Air Direction; Air Exchange - Carrier INTERNATIONAL 51QC Owner's Manual

Timer pins are positioned inwards (towards center of
dial) from factory to allow continuous operation.
SETTING THE TIMER FOR
AUTOMATIC ON/OFF OPERATION
To set the timer, simply slide a pin outward from the dial's
center for each hour (approximately) that you wish the
unit to be off.
EXAMPLE: You work days 8-4 and want the unit off
while you are at work, and cooling your room when you
arrive home at 5:00 p.m.
1) Slide the pins beginning at 8:00 a.m. through 3:00
p.m. on the dial, away from the center.
2) Switch the timer to AUTO setting.
Now the unit will automatically turn off at 8:00 a. m. and
start at 4:00 p.m. (an hour before you return home so
that the room where your unit is installed is cool and
refreshing).
You can program the timer similarly for heating
operation.
NOTE: If timer's switch is on MAN, timer setting will be
overridden and the unitwill run continuously.
You may adjust the cooling or heating speed
while unit is on AUTO, without changing
your timer's setting.
The timer can be programmed to turn off and on,
one or more times during 24-hour period.
AIR DIRECTION
Your 51 QC/QG unit has an Auto Air Circulator control I
feature, allowing vertical air deflectors to move automa¬
tically from left to right for better air distribution around
the room. For straightforward air discharge, vertical air
deflectors may be adjusted manually (with air sweep
switch in off position). The horizontal air deflectors are
also adjusted manually.
FAN CYCLE
0O
on- ?
I — Setting lets fan cycle on and off with compressor or
electric heater. Fan stops when thermostat setting
is satisfied. This mode is recommended for max¬
imum comfort during heating operations, to elimi¬
nate circulation of unheated room air by the unit.
When used in cooling, this mode results in longer
off time and wider variations in temperature and
humidity.
O — Setting allows continuous fan function, circulating
air even when compressor or heater has cycled off
and thermostat setting has been reached. This
mode is recommended for maximum comfort
during cooling operations.
AIR EXCHANGE
Exhaust
Your Carrier unit is equipped with vent and exhaust air
exchange systems. Use the following guide when
choosing the appropriate system:
Vent:
Draws outside air into the room.
Exhaust:
Expels stale, smokey or odor laden air from
the room to the outside.
For either system operation, push appropriate button
and turn cooling/heating mode dial to Fan Only setting.
When air exchange is completed, return to normal cool¬
ing or heating by pushing vent or exhaust button again
and rotating mode dial from Fan Only to desired setting.
NOTE: Vent and exhaust usage is not recommended
during cooling or heating as these operations either vent
outside air into the room, or exhaust cooled or heated
air out.
REMEMBER: Button pushed in opens vent or exhaust
system. Button pushed out, closes vent or exhaust
system.
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