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INSTALLATION INSTRUCTIONS
12
3.1 GENERAL INFORMATION
3.1.1 THIS UNIT IS DESIGNED FOR:
A. Installation in a recreational vehicle at the time the
vehicle is manufactured.
B. Heating operation in a MILD GEOGRAPHICAL
AREA where the heat loss is minimal.
C. Turning "OFF" the heat pump and switching to
furnace (aux. heat) when the outside tempera-
ture is below 30 degrees Fahrenheit.
D. Returning to heat pump when the temperature
returns to 38 degrees Fahrenheit.
3.1.2 HEAT GAIN/LOSS
The ability of the heat pump/air conditioner to maintain
the desired inside temperature depends on the heat
gain/loss of the RV. Some preventative measures
taken by the occupants of the RV can reduce the heat
gain and improve the performance of the unit. During
extremely high outdoor temperatures, the heat gain of
the vehicle may be reduced by:
A. Parking the RV in a shaded area.
B. Using window shade (blinds and/or curtains)
C. Keeping windows and doors shut or minimizing us-
age.
C. Avoiding the use of heat producing appliances.
Starting the unit early in the morning and giving it a
"head start" on the expected high outdoor ambient
will greatly improve its ability to maintain the de-
sired indoor temperature.
3.1.3 CONDENSATION:
Dometic Corporation will not be responsible for dam-
age caused by condensed moisture on ceilings, walls
or other surfaces. Air contains moisture and this
moisture tends to condense on cold surfaces. When
air enters the RV, condensed moisture may appear on
the ceiling, windows, metal parts, etc.. The unit re-
moves this moisture from the air during normal opera-
tion. Keeping doors and windows closed when the unit
is in operation will minimize condensed moisture on
cold surfaces.
3.1.4 PRECAUTIONS:
A. Read Installation Instructions carefully before
attempting to start your unit installation.
B. Dometic Corporation will not be liable for any
damages or injury incurred due to failure in the
following of these instructions.
C. Installation must comply with the National Elec-
tric Code ANSI/NFPA-70 and CSA Standard
C22.1 (latest edition) and any State or Local
Codes or regulations.
D. DO NOT add any devices or accessories to the
unit except those specifically authorized by
Dometic Corporation.
E. This equipment must be serviced by qualified
personnel and some states require these people
to be licensed.
3.0.0 INSTALLATION INSTRUCTIONS
3.2.0 PROCEDURE
3.2.1 LOCATION
This system is intended for installation in a recreational vehicle
where the interior is essentially one undivided space. (See FIG.
3.1)
FIG. 3.1
POSSIBLE LOCATIONS
A. The unit is to be installed below the floor with DIRECT
access to outside air for the outside coil.
B. The thermostat cable maximum length is twenty-five (25)
feet. Total length of cable used (including thermostat)
for the control system is seventy-five (75) feet maxi-
mum.
C. The unit should be protected as much as possible from
the elements. Do not locate unit where road spray,
rocks, etc. will hit the unit.
Note: The fins of the outside coil should face the exterior
of the vehicle.
3.2.2 OUTSIDE COIL
A. Supply Air
The inlet of the outside coil should be positioned so that
it draws air from outside the vehicle. Special care must
be taken to prevent the discharge air from recircu-
lating to the inlet of the outside coil. If unit is
installed in a compartment, the discharge air must
be open to the outside. The recirculation of con-
denser air within the compartment will cause high
internal operation pressures and tripping of break-
ers will occur. Compartment cannot be sealed.
Shields should be added to ensure fresh air supply. See
FIG. 3.2
FIG. 3.2
Shields Installed To Prevent
Recirculation Of Outside Air.