Filter
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8
H. Air Distribution Box Installation
1. Remove the two return air grills and filters.
2. Slide the front end of the air box over the shafts of
the thermostat and selector switch. See FIG.13.
FIG. 13
Slide Air Box over Controls
3. Install four screws through legs in air box into the
pre-punched holes in the ceiling template.
4. Install the return air grills and filters by simply push-
ing them into place.
5. Install the two knobs provided on the ends of the
thermostat and selector switch shafts.
6. The power supply to the air conditioner may now be
turned “ON”.
7. Your air conditioner is now installed and ready for
operation. Please read the following instructions be-
fore attempting to run the unit.
OPERATING INSTRUCTIONS
A. Controls
1. The Selector Switch has ten positions including
"OFF". This controls fan speed, heating mode, and
cooling modes. See FIG. 14.
B. Cooling Operation
1. Set the thermostat at the desired temperature level.
2. Select the fan speed that best satisfies your needs:
a. HIGH COOL: Selected when maximum cool-
ing and dehumidification required.
b. MED COOL: Selected when normal or average
cooling required.
c. LOW COOL: Selected when room at desired
comfort level and needs to be maintained.
Normally this speed used for night time opera-
tion.
Note: The blower runs continuously to circulate air and
maintain an even temperature. The compressor will come on
as cooling is required to maintain the selected temperature
level.
C. Fan Operation:
1. This will circulate the air in your RV without cooling
or heating. There are three positions: HIGH FAN,
MED FAN or LOW FAN to select from, depending
upon personal choice. See FIG.14.
D. Heating Operation
NOTE: The heat pump will not replace a furnace for heating
your RV in cold weather. The intent is to warm the coach
during mild winter weather.
1. Turn the selector switch to:
a. High heat
b. Med heat
c. Low heat
2. Set the thermostat to your comfort level.
3. The fan and compressor will come on and begin
heating.
4. When the desired temperature level is reached, the
compressor will cycle as required to maintain se-
lected temperature. The blower will run continuously
to circulate air and maintain an even temperature.
E. "OFF" Position
1. This is to turn Unit off.
G. Customer Maintenance
1. Periodically remove the return air filter located above
the removable panel in the air box. Wash the filter
with soap and warm water, let dry and the reinstall.
Note: Never run the air conditioner without return air filter in
place. This may plug the unit evaporator coil with dirt and may
substantially affect the performance of the unit.
2. Clean air box housing and control panel with a soft
cloth dampened with a mild detergent. Never use
furniture polish or scouring powders.
3. The blower motor is Factory lubricated and requires
no service under normal use.
FAN
LO
LO
HEAT
COOL
OFF
LO
MED
MED
MED
HI
HI
HI
FIG. 14
Selector Switch
2. The thermostat controls the compressor ON/OFF
operation in cooling temperature range of 65° to
90°F. See FIG. 15.
FIG. 15
COOL
WARM
2
3
4
5
6
HEAT PUMP
By DOMETIC
Thermostat
630025.331 Installation Instructions