Dometic 620515.321 User manual

1
RECORDTHISINFORMATION
FORFUTUREREFERENCEBEFORE
INSTALLINGTHEUNIT:
ModelNumber
SerialNumber
Date Purchased
Place of Purchase
INSTALLATION
INSTRUCTIONS
USA
SERVICEOFFICE
DometicCorporation
509SouthPoplarStreet
LaGrange,IN46761
260-463-4858
CANADA
DometicDistribution
866LangsDrive
Cambridge,Ontario
CANADAN3H2N7
[phone]
For Service Center
AssistanceCall:
800-544-4881
MODELS
MODEL
620515, 620525, 620526
Roof Top Air Conditioner &
630515, 630516
Roof Top Heat Pump
USED WITH
3106615 Air Distribution Box Kit and
3109228.001 Duo-Therm Comfort Control CenterTM
REVISION
FormNo. 3109529.0691/04
(Replaces3109529.051)
(French3109604.060)
©2004DometicCorporation
LaGrange,IN 46761
C
U
S
620515.321
620515.326
620515.421
620525.321
620525.326
620525.421
620526.321
620526.326
630515.321
630515.326
630515.421
630516.321
630516.326
This manual must be read and un-
derstood before installation, ad-
justment, service, or maintenance
is performed. This unit must be in-
stalled by a qualified service tech-
nician.Modificationofthisproduct
can be extremely hazardous and
could result in personal injury or
property damage.
Lire et comprendre ce manuel avant de
procéderàl'installation,àdesréglages,
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.
Important:TheseInstructions
must stay with unit.
Owner read carefully.
This Unit Is Designed For OEM Installation. All Initial
Installations Must Be Approved By Dometic Corporation

2
A. Productfeaturesorspecificationsasdescribedorillus-
trated are subject to change without notice.
B. This Air Conditioner Is Designed For:
1. Installationonarecreationalvehicleduringthetime
thevehicleismanufactured.
2. Mountingontheroofofarecreationalvehicle.
3. Roofconstructionwithrafters/joistsonminimumof
16 inch centers.
4. Minimum of 2.00 inches and maximum of 4.00
inches distance between roof to ceiling of recre-
ational vehicle. Alternate installation methods will
allowforroofs more than 4.00 inches thick.
C. Theabilityoftheairconditionertomaintainthedesired
insidetemperaturedependsontheheatgainoftheRV.
Somepreventativemeasurestakenbytheoccupantsof
the RV can reduce the heat gain and improve the
performance of the air conditioner. During extremely
highoutdoortemperatures,theheatgainofthevehicle
may be reduced by:
1. Parking the RV in a shaded area
2. Usingwindowshades(blindsand/orcurtains)
3. Keeping windows and doors shut or minimizing
usage
4. Avoidingtheuseofheatproducingappliances
Operation on High Fan/Cooling mode will give optimum or
maximum efficiency in high humidity or high outside tem-
peratures.
Startingtheairconditionerearlyinthemorningandgivingit
a "head start" on the expected high outdoor ambient will
greatly improve its ability to maintain the desired indoor
temperature.
Foramorepermanentsolution to high heat gain,accesso-
rieslikeA&Eoutdoorpatioandwindowawningswillreduce
heat gain by removing the direct sun. They also add a nice
areatoenjoycompany during the coolof theevening.
D. Condensation
Note: The manufacturer of this air conditioner will not be
responsiblefordamagecausedbycondensedmoistureon
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 re-
moves this moisture from the air during normal operation.
Keepingdoorsandwindowsclosedwhenthisairconditioner
is in operation will minimize condensed moisture on cold
surfaces.
GENERAL INFORMATION
620515, 620525, 620526, 630515 & 630516 Installation Instructions
SAFETY INSTRUCTIONS
Thismanualhassafetyinformationandinstructions
to help users eliminate or reduce the risk of acci-
dentsandinjuries.
RECOGNIZE SAFETY INFORMATION
Thisisthesafety-alert symbol.Whenyousee this
symbolin thismanual, bealert tothe potentialfor
personalinjury.
Followrecommendedprecautionsand safeoper-
atinginstructions.
UNDERSTAND SIGNAL WORDS
Asignal word ,WARNING ORCAUTION isused
withthesafety-alertsymbol.They give thelevelof
riskforpotentialinjury.
indicates a potentially hazard-
oussituation which,if notavoided, could result in
deathorseriousinjury.
indicates a potentially hazard-
ous situation which, if not avoided may result in
minorormoderate injury.
used without the safety alert
symbol indicates, a potentially hazardous situa-
tion which, if not avoided may result in property
damage.
Readandfollowallsafetyinformationandinstruc-
tions.
!
WARNING
!
CAUTION
CAUTION
!

3
*Maximum unit performance achieved at full rated voltage.
** For lengths over 24 ft., consult the National Electrical Code.
*** Dometic Corporation gives general guidelines for generator requirements. These guidelines come from experiences people have
had in actual applications. When sizing the generator, the total power usage of your recreational vehicle must be considered. Also
keep in mind generators lose power at high altitudes and from lack of maintenance.
A. Precautions
Improperinstallationmaydamage equipment/
could endanger life, cause serious injury and/
or property damage.
1. ReadInstallation and Operating Instructions care-
fully before attempting to start your air conditioner
installation.
2. DometicCorporationwillnotbeliableforanydam-
ages or injury incurred due to failure in following
these instructions.
3. InstallationmustcomplywiththeNationalElectrical
Code ANSI/NFPA-70 and CSA Standard C22.1
(latest edition and any State or Local Codes or
regulations.
4. DONOTaddanydevicesoraccessoriestothisair
conditionerexceptthosespecificallyauthorizedby
Dometic.
5. This equipment must be serviced by qualified per-
sonnelandsomestatesrequirethesepeopletobe
licensed.
INSTALLATION INSTRUCTIONS
620515.321 620526.321
620515.326 620526.326
620515.421 620525.321 630516.321 630515.321
MODELNUMBER 620525.421 620525.326 630516.326 630515.421 630515.326
NominalCapacity(BTU/HR)*13,500 13,500 15,000 13,500 13,500
ElectricalRating 115 VAC, 60 Hz., 1 PH.
Compressor Rated Load Amps 11.5 12.4 12.0 12.0 12.4
Fan Motor Rated Load Amps 3.1 3.1 3.3 3.1 3.1
Compressor Locked Rotor Amps 50.0 60.0 64.0 50.0 60.0
Fan Motor Locked Rotor Amps 8.8 8.8 8.5 8.8 8.8
SCFM- HighSpeedMax./Min. 335/250 380/250 335/250
Refrigerant (R22) oz. 17 15.5 21.5 19.5 24.5
MinimumWireSize** 12 AWG Copper up to 24 ft.
AC Circuit Protection 20 Amp Time Delay Fuse or
(User Supplied) HACR Circuit Breaker
DCCircuitProtection Installation must comply with all National,
(User Supplied) State, Province and/or Local Electrical Codes
Installed Weight (Pounds) 102 102 104 102 102
Minimum Generator 1 UNIT 3.5 KW
Size *** 2 UNITS 5.0 KW
620515, 620525, 620526, 630515 & 630516 Installation Instructions
SPECIFICATIONS
B. Choosing Proper Location For The Air
Conditioner
Thisairconditionerisspecificallydesignedforinstallationon
theroofofarecreationalvehicle(RV).Whendeterminingyour
coolingrequirements,thefollowingshouldbeconsidered:
•Size of RV;
•Windowarea(increasesheatgain);
•Amountof insulationin walls androof;
•GeographicallocationwheretheRV will be used;
•Personalcomfortlevelrequired.
1. NormalLocation-Theairconditionerisdesignedto
fitoveranexistingroofventopening.Whenthevent
isremoved, it normallycreatesa14-1/4"X14-1/4"
(±1/8")opening.
2. Other Locations-When no roof vent is available or
anotherlocationisdesired,thefollowingisrecom-
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.
FIG. 1
Roof Vent
Opening

4
FIG. 3
b. Fortwounitinstallations:InstalloneAirCondi-
tioner 1/3 and one Air Conditioner 2/3’s from
front of RV and centered from side to side.
Itispreferredthattheairconditionerbeinstalledinarelatively
flatandlevelroofsectionmeasuredwiththeRVparkedon
alevelsurface.
Note:A8°slanttoeitherside,orfronttoback,isacceptable
for620515,620525,620526,630515and630516series.
620515, 620525, 620526, 630515 & 630516 Installation Instructions
FIG. 2
3. AfterLocation Has BeenSelected:
a. Check for obstructions in the area where air
conditioner will be installed. See FIG. 3 & 4.
b. The roof must be designed to support 130
poundswhen the RV is in motion. Normally a
200lb.staticloaddesignwillmeetthisrequire-
ment.
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. Wa-
ter standing around the air conditioner may
leak into the interior causing damage to the
product and the RV.
c. Check inside the RV for air box obstructions
(i.e. door openings, room dividers, curtains,
ceiling fixtures, etc.) See FIG. 3 & 4.
CAUTION
2 7/8
2 7/8
+
-
1/8
4
4
14-1/4" x 14-1/4”
(±1/8”) OPENING
21-3/8”
KEEP THESE AREAS
FREE OF OBSTRUCTIONS
12"
REAR
OF
UNIT
4"
4"
4-1/8”
7-1/8”
7-1/8”
Center Line
of Unit
FIG. 4
C. Roof Preparation
1. OpeningRequirements-Beforepreparingtheceil-
ing opening, the type of system options must be
decided upon. If a remote sensor is to be used,
provisionmustbemadeforit.Iftheloadshedoption
istobeused,wiresmustberunfromtheloadshed
control to the Dometic A/C. If a furnace is to be
connected,wiresmustberunfromthefurnacetothe
DometicA/C. Read allofthe following instructions
beforebeginningtheinstallation.
Ifaroofventopeningwillnotbeuseda14-1/4"x14-
1/4"(±1/8")openingmustbecutthroughtheroofand
ceiling of the RV. This opening must be located
betweentheroofreinforcingmembers.
There may be electrical wiring between the
roof and the ceiling. Disconnect 115 volt AC
power cord and the positive (+) 12 volt DC ter-
minal at the supply battery. Failure to follow
this instruction may create a shock hazard
causing death or severe personal injury.
9-1/2"
39"
28-3/4"
20"
2-1/2"
22"
L
1/2L L
2/3L 1/3L
9-1/2"
28-3/4" 39"

5
620515, 620525, 620526, 630515 & 630516 Installation Instructions
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. Wa-
ter standing around the air conditioner may
leak into the interior causing damage to the
product and the RV.
D. Wiring Requirements
1. Route a copper 12 AWG, with ground, 115 VAC
supplylinefromthefuseorcircuitbreakerboxtothe
roofopening.
a. This supply line must be located in the front
portionofthe14-1/4"x14-1/4"(±1/8")opening.
b. ThepowerMUSTbeonaseparate20amptime
delayfuseor HACR circuitbreaker.
c. Make sure that at least 15" of supply wire
extends into the roof opening. This ensures
easy connection at the junction box.
d. WiringmustcomplywithallNational,Stateand
LocalWiringCodes.
e. Useasteelsleeveandagrommetorequivalent
methods to protect the wire where it passes
intotheopening.
2. Routeadedicated12VDCsupplyline(18-22AWG)
from the RV's converter or battery to the roof
opening.
a. This supply line must be located in the front
portionofthe14-1/4"x14-1/4"(±1/8")opening.
b. Make sure that at least 15" of supply wire
extendsinto theroofopening.
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
connectorendmustberoutedtotheroofopeningof
the system which it will control. Make sure that at
least 15" of the sensor cable extends into the roof
opening.RefertotheRemoteSensorInstructions
for details of the installation.
4. Ifafurnaceistobecontrolledbythesystem,thetwo
furnacethermostatleadsmustberoutedtotheroof
opening of the air conditioner that will control it.
Makesure thatat least 15"of thefurnace thermo-
stat wires extend into the roof opening.
5. IfanEnergyManagementSystem(loadshedfea-
ture)istobeusedwiththecontrol,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
wiresextend intotheroofopening.
The14-1/4" x 14-1/4" (±1/8")openingispartofthe
returnairsystemoftheAirConditionerandmustbe
finished in accordance with NFPA Standard 501C
Section 2.7.2.
2. RoofVentRemoval
a. Unscrewandremovetheroofvent.
b. Remove all caulking compound around open-
ing.
c. Sealallscrewholesandseamswheretheroof
gasket is located. Use a good grade of all
weathersealant.
d. Iftheopeningexceeds14-3/8"x14-3/8", itwill
be necessary to install spacers.
e. If the opening is less than 14-1/8" x 14-1/8", it
mustbeenlarged.
3. NewOpening-(InstallationOtherThanVentOpen-
ing)
a. Marka14-1/4"x14-1/4" (±1/8") square onthe
roofandcarefullycuttheopening.
b. Using the roof opening as a guide, cut the
matching hole in the ceiling.
d. Theopeningcreatedmustbeframedtoprovide
adequate support and prevent air from being
drawnfromtheroofcavity.Lumber3/4"ormore
in thickness must be used. Remember to pro-
vide an entrance hole for power supplies, fur-
nacewiring,4-conductorcontrolcable,remote
sensor and load shed (Energy Management
System) options as desired.
FIG. 5
DoNotCutRoof
Structure Or
Rafters
Good-Rafters
SupportedBy
Cross Beams
GoodLocation-
BetweenRoof
Rafters
3/4" Min.
Leave Access for Power
SupplyWiring
FrameOpeningSoIt
Won't Collapse When
Bolting Down
15" min.
FIG. 6
CAUTION

6
620515, 620525, 620526, 630515 & 630516 Installation Instructions
E. DometicComfort ControlCenter™&Cable
Installation
1. Location
a. If the system is to be used WITHOUT a Re-
mote Temperature Sensor, the proper loca-
tion of the Comfort Control Center™ is very
importanttoensurethatitwillprovideacomfort-
able RV temperature. Observe the following
rules when selecting a location:
•LocatetheComfortControlCenter™54"
abovethefloor.
•InstalltheComfortControlCenter™ona
partition, not on an outside wall.
•NEVERexposeittodirectheatfromlamps,
sun or other heat producing items.
•Avoid locations close to doors that lead
outside,windowsoradjoiningoutsidewalls.
•Avoid locations close to supply registers
andthe airfrom them.
b. If the system is to be used WITH a Remote
TemperatureSensorinALLzones,theCom-
fort Control CenterTM may be mounted any-
where that is convenient in the coach. Try to
avoidhardtoreachand hard to seeareas.
•Referto theinstructions provided with the
Remote Temperature Sensor fordetails
ofinstallation.
c. A3/8"diameterholewillbeneededtoroutethe
cable through the wall. See Section D-3.
2. ControlCableInstallation
A4-conductorcontrolcablemustberoutedfromtheroof
opening to the Comfort Control CenterTM.
a. Choosetheshortest,mostdirectroutefromthe
14-1/4" x 14-1/4" (±1/8") opening to the Com-
fortControl CenterTMlocationselected.Leave
6" of cable extending through the wall. See
SectionD-6.
b. Thecontrol cable that should beused isa flat,
4-conductortelephonecable.
c. The control cablemustbeterminatedwithtwo
(2) RJ-11 telephone connectors. Refer to the
crimp tool manufacture for crimping instruc-
tions.
Important: RJ-11 connectors must be installed as
shown in FIG. 7A & 7C.
3.ComfortControlCenterTM Installation
a. CarefullyremovethebaseplatefromtheCom-
fort Control CenterTM. This may be accom-
plishedby insertingasmallscrewdriverunder
the tab on thebottom edge of the front cover
and gently prying. See FIG. 8.
b. Insertthe control cablethrough the holein the
baseplate and mounttheplatetothewallwith
two(2)screwsprovided.Checkthealignmentto
ensurelevelinstallation.
c. Install the control cable RJ-11 connector into
thebackoftheComfortControlCenter™and
gently press onto the base plate.
FIG. 7A
FIG. 7B
6. Routea4-conductorcontrolcablefromtheComfort
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
openingand6"extendfromthewallatthemounting
position of the Comfort Control Center™. See
Section E-2.
7. IntheeventthatotherAirConditionersareinstalled
(additionalzones)anadditional4-conductorcontrol
cablemustberoutedtotheotherAirConditioners.
Makesurethatat least 15" of the wire extends into
theroofopening.SeeFIG.21.
8. If an automatic generator start kit (AGS) will be
installed, a 4-conducter control cable must be
routed from the last air conditioner to location of
AGSkit.FollowAGSkitinstructionsforinstallation.
Flat Four Conductor Cable
RJ-11 Connector
Pin1
FIG.7C
Insert Screwdriver
under Tab
Insert Screwdriver
under Tab
MODE MODE
FAN
UP
DOWN
OFF ON OFF ON
ZONE
TEMP
TEMP
FIG. 8

7
620515, 620525, 620526, 630515 & 630516 Installation Instructions
4. Place the Air Box Kit inside the RV. This box
containsmountinghardwarefortheairconditioner
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.
F. Placing the Air Conditioner On The Roof
1. Remove the air conditioner from the carton and
discardcarton.
2. Place the air conditioner on the roof.
This unit weighs approximately 100 pounds.
Topreventbackinjury,useamechanicalhoist
to place Air Conditioner on roof.
3. Lift and place the unit over the prepared opening
using the gasket on the unit as a guide.
Do not slide the unit. This may damage the
neoprene gasket attached to the bottom and
may create a leaky installation.
FIG. 10
FRONT
CAUTION
c. Remove the upper duct from the ceiling tem-
plateandlocateitovertheblowerdischarge.
Note:Theedgewithouttheflangeinstallstowardtherearof
the RV. d. Use two (2) #10 x 3/8" screws to hold the duct
tothebasepan.Theholesarepre-punchedin
thepanforeachlocation.
G. Installing The Air Conditioner
1. DischargeDuct&CeilingTemplateInstallation.
a. Remove the air box and mounting hardware
from their carton. The upper duct is shipped
insidethelowerductwhichispartoftheceiling
template.
b. Locate the three 8" x 1/4" x 20 unit mounting
bolts,junctionboxcover andRomexconnector
in the 3107180.006 bolt kit.
UPPER
DUCT
SIDE W ITHOU
T
TAB T O R EAR
OF A PPLIANC
E
LOWER
R
DUCT
FIG. 11
e. Checkgasketalignmentoverroofopeningand
adjust if necessary. Unit may be moved from
below by slightly lifting. See FIG. 12.
f. Reachupintothereturnairopeningandpullthe
electricalcorddown.
g. Mount the junction box to the ceiling in the
followinglocation.See FIG. 13.
•Locate the junction box near ceiling tem-
plate.Locateoppositedischargeductend
and on same side as discharge duct. See
FIG.14
•Centerlongsideofjunctionboxoncenterof
mountingbolt.
•Placeedgeofboxapproximately1/2"from
edgeof ceilingtemplate.
•Attach junction box to ceiling of coach
usingtwo(2)#10x1/2" screws provided.
FIG. 9
FIG. 12 Center Unit From Below
Roof
Gasket

8
620515, 620525, 620526, 630515 & 630516 Installation Instructions
H. Wiring Of System
Reachup into thereturnairopeningandpull the remaining
wiresdown. See FIG.13.
1. ConnectionOfLowVoltageWires
Disconnect the positive (+) 12 volt DC termi-
nal at the supply battery. Damage to equip-
ment could occur if the 12 volt DC is not shut
off.
a. RouteRemoteTemperatureSensorcable,if
applicable, and attach it to the connector that
matchesitscolorprotrudingfromthereturnair
opening.
CAUTION
FIG. 13
Gasket
JunctionBox
Low Voltage Wires
ControlCables
Remote Sensor
h. InstalltheRomexconnectorinthejunctionbox.
i Measure the ceiling thickness:
•If the distance is 2" to 3" remove the
perforatedtabsfromthebottomductonly.
•If the distance is 3" to 4" install ducts as
received.
•If the distance is 4" to 6" (maximum thick-
ness),optionalDuctandBoltKitsareavail-
able:
Duct (PartNo.318556.000)
Bolts (PartNo.3100895.006)
FIG. 14
Junction
Junction Box
Air Conditioner
14-1/4" x 14-1/4" (±1/8")
Discharge Air
Ceiling
MEASURE
CEILING
THICKNESS
GASKET
CENTER A/C
FROM BEL OW
FIG. 16
j. Take the ceiling template and slide the lower
ductover theupperduct.
k. Holdtheceilingtemplatewithonehandandwith
the other, install the three 1/4" mounting bolts
through the template and into the base pan.
•Finger-tightenthe(3)boltsandcheckalign-
ment.Thereshouldbeanequalopeningon
eachsideand therearflangemustbe tight
againsttheroofopening.
•EVENLYtightentheboltstoatorqueof
40to 50 inch pounds. This will com-
press the roof gasket to approximately
1/2". The bolts are self locking so over
tighteningisnotnecessary.
If bolts are left loose there may not be an ad-
equate roof seal or if over tightened, damage
may occur to the air conditioner base or ceil-
ing template. Tighten to torque specifications
listed in this manual.
CAUTION
FIG. 15

9
b. Connect the previously run 12 VDC to the red
and black wires protruding from the return air
opening. (In multiple zone installations, this
needstobe doneat only one zone.) Connect
+12VDCtotheredwire;–12VDCtotheblack
wire.
c. Connectthepreviouslyrunfurnacethermostat
wires(ifapplicable)tothebluewiresprotruding
fromthereturnairopening.Thepolarityofthese
connections does not matter.
d. Connect the previously run Energy Manage-
mentSystemwires(ifapplicable)totheyellow
wiresprotrudingfromthereturnairopening.The
polarity of these connections does not matter.
e. Terminatethe4-conductorcontrolcable(s)pro-
truding into the 14-1/4" x 14-1/4" (±1/8") roof
opening.Thecable(s)mustbeterminatedwith
atelephoneRJ-11connector.Refertothecrimp
toolmanufacturerforcrimpinginstructions.
Important: RJ-11 connectors must be installed as
shown in FIG. 7A & 7C.
f. Plug the control cable(s) into the telephone
jack(s) protrudingfromthereturnairopening.(It
doesnot matterwhich one.)
2. ConnectionOf115VoltPowerSupply
Disconnect115 voltAC.Failureto follow these
instructions could create a shock hazard
causing death or severe personal injury.
a. Route power supply line through Romex con-
nectorandintojunctionboxonsideawayfrom
theceiling template.Tightenconnector.
This product is equipped with a 3-wire
(grounded) system for protection against
shock hazard. Make sure that the prduct is
wired into a properly grounded 115 volt AC
circuitandthepolarityiscorrect.Failuretodo
so could result in death, personal injury or
damage to the equipment.
b. Connect white to white; black to black; and
greentogreenorbarecopperwireusingappro-
priate sized twist connectors.
c. Tape the twist wire connectors to the supply
wireto assuretheydon'tvibrateoff.
d. Push the wires into the box.
e. Install the cover onto the junction box.
FIG. 17
Junction
BoxCover
Junction Box
Air Conditioner
Mounting bolts
14-1/4" x 14-1/4" (±1/8")
Opening
Discharge Air
Duct
Ceiling
Template
I. AirBoxInstallation
1. Removethetwofilter-grillesfromtheairbox.
2. Slide the air box over the ceiling template.
3. Installthefour(4)sharppointedscrewsthroughthe
airboxlegsandintothepre-punchedholesinceiling
template.
Note: There are four optional mounting holes on the outer
edge of the return air opening for which no screws are
provided.Theseareonlyrequiredwhereanunevenceiling
does not allow proper fitting of the air box.
4. Install the filter-grilles by pushing them into place.
See FIG. 18.
C
ELING T EMPLATE AIR BOX
FIG. 18 CEILING TEMPLATE AIRBOX
J. System Configuration,Reset&CheckOut
Nowthatthesystemisinstalled,itisnecessary tocheckall
operationsand thenconfigure the electronics.Refer tothe
operating manual for a description of the air conditioner
operation.
1. ElectronicControlKitConfiguration
Depending on the equipment options installed by the
recreational vehicle manufacturer, the appropriate dip
switches will need to be switched to the "ON" position.
See FIG. 19. Placing the switch in the "ON" position
selects that option.
Note:Dipswitchesareinthe"OFF"positionwhenshipped
fromthefactoryexceptformodelssuppliedwiththeheatstrip
factoryinstalled,(620515).Forthismodel,the#1dipswitch
will be in the "ON" position. To gain access to the dip
switches, theshroudmustberemovedfromtheunit.Remove
the four mounting screws around the perimeter of the unit.
Nextremovetheelectricalboxcover.(Theelectricalboxwill
be on the curb side of the RV after installation).
620515, 620525, 620526, 630515 & 630516 Installation Instructions

10
b. Heatstripselection-Forunitswitha heat strip
installedatthefactory (Model 620515), the #1
dipswitchwillbeinthe "ON"position.Allother
models willhavethedipswitchesinthe"OFF"
position.
c. Furnace selection - when a furnace has been
connected to a zone, place the furnace dip
switch "ON" for that zone.
d. Differential-differentialisthetemperaturediffer-
encebetweenthe"ON/OFF"cycleofthethermo-
stat. The normal differential is preset in the
circuitboardwiththedipswitchsettothe"OFF"
position. In some situations, it may be neces-
sarytodecreasetheDifferential.Thelocationof
the thermostat may create a condition where
the normal Differential will not maintain your
comfortzone.Ifthisoccurs,theDifferentialcan
be shortened by placing the Differential dip
switch to the "ON" position.
Note: Setting the Differential dip switch should only be
requiredwheninstallationconditionsarelessthandesirable
andisnot covered under the limitedwarranty.
e. Stage selection - stage is not used on these
units. Leave in the "OFF" position.
f. Genstartselection-leaveinthe"OFF"position.
g. Replacetheunit electricalboxcover.
h. Replacetheshroud.
i. Repeatthisprocedureforeachadditionalzone.
620515, 620525, 620526, 630515 & 630516 Installation Instructions
a. Zone selection - when two or more units are
installedand controlled byone Comfort Con-
trol CenterTM, the second unit becomes Zone
2,thethirdunitZone3andthefourthunitZone
4.Theappropriatezonedipswitchmustbeset
ineachelectroniccontrolkitforZone2,3and4.
FIG. 19
DIP
SWITCHES
DIP
SWITCHES
12 345
HEAT STRIP
ZONE 2
ZONE 3
ZONE 4
FURNACE
ON
678
DIFFERENTIAL
STAGE
GEN START
2. System Reset
After setting the dip switches in the electronic
control kit, do a system reset.
a. TurntheON/OFFswitchtothe"OFF"position.
b. Simultaneously depress and hold the MODE
and ZONE push-buttonswhileturning theON/
OFFswitch to "ON".FFshould appear inLCD
display until the mode and zone push-buttons
arereleased.
c. When a dip switch is turned on after initial
configuration, a system reset will need to be
donebeforetheComfortControlCenter™will
recognizetheupdatedselection.
3. System Checkout
We recommend that power be supplied to the air
conditioner and check for proper operation. Verify
that all features of the installed system work. See
ComfortControlCenter™OperatingInstructions.
Checkfanspeeds,coolingmode,heatpumpmode,
furnace(ifconnected)andheatstrip.Ifthefeatures
do not work, check all wiring and confirm that the
correct options have been selected on the Elec-
tronicControlBoard.

11
REAR REMOTE SENSOR
(Required with Second
Air Conditioner)
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
14-1/4" x 14-1/4"
(±1/8”) OPENING
14-1/4" x 14-1/4"
(±1/8”) OPENING
OPTIONAL
FURNACE
OPTIONAL
FURNACE
FURNACE
2 WIRES
FURNACE
2WIRES
OPTIONAL FRONT
REMOTE SENSOR
OPTIONAL FRONT
REMOTE SENSOR
12V DC INPUT
2 WIRES
12V DC INPUT
2WIRES
FURNACE
4-CONDUCTOR
CONTROL CABLE
4-CONDUCTOR
CONTROL CABLE
BREAKER BOX
BREAKER BOX
115V AC
REAR A/C
115V AC
REAR A/C
4-CONDUCTOR
CONTROL CABLE
4-CONDUCTOR
CONTROL CABLE
115V AC
FRONTA/C
115V AC
FRONTA/C
FURNACE
2 WIRES
FURNACE
2WIRES
DOMETIC COMFORT
CONTROL CENTER
DOMETIC COMFORT
CONTROL CENTER
14-1/4"x14-1/4"(±1/8")
Opening
UnitMountingBolts
MountingLegs
Air Box
MountingLegs
Ceiling Template
Lower Discharge Air Duct
(Attached to Ceiling Template)
Framing, Return Air Duct
RoofReinforcement
Member
UpperDischarge Air Duct
Roof Line
Front
Rear
AirConditioner
RoofMountAssembly
FIG. 20
FIG. 21
620515, 620525, 620526, 630515 & 630516 Installation Instructions

12
3106613.023
T1
T2
T3
NO
COM
COM
NO
K6
K1
P6
F1
P4 P5
P1
P2
3AMP
FUSE
GRN/YEL
MOTOR
O.L.
RS
C
START CAP
PTCR
RUN CAP
FAN
C
HERM
COMPRESSOR
CONTROL
TO COMFORT
RJ-11 CABLE
REMOTE
CABLE
RED
WHT
BLK
RED
RED
WHT
BLK
YEL
RED
BRN
WHT
YEL
YEL
BLU
BLU
BLK
RED
LOAD SHED
LOAD SHED
FURNACE
FURNACE
12V -
12V +
WHT
BLK
BLK
115 VAC
60 Hz,
USE COPPER
CONDUCTORS
1o
WHT
GRN/YEL
BLK
FIELD WIRING
FACTORY WIRING
WHITE
BLK BLK
BLK
WHT
BLK
BLK
REVERSING VALVE
SENSOR
P3
SENSOR
AMBIENT
SPLICE CAP
GRN/YEL
ONLY
A/C
POWER
MODULE
BOARD
T5
BLK
WIRING DIAGRAM FOR MODELS
620515.321, 620515.326, 620515.421, 620525.321,
620525.326, 620525.421, 620526.321 & 620526.326
WIRING DIAGRAM FOR MODELS
EARLY VERSION
630515.321, 630515.326
630515.421
630516.321, 630516.326
WIRING DIAGRAM FOR MODELS
LATER VERSION
630515.321, 630515.326
630516.321, 630516.326
BLK
12V -
12V -
BLK
SOLAR OR
SOLAR OR
INDICATORS
IF USED
IF USED
DIRTY FILTER
DIRTY FILTER
12V +
12V +
RED
COM
NO
BLK
K6
T2
T3 T1 GRN/YEL
BLK
BLK
WHT
GRN/YEL
ONLY
CONDUCTORS
3106613.049
60 Hz,
60 Hz,
115 VAC
115 VAC
USE COPPER
USE COPPER
1o
CONTROL
P1
BLK
BLK
RJ-11 CABLE
RJ-11 CABLE
TO COMFORT
TO COMFORT
WHITE
MODULE
FURNACE
FURNACE
LOAD SHED
LOAD SHED
LOAD SHED
LOAD SHED
A/C
BOARD
POWER
T5
3 AMP
FUSE
BLU
YEL
BLU
YEL
P6
COM
K1
NO
WHITE
F1
P4
P3
P5
AMBIENT
SENSOR
P2
DIELECTRIC
PASSED
SENSOR
CABLE
REMOTE
FREEZE
CONTROL
BLK RED
BRN
FAN
RUN CAP
RUN CAP
HERM
C
REVERSING VALVE
REVERSING VALV E
WHT
BLK
BLK
WHT
WHT
FIELD WIRING
FIELD WIRING
SPLICE CAP
SPLICE CAP
FACTORY WIRING
START CAP
RED
PTCR
RED
MOTOR
MOTOR
BLK
YEL
RED
GRN/YEL
GRN/YEL
COMPRESSOR
COMPRESSOR
S
BLK
R
C
O.L.
O.L.
WHT
CONTROL
TO COMFORT
TO COMFORT
RJ-11 CABLE
RJ-11 CABLE
BLK
COM
LOAD SHED
LOAD SHED
YEL
RED
BLU
NO
DIRTY FILTER
IF USED
IF USED
INDICATORS
BLK
FURNACE
FURNACE
SOLAR OR
SOLAR OR
12V +
12V +
12V -
12V -
K6
T3
BLK
T2
BLK
BLU
COM
K1
NO
CABLE
FUSE
3 AMP
FACTORY WIRING
FIELD WIRING
FIELD WIRING
SPLICE CAP
SPLICE CAP
F1
LOAD SHED
LOAD SHED
YEL
P3
BOARD
MODULE
POWER
A/C
T5
P6
WHITE
WHITE
P4
BLK
P5 P2
CONTROL
FREEZE
SENSOR
REMOTE
BLK
HEATER ELEMENT
HEATER ELEMENT
GRN/YEL
WHT
T1
BLK
GRN/YEL
LIMIT SWITCH
BLK
WHT
1O
CONDUCTORS
USE COPPER
USE COPPER
3106682.036 ONLY
60 Hz,
60 Hz,
115 VAC
115 VAC
MODELS
ON SOME
ON SOME
NOT USED
O.L.
START CAP
R
WHT
BLK
BLK
RED
YEL
P1
BLK
HERM
WHT
WHT
RED
FAN
RUN CAP
RUN CAP
BRN
WHT
WHT
C
MOTOR
GRN/YEL
BLK
PTCR
RED
S
C
RED
COMPRESSOR
PASSED
DIELECTRIC
620515, 620525, 620526, 630515 & 630516 Installation Instructions