Startup, Adjustments, And Checks; Cooling Start -U P Procedures; Heat Pump Start -U P Procedure; Final System Checks - Goodman PC Installation Instructions Manual

STARTUP, ADJUSTMENTS, AND CHECKS

C S -U P
OOLING TART P ROCEDURES
With power turned off at all disconnects:
1. Turn thermostat system switch to "COOL" and fan switch
to "AUTO". Next, turn the temperature setting as high as it
will go.
2. Inspect all registers and set them to the normal open
position.
3. Turn on the electrical supply at the disconnect.
4. Turn the fan switch to the "ON" position. The blower should
begin ramping up immediately.
5. Turn the fan switch to "AUTO" position. The blower should
begin ramping down after an approximate 60-second
delay.
6. Slowly lower the cooling temperature until the unit starts.
The compressor, blower and fan should now be operating.
Allow the unit to run 10 minutes, make sure cool air is
being supplied by the unit.
7. Turn the temperature setting to the highest position,
stopping the unit. The indoor blower will continue to run
for approximately 60-seconds.
8. Turn the thermostat system switch to "OFF" and disconnect
all power when servicing the unit.
H P S -U P
EAT UMP TART P ROCEDURE
1. Check the cooling mode for the heat pump in the same
manner as above. The reversing valve is energized when
the thermostat is placed in the cooling position. A clicking
sound should be noticeable from the reversing valve. By
lowering the temperature setting to call for cooling, the
contractor is energized. The compressor, blower and fan
should then be running. After the cooling mode is checked
out, turn the thermostat system switch to "OFF".
2. Turn the thermostat system switch to "HEAT" and fan switch
to "AUTO".
3. Slowly raise the heating temperature setting. When the
heating first stage makes contact, stop raising the
temperature setting.. The compressor, blower and fan
should now be running with the reversing valve in the de-
energized (heating) position. After giving the unit time to
settle out, make sure the unit is supplying heated air.
4. If the outdoor ambient is above 80°F, the unit may trip on
its high pressure cut out when on heating. The compressor
should stop. The heating cycle must be thoroughly
checked, so postpone the test to another day when
conditions are more suitable. DO NOT FAIL TO TEST.
5. If the outdoor ambient is low and the unit operates properly
on the heating cycle, you may check the pressure cutout
operation by blocking off the indoor return air until the unit
trips.
6. If unit operates properly in the heating cycle, raise the
temperature setting until the heating second stage makes
contact. Supplemental resistance heat, if installed should
now come on. Ensure all heaters energize.
NOTE: *PH1542-60 have two stages of compressor heat.
During resistance heat test, increase temperature setting
until third stage heat is energized.
If outdoor thermostats are installed, the outdoor ambient
must be below the set point of these thermostats for the
heaters to operate. It may be necessary to jumper these
thermostats to check heater operation if outdoor ambient
is mild.
7. THERMOSTATS WITH EMERGENCY HEAT. For thermostats
with an emergency heat switch, raise the temperature
setting until the heating second stage makes contact. The
emergency heat switch is located at the bottom of the
thermostat. Move the switch to emergency heat. The heat
pump will stop, the blower will continue to run, all heaters
will come on and the thermostat emergency heat light will
come on.
8. If checking the unit in the wintertime, when the outdoor coil
is cold enough to actuate the defrost control, observe at
least one defrost cycle to make sure the unit defrosts
completely.
F S C
INAL YSTEM HECKS
1. Ensure all supply and return air grilles are adjusted and
the air distribution system is balanced for the best
compromise between heating and cooling.
2. Ensure there are no air leaks in the duct work.
3. Check air flow and refrigerant charge. See Sections on
Air Flow Measurement and Adjustment and Checking
Charge.
4. Ensure the unit is free of "rattles", and the tubing in the unit
is free from excessive vibration. The tubes or lines should
not rub against sheet metal surfaces, edges or each other.
5. Ensure the Owner is instructed on the unit operation, filter,
servicing, correct thermostat operation, etc.
Set the thermostat at the appropriate setting for cooling and
heating or automatic changeover for normal use.
NOTE: The "Cooling Start-up Procedure" is a recommended
step as it serves as an system indicator that the unit will operate
normally.

COMPONENTS

Contactor

This control is activated (closed) by the room thermostat for
both heating and cooling. The contactor has a 24V coil and
supplies power to the compressor and outdoor fan motor.

Crankcase Heater

This item is "ON" whenever power is supplied to the unit and
the crankcase heater thermostat is closed. Crankcase heater
thermostat closes at 67° and opens at 85°. It warms the
compressor crankcase thereby preventing liquid migration
and subsequent compressor damage. The insert type heater
is self regulating. It is connected electrically to the contactor
L1 and L2 terminals.

Condenser Motor

This item is activated by the contactor during heating and
cooling, except during defrost and emergency heat operation.
On 460V heat pumps, the condenser motor is activated by the
CMR.
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