Reset
If the Comfort Control Center is not operational, inadequate
data or no functions occur, reset the Comfort Control Cen-
ter to factory settings. When a reset procedure is done, all
previous program memory is removed. The factory setting
of 72°F for cooling mode and 68°F for heating modes are
entered.
To initiate a RESET, do the following in the order listed:
1. Turn control on to ensure annunciator data and light
are present. If data and light are present, continue to
next step.
2. Depress
MODE
switch to activate annunciator light.
3. Simultaneously depress the bottom two buttons (tem-
perature
UP
and
DOWN
) and hold.
4. While holding these buttons down, depress the
MODE
button once and release.
5. Release the two buttons previously held down.
6. Depress the
MODE
button once again.
7. At this time the light should extinguish, and the mode
should register “
OFF
”. If not, repeat Steps 2 through 6.
8. Retest system ensuring that all functions are present
and operational.
Section B - Operation, cont’d.
B2. Heat Pump
General Information
The roof-top heat pump was designed to operate in a MILD
GEOGRAPHICAL AREA for heating where the heat loss is
minimal. The heat pump was designed to operate down to
an outside ambient temperature of 40°F. As long as the
temperature remains below 40 degrees, the main furnace
will heat your home. As the outside temperature increases
to 45°F., the outdoor thermostat switches back to the heat
pump circuit.
Note:
Model 59126.501 does not have an outdoor thermo-
stat. When outdoor temperature is at or below 40°F., use
the main furnace to heat your home.
The advantages of the heat pump are:
1. User friendly; only one unit for both heating and cool-
ing;
2. Heat pump heating uses campsite electrical hookup
and saves on trips to refill L.P. tanks;
3. When used in mild climates where the outdoor tem-
perature range is 40 degrees or higher, an LP furnace
is not needed.
The heat pump operates in two different modes; cooling
and heating.
The same mechanism is used for both cycles, but the travel
or flow of refrigerant is reversed to change from cooling to
heating. The items used to accomplish this are a compres-
sor, an inside coil, an outside coil, capillary tube or tubes
(the metering device/s), a series of copper lines (refriger-
ant grade tubing), a reversing valve, an air movement sys-
tem (motor and wheel or blades), and refrigerant (R22).
The Cooling Mode
To cool the air inside a structure, heat is removed from the
inside air and released to the outside air or ambient.
To accomplish this, first air flow is established to pass over
both coils (inside and outside). Next, a refrigerant cycle is
established to cause refrigerant (R22) to flow through both
coils.
The refrigerant cycle starts at the compressor. Its function
is to take the low pressure R22 vapor and discharge it as
high pressure vapor. As the refrigerant (R22) is com-
pressed, it gives off heat causing the discharge line to be
quite warm or hot to the touch in hot weather.
The R22 high pressure vapor leaves the compressor
through the discharge line and enters the reversing valve.
The reversing valve routes the high pressure vapor to the
outside coil. In the cooling mode, the outside coil is a con-
denser coil.
The high pressure R22 vapor enters the outside coil (con-
denser). Here it is cooled and condensed into liquid R22
by passing through the coil. The heat removed from the
refrigerant is expelled to the outside air. The refrigerant
22
72
FIG. B15
Manual
Compliments
of
Northwest
RV
Supply
Printed
From
http://www.nwrvsupply.com
