Dometic B3351.531, B3300 Series Installation & Operating Instructions Manual

INSTALLATION AND OPERATING INSTRUCTIONS

RECORD THIS UNIT INFORMATION FOR
FUTURE REFERENCE:
Model Number
Serial Number
Date Purchased

B3300 Series

Roof Top Air Conditioner

Used With

Mechanical Air Distribution Box Kit

3309278.004

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.

INSTALLATION & OPERATING

INSTRUCTIONS

TYPE

B3351.531

REVISION:

Form No. 3308925.019 7/05
(Replaces 3308925.001)

©2005 Dometic Corporation
LaGrange, IN 46761

Important: These instructions must stay with

unit. Owner read carefully.

1

INSTALLATION AND OPERATING 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.

indicates a potentially hazard-

indicates a potentially hazard-

used without the safety alert

Read and follow all safety information and instruc­tions.

2

INSTALLATION AND OPERATING INSTRUCTIONS

SPECIFICATIONS

TYPE NOMINAL ELECTRICAL COMPRESSOR COMPRESSOR FAN MOTOR FAN MOTOR REFRIGERANT HEATER AMPS
NO. CAPA CI TY RATING RATED LOAD LOCKED RATED LOAD LOCKED R-22 A T

WATTS KW ROTOR KW ROTOR GRAMS/OZ 220 / 240 VAC
COOLING KW KW

B3351.531 3,245 1.1 / 1.2 4.5 / 5.0 0.21 0.46 510/18.0 1.64

220 / 240 VAC,
50 HZ., 1PH.

GENERAL INFORMATION

A. This air conditioner is designed for:

1. Installation on a recreational vehicle during or after
the time the vehicle is manufactured.

2. Mounting on the roof of a recreational vehicle.

3. Roof construction with rafters/joists on minimum of
400mm centers.

4. Minimum of 25mm and maximum of 100mm dis­tance between roof to ceiling of recreational vehicle.
Alternate installation methods will allow for roofs
more than 100mm thick.

B. 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 cur tains)

3. Keeping windows and doors shut or minimizing
usage

4. Avoiding the use of heat producing appli ances.

5. Operation on High Fan/Cooling mode will give opti­mum or maximum efficiency in high humidity or high
outside temperature.

6. 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.

7. For a more permanent solution to a high heat gain,
accessories like outdoor patio and window awnings
will reduce heat gain by removing the direct expo­sure to the sun. They also add a nice area to enjoy
company during the cool of the evening.

C. 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.

3

INSTALLATION AND OPERATING INSTRUCTIONS

INSTALLATION INSTRUCTIONS

PRECAUTIONS

WARNING

!

2. For two unit installations: Install one air conditioners
1/3 and one air conditioner 2/3's from front of RV and
centered from side to side. See FIG. 2.

Improper installation may damage equip­ment, could endanger life, cause serious
injury and/or property damage.

A. Read installation and operating instructions carefully

before attempting to start your air conditioner installa­tion.

B. Dometic Corporation will not be liable for any damages

or injury incurred due to failure in following these instruc­tions.

C. Installation must comply with the National Electrical

Code and any Region or Local Codes or regulations.

D. DO NOT add any devices or accessories to this air

conditioner except those specifically authorized by
Dometic.

E. This equipment must be serviced by qualified personnel

and some regions require these people to be licensed.

CHOOSING LOCATION FOR THE

AIR CONDITIONER

This air conditioner is specifically designed for installation on
the roof of a recreational vehicle (RV).

CAUTION

FIG. 2

L

2/3 L

1/3 L

It is preferred that this air conditioner be installed in a
relatively flat and level roof section measured with the RV
parked on a level surface; however, up to 15
either side, or front-to-back, is acceptable.

C. AFTER LOCATION SELECTION:

1. Check for obstructions in the area where air condi­tioner will be installed. See FIG. 4.

2. The roof must be designed to support 60 Kg. when
the RV is in motion. Normally a 90 Kg. static load
design will meet this requirement.

c. Check inside the RV for air box obstructions. (i.e.

door openings, room dividers, curtains, ceiling fix­tures, etc.) See FIG. 3.

o

slant to

It is the responsibility of the installer of this
air conditioner/heat pump 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/heat pump may leak into the interior
causing damage to the product and the RV.

A. NORMAL LOCATIONS:

The air conditioner is designed to fit over an existing roof
vent opening. When the vent is removed, it normally
creates a 360mm x 360mm opening.

B. OTHER LOCATIONS:

When no roof vent is available or another location is
desired, the following is recommended:

1. For one unit installation: The air conditioner should
be mounted slightly forward of center (front to back)
and centered from side to side. See FIG. 1.

FIG. 1

1/2 L

L

FIG. 3

325mm

60mm

871mm

570mm

750mm

510mm

4