Dometic 620515.336, 620525.331, 620526.331, 620525.336, 630516.336 User Manual

620515, 620525, 620526, 630515 & 630516 Installation Instructions

C

S

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

MODEL

620515, 620525, 620526

Roof-Top Air Conditioner

630515, 630516

Roof T op Heat Pump

used with one of following:

3105007 Return Air Cover

USA

SERVICE OFFICE
Dometic Corporation
2320 Industrial Parkway
Elkhart, IN 46516
574-294-2511

CANADA

Dometic Corporation
46 Zatonski, Unit 3
Brantford, ON N3T 5L8
CANADA
519-720-9578

For Service Center
Assistance Call:

800-544-4881

U

3105935 Quick Cool Return Air Cover

3308120 Genesis Air Filtration System

and

3109228.001 (White) Comfort Control Center

3109228.019 (Black) Comfort Control Center

THIS UNIT IS DESIGNED FOR OEM INSTALLATION

ALL INITIAL INSTALLATIONS MUST BE APPROVED BY THE SALES DEPT.

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.

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.

TM

TM

INSTALLATION

INSTRUCTIONS

REVISION:

Form No. 3309083.032 9/07
(Replaces 3309083.024)
(French 3309084.030)
©2007 Dometic Corporation
LaGrange, IN 46761

Important: These Instructions

must stay with unit.
Owner read carefully.

1

Models

620515.331

620515.336

620525.331

620525.336

620526.331

620526.336

630515.331

630515.336

630516.331

630516.336

620515, 620525, 620526, 630515 & 630516 Installation Instructions

WARNING

CAUTION

CAUTION

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

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 5.50
inches distance between roof to ceiling of recre­ational vehicle. Alternate installation methods will
allow forroofs more than 5.50 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 us
age

4. Avoiding the use of heat producing appliances

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

!

indicates a potentially hazard­ous situation which, if not avoided, could result in
death or serious injury .

!

indicates a potentially hazard­ous situation which, if not avoided may result in
minor or moderate injury .

used without the safety alert
symbol indicates, a potentially hazardous situa­tion which, if not avoided may result in property
damage.

Read and follow all safety information and instruc­tions.

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.

2

Size**

Minimun

Generator

1Unit/2Units

Weight

Installed

(Pounds)

** User

Supplied

AC Circuit

Protection

Minimum

Wire Size*

R-22

(Oz.)

Refrigerant

Copper

12 AWG

620515, 620525, 620526, 630515 & 630516 Installation Instructions

Up To 24'

Total

Static

Max./Min.

Speed

Max./Min.

SCFM-High

SPECIFICATIONS

Rotor

Locked

Fan Motor

Load

Rated

Fan Motor

Rotor

Locked

Compressor

Load

Rated

Compressor

Watts

Heater

Amps

Rating

Electrical

W.C.

Amps

Amps

Amps

Amps

60Hz.

120VAC

1 Phase

Nominal

Capacity

(BTU/HR)

No.

Model

Cooling

620515.331 13,500 1530 12.4 60.0 3.5 10.0 335 / 250 .012 / 0.65 16.5 20 Amp 95 3.5 KW/5.0 KW

620515.336 13,500 1530 12.4 60.0 3.5 10.0 335 / 250 .012 / 0.65 16.5 20 Amp 95 3.5 KW/5.0 KW

620525.331 13,500 1530 12.4 60.0 3.5 10.0 335 / 250 .012 / 0.65 16.5 20 Amp 95 3.5 KW/5.0 KW

620525.336 13,500 12.4 60.0 3.5 10.0 335 / 250 .012 / 0.65 16.5 20 Amp 95 3.5 KW/5.0 KW

620526.331 15,000 12.0 64.0 3.3 8.2 380 / 250 .012 / 0.65 20.0 20 Amp 95 3.5 KW/5.0 KW

620526.336 15,000 12.0 64.0 3.3 8.2 380 / 250 .012 / 0.65 20.0 20 Amp 95 3.5 KW/5.0 KW

630515.331 13,500 12.4 60.0 3.5 10.0 335 / 250 .012 / 0.65 23.5 20 Amp 95 3.5 KW/5.0 KW

630515.336 13,500 12.4 60.0 3.5 10.0 335 / 250 .012 / 0.65 23.5 20 Amp 95 3.5 KW/5.0 KW

3

630516.331 15,000 12.0 64.0 3.3 8.5 335 / 250 .012 / 0.65 20.0 20 Amp 95 3.5 KW/5.0 KW

630516.336 15,000 12.0 64.0 3.3 8.5 335 / 250 .012 / 0.65 20.0 20 Amp 95 3.5 KW/5.0 KW

When sizing the generator, the total power usage of your recreational vehicle must be considered. Keep in mind generators lose power at high altitudes

an dfrom lack of maintenance.

* For wire length over 24 ft., consult the National Electric Code for proper sizing.

** Dometic Corporation gives GENERAL guidelines for generator requirements. These guidelines come from experiences people have had in actual applications.

*** CIRCUIT PROTECTION: Time Delay Fuse or HACR Circuit Breakers Required.

620515, 620525, 620526, 630515 & 630516 Installation Instructions

CAUTION

M

i

c

r

o

-

T

h

e

r

m

F

i

l

t

e

r

S

y

s

t

e

m

Micro-Therm

Filter

System

F
I

L
T

E

R
R
E

S

E

T

FILTER
RESET

C
L
E

A

N
F
I

L

T

E

R

CLEAN
FILTER

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. 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

1/2L

L

2/3L

L

1/3L

It is preferred that the air conditioner be installed on
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 all units.

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

conditioner will be installed. See FIG. 4.

b. The roof must be designed to support 130

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

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.

FIG. 1

2. Other Locations-When no roof vent is available or
another location is desired, the following is recom-

mended:
a. For one unit installation: The air conditioner

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

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 return air kit obstruc-

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

FIG. 3

9-1/2"

28-3/4"

39"

Genesis

3/4"

17"

Standard
Grill

4

2"

17"

18-1/2"

20-7/8"

620515, 620525, 620526, 630515 & 630516 Installation Instructions

CAUTION

FIG. 4

4"

4"

7-1/8”

4-1/8”

21-3/8”

REAR
OF
UNIT

14-1/4" x 14-1/4”

(±1/8”) OPENING

Center Line
of Unit

7-1/8”

KEEP THESE AREAS
FREE OF OBSTRUCTIONS

12"

Air Grill Perimeter

1-1/2"

F

17"

r
o
n

1-1/4"

14-1/4 x 14-1/4
(±1/8")
Opening

t

1-1/2"

17"

1-3/4"

3"

Standard

2"

14-1/4 x 14-1/4
(±1/8")
Opening

2"

20-7/8"

Genesis

18-1/2"

R

3"

e
a
r

Grill

C. Roof Preparation

1. Opening Requirements - Before preparing the ceil­ing opening, the type of system options must be
decided upon. 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 120 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.

The 14-1/4" x 14-1/4" (±1/8") opening is part of the
return air system of the Air Conditioner and must be
finished in accordance with NFPA Standard 501C
Section 2.7.2.

2. Roof Vent Removal
a. Unscrew and remove the roof vent.
b. Remove all caulking compound around open-

ing.

c. Seal all screw holes and seams where the roof

gasket is located. Use a good grade of all
weather sealant. See FIG. 5.

FIG. 5

d. If the opening exceeds 14-3/8" x 14-3/8", it will

be necessary to re-size the opening to 14-1/4"
x 14-1/4" (±1/8").

e. If the opening is less than 14-1/8" x 14-1/8", it

must be enlarged.

3. New Opening- (Installation Other Than Vent Open­ing)
a. Mark a 14-1/4" x 14-1/4" (±1/8") square on the

roof and carefully cut the opening.

b. Using the roof opening as a guide, cut the

matching hole in the ceiling.

c. The opening created must be framed to provide

adequate support and prevent air from being
drawn from the roof cavity. Lumber 3/4" or more
in thickness must be used. Remember to pro­vide an entrance hole for power supplies, fur­nace wiring and a seven-conductor cable, 18 to
22 AWG is to be used for analog thermostat

connections.

FIG. 6

Do Not Cut
Roof Structure
Or Rafters

3/4" Min.

Good-Rafters
Supported By
Cross Beams

Frame Opening So It

Good Location­Between Roof
Rafters

Won't Collapse When
Bolting Down Unit

15" Min. At
Leave Access For Power
Supply Wiring

Front Of

Opening

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.

5

620515, 620525, 620526, 630515 & 630516 Installation Instructions

CAUTION

4. Air Distribution System Sizing & Design

It is the responsibility of the installer to insure
the ductwork will not collapse or bend during
and after the installation. Dometic Corporation
will not be liable for roof structural or ceiling
damage due to improperly insulated, sealed
or collapsed ductwork.

The Installer of this air conditioner system must
design the air distribution system for their particular
application. Several requirements for this system
MUST be met for the air conditioner to operate
properly. These requirements are as follows:
a. The duct material must meet or exceed any

agency or RVIA Standard that may be in exist­ence at the time the RV is produced.

b. All discharge air ducts must be properly insu-

lated to prevent condensation from forming on
their surfaces or adjacent surfaces during op­eration of the air conditioner. This insulation
must be R-7 minimum.

c. Ducts and their joints must be sealed to prevent

condensation from forming on adjacent sur­faces during operation of the air conditioner.

d. Return air openings must have 40 square inches

minimum free area including the filter.

e. Return air to the air conditioner must be filtered

to prevent dirt accumulation on air conditioner
cooling surface.

5. Air Distribution System Installation
a. Dometic Corporation recommends the basic

configuration shown on page 7, for installing
this air conditioner system. We have found by
testing, that this configuration works best in
most applications of this air conditioner sys­tem. It is the responsibility of the Installer of this
system to review each RV floor plan and deter­mine the following:

• Duct size

• Duct layout

• Register size

• Register location

• Thermostat location

AIR DISTRIBUTION

DUCT SIZING & DESIGN CHART

Return Air Cover Model 3105007 3308120

3105935 Genesis Air Filtration System

Roof Cavity Depth 2.0 In. Min. - 5-1/2 In. Max. 2.0 In. Min. - 5-1/2 In. Max.
Duct Cross Sectional Area 21.0 Sq. In. Min. 32.0 Sq. In. Min.

Duct Size

Depth 1-1/2 In. Min. - 2-1/2 In. Max. 2.0 In. Min. - 2-1/2 In. Max.
Width 7.0 In. Min. - 10.0 In. Max. 8.0 In. Min. - 10.0 In. Max.
T ot al Duct Length 15.0 Ft. Min. - 40.0 Ft. Max. 15.0 Ft. Min. - 40.0 Ft. Max.
Duct Length (short run) 1/3 Total Duct Length 1/3 Total Duct Length

Center Duct System (Only)

Depth 2.0" In. Min. - 2.0" Max.
Width 8.0 In. Min. - 8.0 In. Max.
T ot al Duct Length 15.0 Ft Min. - 40 Ft. Max.
Duct Length (Short Run) 1/3 T otal Length

Register Requirements

Number Required Per Run 4 Min. 4 Min.
Register Free Air Area 14.0 Sq. In. 14.0 Sq. In.
Distance From Duct End 5.0 In. Min. - 8.0 In. Max. 5.0 In. Min. - 8.0 In. Max.
Distance From Elbow 15.0 In. 15.0 In.

Duct Static

Blower at High Speed,
Filter & Grill In Place 0.12 - 0.65 In. W.C. 0.12 - 0.65 In. W.C.

Note: Duct sizes listed are inside dimensions.

6

620515, 620525, 620526, 630515 & 630516 Installation Instructions

FRAME

14-1/4" (±1/8”)

OPENING

AC POWER
SUPPLY WIRE

DUCT

FRAME

DUCT

ROOF

INSULATION

DUCT

CEILING

DUCT

14-1/4" (±1/8”)

OPENING

INSULATION

SIDE VIEW

(TOWARD BACKOFRV)

TOP VIEW

(BACK OF RV)

LOWVOLTA GE WIRES:

12VDC

Furnace
Load Shed
Sensors

FRAME

CCC, CONTROLCABLE(S)
or 7-Wire Analog Cable

These items must be determined in conjunction with the
Air Distribution System and Sizing and Design Require­ments listed in the chart on page 6. Terminate the start
of the duct at the back edge of the 14-1/4" x 14-1/4" (±1/
8"). See FIG. 7, 7A, and 7B.

Important: Alternate configurations and methods

may be used which still allow the air conditioner to
operate properly; however, these alternate configura­tions and methods must be approved by the Dometic
Corporation in writing. The following instructions are
based upon the use of 3105007 Dometic Return Air Kit,
3105935 Dometic Return Air Kit or 3308120 Genesis Air
Filtration System and a 3109228.001 and/or 3109228.019

Comfort Control CenterTM.

FIG. 7A

Duct Size And Requirements For 3105007 And 3105935 Return Air Cover

FIG. 7

Register Required

Register Required
Short Duct Run Minimum

1/3 T ot al Duct Length

Total Outlet Air Area
Minimum 21.0 Sq. In.

Ducts Min. Max.
Depth 1-1/2” 2-1/2”
Width 7.0” 10.0”
Total Length 15.0’ 40.0’

Register Required

Note: Duct Size is Inside Dimensions

FIG. 7B

Duct Size And Requirements For 3308120 Genesis Air Filtration System Kit

Register Required

Short Duct Run Minimum
1/3 T ot al Duct Length

Ducts Min. Max.
Depth 2.0” 2-1/2”
Width 8.0” 10.0”
Total Length 15.0’ 40.0’

Total Outlet Air Area
Minimum 32.0 Sq. In.

Roof
Rafters

Registers

8 Min.-- 12 Max.
(Per Unit)
14 Sq. In Free Area
Per Register

Register Required

14-1/4"x14-1/4" (±1/8")

Roof Opening

Register Required

Registers

8 Min.-- 12 Max.
(Per Unit)
14 Sq. In Free Area
Per Register

Register Required

Note: Duct Size is Inside Dimensions

Roof
Rafters

7

Register Required

14-1/4"x14-1/4" (±1/8")

Roof Opening

620515, 620525, 620526, 630515 & 630516 Installation Instructions

D. Wiring Requirements

1. 120 VAC Supply Line
Route a copper 12 AWG, with ground, 120 VAC
supply line from the time delay fuse or circuit breaker
box to the roof opening.

a. This supply line must be located in the front

portion of the 14-1/4" x 14-1/4" (±1/8") opening.

b. The power MUST be on a separate 20 Amp time

delay fuse or HACR circuit breaker.

c. Make sure that at least 15" of supply wire

extends into the roof opening. This ensures and
easy connection at the junction box.

d. Wiring must comply with all National, State and

Local Wiring Codes.

e. Use a steel sleeve and a grommet or equivalent

methods to protect the wire where it passes into
the opening.

2. Route a dedicated 12 VDC supply line (18-22 AWG)
from the RV's converter(filtered terminals) or
battery to the roof opening.

a. This supply line must be located in the front

portion of the 14-1/4" x 14-1/4" (±1/8") opening.

b. Make sure that at least 15" of supply wire

extends into the roof opening.

c. In a multiple zone installation, this wiring is

required in only one of the 14-1/4" x 14-1/4"
(±1/8") openings.

3. If a Remote Temperature Sensor is used, the con­nector end must be routed from the sensor location
to the roof opening of the system which it will control.
Make sure that at least 15" of the sensor cable
extends into the roof opening. Refer to the Remote
Sensor Instructions for details of the installation.

4. If a furnace is to be controlled by the system, the two
furnace thermostat leads must be routed to the roof
opening of the air conditioner that will control it.
Make sure that at least 15" of the furnace thermostat
wires extend into the roof opening.

5. If an Energy Management System (load shed fea­ture) is to be used with the control, two wires must
be routed to the roof opening of the zone to be
managed. The signal required for this function is
normally open relay contact. When the EMS calls
for the compressor to shut off, the relay contacts
should close. Make sure at least 15" of the EMS
wires extend into the roof opening.

6. Route a 4-conductor control cable from the Comfort
Control Center™ mounting position into the
14-1/4" x 14-1/4" (±1/8") roof opening. Make sure
that at least 15" of the wire extends into the roof
opening and 6" extend from the wall at the mounting
position of the Comfort Control Center™. See
Section E-2.

7. In the event that other Air Conditioners are installed
(additional zones) an additional 4-conductor control
cable must be routed to the other Air Conditioners.
Make sure that at least 15" of the wire extends into
the roof opening. See FIG. 27.

8. If an automatic generator start kit (AGS) will be
installed, a 4-conductor control cable must be
routed from the last air conditioner to location of
AGS kit. Follow AGS kit instructions for installation.

E. Dometic Comfort Control Center™ & Cable

Installation

1. Location
a. If the system is to be used WITHOUT a Re-

mote Temperature Sensor, the proper loca­tion of the Comfort Control Center™ is very
important to ensure that it will provide a comfort­able RV temperature. Observe the following
rules when selecting a location:

• Locate the Comfort Control Center™ 54"

above the floor.

• Install the Comfort Control Center™ on a

partition, not on an outside wall.

• NEVER expose it to direct heat from lamps,

sun or other heat producing items.

• Avoid locations close to doors that lead

outside, windows or adjoining outside walls.

• Avoid locations close to supply registers

and the air from them.

b. If the system is to be used WITH a Remote

Temperature Sensor in ALL zones, the Com­fort Control CenterTM may be mounted any-

where that is convenient in the coach. Try to
avoid hard to reach and hard to see areas.

• Refer to the instructions provided with the

Remote Temperature Sensor for details
of installation.

c. A 3/8" diameter hole will be needed to route the

cable through the wall. See Section D-3.

2. Control Cable Installation

A 4-conductor control cable must be routed from the
roof opening to the Comfort Control Center
a. Choose the shortest, most direct route from the

14-1/4" x 14-1/4" (±1/8") opening to the Com-

fort Control Center

6" of cable extending through the wall. See
Section D-6.

b. The control cable that should be used is a flat,

4-conductor telephone cable.

c. The control cable must be terminated with two

(2) RJ-11-6C4P telephone connectors. Refer to
the crimp tool manufacture for crimping instruc­tions. See FIG. 8A, 8B and 8C.

TM

location selected. Leave

TM.

8

CAUTION

FIG. 8A

Insert Screwdriver
under

Tab

MODE

FAN

UP

DOWN

OFF

ON

ZONE

TEMP

620515, 620525, 620526, 630515 & 630516 Installation Instructions

F. Placing Air Conditioner On The Roof

FIG. 8B

FIG. 8C

Red

Black

Yellow

Green

Pin 1

RJ-11-6C4P
Connector

Flat Four Conductor Cable

Red

Black

Yellow

Green

Important: RJ-11-6C4P connectors must be installed

as shown in FIG. 8A, 8B & 8C.

3. Comfort Control CenterTM Installation
a. Carefully remove the base plate from the Com-

fort Control CenterTM. This may be accom-

plished by inserting a small screwdriver under
the tab on thebottom edge of the front cover
and gently prying. See FIG. 9.

b. Insert the control cable through the hole in the

base plate and mount the plate to the wall with
two (2) screws provided. Check the alignment to
ensure level installation.

c. Install the control cable RJ-11-6C4P connector

into the back of the Comfort Control Center™
and snap onto the base plate. See FIG. 9.

FIG. 10

This unit weighs approximately 100 pounds.
To prevent back injury, use a mechanical hoist
to place Air Conditioner on roof.

1. Remove the air conditioner from the carton and dis­card carton. See FIG. 10.

2. Place the air conditioner on the roof.

Do not slide the unit. This may damage the
roof gasket attached to the bottom and may
create a leaky installation.

FIG. 11

FRONT

FIG. 9

E

D

O

M

N

FA

P

M

E

T

P

U

N

W

O

D

E

N

ZO

N

O

FF

O

Insert Screwdriver
under Tab

3. Lift and place the unit over the prepared opening using
the gasket on the unit as a guide. See FIG. 11.

4. Place the Return Air Kit inside the RV. This box
contains mounting hardware for the air conditioner
and will be used inside the RV.

This completes the outside work. Minor adjustments

can be done from the inside of the RV if required.

9

620515, 620525, 620526, 630515 & 630516 Installation Instructions

CAUTION

G . Installing The Air Conditioner



Installing Unit with 3105007 or 3105935 Return Air





Kit. For unit with Genesis Air Filtration System, see
page 11.

FIG. 12

Ceiling Template

Return Air
Grill

1. Installation Of Ceiling Template
a. Check gasket alignment of the air conditioner

over the roof opening and adjust if necessary .
Unit may be moved from below by slightly lift­ing and moving. See FIG . 13.

FIG. 13

Center Unit From Below

Divider Plate

Return Air
Cover

e. Install the Romex connector in the junction box.
f. Hold the ceiling template up to the 14-1/4" x

14-1/4" (±1/8") opening. Be sure the large plate
faces the rear of the RV.

g. Start each mounting bolt through the ceiling tem-

plate and up into the unit base pan by hand.
Install wood screw in each end of the ceiling
template. This insures a tight fit of the return air
cover to ceiling. See FIG. 14. Evenly tighten

mounting bolts to compress gasket to 1/2"
this will be a torque of 40 - 50 inch pounds.
The bolts are self locking so over tighten­ing is not necessary. See FIG. 15.

FIG. 15

Screws

Finger
Tight

Front of Vehicle

Tighten to
compress gasket
to 1/2"

Roof
Gasket

Roof
Gasket

b. Remove return air cover and ceiling template

from the 3105007 or 3105935 carton.

c. Locate the four (8" x 1/4- 20) unit mounting bolts,

junction box cover and Romex connector in the
3107180 bolt kit.

d. Pull down the unit's electrical cord and fasten

the junction box with screws to the framing in
the front of the 14-1/4" x 14-1/4" (±1/8") open­ing. See FIG. 14.

FIG. 14

DC Power
Furnace

Unit CCC
Connectors

Pull Electrical
Cord Down

Gasket

Fasten Jct. Box T o
Front Of Opening

If bolts are left loose there may not be ad­equate roof seal or if over tightened, damage
may occur to the air conditioner base or ceil­ing template. Tighten to specifications listed
in this manual.

2. Installation of Divider Plate
a. Measure the ceiling to roof thickness:

• If distance is 2.0" - 3-3/4", remove perfo­rated tab from divider plate.

• If distance is 3-3/4” - 5-1/2”, remove no tabs.

b. Remove the backing paper from double sided

tape located on ceiling template. See FIG. 16.

FIG. 16

AC Power
Supply

10

620515, 620525, 620526, 630515 & 630516 Installation Instructions

CAUTION

Micro-Therm

Filter

System

FILTER
RESET

CLEAN
FILTER

c. Place divider plate up to bottom of air condi-

tioner base pan firmly. The foam tape on the
divider plate must seal to bottom of base pan.
See FIG . 17.

Improper installation and sealing of divider
plate will cause the compressor to quick cycle
on the cold control. This may result in fuse or
circuit breaker opening and/or lack of cool­ing.

FIG. 17





Installing unit with 3308120 Genesis Air Filtration



System Return Air Kit. For unit with 3105007 or
3105935 Return Air Kit, see page 9.

FIG. 19

Genesis Air Filtration System
Return Air Kit

Foam
Divider

Ceiling
Template

Slider

Filter

Return Air
Cover

Grill

Micro-ThermFilter System

AN

E
L
C

ER

R

E

T

T
L
I

IL

F

F

T

E
S
E

Handle

R

Note: The adhesive on the insulation is extremely sticky.
Be sure the part is located where desired before pressing
into place.

d. With slight pressure then push the divider plate

against the double sided tape on the ceiling
template.

e. Locate the 1/8” x 7” x 18” self -adhesive insula-

tion supplied with the return air kit. Remove the
backing paper from the insulation and carefully
stick onto the ceiling template divider panel.
See FIG . 18.

FIG. 18

• Excess width is intended to seal the di-

vider plate to the sides of the 14-1/4" x 14­1/4" (±1/8") opening. This is to help pre­vent cold air discharge from circulating into
the air conditioner return air opening.

• If the insulation is too high, stick excess

height of insulation to the air conditioner
base pan. Do not cover up unit rating plate.

1. All Non-Center Duct Installations
Note: The Genesis Air Filtration System can be installed on
units that use a center discharge duct through the 14-1/4" x
14-1/4" (±1/8") opening. Installing units with the center dis­charge duct go to Section 1. "Center Discharge Duct Appli­cation Installation", on page 6.

a. Check gasket alignment of the air conditioner

over the roof opening and adjust if necessary .
Unit may be moved from below by slightly lift­ing and moving. See FIG . 13.

• Remove return air cover, ceiling template,

foam divider and air filter from the 3308120
carton.

• Locate the four (8" x 1/4-20) unit mounting

bolts, junction box cover and Romex con­nector in the 3107180 bolt kit.

• Pull down the unit's electrical cord and fas-

ten the junction box with screws to the
framing in the front of the 14-1/4" x 14-1/4"
(±1/8") opening. See FIG . 14.

b. Installing Foam Divider

• Locate the foam divider and insert it cor-

ner to corner in the 14-1/4" x 14-1/4" (±1/
8") opening with the adhesive tape up (Do
not remove paper to expose adhesive). The
foam divider should be level with the ceiling
(±1/4"). Tear off the excess at the pre-cut
perforations in divider . See FIG . 20.

11

620515, 620525, 620526, 630515 & 630516 Installation Instructions

CAUTION

CAUTION

FIG. 20

Base Pan

Upside
Down
Foam
Divider

Place Foam Divider in
(14-1/4" x 14-1/4" (±1/8")
Ceiling Opening against
Base Pan Bottom

c. Install Ceiling T emplate

Do Not Peel Tape Off
Adhesive

Ceiling

Foam Divider Ceiling
Level (±1/4") T ear Off
Excess

• Peel the paper off of the foam divider and

stick it in place on the center of the rear
flange of the return air opening on the ceil­ing template. See FIG . 21.

FIG. 21

Adhesive

Peel Off Paper - Center Divider - Stick To
Rear Flange On Ceiling Template

d. S tart each mounting bolt through the ceiling tem-

plate and up into the unit base pan by hand.

EVENLY tighten the three bolts to a torque
of 40 to 50 inch pounds. This will compress
the roof gasket to approximately 1/2". The
bolts are self locking so over tightening is
not necessary .

Foam Divider

If bolts are left loose there may not be ad­equate roof seal or if over tightened, damage
may occur to the air conditioner base or ceil­ing template. Tighten to specifications listed
in this manual.

e. Use Aluminum foil tape (not supplied) to seal

the ends of the foam divider to the sides of the
opening. Make sure the area behind the flange
on the ceiling template is sealed. See FIG . 22.

FIG. 22

Route wires
through Slot

Catch Flange In Groove Of
Return Air Cover

Use Aluminum Foil Tape To Seal the
Foam Divider To The Sides of 14-1/4"
x 14-1/4" (±1/8") Ceiling Opening

Make Sure To Seal
Behind Flange

Improper installation and sealing of foam di­vider will cause the compressor to quick cycle
on the cold control. This may result in fuse or
circuit breaker opening and/or lack of cool­ing.

2. Center Discharge Duct Application Installation
Note: If using non-center duct installation, go to Section 1.
"All Non-Center Duct Installations", on page 1 1.
Important: A duct adapter (not supplied) must be installed
between the unit discharge and the customer installed cen­ter duct. This duct adapter must be approved by Dometic.

a. Check gasket alignment of the air conditioner

over the roof opening and adjust if necessary .
Unit may be moved from below by slightly lift­ing and moving. See FIG . 13.

• Remove return air cover, ceiling template,

foam divider and air filter from the 3308120
carton.

• Locate the four (8" x 1/4-20) unit mounting

bolts, junction box cover and Romex con­nector in the 3107180 bolt kit.

• Pull down the unit's electrical cord and fas-

ten the junction box with screws to the
framing in the front of the 14-1/4" x 14-1/4"
(±1/8") opening. See FIG . 14.

b. Installing Foam Divider

• Cut notch in the center section of the foam

divider to fit (approximately 2 x 8 inches)
snugly around duct. See FIG. 23.

12

FIG. 23

Foam
Divider

Tape Covered
Adhesive

Mark And Cut 2” x 8”
Opening For Center Duct

620515, 620525, 620526, 630515 & 630516 Installation Instructions

CAUTION

CAUTION

CAUTION

• Place the foam divider in the return air open-

ing above the center duct before installing
ceiling template.

c. Install Ceiling T emplate

• Apply a piece of foam weather stripping (not

supplied) to the upper side of ceiling tem­plate to make a seal between it and the
duct. Use a soft piece of foam weather strip
1 x 3/4 x 10 inches. See FIG. 24.

FIG. 24

Weather Strip

d. S tart each mounting bolt through the ceiling tem-

plate and up into the unit base pan by hand.

EVENLY tighten the three bolts to a torque
of 40 to 50 inch pounds. This will compress
the roof gasket to approximately 1/2". The
bolts are self locking so over tightening is
not necessary .

Stick Weather Strip To Top
Of Ceiling Template

Ceiling
Template

If bolts are left loose there may not be ad­equate roof seal or if over tightened, damage
may occur to the air conditioner base or ceil­ing template. Tighten to specifications listed
in this manual.

e. Use Aluminum foil tape (not supplied) to seal

the ends of the foam divider to the sides of the
opening. Make sure the area behind the flange
on the ceiling template is sealed. See FIG . 22.

Improper installation and sealing of foam di­vider will cause the compressor to quick cycle
on the cold control. This may result in fuse or
circuit breaker opening and/or lack of cool­ing.

H. Wiring The System

Reach up into the return air opening and pull the re-

maining wires down.

1. Connection Of Low V oltage Wires

Disconnect the positive (+) 12 volt DC termi­nal at the supply battery. Damage to equip­ment could occur if the 12 volt DC is not shut
off.

Note: If solar panel is installed see instructions packaged

with solar panel option.
Note: If using the Genesis Air Filtration System step "b" is
to be completed when installing the decorative cover.

a. Route Remote Temperature Sensor cable, if

applicable, and attach it to the connector that
matches its color in the control box.

b. Connect the previously run 12 VDC to the red

an d black wires protruding from the control box.
(In multiple zone installations, this needs to be
done at only one zone.) Connect +12 VDC to
the red wire; –12 VDC to the black wire.

c. Connect the previously run furnace thermostat

wires (if applicable) to the blue wires protruding
from the control box. The polarity of these
connections does not matter.

d. Connect the previously run Energy Manage-

ment System wires (if applicable) to the yellow
wires protruding from the control box. The polar­ity of these connections does not matter.

e. Terminate the 4-conductor control cable(s) pro-

truding into the 14-1/4" x 14-1/4" (±1/8") roof
opening. The cable(s) must be terminated with
a telephone RJ-11-6C4P connector. Refer to the
crimp tool manufacturer for crimping instruc­tions.

Important: RJ-11-6C4P connectors must be installed

as shown in FIG. 8A, 8B & 8C.

f. Plug the control cable(s) into the telephone

jack(s) on the control box. (It does not matter
which one.)

g. Locate the ambient sensor plug coming from

the unit, and attach it to the connector that
matches its color in the control box.

2. Connection Of 120 Volt Power Supply

f. Cut the opening in the center duct using the

discharge opening in the ceiling template for a
pattern. Seal the center duct to the ceiling tem­plate using foil tape, foam insulation or silicon
sealant.

Disconnect 120 volt AC. Failure to follow these
instructions could create a shock hazard
causing death or severe personal injury.

13

620515, 620525, 620526, 630515 & 630516 Installation Instructions

Micro-Therm

Filter

System

FILTER
RESET

CLEAN
FILTER

a. Route power supply line through Romex con-

nector into junction box on side away from the
ceiling template. Tighten connector, being care­ful not to pinch or short wires.

b. Connect white to white; black to black; and

green to green or bare copper wire using appro­priate sized twist connectors.

This product is equipped with a 3-wire
(grounded) system for protection against
shock hazard. Make sure that the appliance is
wired into a properly grounded 120 volt AC
circuit and the polarity is correct. Failure to do
so could result in death, personal injury or
damage to the equipment.

c. Tape the twist wire connectors to the supply

wire to assure they don't vibrate off.

d. Push the wires into the box.
e. Install the cover onto the junction box.

I . Installing Decorative Inside Cover



 Installing unit with 3105007 or 3105935 Return



Air Cover. For Genesis Air Filtration System
Return Air Kit, see page 14.

1. Remove the return air grill from the return air cover.

2. Place the return air cover up to the ceiling tem­plate.

3. Install cover to template with #8 x 3/8” blunt point
Phillips head screws provided (6 required).

4. Reinstall filter return air grill into return air cover.
Align tabs with mating notches and snap into place

5. Install two hole plugs into screw holes in back of
return air cover. See FIG. 24.

FIG. 24

Hole
Plugs

6. This completes the installation of the air conditioner.
We recommend that power be supplied to the air
conditioner and check for proper operation. Refer to
Operating Manual or Users Guide for a description

of the air conditioner operation.

Return Air
Cover

Return
Air Grill







Installing unit with 3308120 Genesis Air Filtra­tion System Return Air Kit. For 3105007 or
3105935 Return Air Kit, see page 14.

FIG. 25

Genesis Air Filtration System
Return Air Kit

Foam
Divider

Ceiling
Template

Slider

Filter

Return Air
Cover

Grill

Micro-ThermFilter System

AN

LE

C

R

E

R
E

T

T
L

L

I

F

FI

T
E
S

E

Handle

R

1. Install the slider in the return air cover and raise it
to the ceiling template. Route the filter indicator
wires from the return air cover through the template
slot leaving about 3” between. Place the front of
the return air cover against the ceiling and slide
towards the rear. The flange on the ceiling tem­plate will catch in the groove on the return cover.
Adjust the position (right to left) and install the front
two screws. St art and tighten the remaining screws
to hold it in place. Connect together the wires from
the thermostat, unit and filter indicator .

Note: If solar panel is installed see instructions packaged

with solar panel option.

a. Connect the red wire from the unit, the red wire

from the filter indicator light with the red DC
positive power lead. See FIG . 21.

b. Connect the black (-12V) wire from the unit,

the black wire from the filter indicator light with

the black (-12V) power lead.
Note: Number 10 cabinet screw can be used to replace the
two front screws when the ceiling material is hard.

2. Tighten the screws holding the return air cover . Slide
the filter from the right side (looking toward the RV
front) over the wires. Make sure the wires are above
the filter and are out of its way .

3. Place grill on return air cover and snap in place,

and install decal on end over circuit board.

4. Place slide handle through slots in grill into the

slide posts. Handle will fit in either direction.

5. This completes the installation of the air conditioner .
We recommend that power be supplied to the air
conditioner and check for proper operation. Refer to
Operating Manual or User’s Guide for a description
of the air conditioner operation.

14

620515, 620525, 620526, 630515 & 630516 Installation Instructions

ON

ON

ON

SLIDE
SWITCH

OPEN

ROCKER
SWITCH

J. System Configuration, Reset & Check Out

Now that the system is installed, it is necessary to check all
operations and then configure the electronics. Refer to the
Operating manual for a description of the air conditioner
operation.

1. Electronic Control Kit Configuration
Depending on the equipment options installed by the
recreational vehicle manufacturer, the appropriate dip

switches will need to be switched to the "ON" position.
Placing the switch in the "ON" position selects that
option. See FIGS. 26, 26A & 26B.

FIG. 26

Dip Switches

FIG . 26A FIG. 26B

12 345

HEAT STRIP

ZONE 2
ZONE 3

ZONE 4

678

FURNACE
DIFFERENTIAL
STAGE
GEN START

SLIDE
SWITCH

All Switches "OFF"

All Switches "OFF"

1

HEAT STRIP

2

ZONE 2

3

ZONE 3

4

ZONE 4

5

FURNACE

6

DIFFERENTIAL

7

STAGE

8

GEN START

ROCKER
SWITCH

Note: Dip switches are in the "OFF" position when shipped
from the factory. The dip switches are visible through the
opening in the ceiling template into the control box.Dip
switches can be either a rocker or sliding style of a switch.

See FIGS. 26, 26A & 26B.

Important: Dip switch damage will occur if they are

not set in the proper manner. A ball point pen or similar
object that will slip in the switch slot, can damage the
switch causing loss of connection. Use only a small flat
blade screw driver (wider than the dip switch slot) to
move the dip switch. See FIG. 26C.

b. Heat strip selection: Units with a heat strip, the

#1 dip switch will be in the "ON" position.

c. Furnace selection - when a furnace has been

connected to a zone, place the furnace dip
switch "ON" for that zone.

FIG . 26C

Use Flat Blade Screw-

DO NOT USE
BALL POINT
PEN T o Move

driver Wider Than Dip
Switch Slot To Move Dip
Switch

Dip Switch

12 345

678

Not Correct

12 345

678

Correct

d. Differential - differential is the temperature differ-

ence between the "ON/OFF" cycle of the ther­mostat in the furnace mode. The normal differ­ential is preset in the circuit board with the dip
switch set to the "OFF" position. In some
situations, it may be necessary to decrease the
differential. The location of the thermostat may
create a condition where the normal differential
will not maintain your comfort zone. If this
occurs, the differential can be shortened by
placing the differential dip switch to the "ON"

position.
Note: Setting the differential dip switch should only be
required when installation conditions are less than desirable
and is not covered under the limited warranty.

e. Stage selection - stage is not used on these

units. Leave in the "OFF" position.

f. Gen start selection - leave in the "OFF" position.
g. Replace the unit electrical box cover.
h. Repeat this procedure for each additional zone.

2. System Reset
After setting the dip switches in the electronic
control kit, do a system reset.
a. Turn the ON/OFF switch to the "OFF" position.
b. Simultaneously depress and hold the MODE

an d ZONE push-buttons while turning the ON/
OFF switch to "ON". FF should appear in LCD
display until the mode and zone push-buttons
are released.

c. When a dip switch is turned on after initial

configuration, a system reset will need to be
done before the Comfort Control Center™ will
recognize the updated selection.

3. System Checkout
Verify that all features of the installed system work.
Check fan speeds, cooling mode, heat pump mode,
furnace (if connected) and heat strip. If the features
do not work, check all wiring and confirm that the
correct options have been selected on the Elec­tronic Control Box. See Comfort Control Center™
Operating Instructions.

15

620515, 620525, 620526, 630515 & 630516 Installation Instructions

REAR REMOTE SENSOR
(Required

with Second

Air

Conditioner)

14-1/4" x 14-1/4"
(±1/8”)

OPENING

14-1/4" x 14-1/4"
(±1/8”)

OPENING

OPTIONAL

FURNACE

FURNACE

2

WIRES

OPTIONAL FRONT
REMOTE

SENSOR

12V DC INPUT
2

WIRES

FURNACE

4-CONDUCTOR
CONTROLCABLE

BREAKER BOX

115V AC

REAR A/C

4-CONDUCTOR
CONTROLCABLE

115V AC
FRONT A/C

FURNACE
2

WIRES

DOMETIC COMFORT
CONTROL

CENTER

FIG. 27

4-CONDUCTOR
CONTROLCABLE

DOMETIC COMFORT
CONTROL CENTER

FURNACE
2 WIRES

BREAKER BOX

14-1/4" x14-1/4"
(±1/8”) OPENING

4-CONDUCTOR
CONTROLCABLE

12VDCINPUT
2 WIRES

115V AC
FRONT A/C

115V AC
REAR A/C

FURNACE

OPTIONAL FRONT
REMOTE SENSOR

REAR REMOTE SENSOR
(RequiredwithSecond
Air Conditioner)

14-1/4" x14-1/4"
(±1/8”) OPENING

OPTIONAL

FURNACE

FURNACE
2 WIRES

620515, 620525 & 620526 WIRING

DIAGRAM

DIRTY FILTER

630515 & 630516 WIRING DIAGRAM

PASSED

DIELECTRIC

A/C
POWER
MODULE
BOARD

LOAD SHED

LOAD SHED

FURNACE
FURNACE

12V -

12V +

SOLAR OR

INDICATORS

IF USED

BLK

P3

YEL

K6

F1

3 AMP
FUSE

BLU

RED

YEL

COM

NO

REMOTE

SENSOR

CABLE

BLU

CONTROL

WHITE

P4

T5

BLK

BLU

FREEZE

WHITE

P5

P6

T3

RJ-11 CABLE
TO COMFORT

CONTROL

BLK

BLK

P2

AMBIENT

SENSOR

BLK

K1

COM

NO

T1

T2

P1

RED

YEL

BLK

BLU

BLK

MOTOR

WHT

BLK

GRN/YEL

WHT

BLU

GRN/YEL

BRN

WHT

WHT

BLK

REVERSING
VALVE

RUN CAP

FAN

C

HERM

GRN/YEL

WHT

START

CAP

COMPRESSOR

O.L.

R

S

C

RED

RED

(OPT)

16

RED

PTCR

FIELD WIRING

FACTORYWIRING

SPLICE CAP

115 VA C
60 Hz,

1o

USE COPPER
CONDUCTORS
ONLY

3308032.121