A. Introduction
Heat Controller Air Handlers come in a variety of models and sizes for upflow or horizontal use and when combined with cooling coils, are ready for air conditioning and heat pump applications.
These instructions are primarily to assist qualified individuals trained and experienced in the proper installation of this type of equipment. Refer to authorities having jurisdiction for additional guidance.
B. Rules for Safe Installation and Operation
1.Read these rules and the instructions carefully. Failure to follow the rules and the instructions could cause a malfunction of the unit, and a possible safety hazard. Keep these instructions nearby the unit for future reference.
2.This unit has been designed and manufactured to comply with National Codes; however, it is the installer’s responsibility to install this unit to comply with prevailing codes and regulations. Heat Controller, Inc assumes no responsibility for units installed in violation of any code or regulation.
3.Before servicing, ALWAYS SHUT OFF ELECTRICITY TO THE UNIT. This will prevent any electrical shocks.
4.Ground the unit to prevent electric shock. All electrical wiring should be in accordance with the National Electrical Code.
5.Duct work must be installed in accordance with the standards of the National Fire Protection Association (NFPA) for the installation of Air Conditioning, Warm Air Heating and Ventilating Systems (NFPA 90A and 90B). The air distribution duct system should be sized for 0.2 inches of static pressure. See National Environmental Systems Contractors Association Manual K for duct sizing recommendations. Ductwork in
6.The safety testing agency label appearing on the unit covers the unit and factory installed coil(s) only. It does not cover any other equipment.
7.Exterior surface of cabinet may sweat when unit is installed in
8.While designed to operate quietly when properly installed, several steps should be taken to insure this. Use of isolation pads when mounting unit, flexible duct collars for discharge, and use of acoustical duct liners are all good installation practices that promote quiet operation.
9.Cabinet insulation is rated for R=4.2 (standard). Some jurisdictions require R=6.0 on installations in
C. Unpacking the Unit
The unit should be unpacked on receipt and if damage is found, a claim should be made immediately to the shipping carrier. This is the responsibility of the entity receiving the equipment. The air handler is completely assembled, as received. Electric power, thermostat wiring, refrigerant piping and duct connections are needed to complete an installation. Additionally, a drain connections will be needed.
Check the rating plate for unit size, voltage, phase etc. to make sure unit meets your requirements.
D.Physical Installation
MINIMUM CLEARANCES
These units have a 0” minimum clearance to combustible materials rating from all cabinet surfaces. The unit should be installed with serviceability clearance of 30” from the front of the unit. The unit can be serviced entirely from the front, including replacing the filter. Be sure and route primary and secondary drain connections so as not to obstruct filter replacement.
ARRANGEMENT
Unit is shipped from the factory arranged to be installed in a vertical upflow or horizontal right to left airflow position (standard) or field convertible to a horizontal left to right airflow position.
Upflow Application
In an upflow installation the discharge outlet is at the top. Care should be taken to ensure unit is level to permit proper condensate drainage. Normal upflow installation will be in a basement or closet. If installed in a closet, the closet should have a platform framed in, with an opening on top of the platform centered in the closet. Connect the supply air outlet to a discharge air plenum. Install return air grilles from outside the closet to space below the platform. Platform must be at least 10” above the floor. Run all supply and return ductwork in accordance with local codes.
Caution!! A “P” trap must be installed in the coil drain line! Cap unused drain fittings.
Horizontal application
Horizontal application will normally be used in an attic or crawl space. This type installation requires a return air duct be attached to the air handler inlet. The opposite end of the return air duct is attached to a return air filter grill through the ceiling or wall. Remove filter from unit if filter grill is used. The unit is shipped in right to left configuration.
(Warning! To ensure unit will not interfere with drains and refrigerant lines modification must be
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