Operating Instructions; Controls; Off" Position; Cooling Operation - Dometic 457915 Installation & Operating Instructions Manual

OPERATING INSTRUCTIONS

A.

Controls

1. The Selector Switch has (8) positions including
"OFF". This controls fan speed, optional heating
mode, and cooling modes. See (FIG. 24).
FIG. 24
Blue Graphic
Cooling
2. The Thermostat controls the temperature range
at the filter between approximately 65° F and
90° F.
B.

"OFF" Position

1. This is to turn unit off.
C.

Cooling Operation

1. Set the thermostat at the desired temperture
level.
2. Select the fan speed that best satisifies your
needs:
a. HIGH COOL: Selected when maximun cool-
ing and dehumidification required.
b. MED. COOL: Selected when normal or aver-
age cooling required.
c. LOW COOL: Selected when room is at de-
sired comfort level and needs to be main-
tained. Normally this speed used for night
time operation.
 T he blower runs continuously to circulate
air and maintain an even temperature.
The compressor will come on as cooling
is required to maintain the selected tem-
perature level.
 Wait at least 2 minutes before
restarting the compressor when it has been
manually cycled off with either the selector
switch or the temperature set lever. Other-
wise, compressor will quick-cycle and could
result in compressor or supply circuit over-
load.
Black
Graphic Fan
Colder
D. Heating Operation (With Electric Heater
Option Installed).
 T he heat mode of operation will NOT replace
a furnace for heating your RV in cold weath-
er. The intent is to remove the chill on cool
days or mornings.
1. Turn the selector switch to "OPT HEAT".
2. The heat strip will come on and begin heating.
3. When desired temperature level in RV is
reached, move the selector switch to "OFF" po-
sition or "FAN" position.
 T hermostat does NOT control the fan/heater
ON/OFF cycle.
E.

Fan Operation

1. This will circulate the air in your RV without cool-
ing or hating. There are three positions: HIGH
FAN, MED. FAN or LOW FAN to select from de-
pending upon personal choice.
F.

Center Air Discharge

1. Slide lever to open and close.
FIG. 25
12
Slide To Open
Or Close