Dometic 489516P series User manual

Read these instructions carefully. These
instructions MUST stay with this product.
USA
SERVICE OFFICE
Dometic Corporation
1120 North Main Street
Elkhart, IN 46514
CANADA
Dometic Corporation
46 Zatonski, Unit 3
Brantford, ON N3T 5L8
CANADA
SERVICE CENTER &
DEALER LOCATIONS
Please Visit:
www.eDometic.com
Roof Top Unit
Description Model Use With Air Distribution Box (not included)
Model Control
Air Conditioner 489516P
489516A
3314861.000 Integral Mechanical
REVISION B
Form No. 3315430.000 08/16
(French 3315824.000_B)
©2016 Dometic Corporation
LaGrange, IN 46761
RECORD THIS INFORMATION FOR FUTURE
REFERENCE:
Model Number
Serial Number
ADB Model Number
ADB Serial Number
Date Purchased
DuraSea Roof Top Air Conditioner
INSTALLATION & OPERATING
INSTRUCTIONS

2
TABLE OF CONTENTS
INTRODUCTION....................................................................................................................................................................2
IMPORTANT SAFETY INSTRUCTIONS................................................................................................................................3
A. Recognize Safety Information ...................................................................................................................................3
B. Understand Signal Words..........................................................................................................................................3
C. Supplemental Directives............................................................................................................................................3
D. General Safety Messages .........................................................................................................................................3
DOCUMENT SYMBOLS ........................................................................................................................................................3
SPECIFICATIONS..................................................................................................................................................................4
A. Table - Unit Data........................................................................................................................................................4
B. 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 .............................................................................................................................................................7
F. Wiring System ...........................................................................................................................................................9
G. Installing ADB ............................................................................................................................................................9
OPERATING INSTRUCTIONS............................................................................................................................................. 11
A. Controls ................................................................................................................................................................... 11
B. "OFF" Position ( ) .................................................................................................................................................. 11
C. Cooling Operation (Blue Graphic) ........................................................................................................................... 11
D. Heating Operation (With Electric Heater Option Installed). ..................................................................................... 11
E. Fan Operation (Black Graphic)................................................................................................................................ 11
F. Center Air Discharge ............................................................................................................................................... 11
MAINTENANCE ...................................................................................................................................................................12
A. Air Filter ...................................................................................................................................................................12
B. ADB Housing ...........................................................................................................................................................12
C. Fan Motor ................................................................................................................................................................12
GENERAL INFORMATION...................................................................................................................................................12
A. Frost Formation On Cooling Coil .............................................................................................................................12
B. Heat Gain ................................................................................................................................................................12
C. Condensation ..........................................................................................................................................................12
SERVICE - UNIT DOES NOT OPERATE ............................................................................................................................13
WIRING DIAGRAMS............................................................................................................................................................13
A. Unit Wiring Diagram ................................................................................................................................................13
B. ADB Wiring Diagram ...............................................................................................................................................13
OWNER'S LIMITED WARRANTY ........................................................................................................................................14
A. What's Covered .......................................................................................................................................................14
B. What's Not Covered ................................................................................................................................................14
C. Coverage Period......................................................................................................................................................15
D. Getting Service ........................................................................................................................................................15
E. Table Of Warranty Periods.......................................................................................................................................16
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 these instructions to ensure a properly
installed, and properly functioning product.
Dometic Corporation reserves the right to modify appearances and specications without notice.

3
IMPORTANT SAFETY INSTRUCTIONS
DOCUMENT SYMBOLS
Indicates additional information that is NOT related
to physical injury. Indicates step-by-step 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 in-
jury.
 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
Read and follow all safety information and
instructions to avoid possible injury or death.
Read and understand these instructions be-
fore [installing / using / servicing / performing
maintenance on] this product.
Incorrect [installation / operation / servicing /
maintaining] of this product can lead to seri-
ous injury. Follow all instructions.
The installation MUST comply with all ap-
plicable 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 warn-
ings could result in death or serious injury:
●This product MUST be [installed / serviced] by a
qualied service technician.
●Do NOT modify this product in any way. Modica-
tion can be extremely hazardous.
●Do NOT add any devices or accessories to this
product except those specically authorized in
writing by Dometic Corporation.

4
A. Table - Unit Data
Model No. Nominal
Capacity
(BTU HR)
Cooling
Electrical
Rating
Compressor
Rated Load
Amps
Compressor
Locked
Rotor
Amps
Fan Motor
Rated Load
Amps
Fan Motor
Locked
Rotor
Amps
Refrigerant
R-410A
(oz)
Minimum
Wire Size*
AC Circuit
Protection
***Installer
Supplied
Minimum
Generator
Size**
1 Unit / 2 Units
489516P70X 15,000 120 Vac
60 Hz 1 ph
13.3 66.0 2.5 5.8 27.5 12 AWG
Copper
Up to 24'
20 Amp 3.5 kW / 5.0 kW
489516P71X 15,000 13.3 70.0 2.5 5.8 27.5 20 Amp 3.5 kW / 5.0 kW
489516A71X 15,000 13.3 70.0 2.5 5.8 27.5 20 Amp 3.5 kW / 5.0 kW
* For wire length over 24 ft., consult the National Electrical Code for proper sizing.
** Dometic Marine gives GENERAL guidelines for generator requirements. To reduce start-up power draw by up to 65%,
consider installing a Dometic SmartStart.
*** CIRCUIT PROTECTION: Time Delay Fuse or Circuit Breaker Required.
B. Roof Requirements
● A 14-1/4″ x 14-1/4″ (±1/8″) square opening (hereinafter referred to as “roof opening”) is required for installing this
unit. This opening is part of the return air system of the unit and MUST be nished in accordance with NFPA 1192.
●If applicable: Roof construction with rafters/joists support frames on a minimum of 16 inch centers.
●Minimum of 1.5 inches and maximum of 6 inches distance between roof to ceiling.
SPECIFICATIONS

5
INSTALLATION INSTRUCTIONS
A. Choosing Proper Location For Unit
This unit is specically 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" on page (6).
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. See table below for maximum ac-
ceptable tilt.
Model
Number
Max
Tilt
489516P
489516A
15°
1. After Location Has Been Selected:
a. Check for obstructions in the area where unit
will be installed. See (FIG. 1).
29-7/8″
34-7/8″
13-1/8″
18″
Front
Dimensions Are Nominal
FIG. 1
Keep This Area Free Of Obstructions
Roof Opening
Center Line Of Unit
b.  Maintain structural integrity.
Otherwise damage to product and/or boat
could occur.
The roof must be designed to support 130
pounds when the boat is in motion. Normal-
ly a 200 lb. static load design will meet this
requirement.
c. Check inside the boat's cabin for air distri-
bution box (hereinafter referred to as "ADB")
obstructions (i.e. space for doors to open,
room dividers, curtains, ceiling xtures, etc.).
See (FIG. 2).
FIG. 2
23-1/8″
21-1/8″
2-5/8″
Dimensions Are Nominal
11-9/16″ 11-9/16″
21-1/8″
3-7/16″
3-7/16″
2-7/8″
6″
Roof Opening
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.
Opening Requirements - Before prepar-
ing the ceiling opening, read all of the fol-
lowing instructions before beginning the
installation.
2. Carefully mark and cut the required roof opening.
See "B. Roof Requirements" on page (4).
3.  Maintain structural integrity. Oth-
erwise damage to product and/or boat could oc-
cur.
 NEVER create a low spot on boat
roof. Otherwise, water will pool and could cause
a leak.

6
Using the roof opening as a guide, cut the match-
ing hole in the ceiling.
The opening created must be framed to provide
adequate support and prevent air from being
drawn from the roof cavity. Framing stock 3/4″ 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).
3/4″ Min.
Leave Access For
Power Supply Wiring
FIG. 3
15″ Min. At
Front Of
Opening
Do Not Cut Roof
Structure Or
Rafters
Good-Rafters
Supported By
Cross Beams
Good Location
Between Roof
Rafters
Frame Opening So It
Won't Collapse When
Bolting Down Unit
C. Wiring Requirements
1. Route a copper, with ground, 120 Vac supply
wire from the time delay fuse or circuit breaker
box to the roof opening. Use a listed/certied
non metallic - sheathed single strand cable. See
"A. Table - Unit Data" on page (4).
a. This supply wire must be located in the front
portion of the roof opening.
b. The power MUST be on an appropriately
sized separate time delay fuse or circuit
breaker. See "A. Table - Unit Data" on page
(4).
c. Make sure that at least 15″ of supply wire
extends into the roof opening. This insures
an easy connection at the junction box.
d. Protect the wire where it passes into the
opening with approved method.
D. Placing Unit On Roof
1. Remove the unit from the carton and discard
carton.
2.  LIFTING HAZARD. Use proper
lifting technique and control when lifting product.
Failure to obey this caution could result in injury.
Place unit on the roof.
3.  Do NOT slide unit. Otherwise,
damage to gasket (on bottom of unit) may occur,
and could cause a leak.
Lift and place the unit over the prepared open-
ing using the gasket on the unit as a guide. See
(FIG. 4).
FIG. 4 Lift And Place
Front Towards Bow
Do Not Slide
4. Place the ADB kit (ordered separately) inside
the boat. This box contains mounting hardware
for the unit and will be used inside the boat.
This completes the outside work. Minor
adjustments can be done from inside the
boat if required.
INSTALLATION INSTRUCTIONS

7
FIG. 7
Electrical
Cord
Measure Ceiling
Thickness
5. Duct Divider Installation
a. Measure the ceiling thickness. See (FIG. 7).
b. Cut away the number of rows as indicated in
table below. See (FIG. 8).
Ceiling
Thickness
# Of
Rows
To Cut
Ceiling
Thickness
# Of
Rows
To Cut
Min. Max. Min. Max.
6.0 6.5 0 3.5 4.0 5
5.5 6.0 1 3.0 3.5 6
5.0 5.5 2 2.5 3.0 7
4.5 5.0 3 2.0 2.5 8
4.0 4.5 4 1.5 2.0 9
FIG. 8
Remove Rows
Starting Here
c. Carefully install the duct divider in the roof
opening 5-5/8″ from back of roof opening.
See (FIG. 9).
Foil back faces rear of unit.
FIG. 9
Rear
Base Pan
5-5/8″From Back
Of Roof Opening
Duct Divider Front
Black Side
To Front
E. Installing Unit
1. Check for correct alignment and adjust the unit
as necessary (roof gasket centers over the roof
opening). See (FIG. 5).
FIG. 5 Center Unit From Below
Roof Gasket
2. Remove ADB and mounting hardware from car-
ton. See (FIG. 6).
FIG. 6
Duct Divider Ceiling
Template
ADB
Control
Box
3. All models in this manual will use a four (4) bolt
pattern for installing the ADB kit.
4. Reach up into the return air opening of the unit
and pull the unit electrical cord down for later
connection. See (FIG. 7).
INSTALLATION INSTRUCTIONS

8
INSTALLATION INSTRUCTIONS
6. Ceiling Template Installation
a. Plug the 6 pin electrical cord from the top unit
into the matching 6 pin connector in the elec-
tronic control box. The plug is polarized and
will only t in one direction. See (FIG. 10).
FIG. 10
120 Vac
Power Supply
Cable
Connector
Unit Electrical
Cord
Proper Orientation
Of Cable Connector
b. Install supplied non metallic cable connector
in junction box hole cutout. See (FIG. 10) for
proper orientation.
c. Route the previously run 120 Vac power sup-
ply wire through cable connector and into
junction box.
d. Secure 120 Vac power supply by tightening
cable connector clamp making sure not to
damage wires. See (FIG. 10).
e. Hold the ceiling template up to the roof open-
ing and line up the channel in the ceiling
template with the previously installed duct
divider. See (FIG. 11).
FIG. 11
Duct Divider
Channel
f. Hold the ceiling template up to the roof open-
ing and start each mounting bolt, by hand,
through the ceiling template and up into the
unit base pan. See (FIG. 12) & (FIG. 13).
FIG. 12
Mounting Bolt
Mounting Bolt
Mounting Bolt Pattern Table See (FIG. 13)
Model Bolt Location
489516P
489516A
A, D, E & H
FIG. 13 A
HG
FE
D
C
B
g.  Tighten mounting bolts to
correct torque specications. Overtighten-
ing could damage unit’s base pan or ceiling
template. Not enough torque will allow an in-
adequate roof seal, and could cause a leak.
Tighten all four (4) mounting bolts EVENLY
with in 40 to 50 inch pounds. See (FIG. 12).

9
F. Wiring System
1. 120 Vac Power Supply Connection
a.  ELECTRICAL SHOCK HAZ-
ARD. Verify 120 Vac power is disconnected
from boat. Failure to obey this warning could
result in death or serious injury.
b.  ELECTRICAL SHOCK HAZ-
ARD. Provide grounding in compliance with
all applicable electrical codes. Failure to
obey this warning could result in death or se-
rious injury.
c. Connect white to white; black to black; using
appropriate size connectors. Secure bare
copper wire under grounding screw in junc-
tion box. See (FIG. 14).
FIG. 14
Junction
Box Cover
Junction Box
Cover Screw
d. Tape the connectors to the supply wire to as-
sure they don't vibrate loose.
e. Push the wires into the junction box and in-
stall junction box cover. See (FIG. 14).
G. Installing ADB
1. Align ADB with ceiling template. See (FIG. 15)
& (FIG. 16).
Front and rear vent doors are supplied
loose. Do NOT install them until all screws
are installed in step 2 & 3.
FIG. 15
ADB Alignment Holes
Ceiling Template
Alignment Holes
FIG. 16 Hole In Ceiling
Template
ADB Hole
Alignment
Hole In
ADB Cover
INSTALLATION INSTRUCTIONS

10
FIG. 19
Slot In ADB
Return Air
Vent Grille
7. Install the control knobs into the ADB. See
(FIG. 20).
FIG. 20
Knob
8. The unit installation is now complete and is
ready for operation. The power supply to the unit
may now be turned on.
9. Verify that all features of the installed system
work. Please read the following operating in-
structions before attempting to run the unit.
INSTALLATION INSTRUCTIONS
2. Install two (2) (supplied) sheet metal screws in-
side return air opening to secure ADB to ceiling
template. See (FIG. 17).
3. Install eight (8) (supplied) wood screws inside
the front, rear and side doors to secure ADB to
ceiling. See (FIG. 17).
FIG. 17 2 Sheet
Metal Screws
8 Wood Screws
4. Install front and rear doors.
5. Place lter in return air vent grille. It may already
be installed on some units. See (FIG. 18).
FIG. 18
Filter
Return Air
Vent Grille
6. Install return air vent grille into the ADB. Slide re-
turn air vent grille tab into slot in ADB and rotate
up and snap in place. See (FIG. 19).