3,1 1,8 1,1 0,8

Heating capacity KW 4,37 4,02 3,48 2,89 2,51 2,41 Water flow rate l/h 570,3 523,4 453,7 377,2 326,4 313,5 634 Pressure drop kPa 6 4,1 2,5 1,4 0,9 0,7

Heating capacity KW 5,78 4,88 4,51 4,13 3,26 2,99 Water flow rate l/h 753,8 635,6 588,2 538,8 424,6 389,3 840 Pressure drop kPa 20,8 11,8 8 5,4 2,8 2



Heating capacity KW 8,84 7,89 7,46 6,36 4,96 4,7 Water flow rate l/h 1151,8 1028,7 971,8 828,5 646,2 612,5 1260 Pressure drop kPa 25 16,7 11,9 7,1 3,6 2,7

Heating capacity KW 9,9 9,28 8,79 7,7 6,76 5,49 Water flow rate l/h 1289,2 1209 1144 1002,2 879,6 715 1575 Pressure drop kPa 12,6 8,7 6,2 3,9 2,5 1,4

Heating capacity KW 13,04 12,22 10,93 9,87 8,99 7,81 Water flow rate l/h 1698,3 1591,6 1423 1284,7 1169,8 1016,5 1885 Pressure drop kPa 26,5 18,4 12,1 8,1 5,7 3,7

Serie Zefiro

7.5

Auxiliary Exchanger Room Temperature 20°C Water Temperature 70 °C (In) - 60 °C (Out)

SIZE unit 1 2 3 4 5 6

Heating capacity KW 2,18 1,93 1,72 1,6 1,38 1,23 Water flow rate l/h 191,5 169,7 151,1 140,6 121,3 108,1 308 Pressure drop kPa 7 5,1 3,9 3,7 3 2,7



Heating capacity KW 3,6 3,36 3 2,82 2,51 2,41 Water flow rate l/h 316,5 295,1 263,6 247,6 220,3 212,1 628 Pressure drop kPa 22,9 19,1 14,6 11,9 10,8 11,3

Heating capacity KW 3,6 3,36 3 2,82 2,51 2,41 Water flow rate l/h 316,5 295,1 263,6 247,6 220,3 212,1 634 Pressure drop kPa 22,9 19,1 14,6 11,9 10,8 11,3

Heating capacity KW 5,25 4,54 4,24 4 3,5 3,23 Water flow rate l/h 461,3 399 372,6 375,9 307,7 284,2 840 Pressure drop kPa 8,1 6 5 4,4 3,6 3,5

Heating capacity KW 5,25 4,54 4,24 4,28 3,5 3,23 Water flow rate l/h 461,3 399 372,6 375,9 307,7 284,2 847 Pressure drop kPa 8,1 6 5 4,4 3,6 3,5





Serie Zefiro

7.6

7.3 Summary graphs COOLING OUTPUTS The following summary graphs indicate heating outputs for the various sizes of fancoil units according to different air flows. The curves for each size refer to the type of coil: 2 rows, 3 rows, 4 rows, 1 additional row. The reference thermodynamic conditions are shown below:

Cooling Capacity

Room temperature 27°C Water temperature 7 °C (In) - 12 °C (Out)

Serie Zefiro

7.7


Serie Zefiro

7.8


Serie Zefiro

7.9


Serie Zefiro

7.10


Serie Zefiro

7.11


7.4 Summary graphs HEATING OUTPUTS The following summary graphs indicate the heating outputs for the various sizes of fan coil units according to different air flows. The curves for each size refer to the type of coil: 3 rows, 4 rows, 1 additional row. The reference thermodynamic conditions are shown below:


Serie Zefiro

7.12


Serie Zefiro

7.13


Serie Zefiro

7.14


Serie Zefiro

7.15


Serie Zefiro

7.16


Serie Zefiro

7.17

Room temperature 20°C Water temperature 70 °C (In) - 60 °C (Out) auxiliary coil

Serie Zefiro

7.18


Serie Zefiro

7.19


Serie Zefiro

7.20

7.5 Power Sound level at rated air flows The power irradiated by a noise source is a measurement that is characteristic of the source itself and is not affected by external factors such as the listener’s ear, the place and the distance of the listener. The data refers to the unit working with the inlet free with casing, grilles and filter

. Power Sound level Lw

Size [Hz] 125 250 500 1000 2000 4000 8000 TOT

[dB(A)] 1 37,6 41,6 42,7 36,9 32,5 23,6 14,7 47,0

MAX 34,3 38,2 38,4 32,0 26,2 16,6 11,3 43,0 MED 32,6 35,0 34,5 27,8 20,8 11,5 11,4 39,0

4 30,3 32,6 31,1 22,9 15,4 9,6 8,9 36,0 MIN 28,5 28,4 24,4 9,1 7,1 7,2 10,2 29,0

308

6 28,1 25,5 21,4 5,4 6,1 8,1 9,1 27,0 1 37,0 41,9 42,0 37,6 34,2 23,3 14,7 47,0

MAX 34,5 38,5 37,6 32,6 25,5 17,3 12,2 43,0 3 31,4 35,6 34,5 29,4 20,4 14,3 12,2 40,0

MED 29,5 32,6 30,5 24,4 15,3 15,3 10,2 37,0 5 25,4 28,5 24,4 11,2 11,3 13,3 10,2 31,0

316

MIN 24,3 25,4 20,3 1,1 9,2 13,3 10,2 29,0 1 39,6 45,6 45,6 42,6 37,6 29,5 18,3 51,0

MAX 35,6 41,7 42,6 37,7 31,6 22,3 13,3 47,0 3 33,4 38,6 38,5 33,5 26,4 15,3 11,2 43,0

MED 31,4 36,5 34,6 29,5 20,3 9,3 9,2 41,0 5 28,5 30,5 27,5 19,3 9,2 5,2 11,2 33,0

320

MIN 28,5 29,4 24,5 16,3 6,1 5,2 14,3 31,0


Serie Zefiro

7.21

Power Sound level Lw

Size [Hz] 125 250 500 1000 2000 4000 8000 TOT

[dB(A)] 1 39,6 44,6 45,7 39,6 36,5 25,4 16,3 50,0

MAX 36,5 41,6 42,6 35,5 30,5 19,4 13,2 46,0 MED 33,5 37,7 38,6 31,5 25,5 15,3 12,3 43,0

4 32,5 35,5 35,5 28,4 21,4 14,2 13,2 40,0 MIN 29,5 32,4 28,4 19,3 17,2 13,3 13,3 32,0

628

6 29,5 29,4 25,4 15,3 17,2 13,3 12,2 31,0 1 39,5 43,7 45,7 39,6 36,5 25,4 16,2 50,0

MAX 36,6 40,7 41,7 36,5 30,5 18,3 14,3 47,0 MED 33,6 38,5 38,6 33,5 26,4 14,2 12,3 44,0

4 32,5 36,5 35,6 29,5 21,3 9,2 12,2 41,0 MIN 29,5 32,5 29,4 20,4 12,2 6,2 12,2 35,0

634

6 28,5 31,5 26,4 18,2 10,3 7,2 13,2 33,0 1 43,7 49,7 49,8 44,6 46,7 34,5 22,4 56,0

MAX 39,6 45,7 47,6 40,6 39,7 27,5 15,3 51,0 3 36,6 42,6 42,6 37,6 32,5 20,4 12,2 48,0

MED 33,5 39,6 38,6 35,5 26,4 14,3 9,3 44,0 5 27,5 34,5 30,6 28,4 15,2 7,2 13,2 37,0

840

MIN 26,4 33,5 28,4 22,4 10,3 4,2 10,2 34,0 1 43,7 49,7 49,8 44,7 43,7 34,5 21,4 55,0

MAX 39,7 45,7 46,8 40,6 37,6 26,4 15,3 51,0 3 36,6 42,6 42,6 37,6 31,5 20,3 13,3 48,0

MED 34,5 39,6 38,5 35,5 25,5 15,3 11,3 45,0 5 29,5 34,6 31,4 28,4 17,3 11,3 12,2 37,0

847

MIN 28,5 35,5 28,4 22,4 16,3 11,3 11,2 34,0 1 51,8 56,9 56,8 53,8 51,8 48,7 39,5 64,0

MAX 48,7 53,8 53,8 50,7 49,7 43,6 33,5 61,0 MED 45,7 50,8 50,7 46,7 47,7 38,5 26,5 58,0 MIN 42,6 47,7 48,7 42,7 44,7 32,5 20,4 55,0

5 36,5 41,6 40,6 36,5 32,5 19,4 13,2 47,0

1250

6 34,5 39,6 37,6 33,5 26,5 14,3 11,2 44,0 1 51,7 56,8 56,9 53,7 51,7 46,6 36,6 63,0

MAX 48,8 54,7 54,7 50,7 49,7 42,6 31,5 61,0 MED 45,7 51,7 51,8 46,8 46,7 37,5 25,5 58,0 MIN 42,6 48,7 49,8 43,6 43,6 32,6 20,3 54,0

5 36,5 42,6 42,6 37,5 32,4 21,4 14,3 48,0

1260

6 34,5 39,7 38,7 35,5 27,5 18,3 12,3 45,0 1 53,7 58,9 59,9 55,9 54,8 49,8 41,6 66,0

MAX 51,8 57,8 57,9 54,7 53,7 47,7 38,6 64,0 MED 48,7 54,8 55,8 50,8 50,8 43,7 33,6 62,0 MIN 44,7 51,7 51,8 47,6 47,7 38,6 27,5 59,0

5 41,6 47,6 49,7 42,7 42,6 31,6 21,3 54,0

1575

6 36,6 43,6 45,6 38,6 35,6 24,5 15,3 49,0 1 53,9 59,8 59,8 57,8 54,8 53,8 42,6 66,0

MAX 52,8 57,9 57,8 54,9 52,8 49,7 39,6 63,0 3 49,8 54,8 54,9 51,8 50,7 43,7 33,6 60,0

MED 46,8 51,8 51,8 47,8 47,7 38,5 28,4 58,0 MIN 43,7 48,7 49,8 43,7 44,7 32,5 22,4 53,0

1885

6 39,7 44,7 45,8 39,7 40,6 26,4 20,3 51,0

Serie Zefiro

7.22

7.6 Pressure Sound level Pressure Sound level is the perception that a person has in the presence of a noise source. Pressure data are calculated the sound power measured, supposing that the unit is installed in a 100 m³ room, the reverberation time is 0.3 s, and the distance between the observer and the fan coil unit is equal to 1.5 m; a reflecting wall near the appliance is considered. The data refers to the unit working with the inlet free with casing and grilles.

Sound pressure level at 1,5 m from the unit, at min. std speed in a room of 100 m3, reverberating time 0,3 s, with one reflecting adjacent surface to the unit Pressure Sound level Lp

Size [Hz] 125 250 500 1000 2000 4000 8000 TOT

[dB(A)] 1 29,2 33,2 34,3 28,5 24,1 15,2 6,3 38,6

MAX 25,9 29,8 30,0 23,6 17,8 8,2 2,9 34,6 MED 24,2 26,6 26,1 19,4 12,4 3,1 3,0 30,6

4 21,9 24,2 22,7 14,5 7,0 1,2 0,5 27,6 MIN 20,1 20,0 16,0 0,7 1,3 1,2 1,8 20,6

308

6 19,7 17,1 13,0 3,0 2,3 0,3 0,7 18,6 1 28,6 33,5 33,6 29,2 25,8 14,9 6,3 38,6

MAX 26,1 30,1 29,2 24,2 17,1 8,9 3,8 34,6 3 23,0 27,2 26,1 21,0 12,0 5,9 3,8 31,6

MED 21,1 24,2 22,1 16,0 6,9 6,9 1,8 28,6 5 17,0 20,1 16,0 2,8 2,9 4,9 1,8 22,6

316

MIN 15,9 17,0 11,9 -7,3 0,8 4,9 1,8 20,6 1 31,2 37,2 37,2 34,2 29,2 21,1 9,9 42,6

MAX 27,2 33,3 34,2 29,3 23,2 13,9 4,9 38,6 3 25,0 30,2 30,1 25,1 18,0 6,9 2,8 34,6

MED 23,0 28,1 26,2 21,1 11,9 0,9 0,8 32,6 5 20,1 22,1 19,1 10,9 0,8 -3,2 2,8 24,6

320

MIN 20,1 21,0 16,1 7,9 2,3 -3,2 5,9 22,6 1 31,2 36,2 37,3 31,2 28,1 17,0 7,9 41,6

MAX 28,1 33,2 34,2 27,1 22,1 11,0 4,8 37,6 MED 25,1 29,3 30,2 23,1 17,1 6,9 3,9 34,6

4 24,1 27,1 27,1 20,0 13,0 5,8 4,8 31,6 MIN 21,1 24,0 20,0 10,9 8,8 4,9 4,9 23,6

628

6 21,1 21,0 17,0 6,9 8,8 4,9 3,8 22,6 1 31,1 35,3 37,3 31,2 28,1 17,0 7,8 41,6

MAX 28,2 32,3 33,3 28,1 22,1 9,9 5,9 38,6 MED 25,2 30,1 30,2 25,1 18,0 5,8 3,9 35,6

4 24,1 28,1 27,2 21,1 12,9 0,8 3,8 32,6 MIN 21,1 24,1 21,0 12,0 3,8 -2,2 3,8 26,6

634

6 20,1 23,1 18,0 9,8 1,9 -1,2 4,8 24,6 1 35,3 41,3 41,4 36,2 38,3 26,1 14,0 47,6

MAX 31,2 37,3 39,2 32,2 31,3 19,1 6,9 42,6 3 28,2 34,2 34,2 29,2 24,1 12,0 3,8 39,6

MED 25,1 31,2 30,2 27,1 18,0 5,9 0,9 35,6 5 19,1 26,1 22,2 20,0 6,8 1,2 4,8 28,6

840

MIN 18,0 25,1 20,0 14,0 1,9 4,2 1,8 25,6 1 35,3 41,3 41,4 36,3 35,3 26,1 13,0 46,6

MAX 31,3 37,3 38,4 32,2 29,2 18,0 6,9 42,6 3 28,2 34,2 34,2 29,2 23,1 11,9 4,9 39,6

MED 26,1 31,2 30,1 27,1 17,1 6,9 2,9 36,6 5 21,1 26,2 23,0 20,0 8,9 2,9 3,8 28,6

847

MIN 20,1 27,1 20,0 14,0 7,9 2,9 2,8 25,6

Serie Zefiro

7.23

Sound pressure level at 1,5 m from the unit, at min. std speed in a room of 100 m3, reverberating time 0,3 s, with one reflecting adjacent surface to the unit Pressure Sound level Lp

Size [Hz] 125 250 500 1000 2000 4000 8000 TOT

[dB(A)] 1 43,4 48,5 48,4 45,4 43,4 40,3 31,1 55,6

MAX 40,3 45,4 45,4 42,3 41,3 35,2 25,1 52,6 MED 37,3 42,4 42,3 38,3 39,3 30,1 18,1 49,6 MIN 34,2 39,3 40,3 34,3 36,3 24,1 12,0 46,6

5 28,1 33,2 32,2 28,1 24,1 11,0 4,8 38,6

1250

6 26,1 31,2 29,2 25,1 18,1 5,9 2,8 35,6 1 43,3 48,4 48,5 45,3 43,3 38,2 28,2 54,6

MAX 40,4 46,3 46,3 42,3 41,3 34,2 23,1 52,6 MED 37,3 43,3 43,4 38,4 38,3 29,1 17,1 49,6 MIN 34,2 40,3 41,4 35,2 35,2 24,2 11,9 45,6

5 28,1 34,2 34,2 29,1 24,0 13,0 5,9 39,6

1260

6 26,1 31,3 30,3 27,1 19,1 9,9 3,9 36,6 1 45,3 50,5 51,5 47,5 46,4 41,4 33,2 57,6

MAX 43,4 49,4 49,5 46,3 45,3 39,3 30,2 55,6 MED 40,3 46,4 47,4 42,4 42,4 35,3 25,2 53,6 MIN 36,3 43,3 43,4 39,2 39,3 30,2 19,1 50,6

5 33,2 39,2 41,3 34,3 34,2 23,2 12,9 45,6

1575

6 28,2 35,2 37,2 30,2 27,2 16,1 6,9 40,6 1 45,5 51,4 51,4 49,4 46,4 45,4 34,2 57,6

MAX 44,4 49,5 49,4 46,5 44,4 41,3 31,2 54,6 3 41,4 46,4 46,5 43,4 42,3 35,3 25,2 51,6

MED 38,4 43,4 43,4 39,4 39,3 30,1 20,0 49,6 MIN 35,3 40,3 41,4 35,3 36,3 24,1 14,0 44,6

1885

6 31,3 36,3 37,4 31,3 32,2 18,0 11,9 42,6

Calculated NR noise rating Size

308 316 320 628 634 840 847 1250 1260 1575 1885

1 30 30 33 34 35 39 39 44 45 50 50 2 27 27 29 29 29 33 33 42 42 45 47 3 20 20 24 24 24 28 28 40 40 43 45 4 15 15 20 20 21 25 25 37 36 40 40 5 10 10 12 12 14 18 18 30 30 36 37

NR

6 8 9 9 10 12 14 14 25 25 30 33

Serie Zefiro

7.24

7.7 Working with water - glycol

7.7.1 Concentrations of glycol Glycol is a substance that when added to water, prevents hydraulic circuits from freezing and breaking. The following table indicates the percentages (in weight and volume) of glycol to add to the water in order to reduce its freezing point.

Freezing point °C % in weight % in volume

0 0 0 -5 10 9,6

-10 20 19,4 -15 28 27,4 -20 34 33,4 -25 40 39,6 -30 44 43,7

7.7.2 Performance variations with water - glycol The water/glycol mixture has higher specific weight and viscosity values than natural water and such as to affect the heat output of the fan coil unit. To obtain the same performance as natural water, the rate of flow of the mixture and the head of the pumps must normally be increased in order to make up for the greater pressure drop. The following two graphs indicate the corrective pressure drop and rate of flow coefficients

Pressure drop correction coefficient

% glicole in weight

50%

10% 20%

30%

40%

0%

Serie Zefiro

7.25

Water/glycol mixture rate of flow correction coefficient

% glicole in weight

x

Technical data shown in this booklet are not binding. The Company shall have the right to introduce at any time

whatever modifications considered necessary to the improvement of the product

Documents

Series Zefiro - Arfit · Series Zefiro 1.3 1.2.1 Internal structure The internal structure is made from galvanised sheet metal and is 0.8 mm or 1 mm thick, depending on the