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Figure titles and legends:

1  Clearance without return air plenum

2  Clearance with return air plenum

3  Electrical danger pictogram

4  Caution hand hazard pictogram

5  General danger pictogram

6  Lifting unit for installation in a false ceiling

7/8  Levelling the unit

9  Condensate drain pipe

 

9a 

20 mm/m fall in horizontal pipe run

 

9b 

50 mm siphon

10  Several units connected to one condensate collector

 

10a  20 mm/m fall

11  Fresh air controller modification

12  Fan assembly removal

 

12a  Removing fan access panel

 

12b  Position of torx screws

 

12c  Slide assembly down

13  Capacitor assembly

14  Fan speed controller

 

14a  Low speed connector - red wire

 

14b  Medium speed connector - grey wire

 

14c  High speed connector - black wire

 L  Neutral

15  Optional fan speed terminal block

 

15a  Customer connection

  15b Motor

16  Wiring 42EM sizes 22 and 32

  16a Motor

  16b Auto-transformer

17  Electric heater removal

 

17a  Location of screw

18  Multi-speed bare-wire unit

 

22 

Earth - yellow/green wire

 

35 

Live, electric heater (option) - brown wire

 

36 

Neutral, electric heater (option) - blue wire

 

37 

Neutral - blue wire

 

38 

Low speed - red wire

 

39 

Medium speed - grey wire

 

40 

High speed - black wire

19  Variable-speed bare-wire LEC unit

 

20 

0-10 V - yellow wire

 

21 

GND - blue wire

 

22 

Earth - yellow/green wire

 

41 

Live, 230 V - brown wire

 

42 

Neutral, 230 V - blue wire

 

23      Electrical heater - Live, 230 V - brown wire

 

24      Electrical heater - Neutral, 230 V - blue wire

20  Multi-speed unit with control box

 

22 

Earth - yellow/green wire

 

23 

Neutral, 230 V - blue wire

 

24 

Live, 230 V - brown wire

 

25 

Cooling valve actuator - brown wire

 

26 

Heating valve or electric heater actuator 

- brown wire

 

27 

Changeover sensor - brown wire

  28 Relay

 

29 

Very high speed 1 - black wire

 

30 

Medium speed 3 - red wire

 

31 

Low speed 5 - green wire

 

32 

Very low speed 6 - purple wire

 

33 

Medium speed 4 - orange wire

 

34 

High speed 2 - grey wire

21  LEC unit with control box

 

20 

0-10 V - yellow wire

 

21 

GND - blue wire

 

22 

Earth - yellow/green wire

 

23 

Neutral, 230 V - blue wire

 

24 

Live, 230 V - brown wire

 

25 

Cooling valve actuator - brown wire

 

26 

Heating valve or electric heater actuator 

- brown wire

 

27 

Changeover sensor - brown wire

  28 Relay

22  Multi-speeds unit with fast connector option -  

6 speeds wired

 

L      Neutral, blue wire 

        1      Speed 1, black wire

        2      Speed 2, grey wire

        3      Speed 3, red wire 

        4      Speed 4, orange wire

        5    

Speed 5, green wire

        6    

Speed 6, purple wire

        7    

GND, green/ yellow wire

23  Coil inlet/outlet positions, all sizes

 

In 

Water in

 

Out  Water out

 

4-w V  Four-way valves

 

2-w V  Two-way valves

24     Coil drawing with cooling and heating side position

        Outlet   Water out 

 

Inlet      Water in 

        25 N.m Torque wrenches max

        1           Air flow direction

        24a      Coil size 0x/1x/2x with 4 pipes 

         

2a     Cold valves side  

         

3a     Hot valves side  

        24b       Coil size 3x with 4 pipes (Right-hand 

connection)

        

2b     Cold valves side  

         

3b     Hot valves side  

        24c       Coil size 3x with 4 pipes (Left-hand 

connection)

         

2c     Hot valves side  

         

3c     Cold valves side 

25       Meaning of wires - Proportinal valve actuator

            25a          Black wire (230 V valve actuator), actuator 

rod rising 

            25b          Green wire (24 V valve actuator), actuator 

rod rising            

            25c         Brown wire, Actuator rod lowering 

            25d         Actuator rod in high position

            25e         Actuator rod in low position

26       Condensate pump positions

            26a         Highest pump position

            26b         Lowest pump position

27     Wiring 42EM sizes 23 and 33 

 

  27a        Unused speed 

 

  27b, 27c, 27d (speeds wiring) 

 

  Same wiring colors as Fig. 14 for 3 speeds wired

 

  Same wiring colors as Fig. 20 for all speeds wired

 

  27e         Neutral - blue wire 

 

  27f          Earth - yellow/ green wire  

Summary of Contents for Atmosphera 42EM series

Page 1: ...42EM Original document Ducted fan coil units INSTALLATION OPERATION AND MAINTENANCE INSTRUCTIONS...

Page 2: ...he control of the unit 10 2 5 Conformity 10 3 INSTALLATION OF THE UNIT 10 3 1 Installing the unit in the false ceiling 10 3 2 Installation procedure 10 3 3 Removal procedure 11 4 COMPONENTS 11 4 1 Fan...

Page 3: ...M T0 250 680 250 42EM T1 250 830 250 42EM T2 250 1250 250 42EM T3 250 1250 250 8 10a 10a 1 2 3 4 1 2 3 4 4 3 2 1 4 3 2 1 A B 11 l s m3 h A B MR60 17 60 4 4 4 4 MR75 21 75 4 3 4 3 MR85 24 85 3 3 3 2 MR...

Page 4: ...4 13 14 17 12a 12b 12c 14a 16a 16b 17a 17a 12 16 Hg Cg N N N L L 1 2 3 4 5 6 15 15b 15a 14b 14c...

Page 5: ...5 32 33 34 28 22 23 24 25 26 27 29 30 31 23 24 20 21 41 42 22 35 36 40 39 38 37 22 L N V3 V2 V1 N 18 19 20 21 28 22 23 24 25 26 27 20 21 22 6 5 4 3 2 1 L 7 6 5 4 3 2 1 L...

Page 6: ...6 81 40 250 18 81 40 250 18 G 1 2 G 1 2 4 w V 2 w V 23 42EM Out In In Out 1 2a 3a 1 2b 3b 1 2c 3c 24a 24b 24c 24...

Page 7: ...7 26 25 27a 27b 27c 27d 27e 27f 27...

Page 8: ...27 Changeover sensor brown wire 28 Relay 29 Very high speed 1 black wire 30 Medium speed 3 red wire 31 Low speed 5 green wire 32 Very low speed 6 purple wire 33 Medium speed 4 orange wire 34 High spee...

Page 9: ...o the shipping company Do not unpack the units until just before they are due to be installed and make sure they are as close as possible to the installation site when unpacking them Do not place heav...

Page 10: ...ct heavy inductive loads to the same electrical supply circuit breaker used by the controllers power modules or speed controllers Use the screened cable type recommended by Carrier and make sure all c...

Page 11: ...ng the gas connectors WARNING Since the flexible water pipes do not have drain valves a receiver must be provided to allow the cooling coil to be drained Disconnect the supply air ducts Disconnect the...

Page 12: ...pply to the unit before carrying out any work on the unit Close the isolating valves on the manifolds Unscrew the union nuts to disconnect the flexible water pipes Remove the valve actuators taking ca...

Page 13: ...ller requires a differential pressure in the range of 50 Pa to 200 Pa The controller with adjustable fresh air flow from 17 l s 60 m3 h to 44 l s 160 m3 h requires a differential pressure in the range...

Page 14: ...em Check that there are no leaks and reconnect the power to the unit WARNING When replacing a valve always ensure that the direction of flow through the valve is as shown by the arrow on the valve bod...

Page 15: ...spigots and 2 supply air spigots V Compact unit with 3 return air spigots and 3 supply air spigots NOTE Terminal 1 highest speed Terminal 6 lowest speed Fan set Codification last digit or option 600 R...

Page 16: ...nt certification com www certiflash com Order No 14226 01 2015 Supersedes order No 14226 11 2014 Printed in the European Union Manufacturer reserves the right to change any product specifications with...

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