Carrier 51QC/QG - Manual (Page 7)

IMPOFTTANT FACTS ABOUT
.^EAT PUMP OPERATIONS
C)perating Sounds: A momentary ‘whooshing’ sound is
normai when unit is switched over to the heating mode.
Auto Coil Defrost: Low outside temperature and high
humidity can combine to cause ice buiid-up on the
butside coii when your unit is set on heat mode, in such
an instance, the unit automaticaiiy switches to a defrost
cycie, shutting its compressor off. A buiit-in eiectric
heater wiii continue to heat your room during the defrost
cycie. After defrosting is compieted, the unit automat­
icaiiy switches back to heat pump operation.
Drain Valve: Your unit has a thermostatically operated
drain valve located in its basepan. Valve remains closed
in warm weather, channeling condensate to outdoor
coil to increase cooling efficiency. In cooler weather
(50°F or lower), valve automatically opens, draining
condensate and preventing possible ice build-up in
basepan.
Electric Heater: Should outdoor temperatures drop to
35°F or lower, the unit’s compressor automatically shuts
off and electric heater will take over the heating process.
In such a case, the unit’s thermostat maintains the
comfort setting and room temperature you desire by
turning heater and fan on and off as needed.
Compressor Override/Low-Temp Control: Control is
located at the top right corner of air discharge.
Normal Heat Pump:
Control knob must line up with “Normal” position on
label: This allows the electric heater to take over the
heating process from the compressor during heat
pump operation at an outdoor temperature of 35°F.
Electric Heat:
To have the electric heater take over the heating
process at an outdoor temperature above the factory
preset 35°F, the control knob can be set closer toward
the “Electric Heat” position on label until desired
setting is reached (see note).
NOTE: Override Feature: If compressor fails during
cold weather, turn control knob counterclockwise to
“Electric Heat” position to activate electric heater
while awaiting service.
ECONOMIC ENERGY
SAVING TIPS
Select thermostat setting that suits your comfort needs
and leave thermostat at that chosen setting.
Keep unit’s filter clean. Normally filter should be cleaned
every 30 days. Filter is very efficient in removing airborne
particles. More frequent cleaning may be necessary
depending on outside and inside air quality. To remove
filter: grasp filter tab at bottom of front grille and pull
down and out. Filter may be vacuumed or washed by
hand in warm water. Dry thoroughly and replace filter by
sliding it upward behind front grille.
Use drapes, curtains, shades et. al. to keep direct sun­
light from heating room.
Do not obstruct front of unit.
Use built-in timer to turn unit on just before you return,
rather than running unit while you are out.
When outdoor temperatures are cool enough, use fan
control in conjunction with vent control to bring cool
outside air into room. This utilizes much less electricity.
REMEMBER: Maximum cooling and heating efficiency
is achieved when vent and exhaust systems are off.
Check to make sure vent and exhaust controls are not
on while unit is cooling room.
Even without above tips, your Carrier unit is designed to
be highly efficient in energy savings!
TOOLS YOU WILL NEED FOR
INSTALLATION
Through-the-Wall Installation:
Construction and masonry tools needed for through-
the-wall installation.
I>crewdrivers—Both Phillips and regular head types
Power drill (1 /8" dia. drill bit)
Pencil
Measuring Tape
Scissors or a razor-edged knife