Operating instructions
76
68
0
F
by Dometic
Display delayed 1 minute at turn on.
Actual
Cool
Heat
Set Temperature
COOL
HEAT
OFF
FAN
HIGH
LOW
HIGH
LOW
AUTO
ON
MODE UP DOWN
®
This air conditioner operates a two-stage cooling system.
The first compressor and refrigeration circuit is referred to
as "
Stage 1 CoolingStage 1 Cooling
Stage 1 CoolingStage 1 Cooling
Stage 1 Cooling". The second compressor and refrig-
eration circuit and air system is referred to as "
2nd Stage2nd Stage
2nd Stage2nd Stage
2nd Stage
CoolingCooling
CoolingCooling
Cooling". The first and second stage cooling will operate
as indicated below.
1st Stage Cooling (the first compressor and air sys-1st Stage Cooling (the first compressor and air sys-
1st Stage Cooling (the first compressor and air sys-1st Stage Cooling (the first compressor and air sys-
1st Stage Cooling (the first compressor and air sys-
tem) will operate when:tem) will operate when:
tem) will operate when:tem) will operate when:
tem) will operate when:
The thermostat is calling for cooling.
Power is being supplied by either shoreline or the on-board
generator.
2nd Stage Cooling (the second compressor and air2nd Stage Cooling (the second compressor and air
2nd Stage Cooling (the second compressor and air2nd Stage Cooling (the second compressor and air
2nd Stage Cooling (the second compressor and air
system) will operate whensystem) will operate when
system) will operate whensystem) will operate when
system) will operate when:
The thermostat senses room temperature is two degrees
higher than set point.
The vehicle is being powered by the on-board generator. A
30 amp shoreline by itself will not provide enough power to
operate the 1st and 2nd Stage cooling.
Switching and control of the 1st and 2nd Stage cooling is
automatic. When operating from shoreline, the system
automatically limits operation to 1st Stage cooling only.
When the shoreline is plugged into the on-board generator,
the system automatically allows 1st and 2nd Stage cooling.
However, if powering both systems from the generator and
cooling demand does not required both systems to operate,
Stage 2 will shut down and only Stage 1 will operate.
THERMOSTATTHERMOSTAT
THERMOSTATTHERMOSTAT
THERMOSTAT
HIGH AUTOHIGH AUTO
HIGH AUTOHIGH AUTO
HIGH AUTO: When in the high auto position, the
heat pump blower operates at high speed and
cycles off and on with the compressor.
LOW AUTOLOW AUTO
LOW AUTOLOW AUTO
LOW AUTO: When in low auto position, the heat
pump blower operates at low speed and cycles off
and on with the compressor.
HIGH and LOW ONHIGH and LOW ON
HIGH and LOW ONHIGH and LOW ON
HIGH and LOW ON: When in the high or low
position, the heat pump blower operates continu-
ously. The compressor cycles off and on as
needed.
MOMENTARY SWITCHESMOMENTARY SWITCHES
MOMENTARY SWITCHESMOMENTARY SWITCHES
MOMENTARY SWITCHES: There are three mo-
mentary switches. Momentary switches are acti-
vated by depressing the center of the switch. A
description of these three switches follows:
MODEMODE
MODEMODE
MODE: Depressing this switch advances the dis-
play mode from ACTUAL to COOL, HEAT and
back to ACTUAL. When using this switch, you are
indicating your desire to check or adjust the setpoint
temperatures for cooling or heating. The cool
setting determines the temperature at which the
air conditioner will start to operate. The heat
setting determines the temperature at which the
heating system will start to operate.
UPUP
UPUP
UP: Depressing this switch increases the tem-
perature setpoint.
DOWNDOWN
DOWNDOWN
DOWN: Depressing this switch decreases the
temperature setpoint.
To adjust the setpoint for heating or cooling, press
the MODE button until the arrow on the display
indicates the desired setpoint you wish to change:
COOL or HEAT. The display will indicate the
current setpoint of the thermostat. Press UP or
DOWN to change the setpoint. Once the new
desired setpoint is displayed, press the MODE
button until the arrow is pointing to ACTUAL. If the
thermostat is left in the COOL or the HEAT mode
the display will return to ACTUAL in about three
minutes. After the display returns to ACTUAL, it
takes 15 to 30 seconds for the thermostat to
recognized the changes made to the setpoint.
4F. MODEL 39224.601
AIR CONDITIONER & THERMOSTATAIR CONDITIONER & THERMOSTAT
AIR CONDITIONER & THERMOSTATAIR CONDITIONER & THERMOSTAT
AIR CONDITIONER & THERMOSTAT
This packaged air conditioner contains a dual compressor
refrigeration system. Each compressor is connected to a
separate refrigeration circuit and air system. The system
can be operated with a single compressor when the cooling
requirement is low, or with two compressors when maxi-
mum cooling performance is required.