Parts Arrangement
General
SA pre−filter must be installed at the entry to the return air duct.
These installation instructions are intended as a general guide only, for use by an experienced, licensed contractor (or equivalent).
The 15CHAX units are single−package electric units designed for outdoor installation on a rooftop or a slab. The units are equipped with a transformer and blower control for applications which do not include electric heat. Electric heat sections are available for separate order.
The unit must be sized based on heat loss and heat gain calculations made according to the methods of the Air Conditioning Contractors of America (ACCA).
The units are shipped assembled. All piping, refrigerant charge, and electrical wiring are factory−installed and tested. The units require electric power, condensate drain and duct connections at the point of installation.
Use of this unit as a construction heater or air conditioner is not recommended during any phase of construction. Very low return air temperatures, harmful vapors and operation of the unit with clogged or misplaced filters will damage the unit.
If this unit has been used for heating or cooling of buildings or structures under construction, the following conditions must be met or the warranty will be void:
S A room thermostat must control the unit. The use of fixed jumpers that will provide continuous heating or cooling is not allowed.
S The return air duct must be provided and sealed to the unit.
S Return air temperature range between 55°F (13°C) and 80°F (27°C) must be maintained.
S Air filters must be replaced and pre−filter must be re- moved upon construction completion.
SThe unit components, duct system, air filters and evap- orator coil must be thoroughly cleaned following final construction clean−up.
SThe unit operating conditions (including airflow, cool- ing operation, and heating operation) must be verified according to these installation instructions.
Requirements
These units must be installed in accordance with all applicable national and local safety codes.
These instructions are intended as a general guide and do not supersede local codes in any way. Consult authorities having jurisdiction before installation.
If components are to be added to a unit to meet local codes, they are to be installed at the dealer’s and/or customer’s expense.
These units are design listed by UL in both the United States and Canada as follows:
DFor use as a cooling unit.
DFor outdoor installation only.
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