Carrier Atmosphera 42EM Series Manual
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Carrier Atmosphera 42EM Series Manual

Ducted fan coil unit
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Ducted Fan Coil Unit
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Summary of Contents for Carrier Atmosphera 42EM Series

  • Page 1 42EM Ducted Fan Coil Unit Supply Moduboot Selection manual...

  • Page 2: Table Of Contents

    7.2 - Flexible water pipes ......25 1.3 - Carrier QUALITY ......3 7.3 - Technical specification for the heating/cooling...

  • Page 3: Introduction

    1.1 - Comfort The 42EM Atmosphera from Carrier is a compact air condition- The top of the range Atmosphera can have a Carrier numeric ing system, available in three sizes - 1, 2 and 3. Sizes 2 and 3 controller to provide optimised comfort for the building are both available in four models and four motor drive selec- occupants.

  • Page 4: Features

    Sizes 2 and 3 The Carrier 42EM Atmosphera comes in three sizes - 1, 2 and 3. Sizes 2 and 3 are both available in four models and four motor drive selections, suitable for air conditioning of rooms from 25 to 75 m in size.
  • Page 5 2.1.4 - Codification 42EM 1 0 A XXX... Unit size (chassis) (1, 2 or 3) Fan motor assembly size (0, 1, 2 or 3) Chassis and insulation type (A, B, C or D) A = modular model with standard insulation B = modular model with insulation class 0 in accordance with BS 476, part 6 and 7 and metal spigots C = compact model with standard insulation D = compact model with insulation class 0 in accordance with BS 476, part 6 and 7 and metal spigots...

  • Page 6: Several Possible Configurations

    2.2 - Several possible configurations Depending on the installation site requirements, several versions of the Atmosphera can be used: • The base unit is designed for non-ducted return air. In this configuration filter removal is from the rear of the unit. 42EMxxA...

  • Page 7: Operating Limits

    To avoid the risk of stratification and the resulting discom- fort, Carrier advises to keep the discharge temperature The results must be in accordance with the values shown below: below 35°C.

  • Page 8: Physical And Electrical Data

    The water circuit in the Atmosphera units is guaranteed for an operating pressure of 1000 kPa, although the Atmosphera units components are individually designed and tested for a pressure of 1600 kPa. For applications requiring an operating pressure of more than 1000 kPa, please contact your local Carrier representative. Legend: Based on an entering water temperature of 7°C, entering air at 27°C dry bulb and 47% relative humidity, and a water temperature difference of 5 K at maximum...
  • Page 9 The water circuit in the Atmosphera units is guaranteed for an operating pressure of 1000 kPa, although the Atmosphera units components are individually designed and tested for a pressure of 1600 kPa. For applications requiring an operating pressure of more than 1000 kPa, please contact your local Carrier representative. Legend: Based on an entering water temperature of 7°C, entering air at 27°C dry bulb and 47% relative humidity, and a water temperature difference of 5 K at maximum...

  • Page 10: Dimensional Drawings

    2.5 - Dimensional drawings 2.5.1 - Maintenance access space required, mm Sizes 1, 2 and 3 Non-ducted return air 42EM Size 1 42EM Size 2 1250 42EM Size 3 1250 Sizes 1, 2 and 3 Ducted return air 42EM Size 1 42EM Size 2 1250 42EM Size 3...
  • Page 11 2.5.2 - Overall dimensions, mm Size 1 Non-ducted return air 42EM10A... 42EM10B... Size 1 Ducted return air, modular model 42EM10A... 42EM10B...
  • Page 12 2.5 - Dimensional drawings, cont. Size 1 Ducted return air, compact, in-line model 42EM10C... 42EM10D...
  • Page 13 2.5.2 - Overall dimensions, mm Size 2 Non-ducted return air 42EM2xA... 42EM2xB... 42EM Size 2.0 42EM Sizes 2.1, 2.2, 2.3 Size 2 Ducted return air, modular model 42EM2xA... 42EM2xB... 42EM Size 2.0 42EM Sizes 2.1, 2.2, 2.3...
  • Page 14 2.5 - Dimensional drawings, cont. Size 2 Ducted return air, compact, in-line model 42EM2xC... 42EM2xD... 42EM Size 2.0 42EM Sizes 2.1, 2.2, 2.3...
  • Page 15 2.5.2 - Overall dimensions, mm Size 3 Non-ducted return air Right-hand connections Left-hand connections 42EM3xA... 42EM3xB... 42EM Size 3.0 42EM Sizes 3.1, 3.2, 3.3 Size 3 Ducted return air, modular model Right-hand connections Left-hand connections 42EM Size 3.0 42EM Sizes 3.1, 3.2, 3.3 42EM3xA...
  • Page 16 2.5 - Dimensional drawings, cont. Size 3 Ducted return air, compact, in-line model Right-hand connections Left-hand connections 42EM3xC... 42EM3xD... 42EM Size 3.0 42EM Sizes 3.1, 3.2, 3.3...

  • Page 17: Safety Considerations

    Do not connect heavy inductive loads to the same sories before carrying out any work. Disconnect the main power electrical supply (circuit breaker) used by the supply with an isolating device (not supplied by Carrier). controllers, power modules or speed controllers. Use the screened cable type recommended by...

  • Page 18: Main Components

    4.1 - Fresh air controller variable fresh air flow controller from 0 to 55 l/s (0 to 200 m /h). This is connected to the numeric Carrier controller and can 4.1.1 - Constant fresh air controller regulate the fresh air intake in two ways: The 42EM Atmosphera can be fitted with a constant fresh air •...

  • Page 19: Water Coil

    4.3 - Water coil 4.5 - Electric heater The water coil has aluminium fins mechanically bonded by Electric heater-resistance wire type expansion onto copper tubes. • Supply voltage: 230 V - 1 ph - 50 Hz Water inlet and outlet connections are 1/2” BSP union nuts •...

  • Page 20: Fan Motor Assembly

    4.6 - Fan motor assembly 4.6.2 - Maintenance/access 4.6.1 - Codification Remove the door. Loosen 3 screws 42EM 1 0 XXXXX..• Unit size (chassis): 1, 2 or 3 • Fan motor assembly size: 0, 1, 2, 3 The 42EM Atmosphera size 1 has a multi-speed fan motor assembly (size 0) with forward-curved, double-inlet, single- wheel fans.

  • Page 21: Different Atmosphera Configurations

    5 - DIFFERENT ATMOSPHERA CONFIGURATIONS c) The Atmosphera is equipped with a multi-speed fan motor and a 3-row cooling coil and 1-row heating coil (4- Each Atmosphera can be fitted with one or two on/off valves pipe system). (two or three port) and flexible water pipes, depending on the coil configuration.

  • Page 22: Control

    (supplied by Carrier). 6-speed switch Carrier room thermostat Other controls CONTROL available on request from the factory NOTE : For further details on the Carrier controllers, mentioned above, please refer to the technical documentation on each of these controllers.

  • Page 23: Control With Room Thermostat Only

    In addition a fuse is also installed on this DIN rail and an ON/OFF switch is included on the metal box. The 42EM Atmosphera can be controlled by a Carrier room thermostat. In this version the Atmosphera can operate in three fan speed mode, controlled by a Carrier room thermostat (controlling 6.1.1 - Standard configuration...

  • Page 24: Technical Specifications

    • Brass valve 7.1.1 - Electrothermal actuator (on/off) • Nominal size 15 This ON/OFF type 230 V a.c. actuator is used with Carrier • Kvs value: 1 numeric controllers and Carrier electronic room thermostats. • Fluid: water and glycol solution (max. 40% glycol) •...

  • Page 25: Flexible Water Pipes

    7.2 - Flexible water pipes When a heating/cooling changeover switch is connected between the room thermostat and the water flow control valve, the changeover between heating and cooling modes takes place automatically in accordance with the following diagram. T° ∆: Differential 11.1 K ± 3.3 CM: Cooling mode 7.2.1 - Materials HM: Heating mode...

  • Page 26: Accessories

    (metal, wood, plaster etc.). 8.1 - Carrier electronic thermostat The Zone User Interface is held in the base by a system of grips and a “velcro” fastener.

  • Page 27: Condensate Drain Pump

    8.6 - Condensate drain pump The alarm condition no longer applies when the level is below the alarm threshold. 8.6.1 - Introduction Atmosphera units can be fitted with condensate drain pumps, The device includes a volt-free changeover switch with a preferably before but if necessary after the unit has been capacity of 8 A/250 V (resistive load).

  • Page 28: Atmosphera Performance Data

    9 - ATMOSPHERA PERFORMANCE DATA 9.1 - Cooling capacity - water coil 9.1.1 - Size 1 Size 1.0 Relative humidity 50% Water Air flow l/s (m temp. (°C) 56 (200) 83 (300) 111 (400) 139 (500) 167 (600) 180 (650) 194 (700) entering/ Dry bulb temperature at coil inlet (°C)
  • Page 29 9.1 - Cooling capacity - water coil 9.1.2 - Size 2 Size 2.0, 2.1 Size 2.2 Size 2.3 Relative humidity 50% Water Air flow l/s (m temp. (°C) 83 (300) 125 (450) 167 (600) 208 (750) 264 (950) 319 (1150) 347 (1250) entering/ Dry bulb temperature at coil inlet (°C)

  • Page 30: Heating Capacity - Water Coil

    44.5 44.5 44.3 44.3 44.2 NOTE: Carrier advises that the supply air temperature be Legend: - Heating capacity (kW) kept below 35°C in order to avoid the risk of stratification. TSA - Supply air temperature (°C) - Water flow rate (l/h) If the Atmosphera unit size 2 or 3 has only two spigots, the NOTE: To convert l/h to l/s, divide by 3600.
  • Page 31 26.8 Legend: NOTE: To avoid the risk of stratification and the resulting - Heating capacity (kW) discomfort, Carrier advises to keep the discharge TSA - Supply air temperature (°C) temperature below 35°C. - Water flow rate (l/h) NOTE: To convert l/h to l/s, divide by 3600.

  • Page 32: Water Coil Pressure Drops

    9.3 - Water coil pressure drops 9.3.1 - Size 1 NOTE: To convert l/h to l/s, divide by 3600. 1000 Heating Cooling 1000 Water flow l/h 9.3.2 - Size 2 1000 Heating Cooling 1000 2000 3000 600 700 800 900 Water flow l/h 9.3.3 - Size 3 Heating...

  • Page 33: Water Valve Pressure Drops

    9.4 - Water valve pressure drops 9.4.1 - 2-way 1/2” water valve pressure drop KVs: 1 Flow A - AB Water flow l/h 9.4.2 - 3-way 1/2” water valve pressure drop (valve with integral bypass) KVs: 0.63 Flow B - AB KVs: 1 Flow A - AB Water flow l/h...

  • Page 34: Sound Power Levels

    9.5 - Sound power levels 9.5.1 - Standard insulation 42EM 2.2 and 3.2 - with three discharge spigots 42EM 1.0 - with two discharge spigots Octave band frequency (Hz) Octave band frequency (Hz) Type Type 57.3 55.1 46.2 43.1 37.1 31.3 26.5 50.3...
  • Page 35 9.5.2 - Insulation class ‘0’ in accordance with BS476, part 6 and 7 42EM 1.0 - with two discharge spigots 42EM 2.2 and 3.2 - with three discharge spigots Octave band frequency (Hz) Octave band frequency (Hz) Type Type 56.8 54.1 46.2 43.3...
  • Page 36 9.5.3 - Return air plenum attenuation The sound power level measurements were carried out on a non-ducted unit without return air plenum. If the unit includes a return air plenum, correct the sound power levels (RET) using the correction factors in the table below: Unit size Octave band frequency (Hz) 42EM 1.0...

  • Page 37: Electrical Data

    9.6 - Electrical data 9.6.1 - Size 1.0 Press. Press. (l/s) (Pa) (l/s) (Pa) 0.52 0.26 0.52 0.25 0.51 0.25 0.50 0.24 0.50 0.24 0.48 0.23 0.48 0.47 0.46 0.37 0.21 0.37 0.21 0.36 0.21 0.35 0.20 0.34 0.20 0.34 0.34 0.33 0.33...
  • Page 38 9.6 - Electrical data, cont. 9.6.3 - Size 2.1 and 3.1 Press. Press. (rpm) (l/s) (Pa) (rpm) (l/s) (Pa) 0.35 0.57 0.34 0.52 1074 0.31 0.49 1144 1012 0.46 1197 0.28 1095 0.45 1232 0.28 1118 0.43 1262 1305 0.52 0.27 0.26 0.46...
  • Page 39 9.6.5 - Size 2.3 and 3.3 Press. (rpm) (l/s) (Pa) 1.01 1307 1494 Press. 0.94 1342 1266 (rpm) (l/s) (Pa) 0.91 1359 1141 0.71 1065 1138 0.89 1365 1074 0.66 1147 1043 0.86 1381 0.60 1216 0.83 1393 0.58 1253 0.81 1406 0.53...

  • Page 40: Air Flow Data

    9.7 - Air flow data 9.7.1 - Static pressure available (Pa) against air flow (m Atmosphera size 1.0 (unit without spigot) Air flow (m NOTE: To convert m /h to l/s, divide by 3.6. NOTE: The data is for units without supply and return IMPORTANT: The curves were derived by smoothing, based plenums.
  • Page 41 9.7.2 - Static pressure available (Pa) against air flow (m Atmosphera size 2.0 and 3.0 (unit without spigot) Air flow (m NOTE: To convert m /h to l/s, divide by 3.6. Atmosphera size 2.1 and 3.1 (unit without spigot) Air flow (m NOTE: To convert m /h to l/s, divide by 3.6.
  • Page 42 9.7 - Air flow data, cont. 9.7.2 - Static pressure available (Pa) against air flow (m Atmosphera size 2.2 and 3.2 (unit without spigot) 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000 1050 1100 115 120 125 1300 Air flow (m NOTE: To convert m /h to l/s, divide by 3.6.
  • Page 43 9.7.2.1 - Air pressure drops (Pa) for octopus plenum boxes as a function of the number of spigots (200 mm Ø) Sizes 2.1, 2.2, 2.3, 3.1, 3.2 and 3.3 Air flow (m 1000 1100 1200 1300 1400 1500 Air flow (l/s) 2 spigots 14.0 21.8...

  • Page 44: Codification

    10 - CODIFICATION Character Caractères Codification Example Type d’unité Unit type Taille d’unité Unit size Air flow range (fan motor assembly size) Gamme de débit (taille du motoventilateur) Chassis and insulation type Type de chassis et isolation Type of control Régulation Type batterie + bac à...
  • Page 45 Character Codification Description Character Codification Description Control (continued) Control (continued) Terminal strip and plastic cover Terminal strip and plastic cover Unit with 1 on/off type two-way Unit with 1 on/off type two-way control valve, cables wired to a control valve, fan and electric terminal block and protected by a heater cables wired to a terminal cover.
  • Page 46 Character Codification Description Character Codification Description Control (continued) Control (continued) Terminal strip and metal cover Terminal strip and metal cover Unit without control valves for 2- Unit with 1 on/off type three-way pipe or 4-pipe configuration with control valve with flexible water fan cables wired to a terminal block pipes, cables wired to a terminal and protected by a metal cover.
  • Page 47 Character Codification Description Character Codification Description Control (continued) Control (continued) Terminal strip and metal cover Manual speed selector Unit with 1 on/off type three-way Unit with manual speed selector control valve, changeover switch and 1 on/off type three-way control fan and electric heater cables wired valve.
  • Page 48 Character Codification Description Character Codification Description Control (continued) Control (continued) Maestro control Maestro control Unit with Maestro controller, 1 Unit with Maestro controller, 1 on/off type two-way control valve, on/off type three-way control valve a return air sensor and electric with flexible water pipes, a return heater control.
  • Page 49 Character Codification Description Character Codification Description Control (continued) Fresh air supply Aquasmart control Base unit without fresh air supply Unit with Aquasmart control, 1 on/off type 3-way valves, a water Right-hand spigot in air flow temp. sensor and a return air direction sensor, and electric heater control.
  • Page 50 Character Codification Description Character Codification Description No. of return air spigots No. of supply air spigots Non-ducted return air (filter Non-ducted return air provided) 1 (Size 1) 1 return air spigot 1 (Size 1) 1 return air spigot 2 (Sizes 1, 2 + 3) 2 return air spigots 2 (Size 1, 2 + 3) 2 return air spigots 3 (Sizes 2 + 3) 3 return air spigots...
  • Page 51 Character Codification Description Fan motor speed wiring Codification RED wire GREY wire BLACK wire REP. L wire 6-speed wiring Auto transformer terminal connection arrangements (Q std) NOTE: Terminal 1 = highest speed Terminal 6 = lowest speed Character Codification Description Modification index Specials...

  • Page 52: Specification Guide

    11 - SPECIFICATION GUIDE Numerical control • Supply 42EM Atmosphera fan coil units in accordance • The numerical controls shall use the CCN (Carrier with the certified drawings. Comfort Network) communication protocol. • The performance of each 42EM unit shall conform to the published technical and performance data.

This manual is also suitable for:

Atmosphera 42em a seriesAtmosphera 42em b seriesAtmosphera 42em c seriesAtmosphera 42em d seriesAtmosphera 42em10a seriesAtmosphera 42em10b series ... Show all

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