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VIII. OPERATION AND MAINTENANCE
II -
1. Be sure the filter is clean. Inspect every 30
days of operation; if obstructed, clean or
replace filter at once. DO NOT RUN WITH-
OUT A FILTER.
2. Always let the thermostat control the opera-
tion of the system. Never try to "second
guess" the thermostat, or tamPer with it.
Jus[ s_=tthe thermostat at the comfort level
desired AND LEAVE IT ALONE. If it gets
too chilly, just turn the thermostat up a
degree at a time until the desired level is
achieved. Don't turn the thermostat back
and forth.
3. Heat pumps cannot cool off a house as fast
as a furnace heats it. It pulls the tempera-
ture down slowly. Therefore, do not turn on
and expect immediate action. It may take a
day or so to pull down a hot, moist house
when the unit is first installed, especially
after it has been =soaked" in 100-110 °
ambient for days.
4. Keep both the evaporator and condenser
coil surfaces clean. Accumulation ofdirt will
restrict the air flow and reduce the perform-
ance of your unit.
5. Keep condensate drain lines clear and
clean. All blower fan motors are factory
lubricated and require no attention. The
compressor is hermetically sealed, requir-
ing no attention.
6. Your new heat pump is mounted outdoors.
It isgood practice to treat itjust as you would
your automobile if it was exposed to the
elements constantly; an occasional coat of
wax will give added protection against the
elements.
7. Your new heat pump compressor is
equipped with a Permanent Split Capacitor
motor. Therefore, ALWAYS WAIT AT
LEAST THREE MINUTES AFTER SHUT-
TING UNIT OFF BEFORE TRYING TO RE-
START. If the unit is started before the
refrigerant pressures have a chance to bal-
ance, the compressor motor may trip on its
overload, or, in very rare cases, blow a fuse.
Under any normal operation, this will not
happen. It is most likely to happen if a
thermostat is chattering, or if the uoit is
started too quickly. Do not be alarmed ifthis
happens. Just let the pressures balance out
and then start the unit.
.
It is a good practice when there is a power
outage, especially during severe thunder
storms, to switch off yotJr_nit at the thermo-
stat until the electrical power has been per-
manently restored. This could prolong the
life of your compressor.
IMPORTANT - READ CAREFULLY
o Your new heat pump may contain a special
compressorwarming electricalcircuitto keep
the compressorwarm during longoff periods.
Do not be alarmed if this creates a light
"humming" sound while the unit is not
running. The "hum"may or may not occur.
Whenever the power has been discon-
nected from the unit for longer than twelve
hours, be sure to turn the power"back on
twelve hours before starting the unit. This
will give the compressor warming circuit a
chance to operate and protect the compres-
sor from damage.
HOW TO GET THE MAXIMUM PLEASURE
FROM YOUR HEAT PUMP
In order that you may fully enjoy the comfort
your Heat Pump can bring you, an understand-
ing of the basic principles involved are outlined
in the following paragraphs.
HEATING LOAD
The air temperature rise through a heat pump
on the heating cycle is not as great as that
through a fuel fired furnace. The supply air
coming into the room may be only 12 to 26,
degrees warmer than the room air. Therefore
"hot and cold" spots are not evident in Heat
Pump installations as they are in fuel fired
heating systems.