Alfamini-Alfamax Manuale Tecnico UK 6180971 02 · 2016. 9. 16. · Alfamini-Alfamax series Trattamento dell’aria High efﬁ ciency air handling unit for wellness areas Air ﬂ ow

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Alfamini-Alfamax seriesHigh effi ciency air handling unit for wellness areas

Air fl ow rates from 4.000 to 25.000 m3/h

SELECTION MANUAL

1012

- 618

0971

-rev

.02

FAST S.p.A.

ISO 9001:2000 - Cert.n° 0882/4

Index Engl

ish

General 4

Energy efficiency 5

Use limits 5

Description of the Alfamini/ Alfamax units 6

Accessories 8

Nominal technical data 9

Operating schemes for Alfamini - Alfamax 10

Control system 11

Simplified method for the unit selection 12

Operating limits 14

Units performance 15

Accessible plate heat exchanger (standard) 20

Hydraulic schemes for the connections 21

Dimensions 22

Selection manual 4 GB

High effi ciency air handling unit for wellness areas - Alfamini-Alfamax Series

General

In the modern wellness centers, swimming pools or SPA, the tem-perature control and humidity conditions of the environment represent a crucial require-ment for the visitors comfort. In particular, the pool area requires a constant balance at any time of year; the continu-ing variation from dry and wet conditions of the users requires a perpetual and effective moni-toring of both air temperature (max. 2-3°C higher than water temperature) and relative humidity. With too high humidity values, breathing is actually inhibited while too low values can wors-en the cold feeling as the skin evaporation is accelerated. The particular wellness needs (high temperatures and con-stant relative humidity con-trol), the need to maintain cer-tain temperatures in the pool reintegrating hygienic require-ments for a portion daily (usu-ally at least 5% of the volume of the tank every day), the great demand for hot water for sanitary use, the considerable

air flow requirements and the con-trol of sensitive and latent loads to keep as low as possible the ther-mal differential between input and environment are all aspects that have a strong incentive for the designer to research plant types best suited to reduce energy con-sumptions.

GIVEN THE PECULIARITY OF THE ENVIRONMENTS THAT CAN BE SERVED BY ALFAMINI AND ALFAMAX UNITS, THIS MANUAL IS ONLY INTENDED TO PROVIDE PRODUCT INFORMATION AND INDICATIONS FOR THE CHOICE OF UNITS.SPECIAL REQUIREMENTS NEED A BESPOKE STUDY: IN THIS CASE PLEASE CONTACT THE TECHNICAL -COMMERCIAL FAST DEPARTMENT.To meet the demands of the before described environments FAST SpA offers the AlfaMini (5 sizes with nominal flow rates from 2.500 to 13.000 m³/h) and Alfamax units (3 sizes with nominal flow rates from 16.000 to 25.000 m³/h).

The main unit function, which is a “plug and play” machine, is to dehumidify while providing control of wellness conditions of the envi-ronment.The unit combines a heat pump, a system of sensible and latent heat recovery from humid air expelled from premises and a “free” heating system of the water pool making it optimized for the reduction of energy consumption.The structure and all internal com-ponents are designed for maximum corrosion resistance.



Energy efficiency

Operating limits

The rooms in which the Alfamini and Alfamax units operate distinguish for being particularly “aggressive”.

AIR CHARACTERISTICS :The units are suitable to handle air from swimming pools treated with chlorine-based disinfectants.

WATER CHARACTERISTICS :Maximum concentration of chlorine in water: 1.4 mg/l.

ANY FURTHER APPLICATION THAT PROVIDES FOR CONCENTRATIONS IN THE AIR OR WATER OF PARTICULAR DISINFECTANTS OR OTHER SPECIAL SUBSTANCES NEEDS A PRELIMINARY EVALUATION BY OUR TECHNICAL-COMMERCIAL OFFICE, AS RESULT GUARANTEE FAILURE.

AVOID DIRECT CONTACT BETWEEN UNITS AND PURE DETERGENTS.

PROPERLY PROTECT THE PLATE EXCHANGERS OF THE REFRIGERATION CIRCUIT WITH SUITABLE WATER FILTERS TO AVOID CLOGGING.

Facilities where the units of the Alfamini and Alfamax series find appil-cation (swimming center, wellness area, etc..) are characterized by a very high energy consumption. The air handling units should therefore be optimized for the least possible impact in the energy balance of the system.

The technical solutions adopt-ed by the units are able to reduce the energy consumption through:

- Use of efficient energy recovery from the exhaust air. The recovery system consists of a single (for the Alfamini series) or double (for Alfamax) plate cross-flow heat recovery unit;

- Use of a heat pump with ener-gy recovery function from the exhaust air and energy integra-tion into the supply air flow.

The cooling system operates with refrigerant R410A: the TEWI Index (Total Equivalent Warming Impact), which represents the parameter relat-ed to emissions of refrigerant during the life cycle of the units and those due to the CO2 emissions for energy production, is lower than all other types of refrigerant currently available. The circuit is equipped with an elec-tronic expansion valve, which unlike the conventional thermal expan-sion valve, it allows to optimize the operation of the compressor thereby reducing the electricity consumption.

- Use of high efficiency plug-fans equipped with electric motors with efficiency class EFF1.The direct coupling between fan and motor allows for the reducing of losses due to transmission (belt-pulley).These power losses can reach up to 20% of the absorbed power of the fan shaft;

- Use of inverter devices for the electric motors speed control of the “plug fans”;

A logic control with automatic han-dling of operation cycles, so made to reduces the energy consumption.



Alfamini/Alfamax: components location

1 Compressors cabinet separate from air flow

2 Evaporating heat exchange coil

3 Condensing heat exchange coil

4 Water heat exchange coil

5 Recirculation damper

6 Recirculation damper for “Alfa” cycle

7 3-way valve with modulating actuator 24V

8 Fresh air damper equipped with actuator

9 Exhaust damper equipped with actuator

10 Exhaust fan (no. 2 for Alfamax)

11 Supply fan (no. 2 for Alfamax)

12 G4 plan filters (EN779)

13 F9 soft bags (EN779)

14 Drops separator

15 Cross flow plate heat recovery unit

16 Electrical panel and electronic controller

17 Plate heat exchanger for heat transfer to the swim-ming pool water

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ALFAMINI

ALFAMAX



These units, in the standard execu-tions, are constuìituted by a sec-tion which internally raggruppa the supply/exhaust fans and fi lters, and a further section equipped with refrigerant circuit and from heat recovery units.

FRAMEThe bearing frame is made of alu-minium profiles with anodisazion treatment which grants the nec-essary protection to the corrosion due to the potentially aggressive atmosphere.To facilitate the internal and exter-nal cleaning and avoid the dust build-up, the edges are rounded.Profiles are linked each other through nylon corners reinforced with glass fi bre.All fi xing screws are Marutex brand to grant an exceptional resistance to corrosion.

CASINGThe casing is made of sandwich panels with 50 mm thick fi xed to the frame with proper blocking pro-fi les.This fi xing system permits uniformpressure over the casing, providingexcellent air and water tightness (according to the EN 1886).Panels are made of internal surface in pre-painted galvanized steel, external surface in pre-painted galvanized steel and insulation by means of injected polyurethane with density 42 kg/m3.The accessible doors use selfclosing handles.Furthermore, all bearing elements and the components closings and are completely painted to guaran-tee the maximum resistance to cor-rosion.The inferior surface of the unit is equipped with draining panels in pre-painted galvanized steel with central discharge.

Upon request panels can be made in different materials for the sheets and mineral wool (density 40 kg/m3 or 100 kg/m3) as insulator.It is advisable to verify the dif-ferent options with Fast technical offi ce to check the feasibility. BASEMENTThe basement is steady for all sizes and made in galvanised steel sheet.

CROSS FLOW STATIC RECOVERY The energy recovery of the exhaust air acts through a single (for the Alfamini series) or double (for the Alfamax series) cross flow plate heat recuperator air/air. The heat recovery units are sub-jected to a complete paint treat-ment.

DAMPERSIn the standard confi guration, the unit is equipped with 4 dampers:- a damper placed outside, on the exhaust air fl ow;- a damper placed outside, on the fresh air fl ow;- a recirculation damper (used to permit the maximum speed of the room air fl ow);- a recirculation damper placed before the heat recuperator to make the “alfa cycle”.All dampers are made of anodized alluminium and each control-led by modulating actuators 24V (with spring return for the external dampers).The accurate construction allows for the reducing of the air laeck-age.

FAN SECTIONFans sections are epoxy painted resistant to corrosion, equipped with “plug fans” with wheels with high performance backward-curved blades. Electric motors with effi ciency class EFF1 driven to the wheel, to be controlled by inverter

(standard).

FILTERSPanel fi lters are included on theexhaust (effi ciency class G4 in com-pliance with EN779) and panel + bag fi lters on the supply (effi ciency class G4 + F9 in compliance with EN779) which allow to respect the norms currently in force referring to room air quality. A differential fl ow switch for the clogging fi lters is supplied on the supply/exhaust as standard.

REFRIGERANT CIRCUITIt is equipped with scroll com-pressor with rubber anti-vibration dampers, exchange coils refriger-ant gas/air with copper pipes and painted aluminium fi ns and frame, fi ltration devices, electronic expan-sion valve, liquid receiver, drier fi lter, control (pressure transducers and lights) and protection (high and low pressure switches), connections in brazed copper, ecologic refriger-ant R410A.The cooling circuit is inserted in acompartment isolated from the airfl ow to facilitate the control andmaintenance operations.

WATER HEATING COILCoil is completely painted to grant the highest resistance to corro-sion. The coil is standard equipped with a 3-way valve with 24V mod-ulating actuators.

COMPLETE CONTROL BOARDIt is installed inside the unit. Electrical installation for the con-nections of power and signal, installation pipe with cable-fixing clamp and sleeve accessories, and protection class IP44.

Alfamini ed Alfamax descriptions



Accessories

PROTECTION ROOFBuilt as standard in pre-painted sheet. It is a compulsory acces-sory if the Alfamini / Alfamax unit should be installed outside.

REMOTE PANELThe remote panel allows to man-age all functions of the unit con-trol system. The remote control panel is supplied without cable connection between it and the board (we recommend using a Belden 3105A).

The maximum permitted length of the cable is 50m. For lengths over 50m, please contact the FAST tech-nical sales office.

SINGLE HEAT EXCHANGER TO REHEAT THE POOL WATERThis is a heat exchanger using refrigerant and water pool. The exchanger is used as a replacement of the double-plate heat exchang-er.

For further technical information about this exchanger please con-tact the FAST technical sales.

FURTHER ACCESSOR IES ARE AVAILABLE UPON REQUEST.

MICROPROCESSOR CONTROL AND REGULATION

The unit has a microprocessor con-trol system, able to handle the dif-ferent operating modes, providing maximum energy efficiency in all conditions. The RS485 interface card is supplied standard (MODBUS protocol) to be used for connec-tion to the supervision systems and remote control.The electronic control, accord-ing to the variable opening of the dampers and their combination, acts in the following mode:

- Automatic management of the operation mode both for handling and functions;- Dehumidification with external air;- Energy recovery with the help of the cooling system;- Automatic switching of the ALFA cycle (particular cycle in which the cooling system participates in the dehumidification of the air to be treated);

- Management of the signal to acti-vate or not the heat exchanger for the pool water heating through a thermostat (not provided);The operating cycles are shown and well-documented in the prop-erly section.

HEAT EXCHANGE SYSTEM TO REHEAT THE POOL WATER

Heat exchange system to free reheat the swimming pool water composed by a double plate con-denser.One of the exchangers is installedin the cooling circuit of the unit inside the machine: the heat exchange takes place between the refrigerant and not aggressive water. The second one is for the swimming pool water, with pos-sibility of inspection, in stainless steel AISI 316L and is supplied loose.

The hydraulic circuit between thetwo plate exchangers has to be completed with the necessary components (pump, water filter, expansion valve, valves, etc.) to installers charge.



Nominal technical data

Alfamini - Alfamax 025 040 060 100 130 160 200 250Max. air fl ow (supply/exhaust) m³/h 2500 4000 6300 10000 13000 16000 20000 25000Static available pressure (supply/exhaust) Pa 400 400 400 400 400 400 400 400

Recuperators recovered capacity 1 kW 7,9 12,6 20,4 32,0 41,5 59,6 68,6 89,2

Max. recuperators efficiency 1 % 80,8 79,3 80,1 79,5 79,4 93,0 86,0 89,0Recovered capacity of the refrigerant circuit 1(heating capacity of the condensing coil) kW 7,5 10,5 21,3 31,7 45,7 46,3 53,6 69,4

Total recovered capacity 1 kW 15,4 23,1 41,6 63,7 87,3 105,9 122,2 158,6

Compressors absorbed capacity1 kW 1,3 1,6 3,7 6,0 8,4 8,5 9,2 12,8

COP 1 - 11,8 14,4 11,2 10,6 10,4 12,5 13,3 12,4

Total dehumidification capacity 1 kg/h 15,5 25,2 40,1 63,7 82,7 102,2 127,6 159,5

Shaft power of the supply fan kW 1 x 1,2 1 x 2,1 1 x 3,1 1 x 5,1 1 x 6,5 2 x 4,6 2 x 6,0 2 x 7,8

Shaft power of the exhaust fan kW 1 x 0,9 1 x 1,5 1 x 2,2 1 x 3,8 1 x 4,8 2 x 3,5 2 x 4,2 2 x 5,3

Type / compressors no. n° Scroll / 1

Water heating coil (standard)Max. capacity (without active recovery) 1 kW 26,1 35,4 61,6 95,3 124,5 131,9 182,7 205,9

Water flow 2 l/h 2250 3050 5300 8200 10700 11300 15700 17700

Pressure drops on water side 2 kPa 22 38 26 30 30 36 23 29

Plate exchanger R410A / not aggressive waterNominale water flow 3 l/h 950 1120 2500 3600 5400 5760 6450 8260

Pressure drops 3 kPa 19 19 31 32 33 33 33 33

Accessible plate exchanger with not aggressive water / pool water (standard)Pools nominal water flow 4 l/h 1200 1400 3100 4500 6800 7200 8100 10400

Pressure drops on pools side 4, 5 kPa 32,4 34,0 31,4 33 34,5 34,2 34,7 34,2

Pressure drops on intermediate circuit side 4 kPa 21,2 22,3 20,3 21,6 22,5 22,3 22,7 22,2

Electrical data *Power supply 400 V - 3 ph - 50 Hz

Max. total absorbed current of the sup-ply fan A 3,5 6,2 11,0 14,6 15,0 29,2 41 42

Max. total absorbed current of the exhaust fan A 2,6 4,9 6,4 11,3 11,3 22,0 22,6 30

Max. absorbed current A 11,6 17,1 32,4 49,3 61,3 86,2 99,6 123

Starting current A 32,1 46,1 91,4 181,9 184,3 209,0 223,0 287,0

Dimensions and weightsHeight mm 1765 1765 2245 2405 2405 2085 2405 2405

Width mm 895 895 1055 1375 1695 2015 2175 2335

Lenght mm 3230 3390 4190 4510 4670 5790 5790 6430Weight kg 900 1000 1350 2060 2600 2780 3250 3580

Note: 1 External air 0°C, R.H. 80%; internal air 29°C, R.H 60%. 2 Water temperature inlet/outlet 70/60°C; pressure drops on water side complete with 3-way valve. 3 Not aggressive water temperature inlet/outlet 27/37°C. 4 Water temperature inlet/outlet of the refrigerant circuit 37/27°C; pools water temperature inlet/outlet 25/35°C. 5 Pressure drops do not include the 3-way valve. * Please refer to the wiring diagram inside the unit.

TECHNICAL DATA ARE SUBJECT OF POTENTIAL CHANGES.

The technical data described in the following table are referred to a particular operating cycle (cycle with external air de-humidifi cation) and are not representative of all operating conditions which automatically the electronic regulation of the unit is able to adapt to the halls requirements.



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Operation schemes Alfamini-Alfamax

Here under are the schemes of the main operating modes of the unit (schemes are referred to the Al-famax unit, the operation modes of the Alfamini units are the same

as Alfamax units). In the following schemes please consider that the hot water coil is always operating, as it must refer to external air tem-peratures lower than 10°C with re-

quired supply temperature which has to balance the heat loss of the building.

Exte

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air

This operating mode aims at reducing to zero the ex-ternal air capacity.The total air fl ow is recirculated through the damper n° 5 and re-introduced in the swimming pool.The water reheating coil is operating.The “operating” cycle is activated for the necessary time to reheat the room.

This operating mode aims at dehumidifying the roomwith the external air, by balancing the poof rain evapo-ration. The cooling circuit (composed of compressor n.1 and coils n. 2 and 3) allows to recover the sensible and latent heat of the exhaust air, and transfer it to the inlet air or water by means of the heat exchange system com-posed of the double exchanger on the water side.The hot water coil n. 4 integrates, if necessary, the he-ating capacity supplied by the cooling circuit, housed on the inlet air fl ow (condensing coil n.3).

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Cycle “start-up”

Cycle “dehumidifying”

Dehumidifi cation with outside air (night cycle)

Dehumidifi cation with external air

Dehumidifi cation with outside air and alpha cycle

During the night operation the unit adjusts the fun-ction settings to adapt to the evaporating variations of the pool and reduce the consumptions at minimum.

If convenient, the compressor also contributes to the swimming pool dehumidifying.The fresh air fl ow rate is modulated by the fans inver-ters to reach the required wellness conditions.According to the external ambience temperature theunit adjusts the operation in order to reach the bestenergy savings.

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Cycle with heat transfer to waterIf the air temperature conditions in the ambience are satisfi ed, the heat so rejecked by the cooling circuit will be given to the swimming pool water, by means to a double plate exchanger (standard).A plate exchanger is an essential part of the cooling circuit of the unit (exchanger R410A/water of intermediate cir-cuit, in the following fi gure indicated with n. 1). A further inspectionable exchanger (operating with recirculation water of the intermediate circuit/ swimming pool water, in the following fi gure indicated with n. 2) is supplied together with the unit. The heat system thus constituted is of very easy maintenance.The components and the connections among the exchangers are responsibility of the client.

The scheme is indicative. For simplicity, all the components needed to complete the water circuit are not shown.

Control system

The control system of Alfamini/ Alfamax units is equipped with a 16-bit microprocessor with flash technology and software specifi-cally designed for the control of all functions.The set information, alarms, tim-ing settings and all parameters are displayed on a multi-function control panel with graphic display inside the cabinet.

The control system automatically provides:to implement the cheaper operat-ing cycle and more suited to the room needs;to make the minimum air renewal required by law in force;to manage the initial stages of the heating up system;to implement a reduced function cycle when possible;to switch from air heating opera-tion to water heating operation.

For further information please refer to the control specific man-ual.

Remote panel inside the electrical panel (standard).



Simplified method for units selection

Pool use Use factor

Residential 0,5

Fitness club 0,65

Therapy/Elderly Swim 0,65

Hotel 0,8

Institutional/schools 0,8

Public pools 1,0

SPAs and whirlpools Contact FAST

Table 1 - SPECIFIC EVAPORATION OF THE POOL HALL (g/h for m2 of water surface)

Table 2 - POOL USE

Internal activity g/h each person

A- Seated at rest 50

B- Seated very light work 80

C- Seated, light work 110

D- Walking, standing 130

E- Moderate dancing 280

F- Walking briskly with loads 330

G- Light exercise 450

H- Medium atletic activity 500

I- Athletics 560

Hall temper. (°C)

25 26 27 28 29 30 31

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Relative humidity (%)

50 60 70 50 60 70 50 60 70 50 60 70 50 60 70 50 60 70 50 60 70

Temperature d.b. (°C)

g/h for m2 of water surface

26 218 169 120 247 198 149 277 228 179 309 261 212 343 295 246 379 330 281 417 368 319

27 203 151 99 232 180 128 262 211 159 295 243 191 328 277 225 364 313 261 402 351 298

28 188 133 77 216 161 106 247 192 136 279 224 169 313 258 203 349 294 239 387 332 276

29 200 142 83 230 172 113 263 204 145 297 238 179 333 274 215 370 312 253

28 213 151 89 245 183 121 279 217 155 315 253 191 353 291 229

31 227 161 95 261 195 129 297 231 165 335 269 203

32 242 172 102 278 208 138 316 246 176

33 258 184 109 296 222 147

Table 3 - ACTIVITY COEFFICIENT

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DEHUMIDIFYING POWER OF THE EXTERNAL AIR (g/h for mc/h of external inlet air flow in the room)



The use of tables and diagrams before described, allow to get the required air flow (and therefore to the Alfamini/Alfamax size) necessary for the room dehumidification function. It is a simplified selection method: for further information please contact our technuical/sales department.

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2531°C-50UR%

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Internal room conditions:IMPORTANT COMMENT:The Alfamini-Alfamax units, in the execution described in this technical manual, are not able to cool the room, therefore in these diagrams the allowed temperature index is equal or inferior to the internal room tempera-ture.

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EXTERNAL TEMPERAT. INDEX -10 -5 0 5 10 15 20 25 26 27 28 29 30 31 32 33

External temp. d.b. (°C) -10 -5 0 5 10 15 20 25 26 27 28 29 30 31 32 33

External relative humidity (%) 90 85 80 75 70 65 60 55 54 53 52 51 50 49 48 47

It will be introduced now the external index temperature which represent the different temperature/humidity combina-tions of the external air reported in the following table:

Selection example:

1- Given for example a tank with a surface of 100 m2;

2- Assuming that the water temperature is equal to 27 °C; the indoor air conditions are equal to 29 °C, 60% RH.

With these first data from table 1, we can define that the evaporation is equal to 172 g / hour per square meter of water surface.

3- Supposing that swimming pool is used for residential purposes. The use factor, derivable from table 2, is equal to 0,5.

Therefore the total humidity generated from water surface (g/h) is given from (tank surface x specific evaporation x use factor):

100 m2 x 172 g/h m2 x 0,5 = 8.600 g/h

4- Assuming now that inside the hall are 17 people doing “light exercise”. From table 3 we can define that generated



humidity is equal to 450 g/h each person.

Therefore, the total generated humidity (g/h) is given by (number of persons x specific evaporation):

17 persons x 450 g/h person = 7.650 g/h

The total humidity is obtained from the sum of the humidity produced by the evaporation of the water surface with that generated by people:

8.600 g/h + 7.650 g/h = 16.250 g/h = 16,25 kg/h

5- Now considering, for example, an outdoor temperature index (which represents the project condition/ operating limit for the Alfamini/Alfamax selected units) equal to 26 (i.e. outside air at a temperature of 26 °C with 54% RH) and tempera-ture/ humidity temperature inside the room of 29 °C with 60% RH: from graphs we obtain an eliminated humidity value of 4.1 g/h for m/h of fresh air into the hall.

6- The outside air flow required to compensate the evaporation produced by the water surface and people is obtained from the ratio between total humidity and the dehumidifying power of the external air:

16.250 g/h : 4,1 g/h mc/h = 3.960 mc/h

Therefore from the table of nominal technical data, the selected unit according to the flow appears to be the Alfamini 040 with a nominal air flow of 4,000 cubic meters/h.____________________

According to the difference between the external temperature index and the room internal conditions, the size of the selected unit can vary a lot. Considering in the same example above that the external index now is 20 and not 26, from graph we can get the value of humidity removed is 7 g/h for m/h of fresh air into the room. And therefore the external air flow is:

16.250 g/h : 7 g/h mc/h = 2.320 mc/h

From the table of the nominal technical data the unit to be selected is therefore the Alfamini 025 with nominal air flow di 2.500 mc/h.

Operating limits

The external temperature index, per il quale the Alfamini-Alfamax unit has been selected, represents the operat-ing limit (referred to the external con-ditions) over that the unit is not able to keep the humidity control in the room. Beyond this limit, if the inter-nal vapore production is constant, the relative controlled humidity will devi-ate towards higher values.

Referring to the before example (external temperature index equal to 26), the side graph represents the indicative trend and not binding: - of the external air inlet in the room (continuous line) in relation to the total air derived from the unit;- of the internal room humidity deriv-ing from unit operation (dotted line).

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Um Rel Locale UR_1-11 Portata Nominale di 6800

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Indicative trend of the external air flow

Indicative trend of the internal humidity



Unit performances

Room temperature (°C)

Room relative humidity

(%)


External temperature (°C)

External relative humidity

(%)

External air flow compared to the total air flow (%)

29 60

-10 -10 90 38

-5 -5 85 40

0 0 80 43

5 5 75 48

10 10 70 55

15 15 65 66

20 20 60 85

25 25 55 100

The performances of the unit which can be obtained from the tables are the following:- eliminated room humidity - recuperators performance (efficiency and recovered power)

- refrigerant circuit performance (heating capacity of the condensing coil and compressors absorbed power)- performance of the hot water coil (heating capacity, water flow and pres-sure drops on water side).

The heating capacities of the water coils are referred to the refrigerant circuit not operating (max. capacity).Unit performances refer to the condi-tions reported in the A table.

Table A - GENERAL COUNT CONDITIONS OF THE PERFORMANCES

ALFAMINI 025 PERFORMANCES

Exte

rnal

te

mpe

ratu

re in

dex

Nom

inal

air

flo

w

(mc/

h)

Elim

inat

ed h

umid

ity

(k

g/h)

Recu

pera

tors

eff

icie

ncy

(%)

Reco

vere

d ca

paci

ty

from

re

cupe

rato

r (k

W)

Hea

ting

cap

acit

y of

the

co

nden

sing

coi

l (kW

)

Reco

vere

d ca

paci

ty

from

com

pres

sor

(kW

)

Max

. he

atin

g ca

paci

ty

of t

he w

ater

coi

l(kW

)

Wat

er f

low

(l/

h)

Pres

sure

dro

ps

on w

ater

sid

e (k

Pa)

Max

. he

atin

g ca

paci

ty

of t

he w

ater

coi

l (kW

)

Wat

er f

low

(l/

h)

Pres

sure

dro

ps

on w

ater

sid

e (k

Pa)

Water IN-OUT: 70-60 °C Water IN-OUT: 50-45 °C

-10

2500

15,5 80,8 10,2 6,7 1,2 26,1 2250 22 14 2400 27

-5 15,5 79,4 9,0 7,1 1,3 26,1 2250 22 14 2400 27

0 15,5 76,9 7,9 7,5 1,3 26,1 2250 22 14 2400 27

5 15,5 74,6 7,0 8,1 1,3 26,1 2250 22 14 2400 27

10 15,5 70,8 6,0 8,6 1,3 26,1 2250 22 14 2400 27

15 15,5 65,7 4,9 9,2 1,4 26,1 2250 22 14 2400 27

20 15,5 61,2 3,9 9,8 1,5 26,1 2250 22 14 2400 27

25 14,5 60,6 2,0 - - 26,1 2250 22 14 2400 27




Exte

rnal

te

mpe

ratu

re in

dex

Nom

inal

air

flo

w

(mc/

h)

Elim

inat

ed h

umid

ity

(k

g/h)

Recu

pera

tors

eff

icie

ncy

(%)

Reco

vere

d ca

paci

ty

from

re

cupe

rato

r (k

W)

Hea

ting

cap

acit

y of

the

co

nden

sing

coi

l (kW

)

Reco

vere

d ca

paci

ty

from

com

pres

sor

(kW

)

Max

. he

atin

g ca

paci

ty

of t

he w

ater

coi

l(kW

)

Wat

er f

low

(l/

h)

Pres

sure

dro

ps

on w

ater

sid

e (k

Pa)

Max

. he

atin

g ca

paci

ty

of t

he w

ater

coi

l (kW

)

Wat

er f

low

(l/

h)

Pres

sure

dro

ps

on w

ater

sid

e (k

Pa)

Water IN-OUT: 70-60 °C Water IN-OUT: 50-45 °C

-10

4000

25,2 79,3 16,3 9,5 1,6 35,4 3050 38 19 3370 47

-5 25,2 77,9 14,3 9,9 1,6 35,4 3050 38 19 3370 47

0 25,2 75,8 12,6 10,5 1,6 35,4 3050 38 19 3370 47

5 25,2 72,8 11,0 11,0 1,6 35,4 3050 38 19 3370 47

10 25,2 68,9 9,5 11,6 1,6 35,4 3050 38 19 3370 47

15 25,2 63,9 7,8 12,1 1,6 35,4 3050 38 19 3370 47

20 25,2 59,6 6,1 12,6 1,6 35,4 3050 38 19 3370 47

25 23,6 59,0 3,2 - - 35,4 3050 38 19 3370 47


Exte

rnal

te

mpe

ratu

re in

dex

Nom

inal

air

flo

w

(mc/

h)

Elim

inat

ed h

umid

ity

(k

g/h)

Recu

pera

tors

eff

icie

ncy

(%)

Reco

vere

d ca

paci

ty

from

re

cupe

rato

r (k

W)

Hea

ting

cap

acit

y of

the

co

nden

sing

coi

l (kW

)

Reco

vere

d ca

paci

ty

from

com

pres

sor

(kW

)

Max

. he

atin

g ca

paci

ty

of t

he w

ater

coi

l(kW

)

Wat

er f

low

(l/

h)

Pres

sure

dro

ps

on w

ater

sid

e (k

Pa)

Max

. he

atin

g ca

paci

ty

of t

he w

ater

coi

l (kW

)

Wat

er f

low

(l/

h)

Pres

sure

dro

ps

on w

ater

sid

e (k

Pa)

Water IN-OUT: 70-60 °C water IN-OUT: 50-45 °C

-10

6.300

39,9 80,3 25,5 19,0 3,6 61,6 5300 26 34 5800 32

-5 39,9 78,6 23,1 20,1 3,7 61,6 5300 26 34 5800 32

0 39,9 76,8 20,7 21,4 3,7 61,6 5300 26 34 5800 32

5 39,9 73,6 18,2 22,8 3,8 61,6 5300 26 34 5800 32

10 39,9 70,2 15,7 24,2 3,8 61,6 5300 26 34 5800 32

15 39,9 65,3 12,9 25,8 3,9 61,6 5300 26 34 5800 32

20 39,9 60,2 10,0 27,5 4,0 61,6 5300 26 34 5800 32

25 37,3 59,2 5,0 - - 61,6 5300 26 34 5800 32




Exte

rnal

te

mpe

ratu

re in

dex

Nom

inal

air

flo

w

(mc/

h)

Elim

inat

ed h

umid

ity

(k

g/h)

Recu

pera

tors

eff

icie

ncy

(%)

Reco

vere

d ca

paci

ty

from

re

cupe

rato

r (k

W)

Hea

ting

cap

acit

y of

the

co

nden

sing

coi

l (kW

)

Reco

vere

d ca

paci

ty

from

com

pres

sor

(kW

)

Max

. he

atin

g ca

paci

ty

of t

he w

ater

coi

l(kW

)

Wat

er f

low

(l/

h)

Pres

sure

dro

ps

on w

ater

sid

e (k

Pa)

Max

. he

atin

g ca

paci

ty

of t

he w

ater

coi

l (kW

)

Wat

er f

low

(l/

h)

Pres

sure

dro

ps

on w

ater

sid

e (k

Pa)

water IN-OUT: 70-60 °C water IN-OUT: 50-45 °C

-10

10.000

63,7 79,5 41,2 28,3 5,7 95,3 8200 30 52 9000 37

-5 63,7 77,7 36,1 29,9 5,8 95,3 8200 30 52 9000 37

0 63,7 76,0 32,0 31,7 6,0 95,3 8200 30 52 9000 37

5 63,7 72,9 27,9 33,6 6,1 95,3 8200 30 52 9000 37

10 63,7 69,5 24,1 35,8 6,2 95,3 8200 30 52 9000 37

15 63,7 64,6 19,9 38,1 6,3 95,3 8200 30 52 9000 37

20 63,7 59,5 15,4 40,5 6,5 95,3 8200 30 52 9000 37

25 59,6 58,4 7,8 - - 95,3 8200 30 52 9000 37


Exte

rnal

te

mpe

ratu

re in

dex

Nom

inal

air

flo

w

(mc/

h)

Elim

inat

ed h

umid

ity

(k

g/h)

Recu

pera

tors

eff

icie

ncy

(%)

Reco

vere

d ca

paci

ty

from

re

cupe

rato

r (k

W)

Hea

ting

cap

acit

y of

the

co

nden

sing

coi

l (kW

)

Reco

vere

d ca

paci

ty

from

com

pres

sor

(kW

)

Max

. he

atin

g ca

paci

ty

of t

he w

ater

coi

l(kW

)

Wat

er f

low

(l/

h)

Pres

sure

dro

ps

on w

ater

sid

e (k

Pa)

Max

. he

atin

g ca

paci

ty

of t

he w

ater

coi

l (kW

)

Wat

er f

low

(l/

h)

Pres

sure

dro

ps

on w

ater

sid

e (k

Pa)

Water IN-OUT: 70-60 °C water IN-OUT: 50-45 °C

-10

13.000

82,7 79,4 53,5 41,1 8,2 124,5 10700 30 68 11800 37

-5 82,7 78,3 47,2 43,2 8,3 124,5 10700 30 68 11800 37

0 82,7 76,0 41,5 45,7 8,4 124,5 10700 30 68 11800 37

5 82,7 72,8 36,2 48,7 8,6 124,5 10700 30 68 11800 37

10 82,7 69,4 31,3 51,7 8,7 124,5 10700 30 68 11800 37

15 82,7 64,5 25,8 55,3 8,9 124,5 10700 30 68 11800 37

20 82,7 59,4 19,9 59,1 9,2 124,5 10700 30 68 11800 37

25 77,3 58,4 10,2 - - 124,5 10700 30 68 11800 37



ALFAMAX 160 PERFORMANCESEx

tern

al

tem

pera

ture

inde

x

Nom

inal

air

flo

w

(mc/

h)

Elim

inat

ed h

umid

ity

(k

g/h)

Recu

pera

tors

eff

icie

ncy

(%)

Reco

vere

d ca

paci

ty

from

re

cupe

rato

r (k

W)

Hea

ting

cap

acit

y of

the

co

nden

sing

coi

l (kW

)

Reco

vere

d ca

paci

ty

from

com

pres

sor

(kW

)

Max

. he

atin

g ca

paci

ty

of t

he w

ater

coi

l(kW

)

Wat

er f

low

(l/

h)

Pres

sure

dro

ps

on w

ater

sid

e (k

Pa)

Max

. he

atin

g ca

paci

ty

of t

he w

ater

coi

l (kW

)

Wat

er f

low

(l/

h)

Pres

sure

dro

ps

on w

ater

sid

e (k

Pa)


-10

16.000

102,2 92,9 77,3 40,9 8,3 131,9 11300 36 71 12300 42

-5 102,2 91,0 67,7 43,4 8,4 131,9 11300 36 71 12300 42

0 102,2 88,3 59,6 46,3 8,5 131,9 11300 36 71 12300 42

5 102,2 84,1 51,7 49,7 8,6 131,9 11300 36 71 12300 42

10 102,2 77,6 43,2 53,5 8,7 131,9 11300 36 71 12300 42

15 102,2 66,5 32,9 57,6 8,8 131,9 11300 36 71 12300 42

20 102,2 63,5 26,3 61,0 9,0 131,9 11300 36 71 12300 42

25 95,6 62,6 13,4 - - 131,9 11300 36 71 12300 42

ALFAMAX 200 PERFORMANCES

Exte

rnal

te

mpe

ratu

re in

dex

Nom

inal

air

flo

w

(mc/

h)

Elim

inat

ed h

umid

ity

(k

g/h)

Recu

pera

tors

eff

icie

ncy

(%)

Reco

vere

d ca

paci

ty

from

re

cupe

rato

r (k

W)

Hea

ting

cap

acit

y of

the

co

nden

sing

coi

l (kW

)

Reco

vere

d ca

paci

ty

from

com

pres

sor

(kW

)

Max

. he

atin

g ca

paci

ty

of t

he w

ater

coi

l(kW

)

Wat

er f

low

(l/

h)

Pres

sure

dro

ps

on w

ater

sid

e (k

Pa)

Max

. he

atin

g ca

paci

ty

of t

he w

ater

coi

l (kW

)

Wat

er f

low

(l/

h)

Pres

sure

dro

ps

on w

ater

sid

e (k

Pa)


-10

20.000

127,6 86,1 89,5 47,5 9,1 182,7 15700 23 98 16700 29

-5 127,6 84,2 78,3 50,3 9,2 182,7 15700 23 98 16700 29

0 127,6 81,3 68,6 53,6 9,2 182,7 15700 23 98 16700 29

5 127,6 75,9 58,8 57,2 9,3 182,7 15700 23 98 16700 29

10 127,6 70,4 49,0 61,1 9,3 182,7 15700 23 98 16700 29

15 127,6 60,5 37,3 65,2 9,3 182,7 15700 23 98 16700 29

20 127,6 58,8 30,4 68,8 9,5 182,7 15700 23 98 16700 29

25 119,3 57,8 15,5 - - 182,7 15700 23 98 16700 29



ALFAMAX 250 PERFORMANCESEx

tern

al

tem

pera

ture

inde

x

Nom

inal

air

flo

w

(mc/

h)

Elim

inat

ed h

umid

ity

(k

g/h)

Recu

pera

tors

eff

icie

ncy

(%)

Reco

vere

d ca

paci

ty

from

re

cupe

rato

r (k

W)

Hea

ting

cap

acit

y of

the

co

nden

sing

coi

l (kW

)

Reco

vere

d ca

paci

ty

from

com

pres

sor

(kW

)

Max

. he

atin

g ca

paci

ty

of t

he w

ater

coi

l(kW

)

Wat

er f

low

(l/

h)

Pres

sure

dro

ps

on w

ater

sid

e (k

Pa)

Max

. he

atin

g ca

paci

ty

of t

he w

ater

coi

l (kW

)

Wat

er f

low

(l/

h)

Pres

sure

dro

ps

on w

ater

sid

e (k

Pa)


-10

25.000

159,5 89,2 115,9 61,8 12,5 205,9 17700 29 110 18600 36

-5 159,5 87,4 101,5 65,3 12,7 205,9 17700 29 110 18600 36

0 159,5 84,6 89,2 69,4 12,8 205,9 17700 29 110 18600 36

5 159,5 79,4 81,1 75,3 12,9 205,9 17700 29 110 18600 36

10 159,5 75,1 69,6 77,7 12,9 205,9 17700 29 110 18600 36

15 159,5 67,1 54,6 79,1 13,0 205,9 17700 29 110 18600 36

20 159,5 61,7 43,0 79,7 13,0 205,9 17700 29 110 18600 36

25 149,1 60,4 27,8 - - 205,9 17700 29 110 18600 36



Accessible plate exchanger (standard)

Alfamini 025

Alfamini 040

Alfamini 060

Alfamini 100

Alfamini 130

Alfamax 160

Alfamax 200

Alfamax 250

P (mm) 29 33 68 95 139 148 165 222

Q (mm) 175 175 350 350 350 350 350 350

W (mm) 300 300 300 300 500 500 500 500

weight (kg) 56 56 63 67 74 75 78 88

The accessible plate exchanger is supplied alongside the unit. For the hydraulic connection and for the R410A/water exchanger (inside unit) please refer to the proper paragraph.

Technical characteristics: Plate material: Inox steel AISI 316.Plate material for the frame: steel, epoxi paint.Gaskets by nitrile joint.



Hydraulic schemes for connections

The following is an example of a con-nection between the water/R410A exchanger (G in the picture, inside the unit) and the water/accessible water

exchanger (A in the picture and sup-plied loose). The lack or the not proper location of the mentioned components could

affect the standard operation of the unit.

ALFAMINI

ALFAMAX

A

B

C

D E D

F

G

L

I

O

°Cp

W

W

W

N

M

A Water/accessible water exchanger(supplied loose)

B Differential flowswitch with digital contact

C Digital thermostat di consenso for the heat recovery to water

D Shut-off valve

E Recirculation pump

F Expansion vessel

G Water/ R410A exchanger(inside Alfamini/Alfamax units)

I Y filter

L Automatic filling group

M Filter for pools water

N Chlorine system

O Main heat production system

W Water flow

Standard components

ATTENTION: THE CHLORINE INSTALLATION MUST BE PLACED AFTER THE EXCHANGER (A)

Components and indicative location

The thermostat (C) is used to detect the water temperature of the inter-mediate circuit and activate, even when the flow switch (B) gives its consent, the heat transfer to water. The set value of the thermostat is helpful to ensure that the water temperature at the water/R410A exchanger inlet does not exceed 27 °C.

Below this value, the heat transfer cycle to water is not able to activate.The differential flow switch (B) is used to detect the presence of water flow in the heat exchanger (G).The recirculation pump (E) must work only in case the water flow is present (W). Otherwise it must be off.

The heat transfer to the water cycle represents an alternative to the sup-ply air heating.If the set air conditions in the room are satisfied and the consent to the heat transfer to water is not active, the compressor of the refrigerant cir-cuit will turn off.



Unit dimensions

NB. Dimensions are subject to poten-tialchanges due to the natural evolu-tion of the product and are therefore not considered as binding.

ALFAMINI 025

10552175

37,5770770157,51765

3230

760

770 37,5770157,5

62,5770

62,567,5

67,5

120

LATO

ATTA

CC

HI E ISPEZIO

NI

37,543060610627,5

CO

NN

ECTIO

NS/IN

SPECTIO

NS SID

E



NB. Dimensions are subject to potential-changes due to the natural evolution of the product and are therefore not con-sidered as binding.

ALFAMINI 040

12152175

37,5770770157,5

1765

760

43060610470157,5

770 37,5770157,5

62,5700

62,567,5

67,5

LATO

ATTA

CC

HI E

ISP

EZIO

NI

895353

Quadro elettricoruotante

3390120

CO

NN

ECTIO

NS/IN

SPECTIO

NS SID

E



NB. Dimensions are subject to potential-changes due to the natural evolution of the product and are therefore not con-sidered as binding.

ALFAMINI 060 1055

57,5940

57,537,561060750787,5

62,5930

62,5

37,593030

1055356

14111535

4190

120 2125

2245

LATO

ATTA

CC

HI E

ISP

EZIO

NI

2655120

1090157,5

Quadro elettricoruotante

CO

NN

ECTIO

NS/IN

SPECTIO

NS SID

E



NB. Dimensions are subject to potentialchanges due to the natu-ral evolution of the product and are therefore not considered as binding.

ALFAMINI 100

2285120

15352655

1204190

62,51250

62,5

37,5

72,51240

62,5

37,577060750787,5

1375356

1090301090157,5

LATO

ATTA

CC

HI E

ISP

EZIO

NI

CO

NN

ECTIO

NS/IN

SPECTIO

NS SID

E




ALFAMINI 130

54,34615

120 22852405

1695356

10901090

15701560

770750

20152655

2051

CO

NN

ECTIO

NS/IN

SPECTIO

NS SID

E




ALFAMAX 160

LATO ATTACCHI E ISPEZIO

NI

18553935

120 19652085

62,5770

190930

62,5

37,51890157,5

37.51890157,5

1880160,5780

180940

2015

5790

CO

NN

ECTIO

NS/IN

SPECTIO

NS SID

E




ALFAMAX 200

940190

940

167,5 2200

62,5930

190930

62,52175

157,5 2210 37,5

18553937

116120 2285

24052175

5790

37,5

52,552,5

CO

NN

ECTIO

NS/IN

SPECTIO

NS SID

E




ALFAMAX 250 940190

1100

167,5 2200

62,51090

190930

62,52335

157,5 2210 37,5

2495120 2285

24052335

6430

37,5

52,552,5

3935120

CO

NN

ECTIO

NS/IN

SPECTIO

NS SID

E

FAST S.p.A. TRATTAMENTO DELL'ARIA35044 Montagnana (PD) - ItalyVia Luppia Alberi, 170Tel. (+39) 0429 806311 - Fax 0429 806340E-mail: [email protected]://www.fastaer.com

Technical data shown in this booklet are not binding.FAST S.p.A. shall have the right to introduce at any time whatevermodifi cations deemed necessary to the improvement of theproduct.

Manual printed on recycled paper.

1012

-618

0971

-rev

.02

Documents

Alfamini-Alfamax Manuale Tecnico UK 6180971 02 · 2016. 9. 16. · Alfamini-Alfamax series Trattamento dell’aria High efﬁ ciency air handling unit for wellness areas Air ﬂ ow