5
IMPORTANT
THESE PROCEDURES MUST BE FOLLOWED
AT INITIAL START-UP AND AT ANY TIME
POWER HAS BEEN REMOVED FOR 12
HOURS OR LONGER.
TO PREVENT COMPRESSOR DAMAGE
WHICH MAY RESULT FROM THE PRESENCE
OF LIQUID REFRIGERANT IN THE
COMPRESSOR CRANKCASE.
1. MAKE CERTAIN THE ROOM THERMOSTAT IS IN
THE "OFF" POSITION (THE COMPRESSOR IS
NOT TO OPERATE).
2. APPLY POWER BY CLOSING THE SYSTEM
DISCONNECT SWITCH. THIS ENERGIZES THE
COMPRESSOR HEATER WHICH EVAPORATES
THE LIQUID REFRIGERANT IN THE CRANKCASE.
3. ALLOW 4 HOURS OR 60 MINUTES PER POUND
OF REFRIGERANT IN THE SYSTEM AS NOTED
ON THE UNIT RATING PLATE, WHICHEVER IS
GREATER.
4. AFTER PROPERLY ELAPSED TIME, THE
THERMOSTAT MAY BE SET TO OPERATE THE
COMPRSSOR.
5. EXCEPT AS REQUIRED FOR SAFETY WHILE
SERVICING--DO NOT OPEN SYSTEM
DISCONNECT SWITCH.
7961-061
CIRCULATION BLOWER CONTROL
INITIAL START UP
When electrical power is first supplied to the unit, the
low speed blower relay will automatically energize and
the indoor motor will run for one minute. This run in
period will only occur during initial power up or when
the power supply is interrupted.
HEATING OPERATION
One minute after main burner ignition, the circulating
blower will start on low speed. Following termination of
the heating cycle, a two minute delay will keep the
circulating blower running. Any major deviations from
these times should be reported to your service agency.
COOLING OPERATION
Immediately upon a call for cooling, the circulating
blower will be energized on high speed. At the end of the
cooling cycle, the compressor will stop and the circulat-
ing blower will continue to run for one minute.
MAINTENANCE INSTRUCTIONS
The unit should be inspected annually by a qualified
service agency.
Routine inspection and maintenance procedures are the
responsibility of the owner/user and are outlined below.
ROUTINE MAINTENANCE
Air Filters—Check the condition at least monthly when
the unit is in use, and replace (throwaway, fiberglass
type) or clean (permanent, foam type) as necessary.
Reference Figure 2.
Lubrication Requirements—The indoor circulating air
blower motor and outdoor circulating air fan motor are
permanently lubricated and require no re-oiling. The
combustion air blower motor should be re-oiled once a
year with 3-4 drops SAE20 motor oil.
Warning—Turn off electrical power supply to prevent
injury from moving parts or electric shock.
ROUTINE INSPECTION
Inspect the physical support of the unit annually to make
sure it is securely fastened to the building. Also look for
any obvious signs of deterioration.
Inspect the pilot and main burner adjustment at the
beginning of each heating season. Refer to Figure 5 and
Figure 6 for general guidelines. Call qualified service
agency for any adjustments.
Inspect the vent terminal for any obvious deterioration
and to make sure it is free and clear of any obstructions.
REPLACEMENT PARTS
Replacement parts for the gas/electric units are available
through local distributors.
A replacement parts list manual is supplied with each
unit. When ordering parts or making inquiries pertain-
ing to any of the units covered by these instructions, it is
very important to always supply the complete model
number and serial number of the unit. This is necessary
to assure that the correct parts (or an approved alternte
part) are issued to the service agency.
FIGURE 5
