Dometic 3253.332 Installation & Operating Instructions Manual

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Dometic Corporation
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Contact:
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Type 3253.332 Installation and Operating Instructions

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

MODEL B3200

Roof-Top Air Conditioner

used with

Mechanical Air Distribution Box

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.

INST ALLA TION & OPERA TING

INSTRUCTIONS

TYPE

3253.332

Air Conditioner

REVISION:

Form No. 3310070.010 4/06
(Replaces 3310070.000)
©2006 Dometic Corporation
LaGrange, IN 46761

Important: These Instructions

must stay with unit.
Owner read carefully.

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Type 3253.332 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

GENERAL INSTRUCTIONS

A. Product features or specifications as described or illus-

trated are subject to change without notice.
The following are the basic requirements:

1. Installation opening. Cut through the roof and ceil­ing.

2. Additional Wiring.
220-240 VAC, 50 Hz. 10 Amp.

3. Power with the air conditioner on must be above 209
VAC and the frequency must be at 50 HZ. at all
times.

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

40.6 cm centers.

4. Minimum of 5 cm and maximum of 10 cm distance
between roof to ceiling of recreational vehicle. Alter­nate installation methods will allow for roofs more
than 10 cm thick.

C. The ability of the air conditioner to maintain the desired

inside temperature depends on the heat gain of the
Caravan.
Some preventative measures taken by the occupants of
the Caravan 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 Caravan 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 Dometic 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.

Read and follow all safety information and instruc­tions.

2

Type 3253.332 Installation and Operating Instructions

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 Caravan, 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.

SPECIFICATIONS

Type 3253.332 Electric

Nominal Capacity (KW) 3.2 1.6

Electrical Rating 220 - 240 VAC 50 Hz. 1Ph.

FL Amps (Comp/Motor) 5.2/1.6 6.3/1.6

LR Amps (Comp/Motor) 26/4.4 --/4.4

Power (KW) 1.3 1.9

Min. Wire Size Up to 8 meters, use 1.5mm

Circuit Protection 10 Amp Time Delay Fuse or

Air Cond Heater

2

Copper

10 Amp Circuit Breaker

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 localities 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 (Caravan). When
determining your cooling requirements, the following
should be considered:

• Size of Caravan;

• Window area (increases heat gain);

• Amount of insulation in walls and roof;

• Geographical location where the Caravan 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 35.5 cm x 35.5 cm

opening. See FIG. 1.

FIG. 1

Generator Size

1 Unit 3.5 KW
2 Units 5.0 KW

The Manufacturer gives only general guidelines for Generator
requirements. These Generator requirements come from
experiences consumers have with our equipment in field
applications. When sizing Generators, the total electrical
power consumption of the caravan must be considered. Keep
in mind that Generators lose power because of altitude
increase above sea level, high outside temperatures and 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. The equipment shall be installed in accordance with
nation wiring regulation per ICE 335-2-40, 7.12.1.In­stallation must comply with applicable codes or
regulations.

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 the center (front to back ) and cen­tered from side to side on the Caravan. See FIG.

2.

FIG. 2

1/2L

L

2/3L

L

1/3L

L = Length

b. For two unit installations:

Install one air conditioner 1/3 and the other 2/3's
back from the front of the caravan and centered
from side to side. See FIG. 2.

3