60
Section D - Configuration
Ducted Installations
Short cycle could be caused by air being circulated directly
on the remote sensor. Make sure you do not have a regis-
ter too close to the remote sensor. Verify the duct connec-
tion at the unit is not leaking into the return air. Seal all
problem areas.
C22j. Air Flow Obstruction
The coils and filters must be kept clean. Obstructions re-
duce the amount of air passing through the coils. Dirt acts
as an insulator reducing the heat transfer across the fins.
Turn the air conditioner circuit breaker to OFF. Brush the
fins with a soft bristle brush, and vacuum up the residue.
The filters should be cleaned in a soap solution and rinsed
in clean water. Air-dry the filters before reinstalling; a wet
filter can cause insufficient cooling or freeze-up. Air flow
obstructions can occur on the outside coil as well. Lint, dust
and other small particles can block air flow. The outside
coil should be cleaned annually or as needed with a com-
mercial grade coil cleaner.
C23. Roof Gasket
The unit must be installed on a roof which allows water to
drain away. Check the roof around the unit to make sure
the water will drain away. If in doubt, stretch a string across
the top of the RV. If the string shows a low spot in the area
of the unit it must be corrected. See FIG. C69.
Check mounting gasket for any damages (such as tear-
ing). Check for foreign material (screws, wood chips, metal
shavings, etc.), compressed or trapped material under the
gasket. Replace with a new gasket if found.
When attaching the unit to the roof, tighten the mounting
bolts only enough to compress the roof gasket 1/2 inch.
Overtightening of the unit can cause the base pan to bend
and allow water under the drain pan. See Section C22g on
page 59. Once the gasket has been installed or tightened,
it will retain its shape. It is advisable to replace the gasket
when the unit is removed from the roof for any reason. See
FIG. C70.
D. Configuration
The Comfort Control Center configuration relates to set-
ting the Dip switches and particular components (remote
temperature sensor, cold [freeze] control and ambient sen-
sor) that can be plugged into the AC power module board
according to the type of unit and accessories included.
Note:
If the configuration of the Dip switches and plug-in
components are not correct, the air conditioner or heat
pump could operate erratically or not operate at all.
Improper configuration could cause damage
to components of the system.
We recommend the configuration be done at the time of
installation by the installer.
To check the configuration, first locate the Electronic Con-
trol Kit on roof-mounted units or the Electronic Control Box
on basement mounted units. Next remove any cover or
covers for access to Dip switches and Sensor Plugs (P3,
P4 and P5). Both are located on the AC Power Module
Board. All Dip switches are in the “OFF” position at the
time of manufacture of the appliance.
Note:
The only exceptions are Models 620315.XXX,
39424.XXX and 39224.XXX.
FIG. D1
FIG. D2
FIG. C69
FIG. C70
If the configuration is not correct, turn Comfort Control Cen-
ter OFF before changing the configuration.
Manual
Compliments
of
Northwest
RV
Supply
Printed
From
http://www.nwrvsupply.com
