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Carrier Atmosphera 42EM series, Installation, Operation And Maintenance Instructions

The Carrier Atmosphera 42EM series is a high-quality air conditioning unit designed to provide optimal comfort in any space. Ensure proper installation and operation with the included Installation, Operation, and Maintenance Instructions manual, available for free download from manualshive.com. Keep your unit running smoothly with this essential resource.

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42EM

Original document

Ducted fan coil units

INSTALLATION, OPERATION AND 
MAINTENANCE INSTRUCTIONS

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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