COMPRESSOR TRANSFORMER
CONTACTOR
O O
O
o
O O
ELECTRIC GROUND INDOOR OUTDOOR FAN MOTOR HIGH
HEATER LUG FAN AND COMPRESSOR VOLTAGE
FUSES RELAY START CAPACITOR LEADS
C00011
Fig. 12--Control Box Wiring
d. Inspect coil fins. If damaged during shipping and handling, carefully straighten fins with a fin comb.
3. Verify the %llowing conditions:
a Make sm'e that outdoor-tM_ blade is CO,Teeth positioned in fhn orifice Top edge of blade should be 3125 in down t'rom outdoor coil
outlet grille (size 024 048, See Fig. 21) or hub should be 0.70%in. away fi'om motor end bell (size 060, See Fig. 22). See Outdoor Fan
Adjustment section.
b. Make sure that air filter is in place.
c. Make sure that condensate &ain trap is filled with water to ensure proper drainage.
d. Make sure that all tools and miscellaneous loose parts have been removed.
START-UP
Use the Start=L p Checklist supplied at the end of this book and proceed as follows:
PROCEDURE I--CHECK FOR REFRIGERANT LEAKS
A. LOCATE AND REPAIR REFRIGERANT LEAKS AND CHARGE THE UNIT AS FOLLOWS:
1, Lsing both high- and tow-pressm'e ports, locate leaks and reclaim remaining refi'igerant to relieve system pressure,
2, Repair 1oak %ltowing accepted practices,
NOTE: Install a liquid=line filter &ie* whenever the system has been opened for repair
PROCEDURE 2--START-UP COOLING SECTION AND MAKE ADJUSTMENTS
Z_X CAUTION: Complete the required procedures given in the PreoStart- Up section this page before starting the unit, Do
not jumper any safety devices when operating the unit.
Do not operate the compressor when the outdoor temperature is below 40 F,
Do not rapid-cycle the compressor. Allow 5 minutes between "on" cycles to prevent compressor damage.
A. CHECKING COOLING CONTROL OPERATION
Start and check the unit %r proper cooling control operation as %llows:
1. Place room thermostat SYSTEM switch in OFF position Obsmwe that blower motor starts when FAN" switch is placed in ON position and
shuts down within 30 seeconds when FAN switch is placed in AUTO position
2. Place SYSTEM switch in COOL position and FAN switch in AUTO position. Set cooling control below room temperature Observe that
compressor, outdoor tim,and indoor blower motors start and that reversing valve shifts. Observe that cooling cycle shuts down when contloi
setting is satisfied. Reversing valve (RV) remains energized.
3. Place system switch in HEAT position. Observe that compressor, indoor tMa and outdoor fire energize (Reversing Valve is deenergized in
heat pump heating mode). Set control above room temperature. Observe that heating cycle shuts down when control setting is satisfied.
12
To Next Page
Loading...
