11
Fixed torque ecM Motor
1. Shut off all electrical power to the unit and remove the
blower panel. Locate the orange and red wires terminated to
the blower motor.
note:
The orange wire controls cooling
operation while the red wire controls heating operation.
2. Verify the required speed from the airflow data found in
. Place appropriate wire on the correct motor speed
tap for the required airflow point.
Start uP & SySteM cHeck
Pre-Start check list
√
Verify the unit is level and allows condensate to drain.
√
Verify the outdoor coil and top of the unit are free from
obstructions and debris, and all equipment access/control
panels are in place.
√
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 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
system mode should be set to OFF and the thermostat
fan mode should be set to AUTO.
Start-up Procedure
Close all electrical disconnects to energize the system.
Air Circulation
Leave the thermostat system mode on OFF, and set the fan
mode to ON. Blower should run continuously. Check the air
delivery at the supply registers and adjust register openings
for balanced air distribution. Examine ductwork for leaks or
obstruction if insufficient air is detected. Set the thermostat
fan mode to AUTO. The blower should stop running.
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.
System Cooling
1. Set the thermostat’s system mode to COOL and the fan
mode to AUTO. Gradually lower the thermostats setpoint
below room temperature and verify the outdoor unit and
indoor blower energize.
2. Feel the air being circulated by the indoor blower and verify
that it is cooler than ambient temperature. Listen for any
unusual noises. If unusual sounds occur, determine the
source of the noise and correct as necessary.
3. Allow the cooling system to operate for several minutes
and then set the temperature selector above room
temperature. Verify the fan and compressor cycle off
with the thermostat.
note:
The blower should also stop
unless fan mode is set to ON.
System Heating
If the unit has been equipped with optional electric heater
kits, set the thermostat's system mode to HEAT and the fan
mode to AUTO. Verify the compressor and outdoor fan are
not energized but that the blower and heaters are. Feel the
air being circulated by the indoor blower and verify that it is
warmer than ambient temperature. Listen for any unusual
noises. If unusual sounds occur, determine the source of
the noise and correct as necessary.
air conditioner Maintenance
Warning:
to prevent 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 electrical
supply.
Proper maintenance is important to achieve optimum
performance from the Air Conditioner. The ability to properly
perform maintenance on this equipment requires certain
mechanical skills and tools. If you do not possess these
skills, contact your dealer for maintenance. Consult your
local dealer about the availability of maintenance contracts.
Routine maintenance should include the following:
• Inspect the condensate drain and outdoor coil at the
beginning of each cooling season. Remove any debris.
Clean the outdoor coil and louvers as necessary using a
mild detergent and water. Rinse thoroughly with water.
• Inspect the electrical connections for tightness at the
beginning of each heating and cooling season. Service
as necessary.
• Inspect and clean or replace air filters at the beginning
of each heating and cooling season, or more frequently
if required.
caution:
the unit should never be operated without a
filter in the return air system. replace disposable
filters with the same type and size.
• The motors for the circulating air blower and the outdoor
fan are pre-lubricated at the factory. No further oiling is
required for the life of this product.
kW/H
btu/H
5
17,060
8
27,297
9
30,709
10
34,121
15
51,182
20
68,242
table 5. kW & btu/h ratings
