Dometic 620515.326, 620525.326, 620515.421, 620525.321, 620525.421 Installation Instructions Manual

USA

C

S

SERVICE OFFICE
Dometic Corporation
509 South Poplar Street
LaGrange, IN 46761
260-463-4858

RECORD THIS INFORMATION

FOR FUTURE REFERENCE BEFORE

INSTALLING THE UNIT:

Model Number
Serial Number
Date Purchased
Place of Purchase

MODEL

620515, 620525, 620526

Roof Top Air Conditioner &

630515, 630516

Roof Top Heat Pump

USED WITH

3106615 Air Distribution Box Kit and

TM

3109228.001 Duo-Therm Comfort Control Center

This Unit Is Designed For OEM Installation. All Initial

Installations Must Be Approved By Dometic Corporation

CANADA

Dometic Distribution
866 Langs Drive
Cambridge, Ontario
CANADA N3H 2N7
[phone]

For Service Center
Assistance Call:

800-544-4881

INSTALLATION

INSTRUCTIONS

REVISION

Form No. 3109529.069 1/04
(Replaces 3109529.051)
(French 3109604.060)
©2004 Dometic Corporation
LaGrange, IN 46761

U

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.

Important: These Instructions

must stay with unit.
Owner read carefully.

1

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.

MODELS

620515.321

620515.326

620515.421

620525.321

620525.326

620525.421

620526.321

620526.326

630515.321

630515.326

630515.421

630516.321

630516.326

620515, 620525, 620526, 630515 & 630516 Installation Instructions

SAFETY INSTRUCTIONS

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

A signal word , WARNING OR CAUTION is used
with the safety-alert symbol. They give the level of
risk for potential injury .

WARNING

!

ous situation which, if not avoided, could result in
death or serious injury .

CAUTION

!

ous situation which, if not avoided may result in
minor or moderate injury .

CAUTION

symbol indicates, a potentially hazardous situa­tion which, if not avoided may result in property
damage.

Read and follow all safety information and instruc­tions.

indicates a potentially hazard-

indicates a potentially hazard-

used without the safety alert

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 4.00
inches distance between roof to ceiling of recre­ational vehicle. Alternate installation methods will
allow forroofs more than 4.00 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
usage

4. Avoiding the use of heat producing appliances

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.

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620515, 620525, 620526, 630515 & 630516 Installation Instructions

SPECIFICATIONS

620515.321 620526.321

620515.326 620526.326

620515.421 620525.321 630516.321 630515.321

MODEL NUMBER 620525.421 620525.326 630516.326 630515.421 630515.326

Nominal Capacity (BTU/HR) * 13,500 13,500 15,000 13,500 13,500
Electrical Rating 115 VAC, 60 Hz., 1 PH.
Compressor Rated Load Amps 11.5 12.4 12.0 12.0 12.4
Fan Motor Rated Load Amps 3.1 3.1 3.3 3.1 3.1
Compressor Locked Rotor Amps 50.0 60.0 64.0 50.0 60.0
Fan Motor Locked Rotor Amps 8.8 8.8 8.5 8.8 8.8
SCFM - High Speed Max./Min. 335/250 380/250 335/250
Refrigerant (R22) oz. 17 15.5 21.5 19.5 24.5
Minimum Wire Size ** 12 AWG Copper up to 24 ft.
AC Circuit Protection 20 Amp Time Delay Fuse or
(User Supplied) HACR Circuit Breaker
DC Circuit Protection Installation must comply with all National,
(User Supplied) State, Province and/or Local Electrical Codes
Installed Weight (Pounds) 102 102 104 102 102
Minimum Generator 1 UNIT 3.5 KW
Size *** 2 UNITS 5.0 KW

* Maximum unit performance achieved at full rated voltage.
** For lengths over 24 ft., consult the National Electrical Code.
*** Dometic Corporation gives general guidelines for generator requirements. These guidelines come from experiences people have

had in actual applications. When sizing the generator, the total power usage of your recreational vehicle must be considered. Also
keep in mind generators lose power at high altitudes and from lack of maintenance.

INSTALLATION INSTRUCTIONS

A. Precautions

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. 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. When the vent
is removed, it normally creates a 14-1/4" X 14-1/4"

(±1/8") opening.

FIG. 1

Roof Vent
Opening

2. Other Locations-When no roof vent is available or
another location is desired, the following is recom­mended:
a. For one unit installation: The air conditioner

should be mounted slightly forward of center
(front to back) and centered from side to side.

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620515, 620525, 620526, 630515 & 630516 Installation Instructions

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

1/2 L

L

2/3 L

L

1/3 L

It is preferred that the air conditioner be installed in 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 620515, 620525, 620526, 630515 and 630516 series.

3. After Location Has Been Selected:
a. Check for obstructions in the area where air

conditioner will be installed. See FIG. 3 & 4.

b. The roof must be designed to support 130

poundswhen the RV is in motion. Normally a
200 lb. static load design will meet this require­ment.

FIG. 4

4-1/8”

(±1/8”) OPENING

KEEP THESE AREAS
FREE OF OBSTRUCTIONS

2 7/8

4

4"

7-1/8”

14-1/4" x 14-1/4”

7-1/8”

2 7/8

21-3/8”

Center Line
of Unit

4

4"

REAR
OF
UNIT

12"

+

-

1/8

CAUTION

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 air box obstructions

(i.e. door openings, room dividers, curtains,
ceiling fixtures, etc.) See FIG. 3 & 4.

FIG. 3

9-1/2"

9-1/2"

28-3/4"

28-3/4"

20"

39"

39"

2-1/2"

22"

C. Roof Preparation

1. Opening Requirements - Before preparing the ceil­ing opening, the type of system options must be
decided upon. If a remote sensor is to be used,
provision must be made for it. If the load shed option
is to be used, wires must be run from the load shed
control to the Dometic A/C. If a furnace is to be
connected, wires must be run from the furnace to the
Dometic A/C. 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 115 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.

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