Dometic B3300 Installation & Operating Instructions Manual
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Model Number
Serial Number
ADB Model Number
ADB Serial Number
Date Purchased
DuraSea Roof Top Air Conditioner
Roof Top Unit
Description Model Type Use With Air Distribution Box (not included)
Model Control
Air Conditioner B3300 3341P 3309278.004 Integral Mechanical
INSTALLATION & OPERATING
INSTRUCTIONS
Form No. 3314452.000 7/12
©2012 Dometic, LLC
LaGrange, IN 46761
TYPE
3341P701
Read these instructions carefully. These
instructions MUST stay with this product.
INTRODUCTION
This air conditioner (hereinafter referred to as “unit,” or “product”) is designed and intended for installation on the roof of a
boat during or after the time the vessel is manufactured.
This unit can be installed by one person with brief help from additional personnel. Use the following procedure to ensure a
properly installed, and properly functioning product.
Dometic, LLC reserves the right to modify appearances and specications without notice.
TABLE OF CONTENTS
INTRODUCTION .................................................................................................................................................................... 2
DOCUMENT SYMBOLS ........................................................................................................................................................3
IMPORTANT SAFETY INSTRUCTIONS ................................................................................................................................ 3
A. Recognize Safety Information ...................................................................................................................................3
B. Understand Signal Words ..........................................................................................................................................3
C. Supplemental Directives ............................................................................................................................................3
D. General Safety Messages .........................................................................................................................................3
SPECIFICATIONS .................................................................................................................................................................. 4
A. Table - Unit Data ....................................................................................................................................................... 4
B. Power Requirements ................................................................................................................................................. 4
C. Roof Requirements ....................................................................................................................................................4
INSTALLATION INSTRUCTIONS ..........................................................................................................................................5
A. Choosing Proper Location For Unit ...........................................................................................................................5
B. Roof Preparation .......................................................................................................................................................5
C. Wiring Requirements .................................................................................................................................................6
D. Placing Unit On Roof .................................................................................................................................................6
E. Installing Unit ............................................................................................................................................................. 6
F. Wiring System ...........................................................................................................................................................8
G. Air Distribution Box Installation .................................................................................................................................. 9
OPERATING INSTRUCTIONS ............................................................................................................................................. 10
A. Controls ...................................................................................................................................................................10
B. “OFF” Position .........................................................................................................................................................10
C. Cooling Operation .................................................................................................................................................... 10
D. Heating Operation (With Optional Electric Heater Installed) ................................................................................... 10
E. Fan Operation .......................................................................................................................................................... 10
MAINTENANCE ................................................................................................................................................................... 11
A. Air Filter ................................................................................................................................................................... 11
B. Air Distribution Box Housing .................................................................................................................................... 11
C. Fan Motor ................................................................................................................................................................ 11
D. Frost Formation On Cooling Coil ............................................................................................................................. 11
E. Heat Gain ................................................................................................................................................................ 11
F. Condensation .......................................................................................................................................................... 11
SERVICE - UNIT DOES NOT OPERATE .............................................................................................................................12
WIRING DIAGRAMS ............................................................................................................................................................ 12
A. Unit Wiring Diagram ................................................................................................................................................12
B. Air Distribution Box Wiring Diagram ........................................................................................................................12
OWNER'S LIMITED WARRANTY ........................................................................................................................................13
A. What's Covered .......................................................................................................................................................13
B. What's Not Covered ................................................................................................................................................13
C. Coverage Period ...................................................................................................................................................... 14
D. Getting Service ........................................................................................................................................................ 14
E. Table Of Warranty Periods.......................................................................................................................................15
2
DOCUMENT SYMBOLS
Indicates additional information that is NOT related
to physical injury.
IMPORTANT SAFETY INSTRUCTIONS
This manual has safety information and instructions to help
users eliminate or reduce the risk of accidents and injuries.
A. Recognize Safety Information
This is the safety alert symbol. It is used to
alert you to potential physical injury hazards.
Obey all safety messages that follow this
symbol to avoid possible injury or death.
B. Understand Signal Words
A signal word will identify safety messages and
property damage messages, and will indicate the
degree or level of hazard seriousness.
indicates a hazardous situation that,
if NOT avoided, could result in death or serious injury.
indicates a hazardous situation that,
if NOT avoided, could result in minor or moderate
injury.
is used to address practices NOT
related to physical injury.
C. Supplemental Directives
Indicates step-by-step instructions.
Read and follow all safety information and
instructions to avoid possible injury or death.
Read and understand these instructions before [installing / using / servicing / performing
maintenance] on this product.
Incorrect [installation / operation / servicing /
maintaining] of this product can lead to serious injury. Follow all instructions.
The installation MUST comply with all applicable ABYC, local or national codes,
including the latest edition of the following
standards:
U.S.A.
● ANSI/NFPA70, National Electrical Code
(NEC)
CANADA
● CSA C22.1, Parts l & ll, Canadian Electri-
cal Code
D. General Safety Messages
Failure to obey the following warnings could result in death or serious injury:
● This product MUST be [installed / serviced] by a
qualied service technician.
● Do NOT modify this product in any way. Modica-
tion can be extremely hazardous.
● Do NOT add any devices or accessories to this
product except those specically authorized in
writing by Dometic, LLC.
3
SPECIFICATIONS
A. Table - Unit Data
Type 3341P
A/C OR HP A/C
Nominal Cooling
Capacity (kW)
Electric Heat
Capacity (kW)
Electrical Rating 220 - 240 Vac 50 Hz, 1 ph
Full Load Amps
(Compressor / Motor)
Locked Rotor Amps
(Comp / Motor)
Power (kW)
Compressor + Motor
Power (kW)
Heater
Refrigerant R410A
Gram / Ounce
Minimum Wire Size Up to 8 meters use 1.5 mm2, Copper.
AC Circuit Protection
(Installer Supplied)
* Generator Size 1 Unit - 3.5 kW
Rating Plate 3313169.000
Height 333 mm
Width 759 mm
Depth 886 mm
Weight 46.7 kg
Consult Regulatory Codes.
10 Amp Time Delay Fuse,
3.4
1.6
5.56 / 1.4
25 / 2.6
1.38
1.6
822 / 29
or Circuit Breaker
2 Unit - 5.0 kW
B. Power Requirements
● 220 - 240 Vac, 50 Hz, 10 Amp.
● Power when the unit starts must be above 198
Vac and the frequency must be 50 Hz at all
times.
C. Roof Requirements
● A 362 mm x 362 mm (±3 mm) square opening
(hereinafter referred to as “roof opening”) is required for installing this unit.
● If applicable: Roof construction with rafters/
joists support frames on minimum of 406 mm
centers.
● Minimum of 25 mm and maximum of 102 mm
distance between roof to ceiling.
* Dometic Marine gives GENERAL guidelines for generator requirements. To reduce start-up power draw by up to
65%, consider installing a Dometic SmartStart.
4
INSTALLATION INSTRUCTIONS
A. Choosing Proper Location For Unit
This unit is specically designed for installation on the roof
of a boat. Mount only with front of unit facing the bow (the
vented end should face aft). See (FIG. 4).
FIG. 2
572 mm
508 mm
When determining your cooling requirements, the following
should be considered:
● Size of boat;
● Window area (increases heat gain);
● Amount of insulation in walls and roof;
● Geographical location where boat will be used;
● Personal comfort level required.
It is preferred that the unit be installed on a relatively at
and level roof section, but up to a 15° tilt is acceptable.
1. After location has been selected:
a. Check for obstructions in the area where unit
will be installed. See (FIG. 1).
FIG. 1
333 mm
886 mm
Dimensions Are Nominal
457 mm
Center Line
Of Unit
759 mm
Roof Opening
Front
64 mm
Dimensions Are Nominal
286 mm
70 mm
76 mm
Roof Opening
Dimensions Are Nominal
286 mm
508 mm
B. Roof Preparation
1. FIRE OR ELECTRICAL SHOCK
HAZARD. Verify there are no obstacles inside
boat’s roof and/or walls (wires, pipes, etc.). Shut
OFF gas supply, disconnect 120 Vac power
from boat, and disconnect positive (+) 12 Vdc
terminal from supply battery BEFORE drilling or
cutting into boat. Failure to obey these warnings
could result in death or serious injury.
Front
286 mm
Keep This Area Free Of Obstructions
Dimensions Are Nominal
b. Maintain structural integrity.
Otherwise damage to product and/or boat
could occur.
The roof must be designed to support 60
kg when the boat is in motion. Normally
a 91 kg static load design will meet this
requirement.
c. Check inside the boat’s cabin for air distri-
bution box obstructions (i.e. space for doors
to open, room dividers, curtains, ceiling xtures, etc.). See (FIG. 2).
2. Carefully mark and cut the required roof opening. See section, "C. Roof Requirements" on
page (4).
3. Using the roof opening as a guide, cut the matching hole in the ceiling.
4. Maintain structural integrity. Otherwise damage to product and/or boat could
occur.
NEVER create a low spot on boat
roof. Otherwise, water will pool and could cause
a leak.
The opening created must be framed to provide adequate support and prevent air from being drawn from the roof cavity. Framing stock
19 mm or more in thickness must be used.
Remember to provide an entrance hole for
power supplies at the front of the opening. See
(FIG. 3).
5
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