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40RMS

Air Handling Unit
Packaged,Double-Wall
Indoor Application

2250 - 15000 Nominal CFM

The 40RMS series comes standard with double skin units for better indoor air quality (IAQ) and has a multi-position design that allows for vertical or horizontal installation. Powerful fan systems allow for easy adaptation to existing duct work.

"The 40RMS Series is your best choice for Chilled water packaged air handlers. All models offer excellent fan performance, a unique combination of indoor air quality features, easy installation, and affordable prices. Their versatility and state-of-the-art features will provide economical performance now and in the future.


Quick installation is ensured by the multiposition design. Units can be installed in either the horizontal or vertical (up flow) configuration without modifications.

  • Multiposition design can be installed horizontally or vertically without modification
  • Standard double skin units for a better indoor air quality (IAQ)
  • Polyester powder painted zinc coated steel panels provide additional protection against rusting & discoloration in areas with high UV factor
  • High-static design meets a wider range of applications than competitive packaged air handler lines
  • Economizer accessory provides ven- tilation air and ``free'' cooling
  • Cooling coils with mechanically- bonded fins provide peak heat transfer
  • Standard sloped drain pans
  • 1" WASHABLE filters having frontal access to remove them
  • Easy installation and maintenance; removal of one side panel allows access to serviceable components; external piping connections
  • An alternate motor and/or medium-or high-static drive available to meet the airflow requirements.

Factory-installed options

Alternate fan motors and drives are available to pro- vide the widest possible range of perfomance.

Field-installed accessories

Two-row hot water coils have copper tubes mechani- cally bonded to aluminum plate fins and non-ferrous headers.

One-row steam coil has copper tubes and aluminum fins. The Inner Distributing Tube (IDT) design provides unifor m temperatures acrossthe coil face.The steam coil hasa broad operating pressure range; up to 175 psig (1207 kPag) at400 F (204.4 C) and up to 300 psig (2069 kPag)at 300 F (148.9 C). The IDT steam coils are especiallysuited to ap-plications where sub-freezingair enters the unit.

Electric r esistance heat coils have an open-wire design and are mounted in a rigid frame. Safety cutouts for high temperature conditions are standard. Terminal block for single-point power connection is included.

Economizer (enthalpy contr olled) provides ventilation air and ``free'' cooling if outside ambient temperature and humidity are suitable. Can also be used with CO2 sensors to help meet indoor air quality requirements.

Discharge plenum directs the air discharge directly into the occupied space; integral horizontal and vertical louvers enable redirection of airflow. Accessory is available un- painted or painted. Field assembly required.

Standard units available from the factory are in Double skin.

Return-air grille provides a protective barrier over thereturn-air opening and givesa finished appearanceto unitsinstalled in the occupied space. Accessoryis availableunpaintedor painted.

Subbase provides a stable, raised platform and room forcondensatedrain trap connection for verticalfloor-mountedunits. Accessoryis availableunpainted or painted.

Over head suspension package includes necessarybracketsto support units in horizontal ceiling installations.

CO2 sensors can be used in conjunction with the economizeraccessory to help meet indoor air quality requirements.The sensor signals the economizer to open whenthe CO2 level in the space exceeds the set point. A CarrierComfort System programmable thermostat can be used tooverride the sensor if the outside air temperatureis too high or too low.

Carrier's line of thermostats provide both programmableand non-programmable capability with the newDebonair line of commercial programmable thermostats,the TEMP System controls offer communication capabilitywith staged heating and cooling, the Commercial Electronicthermostats provide 7-day programmablecapabilityfor economicalapplications,while the Non-Programmablethermostatsoffer a multitude of stagedheating and coolingsubbaseoptions.

Condensate drain trap includes an overflow shutoff switch that can be wired to turn off the unit if the trap becomes plugged. Kit also includes a wire harnessthat can be connectedto an alarm if desired. The transparent trap is designedfor easy service and maintenance.

  • Multiposition design can be installed horizontally or vertically without modification
  • Standard double skin units for a better indoor air quality (IAQ)
  • Polyester powder painted zinc coated steel panels provide additional protection against rusting & discoloration in areas with high UV factor
  • High-static design meets a wider range of applications than competitive packaged air handler lines
  • Economizer accessory provides ven- tilation air and ``free'' cooling
  • Cooling coils with mechanically- bonded fins provide peak heat transfer
  • Standard sloped drain pans
  • 1" WASHABLE filters having frontal access to remove them
  • Easy installation and maintenance; removal of one side panel allows access to serviceable components; external piping connections
  • An alternate motor and/or medium-or high-static drive available to meet the airflow requirements.

Factory-installed options

Alternate fan motors and drives are available to pro- vide the widest possible range of perfomance.

Field-installed accessories

Two-row hot water coils have copper tubes mechani- cally bonded to aluminum plate fins and non-ferrous headers.

One-row steam coil has copper tubes and aluminum fins. The Inner Distributing Tube (IDT) design provides unifor m temperatures acrossthe coil face.The steam coil hasa broad operating pressure range; up to 175 psig (1207 kPag) at400 F (204.4 C) and up to 300 psig (2069 kPag)at 300 F (148.9 C). The IDT steam coils are especiallysuited to ap-plications where sub-freezingair enters the unit.

Electric r esistance heat coils have an open-wire design and are mounted in a rigid frame. Safety cutouts for high temperature conditions are standard. Terminal block for single-point power connection is included.

Economizer (enthalpy contr olled) provides ventilation air and ``free'' cooling if outside ambient temperature and humidity are suitable. Can also be used with CO2 sensors to help meet indoor air quality requirements.

Discharge plenum directs the air discharge directly into the occupied space; integral horizontal and vertical louvers enable redirection of airflow. Accessory is available un- painted or painted. Field assembly required.

Standard units available from the factory are in Double skin.

Return-air grille provides a protective barrier over thereturn-air opening and givesa finished appearanceto unitsinstalled in the occupied space. Accessoryis availableunpaintedor painted.

Subbase provides a stable, raised platform and room forcondensatedrain trap connection for verticalfloor-mountedunits. Accessoryis availableunpainted or painted.

Over head suspension package includes necessarybracketsto support units in horizontal ceiling installations.

CO2 sensors can be used in conjunction with the economizeraccessory to help meet indoor air quality requirements.The sensor signals the economizer to open whenthe CO2 level in the space exceeds the set point. A CarrierComfort System programmable thermostat can be used tooverride the sensor if the outside air temperatureis too high or too low.

Carrier's line of thermostats provide both programmableand non-programmable capability with the newDebonair line of commercial programmable thermostats,the TEMP System controls offer communication capabilitywith staged heating and cooling, the Commercial Electronicthermostats provide 7-day programmablecapabilityfor economicalapplications,while the Non-Programmablethermostatsoffer a multitude of stagedheating and coolingsubbaseoptions.

Condensate drain trap includes an overflow shutoff switch that can be wired to turn off the unit if the trap becomes plugged. Kit also includes a wire harnessthat can be connectedto an alarm if desired. The transparent trap is designedfor easy service and maintenance.