RECORD THIS UNIT INFORMATION FOR
FUTURE REFERENCE:
Model Number
Serial Number
Date Purchased
MODEL
620515, 620525, 620526
Roof-Top Air Conditioner
630515, 630516
Roof T op Heat Pump
USA
SERVICE OFFICE
Dometic Corporation
2320 Industrial Parkway
Elkhart, IN 46515
574-294-2511
CANADA
Dometic Distribution
866 Langs Drive
Cambridge, Ontario
CANADA N3H 2N7
519-653-4390
For Service Center
Assistance Call:
800-544-4881
U
used with one of following:
3105007 Return Air Cover
3105935 Quick Cool Return Air Cover
3308120 Genesis Air Filtration System
and
3109228.001 Comfort Control Center
THIS UNIT IS DESIGNED FOR OEM INSTALLATION
ALL INITIAL INSTALLATIONS MUST BE APPROVED BY THE SALES DEPT.
This manual must be read and understood before installation, adjustment, service, or maintenance
is performed. This unit must be installed by a qualified service technician. Modification of this product
can be extremely hazardous and
could result in personal injury or
property damage.
Lire et comprendre ce manuel avant de
procéder à l'installation, à des réglages,
de l'entretien ou des réparations.
L'installation de cet appareil doit être
effectuée par un réparateur qualifié.
Toute modification de cet appareil peut
être extrêmement dangereuse et
entraîner des blessures ou dommages
matériels.
This manual has safety information and instructions to help users eliminate or reduce the risk of
accidents and injuries.
RECOGNIZE SAFETY INFORMATION
!
This is the safety-alert symbol. When you see this
symbol in this manual, be alert to the potential for
personal injury .
Follow recommended precautions and safe operating instructions.
UNDERSTAND SIGNAL WORDS
GENERAL INFORMATION
A. Product features or specifications as described or illus-
trated are subject to change without notice.
B. This Air Conditioner Is Designed For:
1. Installation on a recreational vehicle during the time
the vehicle is manufactured.
2. Mounting on the roof of a recreational vehicle.
3. Roof construction with rafters/joists on minimum of
16 inch centers.
4. Minimum of 2.00 inches and maximum of 5.50
inches distance between roof to ceiling of recreational vehicle. Alternate installation methods will
allow forroofs more than 5.50 inches thick.
C. The ability of the air conditioner to maintain the desired
inside temperature depends on the heat gain of the RV.
Some preventative measures taken by the occupants of
the RV can reduce the heat gain and improve the
performance of the air conditioner. During extremely
high outdoor temperatures, the heat gain of the vehicle
may be reduced by:
1. Parking the RV in a shaded area
2. Using window shades (blinds and/or curtains)
3. Keeping windows and doors shut or minimizing us
age
4. Avoiding the use of heat producing appliances
A signal word , WARNING OR CAUTION is used
with the safety-alert symbol. They give the level of
risk for potential injury .
WARNING
!
indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury .
CAUTION
!
indicates a potentially hazardous situation which, if not avoided may result in
minor or moderate injury .
CAUTION
used without the safety alert
symbol indicates, a potentially hazardous situation which, if not avoided may result in property
damage.
Read and follow all safety information and instructions.
Operation on High Fan/Cooling mode will give optimum or
maximum efficiency in high humidity or high outside temperatures.
Starting the air conditioner early in the morning and giving it
a "head start" on the expected high outdoor ambient will
greatly improve its ability to maintain the desired indoor
temperature.
For a more permanent solution to high heat gain, accessories like A&E outdoor patio and window awnings will reduce
heat gain by removing the direct sun. They also add a nice
area to enjoy company during the cool of the evening.
D. Condensation
Note: The manufacturer of this air conditioner will not be
responsible for damage caused by condensed moisture on
ceilings 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 air conditioner removes this moisture from the air during normal operation.
Keeping doors and windows closed when this air conditioner
is in operation will minimize condensed moisture on cold
surfaces.
When sizing the generator, the total power usage of your recreational vehicle must be considered. Keep in mind generators lose power at high altitudes
an dfrom lack of maintenance.
*For wire length over 24 ft., consult the National Electric Code for proper sizing.
**Dometic Corporation gives GENERAL guidelines for generator requirements. These guidelines come from experiences people have had in actual applications.
*** CIRCUIT PROTECTION: Time Delay Fuse or HACR Circuit Breakers Required.
Improper installation may damage equipment,
could endanger life, cause serious injury and/
or property damage.
1. Read Installation and Operating Instructions carefully before attempting to start your air conditioner
installation.
2. Dometic Corporation will not be liable for any damages or injury incurred due to failure in following
these instructions.
3. Installation must comply with the National Electrical
Code ANSI/NFPA-70 and CSA Standard C22.1
(latest edition and any State or Local Codes or
regulations.
4. DO NOT add any devices or accessories to this air
conditioner except those specifically authorized by
Dometic.
5. This equipment must be serviced by qualified personnel and some states require these people to be
licensed.
b. For two unit installations: Install one Air Condi-
tioner 1/3 and one Air Conditioner 2/3’s from
front of RV and centered from side to side.
FIG. 2
1/2L
L
2/3L
L
1/3L
It is preferred that the air conditioner be installed on
a relatively flat and level roof section measured
with the RV parked on a level surface.
Note: A 8° slant to either side, or front to back, is acceptable
for all units.
3. After Location Has Been Selected:
a. Check for obstructions in the area where air
conditioner will be installed. See FIG. 4.
b. The roof must be designed to support 130
pounds when the RV is in motion. Normally a
200 lb. static load design will meet this requirement.
B. Choosing Proper Location For The Air
Conditioner
This air conditioner is specifically designed for installation on
the roof of a recreational vehicle (RV). When determining your
cooling requirements, the following should be considered:
•Size of RV;
•Window area (increases heat gain);
•Amount of insulation in walls and roof;
•Geographical location where the RV will be used;
•Personal comfort level required.
1. Normal Location-The air conditioner is designed to
fit over an existing roof vent opening.
FIG. 1
2. Other Locations-When no roof vent is available or
another location is desired, the following is recom-
mended:
a. For one unit installation: The air conditioner
should be mounted slightly forward of center
(front to back) and centered from side to side.
It is the responsibility of the installer of this
air conditioner system to ensure structural integrity of the RV roof. Never create a low spot
on the roof where water will collect. Water
standing around the air conditioner may leak
into the interior causing damage to the product and the RV.
c. Check inside the RV for return air kit obstruc-
tions (i.e. door openings, room dividers, curtains, ceiling fixtures, etc.) See FIG. 3 & 4.
1. Opening Requirements - Before preparing the ceiling opening, the type of system options must be
decided upon. Read all of the following instructions
before beginning the installation.
If a roof vent opening will not be used a 14-1/4" x 141/4" (±1/8") opening must be cut through the roof and
ceiling of the RV. This opening must be located
between the roof reinforcing members.
There may be electrical wiring between the
roof and the ceiling. Disconnect 120 volt AC
power cord and the positive (+) 12 volt DC terminal at the supply battery. Failure to follow
this instruction may create a shock hazard
causing death or severe personal injury.
The 14-1/4" x 14-1/4" (±1/8") opening is part of the
return air system of the Air Conditioner and must be
finished in accordance with NFPA Standard 501C
Section 2.7.2.
2.Roof Vent Removal
a. Unscrew and remove the roof vent.
b. Remove all caulking compound around open-
ing.
c. Seal all screw holes and seams where the roof
gasket is located. Use a good grade of all
weather sealant. See FIG. 5.
FIG. 5
d. If the opening exceeds 14-3/8" x 14-3/8", it will
be necessary to re-size the opening to 14-1/4"
x 14-1/4" (±1/8").
e. If the opening is less than 14-1/8" x 14-1/8", it
must be enlarged.
3. New Opening- (Installation Other Than Vent Opening)
a. Mark a 14-1/4" x 14-1/4" (±1/8") square on the
roof and carefully cut the opening.
b. Using the roof opening as a guide, cut the
matching hole in the ceiling.
c. The opening created must be framed to provide
adequate support and prevent air from being
drawn from the roof cavity. Lumber 3/4" or more
in thickness must be used. Remember to provide an entrance hole for power supplies, furnace wiring and a seven-conductor cable, 18 to
22 AWG is to be used for analog thermostat
connections.
FIG. 6
Do Not Cut
Roof Structure
Or Rafters
3/4" Min.
Good-Rafters
Supported By
Cross Beams
Frame Opening So It
Good LocationBetween Roof
Rafters
Won't Collapse When
Bolting Down Unit
15" Min. At
Leave Access For Power
Supply Wiring
Front Of
Opening
It is the responsibility of the installer of this
air conditioner system to ensure structural
integrity of the RV roof. Never create a low
spot on the roof where water will collect. Water standing around the air conditioner may
leak into the interior causing damage to the
product and the RV.
5
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