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Install the heater kits as directed by the in-
stallation instructions that come as part of the
heater kit. Follow all cautions and warnings as
directed.
START UP AND SYSTEM CHECK
Pre-Start Check List
•
Verify that the unit is level to allow proper
condensate drainage.
•
Verify that there is free airfl ow to and from
the outdoor coil and that all clearance
requirements are met.
•
Verify that the duct work is sealed to prevent
air leakage.
•
Verify that the line voltage power leads are
securely connected and the unit is properly
grounded.
•
Verify that the low voltage wires are securely
connected to the correct leads on the low
voltage terminal strip.
•
Verify that all exterior panels are replaced
and securely fastened.
•
Verify that the outdoor fan turns freely.
•
Verify that the power supply branch circuit
overcurrent protection is sized properly.
•
Verify that the thermostat is wired correctly.
The thermostat function switch should be
set to "Off" and the thermostat fan switch
should be set to "Auto'.
Start-Up Procedure
Close all electrical disconnects to energize the
system.
WARNING:
If the unit is equipped with a crankcase
heater, allow 24 hours prior to
continuing the start up procedures
to allow for heating of the refrigerant
compressor crankcase. Failure to
comply may result in damage and could
cause premature failure of the system.
This warning should be followed at
initial start up and any time the power
has been removed for 12 hours or
longer.
Air Circulation — Leave the thermostat system
switch set to “Off” and set the thermostat fan
switch to “On". The blower motor should run
continuously. Check for air delivery at the
register(s). Ensure that there are no obstructions
at the registers or in the duct work. Set thermostat
fan switch to “Auto.”
System Cooling
1. Set the thermostat system switch to
“Cool” and the thermostat fan switch to
“Auto". Gradually lower the thermostat
temperature switch below room temperature
and observe that the blower, compressor,
and fan energize. Check that air cooler than
room temperature is being discharged
at the register. Listen for any unusual
noises. Locate the source and correct as
needed.
2. After allowing the unit to run for several
minutes, set the temperature selector
above room temperature.
- The fan and compressor cycles
off with the thermostat.
- The blower should also stop
unless fan switch is set to “ON”
position
.
System Heating — If the unit has been equipped
with optional electric heater kits, set the system
thermostat switch to HEAT and set the thermostat
fan switch to AUTO. Verify that the compressor
and outdoor fan are not energized but that the
blower and heaters are. Check for warm air at
the supply registers.
UNIT MAINTENANCE
WARNING:
To avoid risk of electrical shock,
personal injury, or death, disconnect
all electrical power to the unit before
performing any maintenance or service.
The unit may have more than one elec-
trical supply.
Refrigerant Charging — Packaged air
conditioners are fully charged with R-410A
refrigerant at the factory. The system refrigerant
charge can be checked and adjusted through
the service ports provided on the front panel.
Use only gauge lines which have a “Schrader”
depression device present to actuate the valve.
Draw a vacuum on gauge lines to remove air
before attaching them to the service ports on
the unit. Refrigerant charging must be done
by qualifi ed personnel familiar with safe and
environmentally responsible refrigerant handling
procedures.
