Dometic 630025.331 User manual

1
INSTALLATION & OPERATING
INSTRUCTIONS
USA
SERVICEOFFICE
DometicCorporation
509SouthPoplarStreet
LaGrange,IN46761
260-463-4858
CANADA
DometicDistribution
866LangsDrive
Cambridge,Ontario
CANADAN3H2N7
519-653-4390
For Service Center
AssistanceCall:
800-544-4881
Important:TheseInstructions
must stay with unit.
Owner read carefully.
RECORDTHISUNITINFORMATIONFOR
FUTUREREFERENCE:
Model Number
Serial Number
Date Purchased
C
U
S
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.
MODEL 630025.331
Roof-Top Heat Pump
used with
3106152.006 Mechanical Air Distribution Box
Model
630025.331
FormNo.3309038.00211/04
(French3309039.000)
©2004DometicCorporation
LaGrange,IN 46761

2
SAFETY INSTRUCTIONS
This manual has safety information and instruc-
tionsto helpusers eliminateor reducethe riskof
accidentsand injuries.
RECOGNIZE SAFETY INFORMATION
Thisisthesafety-alertsymbol.Whenyou see this
symbolinthis manual,bealert tothepotentialfor
personalinjury.
Follow recommended precautions and safe op-
eratinginstructions.
UNDERSTAND SIGNAL WORDS
Asignalword, WARNING OR CAUTIONisused
withthesafety-alertsymbol.Theygivethelevelof
riskforpotentialinjury.
indicates a potentiallyhazard-
oussituation which, ifnotavoided, couldresultin
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
!
A. Productfeaturesorspecificationsasdescribedorillustrated
are subject to change without notice.
B. This Air Conditioner Is Designed For:
1. Installationonarecreationalvehicleduringthetime
thevehicleismanufactured.
2. Mountingontheroofofarecreationalvehicle.
3. Roof construction with rafters/joists on minimum of 16
inch centers.
4. Minimum of 2.00 inches and maximum of 4.00 inches
distancebetweenrooftoceilingofrecreationalvehicle.
Alternate installation methods will allow for roofs more
than 4.00 inches thick.
C. The ability of the air conditioner to maintain the desired
insidetemperature depends ontheheat gain ofthe RV.
Somepreventativemeasurestakenbytheoccupantsofthe
RVcanreducetheheatgainandimprovetheperformanceof
theairconditioner. Duringextremelyhighoutdoortempera-
tures, the heat gain of the vehicle may be reduced by:
1. Parking the RV in a shaded area
2. Usingwindowshades(blindsand/orcurtains)
3. Keepingwindowsanddoorsshutorminimizingusage
4. Avoidingtheuseofheatproducingappliances
Operation on High Fan/Cooling mode will give optimum or
maximum efficiency in high humidity or high outside tempera-
tures.
Starting the air conditioner early in the morning and giving it a
"head start" on the expected high outdoor ambient will greatly
improveitsabilitytomaintainthedesiredindoortemperature.
Foramorepermanentsolutiontohighheatgain,accessorieslike
A&Eoutdoorpatioandwindowawningswillreduceheatgainby
removing the direct sun. They also add a nice area to enjoy
companyduringthecooloftheevening.
D. Condensation
Note: Themanufacturerofthisairconditionerwillnotberespon-
siblefor damage causedbycondensed moisture onceilingsor
othersurfaces. Aircontainsmoistureandthismoisturetendsto
condenseoncoldsurfaces.WhenairenterstheRV,condensed
moisturemay appearon the ceiling,windows, metalparts, etc.
The air conditioner removes this moisture from the air during
normaloperation.Keepingdoorsandwindowsclosedwhenthis
airconditionerisinoperationwillminimizecondensedmoisture
oncold surfaces.
GENERAL INFORMATION
630025.331 Installation Instructions

3
Model Nominal Electrical Compressor Compressor FanMotor FanMotor SCFM-High Total Refrigerant Minimum AC Circuit Installed Minimum No. Capacity Rating RatedLoad Locked RatedLoad Locked Speed Static R-22 (Oz.) WireSize* Protection Weight Generator
(BTU/HR) Amps Rotor Amps Rotor Max/Min Max/Min ***User (Pounds) Size**
Cooling Amps Amps W.C. Supplied 1Unit/2Units
120VAC, 12AWG
60Hz., 1PH Copper
UpTo24'
SPECIFICATIONS
* For wire length over 24 ft., consult the National Electric Code for proper sizing. ** DometicCorporationgivesGENERALguidelinesforgenerator requirements.Theseguidelinescomefromexperiencespeoplehavehadinactualapplications.
When sizing the generator, the total power usage of your recreational vehicle must be considered. Keep in mind generators lose power at high altitudes and from lackofmaintenance.
*** CIRCUITPROTECTION:TimeDelayFuseorHACRCircuitBreakersRequired.
630025.331 13,500 12.4 60.0 3.5 10.0 335/250 .012/0.65 23.5 20Amp 99 3.5KW/5.0KW
630025.331 Installation Instructions

4
b. Fortwounitinstallations:InstalloneAirCondi-
tioner 1/3 and one Air Conditioner 2/3’s from
front of RV and centered from side to side.
It is preferred that the air conditioner be installed on a
relativelyflat and level roof section measuredwiththe RV
parkedonalevelsurface.
Note:A8°slanttoeitherside,orfronttoback,isacceptable
for all units.
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 in-
tegrity 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 prod-
uct and the RV.
c. Check inside the RV for return air kit obstruc-
tions (i.e. door openings, room dividers, cur-
tains, ceiling fixtures, etc.) See FIG. 3 & 4.
CAUTION
CAUTION
A. Precautions
Improperinstallationmaydamage equipment,
could endanger life, cause serious injury and/
or property damage.
1. ReadInstallationandOperatingInstructionscare-
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
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.
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
1/2L LL
1/3L
2/3L
FIG. 2
9-1/2"
39"
28-3/4"
20"
2-1/2"
22"
FIG. 3
9-1/2"
39"
28-3/4"
630025.331 Installation Instructions

5
C. Roof Preparation
1. OpeningRequirements-Beforepreparingtheceil-
ing opening, read all of the 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 120 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.
FIG. 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
The14-1/4"x 14-1/4" (±1/8")openingis part of the
return air system of the Air Conditioner and must
befinishedinaccordancewithNFPAStandard501C
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. See FIG.5.
FIG. 5
d. Iftheopening exceeds14-3/8"x14-3/8",itwill
benecessarytore-sizetheopeningto14-1/4"
x14-1/4" (±1/8").
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 on the
roofandcarefullycuttheopening.
b. Using the roof opening as a guide, cut the
matching hole in the ceiling.
c. Theopeningcreatedmustbeframedtoprovide
adequate support and prevent air from being
drawnfromtheroofcavity.Lumber3/4"ormore
in thickness must be used. Remember to pro-
videanentranceholeforpowersupply.
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.
CAUTION
2 7/8
2 7/8
+
-
1/8
4
4
630025.331 Installation Instructions
FIG. 6
DoNot Cut
RoofStructure
OrRafters
Good-Rafters
SupportedBy
CrossBeams
GoodLocation-
Between Roof
Rafters
Frame Opening So It
Won't Collapse When
Bolting Down Unit
Leave Access For Power
Supply Wiring
15" Min. At
FrontOf
Opening
3/4" Min.

6
D. Wiring Requirements
1. 120 VAC Supply Line
Route a copper 12 AWG, with ground, 120 VAC
supplylinefromthetimedelayfuseorcircuitbreaker
boxtothe roof opening.
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
extendsintotheroofopening.Thisensuresand
easy connection at the junction box.
d. WiringmustcomplywithallNational,Stateand
LocalWiringCodes.
e. Useasteelsleeveandagrommetorequivalent
methodstoprotectthewirewhereitpassesinto
theopening.
E. Placing Air Conditioner On The Roof
This unit weighs approximately 100 pounds.
Topreventbackinjury,useamechanicalhoist
to place Air Conditioner on roof.
FIG. 7
Do not slide the unit. This may damage the
roof gasket attached to the bottom and may
create a leaky installation.
CAUTION
1. Removethe air conditioner fromthecarton and dis-
card carton. See FIG. 7.
2. Place the air conditioner on the roof.
3. Liftandplacetheunitoverthepreparedopeningusing
the gasket on the unit as a guide. See FIG. 8.
4. Placethe 3106152.006 Mechanical Air Distribution
BoxKit.Thisboxcontainsmountinghardwareforthe
air conditioner and will be used inside the RV.
Thiscompletestheoutsidework.Minoradjustmentscan
bedone from theinside of theRV if required.
F. Installing The Air Conditioner
1. Removeairboxandmountinghardwarefromcarton.
The upper duct is shipped inside the lower duct
which is part of the ceiling template.
2. Check for correct alignment and adjust the unit as
necessary(RoofGasketcentersover14-1/4"±1/8"
opening).
3. Removeupperductfromceilingtemplateandlocate
itoverblowerdischarge.SeeFIG.9.
Note:EdgewithoutflangeinstallstowardREARofopening.
FIG. 8
FRONT
FIG. 10
Step a
Remove At
Perforation Step b
Remove At
Perforation
Step c
UseAs
Packaged
UpperDischarge
AirDuct
Lower Discharge
AirDuct
Rear Of Air
Conditioner
UpperDischarge
AirDuct Edge Without
Flange To
Rear Of Unit
FIG. 9
4. Usetwo(2) sharp pointed#10sheetmetalscrews
toholdducttobasepan. Screwholesareprovided
in bottom of base pan for these screws.
5. Reachupintoreturnairopeningoftheairconditioner
and pull the unit electrical cord down for later
connection.
6. Measure the ceiling to roof thickness:
a. Ifdistanceis1"-2",removeperforatedtabsfrom
both upper and lower ducts. See FIG. 10.
b. Ifdistanceis2"-3",removeperforatedtabsfrom
bottom duct only. See FIG. 10.
c. If distance is 3"-4", install ducts as received.
See FIG. 10.
d. If distance is 4"-6", use optional 318556.000
Duct Adaptor and 3100895.006 Bolt Kit. See
FIG.10.
630025.331 Installation Instructions

7
7. Install ceiling template by sliding lower duct over
upper duct. See FIG. 11.
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. 11 Slide Lower Air
DischargeDuct
Over Upper Duct
Roof
Hold Ceiling Template With
One Hand And Install 3
Mounting Bolts Finger Tight
AirConditioner
ReturnAir
Opening
8. Holdtheceilingtemplatewithonehandandwiththe
other,install the three1/4" mounting boltsthrough
the template and into the base pan.
a. Finger-tighten the bolts and check alignment.
Thereshouldbeanequalopeningoneachside
andtherearflangemustbetightagainsttheroof
opening.
b. EVENLY tighten the three bolts to a torque
of40to50inchpounds.Thiswillcompress
the roof gasket to approximately 1/2". The
bolts are self locking so over tightening is
notnecessary.
G. Wiring The System
Disconnect 120 voltAC. Failure to follow these
instructionscouldcreateashock hazard caus-
ing death or severe personal injury.
WARNING
!
Reach up into the return air opening and pull the re-
mainingwiresdown.
1. Connectionof120VAC(refertoFIG.12)
a. Route power supply line through Romex con-
nector into junction box. Tighten connector,
being careful not to pinch or short wires.
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.
f. Plug the electrical conduit from the upper unit
intothematingswitchboxconnector.SeeFIG.
12.
FIG. 12
Route Power Supply
ThroughRomexCon-
nector
Plug Conduit
Into Switch
Box
Install
Cover
630025.331 Installation Instructions

8
H. AirDistributionBoxInstallation
1. Removethe two returnairgrills and filters.
2. Slide the front end of the air box over the shafts of
the thermostat and selector switch. See FIG.13.
FIG. 13
Slide Air Box over Controls
3. Install four screws through legs in air box into the
pre-punchedholes in theceilingtemplate.
4. Installthereturnairgrillsand filters by simply push-
ing them into place.
5. Install the two knobs provided on the ends of the
thermostat and selector switch shafts.
6. Thepowersupplytotheairconditionermaynowbe
turned“ON”.
7. Your air conditioner is now installed and ready for
operation.Pleasereadthefollowinginstructionsbe-
fore attempting to run the unit.
OPERATING INSTRUCTIONS
A. Controls
1. The Selector Switch has ten positions including
"OFF".Thiscontrolsfanspeed,heatingmode,and
cooling modes. See FIG. 14.
B. Cooling Operation
1. Setthethermostatatthedesiredtemperaturelevel.
2. Selectthefanspeedthatbestsatisfiesyourneeds:
a. HIGH COOL: Selected when maximum cool-
inganddehumidificationrequired.
b. MEDCOOL:Selectedwhennormaloraverage
coolingrequired.
c. LOW COOL: Selected when room at desired
comfort level and needs to be maintained.
Normallythisspeedusedfornighttimeopera-
tion.
Note: The blower runs continuously to circulate air and
maintainaneventemperature. Thecompressorwillcomeon
ascoolingisrequiredtomaintaintheselectedtemperature
level.
C. Fan Operation:
1. ThiswillcirculatetheairinyourRVwithoutcooling
or heating. There are three positions: HIGH FAN,
MEDFANorLOWFANto selectfrom,depending
uponpersonalchoice.SeeFIG.14.
D. Heating Operation
NOTE:Theheatpumpwillnotreplaceafurnaceforheating
your RV in cold weather. The intent is to warm the coach
duringmildwinterweather.
1. Turn the selector switch to:
a. Highheat
b. Medheat
c. Lowheat
2. Set the thermostat to your comfort level.
3. The fan and compressor will come on and begin
heating.
4. Whenthedesiredtemperaturelevelisreached,the
compressor will cycle as required to maintain se-
lectedtemperature.Theblowerwillruncontinuously
tocirculateairandmaintainaneventemperature.
E. "OFF" Position
1. This is to turn Unit off.
G. Customer Maintenance
1. Periodicallyremovethereturnairfilterlocatedabove
the removable panel in the air box. Wash the filter
withsoapandwarmwater,letdryandthereinstall.
Note:Neverruntheairconditionerwithoutreturnairfilterin
place.Thismayplugtheunitevaporatorcoilwithdirtandmay
substantiallyaffecttheperformanceoftheunit.
2. Cleanairboxhousingandcontrolpanelwithasoft
cloth dampened with a mild detergent. Never use
furniturepolishorscouringpowders.
3. TheblowermotorisFactorylubricatedandrequires
noserviceundernormaluse.
FAN
LO
LO
HEAT
COOL
OFF
LO
MED MED
MED
HI
HI
HI
FIG. 14
Selector Switch
2. The thermostat controls the compressor ON/OFF
operation in cooling temperature range of 65° to
90°F. See FIG. 15.
FIG. 15
COOL
WARM
2
345
6
HEAT PUMP
By DOMETIC
Thermostat
630025.331 Installation Instructions

9
630025.331 Installation Instructions
4. Under certain conditions, frost may form on the
evaporatorcoil. Ifthisshouldoccur,inspectthefilter
and clean if dirty. Make sure air louvers are not
obstructed. Air conditioners have a greater ten-
dency to frost when the outside temperature is
relatively low. This may be prevented by adjusting
the thermostat control knob to a warmer setting
(counterclockwise).Shouldfrostingcontinue,oper-
ate on MED, or HIGH FAN only setting until the
cooling coil is free of frost.
5. Ifyourunit fails tooperateoroperated improperly,
checkthefollowingbeforecallingyourservicecen-
ter.
a. IfRVconnectedtomotorgenerator,checktobe
suremotorgeneratorisrunningandproducing
power.
b. IfRVconnectedtopowersupplybyalandline,
checktobesurelineissizedproperlytorunair
conditioner load and it is plugged into power
supply.
c. Check your fuseorcircuitbreakertosee if it is
open.
d. If the outside temperature is below 40° F the
Ambient Thermostat will prevent operation of
thecompressoruntilthetemperatureisabove
45° F.
e. Afterthe above checks,call your localservice
centerforfurtherhelp.Thisunit must serviced
byqualifiedservicepersonnelonly.
6. Whencallingforservice,alwaysgivethefollowing:
a. AirConditionerModelandSerialNumberfound
on rating plate located on base pan of air
conditionerbottom.
b. AirDistributionBoxKitPartandSerialNumber
found on rating plate located on ceiling tem-
plate.Observe this ratingplate through theair
boxfiltergrillopening.
RoofMountAssembly
Rear
AirConditioner
Upper
Discharge
Duct
Ceiling
Template
Mounting
Bolts
Air Box
RoofOpening
FIG. 16

10
UNIT WIRING DIAGRAM
AIR BOX WIRING DIAGRAM
3106220.001
ONLY
CONDUCTORS
USE COPPER
USE COPPER
60 HZ 1 PH
60 HZ 1 PH
115 VAC
115 VAC
FIELD WIRING
FIELD WIRING
FACTORY WIRING
FACTORY WIRING
LINE SPLICE
LINE SPLICE
ELEC CONN
ELEC CONN
FROM A/C
FROM A/C
GRN/YEL
1
2
4
L1
C
H
6
5
4
3
2
1
BLK
YEL
RED
7
8
9
GRY
WHT
SWITCH
ROTARY
2
1
3
GRN/YEL
THERMOSTAT
BLU
BLU
WHT
BLU
BLK
GRY
BLK
WHT
GRY
BLU
BLU
BLK
WHT
630025.331 Installation Instructions
9 PIN CONN
9PIN CONN
6
5
4
3
2
1
START CAP
RUN CAP
RUN CAP
HERM
C
FAN
MOTOR
COMPRESSOR
O.L.
RS
C
RED
WHT
WHT
WHT
WHT
BRN
GRN/YEL
GRN/YEL
BLK
RED
3308032.032
BLU
RED
REVERSING VALVE
REVERSING VALVE
YEL
BLK
BLK
BLK
BLU
RED
1
3
2
WHT
AMBIENT
SWITCH
WHT
8
7
9
YEL
YEL
RED
IN-LINE
CONNECTOR
BLK
DIELECTRIC
DIELECTRIC
PASSED
MOTOR
STARTER