Lengths: 1 and 1.7 metres Thermozone AC 400/WAC 400 · AC412 0/ /12 1350/2700 27/13 44/62 230V~/2.5A 400V3~/17.3A1000 54 AC418 0/ /18 2250/4500 27/13 45/63 230V~/4.2A 400V3~/26.0A1670

94

THERMOZONE AC 400/ WAC 400

Frico AB, Box 102, SE-433 22 Partille � Tel: +46 31-336 86 00 � Fax: +46 31-26 28 60 � [email protected] � www.frico.seDesign and specifications are subject to change without notice.

0.0 m

1.0 m

2.0 m

3.0 m

4.0 m

5.0 m

12.2 m/s

8.0 m/s

4.9 m/s

4.0 m/s

3.6 m/s

3.2 m/s

AC 400/WAC400

Thermozone® AC 400/WAC 400

Ambient, no heat

Hot water heat

Electrical heat 12�18 kW

Lengths: 1 and 1.7 metres

� Corrosion proof housing made of hot zinc-plate andpowder enamelled steel panels. Colour: RAL 9016

� Compact design requires minimum headroom.� The unit may be tilted to achieve an optimum air

stream angle� The connection areas are easy accessed through a

large service hatch� The sound-absorbing front plate can be turned to

allow air intake either from above or from below� The narrow outlet that gives a high impuls, is

angled 10o outwards for optimum performance

Approved by SEMKO and CE compliant

Air velocity profile

The Thermozone 400 series includes the AC modelswith and without heat, and the hot water heated WACmodels.

AC/WAC 400 are intented for permanent installa-tion above doorways with heigths of between 3 and4.5 meters. By separating zones of different tempera-ture with a jet of air, the AC/WAC400 effectivelyprevents cold draught in open doorways and prov-ides good heating comfort and the opportunity tomake use of the floor space close to the opening.Significantly reduced energy loss gives large savings.

AC400 without heat is specifically designed toprevent loss of cold air through cold room openingsand from shops.

When space above the doorway is limited, theunits can be mounted standing beside the opening,thus creating a sideblowing air stream. They can alsobe mounted in false ceilings.

In wide doorways, several units can be mountednext to each other and regulated with a commonthermostat and control panel. Three different lenghtsmakes it possible to cover openings of differentwidths. When mounting above openings with ceiling-mounted sliding doors, adaptation sets are availablethat position the outgoing air stream close to theopening.

AIR CURTAINS FOR DOORWAYS 3 AND 4.5 METRES

95



Hotel Sheraton inStockholm, with 459rooms and 11 suites,is situated only astones-throw from theCentral Station. It is ahigh-class hotel,where the guestsexpect comfort andgood service. Withtwo powerful AC400s,the entrance iscomfortable and freeof draught, and fumes.Dust and insects arealso kept out.

Thermozone AC/WAC400 provides a highly efficient linearair flow barrier. Doors may be left open for long periodsgiving clear, uninterrupted vision and unlimited mobility forpeople and vehicles.

There are AXT401/402 adaptation sets available foropenings with ceiling-mounted sliding doors. With AXT, theoutgoing air stream is positioned as close to the opening aspossible.

The Swedish food stores chain ICA invests in energy savingand air quality. At this store entrance, two AC400s havebeen installed in a vertical position on either side of theentrance to protect the store from fumes and cold air, comingin from the multi-story car park.

The do-it-yourseft store K-rauta saves energy with twoWAC400. The blue shade is the K-rauta´s own colour. If youhave special needs concerning design, positioning orinstallation, please contact the Frico Key Account Team.

96



1000 / 1665

975 / 1640 770

360

Thermozone AC 400

360

710

400490

1 1

22

1 alt. 2

335

ø 11

ø 20

Thermozone AC 400 without heat

Type Output stages Air flow Sound level Voltage Amperage Length Weight[kW] [dB(A)] [V] [A] [mm] [kg]

AC401 0/ 1350/2700 44/62 230V~ 2.5 1000 4 4

AC402 0/ 2250/4500 45/63 230V~ 4.2 1670 7 1

Protection class AC400 without heat: (IP24), splash-proof design.

Thermozone AC 400 with electrical heating

Type Output staging Air flow Dt*1 Sound level Voltage[V] Voltage(V) Length Weight[kW] [m3/h] [°C] [dB(A)] Amperage[A] Amperage[A] [mm] [kg]

(control) (heat)

AC412 0/ /12 1350/2700 27/13 44/62 230V~/2.5A 400V3~/17.3A 1000 5 4

AC418 0/ /18 2250/4500 27/13 45/63 230V~/4.2A 400V3~/26.0A 1670 8 6

*1) ∆t = temperature rise of passing air at maximum heat output and lowest/highest air flow.

Protection class AC400 with electrical heating: (IP24), splash-proof design.

Thermozone WAC 400 with hot water heating

Type Air flow Water volume Sound level Voltage Amperage Length Weight[m3/h] [l] [dB(A)] [V] [A] [mm] [kg]

WAC401 1050/2400 2.5 44/62 230V~ 2.5 1000 5 2

WAC402 1800/4000 3.5 45/63 230V~ 4.2 1670 8 3

WAC401V 1050/2400 2.5 44/62 230V~ 2.5 1000 5 2

WAC402V 1800/4000 3.5 45/63 230V~ 4.2 1670 8 3

For vertical mounting: WAC401V and WAC402VProtection class WAC400 with hot water heating: (IP24), splash-proof design.For information on heat output, see output charts on page 103.

TECHNICAL SPECIFICATIONS

DIMENSIONS

97



POSITIONING, MOUNTING AND INSTALLATION

Mounting at the side of the openingWhen space above the doorway is limited, modelsWAC401V and WAC402V can be mounted standingbeside the opening, creating a horizontal air stream.Mounting plates AVMP300 are mounted betweenunits and between the lowest unit and the floor. Forminimum mounting distance to doorway, see sketchnr 1 for the electrically heated models.

For maximum performance the units should coverthe whole width of the opening and be fitted as closeto the opening as possible. Several units can bemounted next to each other to form a continuous aircurtain. Maximum building height for vertical unitswithout structural support is 3.5 metres.

Mounting above the openingWith the supplied mounting brackets, ThermozoneAC/WAC400 units may be fitted in several ways: onthe wall, on the ceiling, attached to cables, etc. Thebrackets also allow the units to be tilted in order toachieve an optimum air stream angle.

They can also be mounted in false ceilings, flushwith the ceiling or with only the intake and dischargegrilles visible. Among the hot water heated models,WAC401 and WAC402 are mounted in a horizontalpostion above the opening. For minimum mountingdistance to the doorway see sketch nr 1 for theelectrically heated models. When mounting in falseceilings see sketch nr 2. The units must not bemounted directly below a power point.

For maximum performance the units should coverthe whole width of the opening and be fitted as closeto the opening as possible. Several units can bemounted next to each other to form a continuous aircurtain.

Mounting below ceiling-mounted sliding doorsWhen mounting above openings with ceiling-mounted sliding doors, a square-shaped air curtainunit cannot be positioned close enough to theopening because of the door track. The adaptationset AXT401/402 is dome-shaped and may therefore bepositioned up against the door with the outgoing airstream very close to the opening. When mountingbelow ceiling-mounted sliding doors wires (or similar)for suspension are needed.

98



min 200

770

Thermozone AC 400

35 30 1070

1120

945

Connection AC 400 The appliance should be preceded by a triple poleswitch with at least 3 mm breaking gap. Theconnection should be made with a cable type S05VV-U, A05VV-R or similar, through knock outs on the topside of the unit (2 x ø38 mm and 3 x ø29 mm). Forconnection to the supply terminal block, a cable ofmaximum 16 mm2 is used. For connection to thecontrol terminal block, a cable of maximum 6 mm2 isused. For units with electrical heating, power andvoltage should be supplied in different connectionareas. See wiring diagrams on page 106-107.

Connection WAC 400 The appliance should be preceded by a triple poleswitch with at least 3 mm breaking gap. Theconnection should be made with a cable type S05VV-U, A05VV-R or similar, through ø29 mm knock outs onthe top side of the unit. Connections (DN20 (3/4�),inside thread) to the water heating coil are located onthe top of the unit. See sketch 3 and wiring diagramson page 108-109. The supplied 0.8 meter flexiblehoses, allow the unit to be tilted.

Sketch 2: Mounting in false ceiling

Sketch 3: WAC400, water connection on the top side to theright

Sketch 1: Minimum distance to wall 300mm

Sketch 4: Adaptation set AXT401/402.

99



REGULATION ALTERNATIVES

ACCESSORIES

Air curtains without heat Fan speed regulationWhen the gate opens and closes, the position limitswitch signals on and off. When on, the fan speed isregulated with a suitable fan speed regulator.

Complete regulation kit:� AGB304, position limit switch� ACR304, 4-stage regulator or

ACR3042, 4-stage regulator high/low speed orACR3042T1, 4-stage regulator high/low speedwith time relay or2221AG, variable fan speed regulator

Air curtains with electrical heating Fan speed and thermostat regulation with positionlimit switchWhen the gate opens and closes, the position limitswitch signals on and off. When on, the fan speed isregulated with a suitable fan speed regulator. The2-stage room thermostat controls the heat supply intwo stages (0, 1/2, 1/1). The output may be manuallycontrolled with an output selector.


ACR3042, 4-stage regulator high/low speed or

KRT2800, 2-stage thermostat Regulates the heat. Adjustable temperature differencebetween the stages (1� 4°C). Setting range 0�40°C.For electrically heated units (AC412, AC418).Protection class: jet-proof design (IP55).

KRT1900, capillary tube thermostat Opens/closes water valves and starts/stops watervalves. A thermostat with alternating relay for controlof heat and fans. For hot water heated units.(WAC401, WAC402, WAC401V, WAC402V).Protection class: jet-proof design (IP55).

KRT1900/2800 RTE102

RTI2, electronic 2-stage thermostat Regulates the heat. Adjustable temperature differencebetween the stages (1� 10°C). Setting range 5�35°C.For electrically heated units (AC412, AC418).Protection class: splash-proof design (IP44).

RTE102, electronic thermostat Opens/closes and starts/stops water valves. Internaltemperature setting 7�35°C. Delivered with coveringframe. Used with hot water heated units (WAC401,WAC402, WAC401V, WAC402V). Protection class:normal design (IP30).

For further alternatives: see section on Thermostats.

RTI2

ACR3042T1, 4-stage regulator high/low speedwith time relay orFRE6, digital variable fan speed regulator

� KRT2800, 2-stage thermostat orRTI2, electronic 2-stage thermostat.

� EV300, output selector

Air curtains with hot water heating Fan speed and thermostat regulation with positionlimit switchWhen the gate opens and closes, the position limitswitch signals on and off. When on, the fan speed isregulated with a suitable fan speed regulator. Theheat supply is controlled by thermostat and by a setof valves. The output may be manually controlledwith an output selector.


ACR3042, 4-stage regulator high/low speed orACR3042T1, 4-stage regulator high/low speedwith time relay or2221AG, variable fan speed regulator orFRE6, digital variable fan speed regulator

� KRT1900, capillary tube thermostat orRTE102, electronic thermostat

� VR20/25, valve set orTVV20/25, valve and SD20, actuator

100



AGB304, position limit switchA position limit switch is commonly used to start/stopthe air curtain on opening and closing the door.

ACR304, 4-stage regulator With ACR304, the fan speed can be adjusted in 4stages to achieve optimal performance and protectionat different door heights. The fan is turned off whenthe door closes. The regulator controls a maximum of5�7 units. Max input 14 A. Protection class: splash-proof design (IP 44).

ACR3042, 4-stage regulator high/low speed With ACR3042, the fan speed can be adjusted in 4stages to achieve optimal performance and protectionat different door heights. One speed is selected forwhen the gate is open and a lower speed is selectedfor when the gate is closed. The regulator controls amaximum of 5�7 units. Max input 14 A. Protectionclass: splash-proof design (IP 44).

ACR3042T1, 4-stage regulator

high/low speed with time relay With ACR3042T1, the fan speed can be adjusted in 4stages to achieve optimal performance and protectionat different door heights. One speed is selected forwhen the gate is open and a lower speed is selectedfor when the gate is closed. ACR3042T1 is equippedwith a times relay. When the gate is closed, the fanwill remain at the selected speed for a desired period.This function is particularly useful when a gate isfrequently opened and closed. The regulator controlsa maximum of 5�7 units. Max input 14A. Protectionclass: splash-proof design (IP 44).

2221AG, variable fan speed regulator Single-phase thyristor for variable fan speed controland for switching off and on. Designed for surfacemounting. Fits in rectangular mounting case. Theregulator controls a maximum of 2�3 units. Max input5 A. It regulates hot water heated units (WAC401,WAC402, WAC401V, WAC402V) and units withoutheat (AC401, AC402). Protection class: splash-proofdesign (IP 44).

FRE6, digital variable fan speed regulator s The FRE6 has two different regulation programs tocontrol the air curtain. The UT-regulation that iscontrolled by the door contact, room thermostat andthe outdoor temperature - and the IT-regulation thatis controlled by the door operation. Regulates amaximum of 1-3 units. Max input 6A. With a supplycurrent above 6A, a slave unit must be used. Itregulates hot water heated units (WAC401, WAC402,WAC402V) and electrically heated units (AC418,AC412). Protection class: jet-proof design (IP54).

EV300, output selector Electrically heated units (AC412, AC418) can becontrolled with the output selector EV300. Outputstages: 0�1/2�1/1. Protection class: splash-proofdesign (IP 44).

AGB304 ACR304 2221AG FRE6ACR3042 / ACR3042T1 EV300

101



VR 20/25, valve set For regulation of water flow to hot water heatedair curtains.

The valve set consists of the following:� AV20/25, stop valve� JV20/25, adjustment valve� TRV20/25, on/off 3-way motor valve� BPV10, by-pass valve� SD20. actuator on/off

The stop valve (AV20/25) consists of a ball valvewhich is either open or closed. It is used to turn thewater flow off and on. The water flow can be fine-tuned manually with the adjustment valve (JV20/25).It can also be completely turned off. The flow can bemeasured using a pressure port. The kv value forJV20 is 0,13�5,9 and for JV25 0,17� 8,52. The 3-waymotor valve (TRV20/25) consists of a valve motor anda housing. When the TRV20/25 is closed, the flowthrough the by-pass valve is low to ensure presenceof warm water in the heating coil. This leads toinstant heat supply when needed and some degree offrost protection. Actuator SD20 works on/off.

The valve set is available with two different valvedimensions: VR 20 - DN20 (3/4�) and VR 25 - DN25(1�). The by-pass valve dimension is DN10 (3/8�). Toregulate VR20/25, a suitable thermostat has to beadded.

TVV20/25, 2-way regulation valve TVV20 has a pipe dimension of DN20 (3/4�) andTVV25 of DN25 (1�). Pressure class PN16. Maximumpressure 2 MPa (20 bar).Maximum pressure drop TVV20: 100 kPa (0,1 bar)Maximum pressure drop TVV25: 62 kPa (0,062 bar)The kv-value is adjustable in 3 stages:

SD20, actuator on/off 230V~ SD20 regulates the heating. Works on/off. A 5 secondclosing of the valve prevents sudden pressurechanges in the pipe system. IP40.

TVV20/25, 2-way regulation valve and SD20, actuatorprovides a basic form of water regulation, without thepossibility of adjusting or shutting the water flow off.A suitable thermostat is choosen to regulate TVV20/25 and SD20.

Pos. 1 Pos. 2 Pos. 3

TVV20 kv 1,6 kv 2,5 kv 3,5

TVV25 kv 2,5 kv 4,0 kv 5,5

SD20JV20/25 TVV20/25AV20/25

TRV20/25 BPV10

TVV20/25

SD20

KRT, RTE

BPV10

AV20/25

JV20/25

TVR20/25

KRT

VR

20

/25

SD20

230V ~230V ~

C̊ C̊

Thermozone AC 400 Thermozone AC 400

102



22003 and 22004, false ceiling grillesThere are false ceiling grilles for air intake anddischarge available for mounting the air curtain infalse ceiling systems. Available in 2 sizes.

AXT401/402, adaptation setWhen mounting above openings with ceiling-mounted sliding doors, adaptation set are availablethat position the outgoing air stream close to theopening.

AVMP300, mounting platesWhen the units are mounted in a standing position atthe side of the door, mounting plates are fittedbetween units and between the lowest unit and thefloor. The mounting plate consists of two parts; theouter one is secured in the floor or at the top of thelower unit; the inner part is mounted on the underside of unit that is standing on the floor.

AXP300, collision protectionAXP300 is mounted on the ground next to a standingair curtain unit to prevent it from being hit by trucks,shopping trolleys etc.

Type Description HxWxD[mm]

KRT2800 2-stage thermostat 165x60x57

KRT1900 Capillary tube thermostat 165x60x57

RTI2 Electronic 2-stage thermostat 150x80x50

RTE102 Electronic thermostat 71x71x28

ABG304 Position limit switch

ACR304 4-stage regulator 100x80x90

ACR3042 4-stage regulator high/low speed 213x155x110

ACR3042T1 4-stage regulator high/low speed with time relay 213x155x110

2221AG Variable fan speed regulator 170x85x63

FRE6 Digital variable fan speed regulator 180x210x110

EV300 Output selector 100x80x90

VR20 Valve set, connection DN20

VR25 Valve set, connection DN25

TVV20 2-way valve, connection DN20

TVV25 2-way valve, connection DN25

SD20 Actuator on/off

22003 False ceiling grille 1192x192

22004 False ceiling grille 1515x192

AVMP300 Mounting plates

AXT401 Adaptation set for ceiling-mounted sliding doors 1000

AXT402 Adaptation set for ceiling-mounteds sliding doors 1670

AXP300 Collision protection

AXT401/402 AVMP300 AXP30022003/22004

103



OUTPUT CHARTS WATER

Incoming / outgoing water temperature 80/60°CIncoming air temp. = +15°C Incoming air temp. = +20°C

Type Fan Air Output Outgoing Water- Output Outgoing. Water-position flow air temp. flow air temp. flow

[m3/h] [kW] [°C] [l/s] [kW] [°C] [l/s]

WAC401 max 2400 32.9 55.4 0.39 29.8 56.6 0.35

m i n 1050 17.9 65.3 0.21 16.3 65.7 0.19

WAC402 max 4000 56.6 56.8 0.67 51.4 57.9 0.61

m i n 1800 31.3 66.2 0.37 28.5 66.7 0.34

WAC401V max 2400 30.0 51.8 0.35 27.1 53.3 0.32

m i n 1050 16.7 61.9 0.19 15.1 62.5 0.18

WAC402V max 4000 49.3 51.3 0.58 44.5 52.8 0.53

m i n 1800 28.1 61.1 0.33 25.5 61.7 0.30



[m3/h] [kW] [°C] [l/s] [kW] [°C] [l/s]

WAC401 max 2400 20.0 39.6 0.23 16.9 40.7 0.20

m i n 1050 11.2 46.4 0.13 9.5 46.7 0.11

WAC402 max 4000 35.0 40.8 0.41 29.6 41.8 0.35

m i n 1800 19.8 47.4 0.23 16.9 47.6 0.20

WAC401V max 2400 17.8 36.8 0.21 14.8 38.2 0.17

m i n 1050 10.2 43.6 0.12 8.6 44.1 0.10

WAC402V max 4000 28.8 36.2 0.34 23.9 37.6 0.28

m i n 1800 16.9 42.7 0.20 14.2 43.2 0.16



[m3/h] [kW] [°C] [l/s] [kW] [°C] [l/s]

WAC401 max 2400 15.3 33.7 0.12 11.7 34.4 0.09

m i n 1050 8.9 40.0 0.07 7.0 39.6 0.05

WAC402 max 4000 27.3 35.1 0.21 21.2 35.7 0.16

m i n 1800 16.1 41.3 0.12 12.7 40.9 0.10

WAC401V max 2400 12.8 30.7 0.10 9.5 31.7 0.07

m i n 1050 7.7 36.6 0.06 5.9 36.4 0.04

WAC402V max 4000 20.1 29.8 0.16 14.7 30.9 0.11

m i n 1800 12.4 35.4 0.09 9.3 35.3 0.07



[m3/h] [kW] [°C] [l/s] [kW] [°C] [l/s]

WAC401 max 2400 16.7 35.6 0.19 13.5 36.6 0.16

m i n 1050 9.5 41.6 0.11 7.7 41.7 0.09

WAC402 max 4000 29.4 36.7 0.35 23.9 37.6 0.28

m i n 1800 16.8 42.5 0.20 13.8 42.7 0.16

WAC401V max 2400 14.6 33.0 0.17 11.6 34.3 0.13

m i n 1050 8.5 38.8 0.10 6.8 39.2 0.08

WAC402V max 4000 23.6 32.4 0.28 18.6 33.7 0.22

m i n 1800 14.0 38.0 0.16 11.2 38.4 0.13

104



V V

0.01 0.1 1.0

1 0

7 0

1

0.1 1.0 1 0

0.01 0.1 1.0

1 0

7 0

1

0.1 1.0 1 0

0.1

0.7

0.01

0.1

0.7

0.01

WA

C40

2

WAC

402V

WAC40

1W

AC40

1V

Water pressure drop over WAC 400 water coil

Water pressure drop over regulations and valves

Water flow [l/s]

Water flow [m3/h]

Water flow [l/s]

Pre

ssur

e dr

op [

kPa]

Pre

ssur

e dr

op [

bar]

The pressure drop is calculated for an average temperature of 70°C (PVV 80/60).

For other water temperatures, the pressure drop is multiplied with the factor K.

Average temp. water °C 4 0 5 0 6 0 7 0 8 0 9 0

K 1.10 1.06 1.03 1.00 0.97 0.93

PRESSURE DROP WATERP

ress

ure

drop

[kP

a]

Pre

ssur

e dr

op [

bar]

Water flow [m3/h]

105



1 2 3 4

NP 1 2 3 4

NP

L1 N (L2)230 V~

~N

321 4 5 6 7 8 9NP

NL

L1 N (L2)230 V~

M~ c̊ M~ c̊ c̊

NL L

PTC

NL

M~ c̊ M~ c̊

4321

1 3 5 70

XXX

X

X

XXXX

2 6 8

1 5 73

NP 1 2 3 4 5 6 9

4 5 6 9

L1 N (L2)230 V~

2 6 8

1 5 73

AGB304

AC401/AC402

~N

1 2 3 4

NP 1 2 3 4

NP

L1 N (L2)230 V~

ACR304

AGB304

AGB304

AC401

AC401

AC401/402

AC401/402

AC401

AC401

ACR304

WIRING DIAGRAMS AC401 AND AC402

Manual 4-stage fan speed regulation with ACR304, start/stop with position limit switch AGB304

Fan speed adjustment in 4 stages with ACR304,start/stop with position limit switch AGB304

Variable fan speed adjustment with thyristor2221AG, start/stop with position limit switchAGB304

Variable fan speed adjustment with thyristor2221AG

ACR304,4-stage regulator

When the motor current exceeds6 A, a contactor should beconnected parallely with the positionlimit switch.

AGB304,position limit switch

2221AG,variable fanspeed regulator

AGB304,position limitswitch

2221AG,variable fanspeed regulator



Maximum current for the variable fan speedregulator 2221AG is 5A. It can regulate:2 x AC401 or 1 x AC402

AC401/AC402

2221AG

2221AG

106



NP 1 2 3 4 5 6 7

4 5 6

10 12 13 14 15

10 12 13 14 15

5 1

6 2

L1 L2 L3

L1 L2 L3

400V3~/230V3~

400V3~/230V3~

L1 N (L2)230 V~

L1 N (L2)230 V~

NP1 2 3 4 65 7

c̊

Hi Lo4321

1 3 5 70

XXX

X

X

XXXX

2 6 8

1 5 73

4

6 2O

XX

X

AC412/418

RTI2

EV300

ACR304AGB304

321 4 5 6 7 8 9NP

NL

L1 N (L2)230 V~

400V 3~/230V 3~

M~ c̊ M~ c̊ c̊

NL L

PTC

4321

1 3 5 70

XXX

X

X

XXXX

230 V3~

123

Hi

Lo

Diff (1-4)K

123

5 1

6 2

6 2O

XX

X

L1 L2 L313 15121110

K3K1 K2

c̊

c̊

NL

M~ c̊ M~ M~c̊

400 V3~

14

2 6 8

1 5 73

AC412/418

KRT2800

EV300ACR304

AGB304

AC412/418

Manual 4-stage fan speed regulation with ACR304, start/stop with position limit switch AGB304, automatic 2-stage heat regulation with thermostat RTI2, output selection 0�½�1 output with EV300



EV300,output selector

RTI2,electronic2-stagethermostat


Manual 4-stage fan speed regulation with ACR304, start/stop with position limit switch AGB304, automatic2-stage heat regulation with thermostat KRT2800, output selection 0�½�1 output with EV300




KRT2800,2-stagethermostat

AC412,AC418

When the motor current exceeds6 A, a contactor should beconnected parallely with the positionlimit switch.

107



NP 1 2 3 4 5 6 7

3132 33 34 35 36 37 38

4 5 6

10 12 13 14 15

10 12 13 14 15

1 2 3 4

X

X

X

X

X

X

X

XX

5 1

6 2

L1 L2 L3

L1 L2 L3

400V3~/230V3~

400V3~/230V3~

L1 N (L2)230 V~

L1 N (L2)230 V~

NP1 2 3 4 65 7

c̊

Hi Lo

AC412/418

AC412/418

AGB304

ACR3042

EV300

RTI2

NP 1 2 3 4 5 6 7

3132 33 34 35 36 37 38

4 5 6

10 12 13 14 15

10 12 13 14 15

1 2 3 4

X

X

X

X

X

X

X

XX

123

Hi

Lo

Diff (1-4)K

123

5 1

6 2

L1 L2 L3

L1 L2 L3

400V3~/230V3~

400V3~/230V3~

L1 N (L2)230 V~

6 2O

XX

X

AC412/418

AC412/418

AGB304

ACR3042

EV300

KRT2800


High/low fan speed with position limit switch AGB304 and ACR3042, automatic 2-stage heat regulationwith thermostat RTI2, output selection 0�½�1 output with EV300

ACR3042,4-stage

regulator

AGB304,posit ion

limit switch


High/low fan speed with position limit switch AGB304 and ACR3042, automatic 2-stage heat regulationwith thermostat KRT2800, output selection 0�½�1 output with EV300

ACR3042,4-stage

regulator

AGB304,posit ion

limit switch

EV300,outputselector

KRT2800,2-stagethermostat

RTI2,electronic2-stagethermostat

AC412,AC418

AC412,AC418

108



NP 1 2 3 4 5 6 9

230 V~

NL N U 1 2TK 5 6 101112TK 21222324

NP 1 2 3 4 5 6 9

21

3c̊

TRV/TVV

SD20

NP 1 2 3 4 5 6 7

230 V~

10 12 13 14 L1 L2 L3

400V3~/230V3~

NL N U 1 2TK 5 6 101112TK 21222324

51

62

8 9

6 2O

XX

X

NL 1 2

NP 1 2 3 4 5 6 7 10 12 13 14 L1 L2 L3

400V3~/230V3~

8 9 15

15

21

3c̊

WAC401-WAC402V

EV300

FRE6

FRE6

WAC401-WAC402V

AC412/418

AC412/418

KRT

KRT

WIRING DIAGRAMS WAC401, WAC401V, WAC402 AND WAC402V


Outdoor compensated variable fan speed regulation with FRE6

SD20, actuator, on/off, 230V~

TRV/TVV20/25

Outdoor compensated variable fan speed regulation with FRE6, effect limitation with the output selectorEV300 in effect stages 0-1/2-1

Outdoorsensor

Roomthermostat

Door contact

Outdoorsensor

Roomthermostat

Door contact

AC412-AC418


FRE6,dig i ta l

variable fanspeed regulator

WAC401(V)/402(V)

FRE6,dig i ta l

variable fanspeed regulator

FRE6 regulates a maximum of 4 xWAC401(V) or 2 x WAC402(V)

FRE6 regulates a maximum of 4 x AC412 or 2 xAC418

109



321 4 5 6 7 8 9NP

NL

M~ c̊ M~ c̊ c̊

NL L

PTC

4321

1 3 5 70

XXX

X

X

XXXX

NL

M~ c̊ M~ M~c̊

123

12345

L1

230 V~N (L2)

2 6 8

1 5 73

SD20

TRV/TVV

KRT1900

RTE

ACR304

AGB304

NP 1 2 3 4 5 6 9

3132 33 34 35 36 37 38

4 5 6 9

1 2 3 4

X

X

X

X

X

X

X

XX

123

12345

L1

230 V~N (L2)

AGB304

SD20

TRV/TVV

RTE102

KRT1900

WAC401-WAC402V

WAC401-WAC402V

ACR3042

WAC401-WAC402V

For variable fan speedcontrol, see wiringdiagrams on page 105.

WIRING DIAGRAMS WAC401, WAC401V, WAC402, WAC402V

KRT1900capillary tube

thermostat

RTE102,electronicthermostat

TRV/TVV20/25



High/low fan speed with position limit switch AGB304 and ACR3042, automatic heat regulation withthermostat RTE/KRT, actuator SD20 and valve TVV20/25



KRT1900,capillary

tubethermostat

RTE102,electronicthermostat

TRV/TVV20/25


Manual 4-stage fan speed regulation with ACR304, start/stop with position limit switch AGB304, automaticheat regulation with thermostat RTE/KRT, actuator SD20 and valve TVV20/25


WAC401(V)/402(V)

WAC401(V)/402(V)

Documents

Lengths: 1 and 1.7 metres Thermozone AC 400/WAC 400 · AC412 0/ /12 1350/2700 27/13 44/62 230V~/2.5A 400V3~/17.3A1000 54 AC418 0/ /18 2250/4500 27/13 45/63 230V~/4.2A 400V3~/26.0A1670