Dometic CARAVAN B3200 Manual

1
Type 3253.332 Installation and Operating Instructions
INSTALLATION & OPERATING
INSTRUCTIONS
Important:TheseInstructions
must stay with unit.
Owner read carefully.
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.
MODEL B3200
Roof-Top Air Conditioner
used with
Mechanical Air Distribution Box
TYPE
3253.332
Air Conditioner
REVISION:
FormNo.3310070.0104/06
(Replaces3310070.000)
©2006DometicCorporation
LaGrange,IN 46761
SERVICEOFFICE
DometicCorporation
ForInformation
Contact:
www.dometic.com
RECORD THIS UNIT INFORMATION FOR FUTURE
REFERENCE:
Model Number
SerialNumber
DatePurchased

2
Type 3253.332 Installation and Operating Instructions
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 ORCAUTION is used
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. Productfeaturesorspecificationsasdescribedorillus-
trated are subject to change without notice.
Thefollowingarethebasicrequirements:
1. Installationopening.Cut throughtheroofand ceil-
ing.
2. AdditionalWiring.
220-240 VAC, 50 Hz. 10 Amp.
3. Powerwiththeairconditioneronmustbeabove209
VAC and the frequency must be at 50 HZ. at all
times.
B. This Air Conditioner Is Designed For:
1. Installationonarecreationalvehicleduringthetime
thevehicleismanufactured.
2. Mountingontheroofofarecreationalvehicle.
3. Roofconstructionwithrafters/joistsonminimumof
40.6 cm centers.
4. Minimumof 5cmand maximumof10 cmdistance
betweenrooftoceilingofrecreationalvehicle.Alter-
nate installation methods will allow for roofs more
than 10 cm thick.
C. Theabilityoftheairconditionertomaintainthedesired
inside temperature depends on the heat gain of the
Caravan.
Somepreventativemeasurestakenbytheoccupantsof
theCaravancanreducetheheatgainandimprovethe
performance of the air conditioner. During extremely
highoutdoortemperatures,theheatgainofthevehicle
may be reduced by:
1. ParkingtheCaravaninashadedarea
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.
Fora morepermanentsolution tohighheat gain,accesso-
rieslikeDometicA&Eoutdoorpatioandwindowawningswill
reduceheatgainbyremovingthedirectsun.Theyalsoadd
aniceareatoenjoycompanyduringthecooloftheevening.
GENERAL INSTRUCTIONS

3
Type 3253.332 Installation and Operating Instructions
A. Precautions
Improper installation; may damage equip-
ment; could endanger life; cause serious in-
jury and/or property damage.
1. ReadInstallationand OperatingInstructionscare-
fully before attempting to start your air conditioner
installation.
2. DometicCorporationwillnotbeliableforanydam-
ages or injury incurred due to failure in following
these instructions.
3. Theequipmentshallbeinstalledinaccordancewith
nationwiringregulationperICE335-2-40,7.12.1.In-
stallation must comply with applicable codes or
regulations.
INSTALLATION INSTRUCTIONS
SPECIFICATIONS
TheManufacturergivesonlygeneralguidelinesforGenerator
requirements. These Generator requirements come from
experiences consumers have with our equipment in field
applications. When sizing Generators, the total electrical
powerconsumptionofthecaravanmustbeconsidered.Keep
in mind that Generators lose power because of altitude
increaseabovesealevel,highoutsidetemperaturesandlack
ofmaintenance.
Type 3253.332 Electric
Air Cond Heater
Nominal Capacity (KW) 3.2 1.6
Electrical Rating 220 - 240 VAC 50 Hz. 1Ph.
FL Amps (Comp/Motor) 5.2/1.6 6.3/1.6
LR Amps (Comp/Motor) 26/4.4 --/4.4
Power (KW) 1.3 1.9
Min. Wire Size Up to 8 meters, use 1.5mm2Copper
Circuit Protection 10 Amp Time Delay Fuse or
10 Amp Circuit Breaker
Generator Size
1 Unit 3.5 KW
2 Units 5.0 KW
5. This equipment must be serviced by qualified per-
sonnelandsomelocalitiesrequirethesepeopleto
belicensed.
B. CHOOSINGPROPERLOCATIONFORTHE
AIR CONDITIONER
Thisairconditionerisspecificallydesignedforinstalla-
tionontheroofofarecreationalvehicle(Caravan).When
determining your cooling requirements, the following
shouldbeconsidered:
•SizeofCaravan;
•Windowarea(increasesheatgain);
•Amountofinsulation inwalls androof;
•Geographical location where the Caravan will be
used;
•Personalcomfortlevelrequired.
1. NormalLocation-Theairconditionerisdesignedto
fitoveranexistingroofventopening.Whenthevent
isremoved,itnormallycreatesa35.5cmx35.5cm
opening.See FIG.1.
FIG. 1
2. Other Locations-When no roof vent is available or
anotherlocationisdesired,thefollowing isrecom-
mended:
a. For one unit installation :
Theairconditionershouldbemountedslightly
forward of the center (front to back ) and cen-
teredfromsidetosideontheCaravan.SeeFIG.
2.
1/2L LL
1/3L
2/3L
FIG. 2
L = Length
b. For two unit installations:
Installoneairconditioner1/3andtheother2/3's
backfromthefrontofthecaravanandcentered
from side to side. See FIG. 2.
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
enterstheCaravan,condensedmoisturemayappearonthe
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.
4. DONOTaddanydevicesoraccessoriestothisair
conditionerexceptthosespecificallyauthorizedby
Dometic.

4
Type 3253.332 Installation and Operating Instructions
3. Check the location acceptability before beginning
the installation.
a. Ifpossiblemounttheairconditionerinasection
oftheroofwhichisbothflatandlevelwhenthe
caravanisparkedonalevelsurface;otherwise,
asidewayspitchorforwardpitchupto8°canbe
tolerated, but a backward pitch can never be
accepted. See FIG. 3.
b. Checkontherooftoinsurenoobstructionsare
in the area where the air conditioner will be
installed. See FIG. 4 & 5.
c. Check inside the Caravan for air box obstruc-
tions (i.e. door openings, room dividers, cur-
tains, ceiling fixtures, etc.) See FIG. 6.
d. The roof must be designed to support 60 Kg.
when the Caravan is in motion. Normally a 90
Kg. static load design will meet this require-
ment. See FIG. 7.
54 cm
KEEP THESE AREAS
FREE OF OBSTRUCTIONS 30 cm
REAR
OF
UNIT
10 cm
10 cm
10.5 cm
18 cm
18 cm
Center Line
of Unit
Center Line
of Unit
10 cm 10 cm
7.5 cm
7.5 cm
51 cm
Air Box
PERIMETER
35.5 x35.5 cm
OPENING
56 cm
35.5 x35.5 cm
OPENING
FIG. 4
It is the responsibility of the installer of this
air conditioner system to ensure structural in-
tegrity of the Caravan 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 Caravan.
CAUTION
Roof /Return Air Grill - Cross
Section
Light
35.5 cm
ProhibitsInstallation
Cabinet - Prohibits Use
FIG. 6
FIG. 3 OK
Side Side
Good
8° With A/C
Facing Forward
FIG. 5
97 cm
24 cm
73 cm
51
cm
56 cm
6.4 cm

5
Type 3253.332 Installation and Operating Instructions
C. Roof Preparation
1. OpeningRequirements-Beforepreparingtheceil-
ing opening, read all of the following instructions
beforebeginningtheinstallation.
Ifaroofventopeningwillnotbeuseda35.5cmx35.5
cmopeningmustbecutthroughtheroofandceiling
oftheRV.Thisopeningmustbelocatedbetweenthe
roofreinforcingmembers.
The35.5 cmx35.5 cmopeningis partofthe return
air system of the Air Conditioner and must be fin-
ishedin accordancewith nationaland localcodes.
2. RoofVentRemoval
a. Unscrewandremovetheroofvent.
b. Remove all caulking compound around open-
ing.
c. Sealallscrewholesandseamswheretheroof
gasket is located. Use a good grade of all
weathersealant. SeeFIG. 5.
d. Iftheopeningexceeds36.5cmx36.5cm,itwill
benecessarytore-sizetheopeningto35.5cm
x 35.5 cm.
e. If the opening is less than 35.5 cm x 35.5 cm,
it must be enlarged.
3. NewOpening-(InstallationOtherThanVentOpen-
ing)
a. Marka35.5cmx35.5cmsquareontheroofand
carefullycut theopening.
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.Lumber2cmormore
in thickness must be used. Remember to pro-
videanentranceholeforpowersuppliesatthe
frontof theopening.SeeFIG.6.
It is the responsibility of the installer of this
air conditioner system to ensure structural
integrity of the Caravan roof. Never create a
low spot on the roof where water will collect.
Waterstandingaround the air conditioner may
leak into the interior causing damage to the
product and the Caravan.
CAUTION
FIG. 5
FIG. 6
DoNotCut
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
38 cm Min.
AtFront of
opening
2 cm Min.
D. Wiring Requirements
1. 220-240VACSupplyLine
Routeacopper1.5mm2,withground,220-240VAC
supplylinefromthetimedelayfuseorcircuitbreaker
boxto theroofopening.
a. This supply line must be located in the front
portion of the 35.5 cm x 35.5 cm opening.
b. ThepowerMUSTbeonaseparate10Amptime
delay fuse or 10 Amp circuit breaker.
c. Make sure that at least 38 cm of supply wire
extends into the roof opening. This ensures
easy connection at the junction box.
d. WiringmustcomplywithallNationalandLocal
WiringCodes.
e. Useasteelsleeveandagrommetorequivalent
methodstoprotectthewirewhereitpassesinto
theopening.
There may be electrical wiring between the
roof and the ceiling. Disconnect 220-240 volt
AC power cord and the positive (+) 12 volt DC
terminal at the supply battery. Failure to fol-
low this instruction may create a shock haz-
ard causing death or severe personal injury.
WARNING
!

6
Type 3253.332 Installation and Operating Instructions
This unit weighs approximately 45 Kg. To
preventbackinjury,useamechanicalhoistto
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
E. Placing Air Conditioner On The Roof
4. PlacetheMechanicalAirDistribution BoxKitinside
theCaravan.Thisboxcontainsmountinghardware
for the air conditioner and will be used inside the
Caravan.SeeFIG.7.
Thiscompletestheoutsidework.Minoradjustmentscan
bedonefromtheinsideoftheCaravanifrequired.
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(Roof Gasketcentersover35.5cm
opening).
3. Removeupperductfromceilingtemplateandlocate
itoverblowerdischarge.SeeFIG. 9.
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
Note:EdgewithoutflangeinstallstowardREARofopening.
4. Usetwo(2)sharppointed1.0cm longsheetmetal
screws to hold duct to base pan. Screw holes are
providedinbottomofbasepan forthesescrews.
5. Reachupintoreturnairopeningoftheairconditioner
and pull the unit electrical cord down for later
connection.
6. Measure the ceiling to roof thickness:
a. If distance is 5.0 cm, remove perforated tabs
frombothupperandlowerducts.SeeFIG.10.
b. Ifdistanceis5.0cm-7.5cm,removeperforated
tabs from bottom duct only. See FIG. 10.
c. If distance is 7.5 cm - 10.0 cm, install ducts as
received.SeeFIG.10.
1. Removethe airconditioner fromthe cartonanddis-
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.

7
Type 3253.332 Installation and Operating Instructions
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
8. Holdtheceilingtemplatewithonehandandwiththe
other, install the three mounting bolts through 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
of4.5to5.0NM.Thiswillcompresstheroof
gasket to approximately 13 cm. The bolts
are self locking so over tightening is not
necessary.
Disconnect 220-240 volt AC. Failure to follow
theseinstructionscouldcreatea shock hazard
causing death or severe personal injury.
WARNING
!
Shock Hazard: Do not plug the molded cord
in until you have completely installed the air
conditioner and are ready for an operational
check.
WARNING
!
FIG. 12
Route Power Supply
ThroughRomex Con-
nector
Plug Conduit
Into Switch
Box
Install
Cover
G. Wiring The System
1. You may either wire direct into the junction box for
apermanent connectionorwireamolded pluginto
the junction box for a plug in connection.
a. Ifa PermanentConnection:Routethepower
supplyline,previouslyinstalledtotheroofopen-
ing, into the junction box on the ceiling tem-
plate.Connect asdescribed below.
b. If a Plug In Connection: Usethe electricsup-
ply line, to power an electrical outlet installed,
according to applicable laws, at the end of the
roofopeningfarthermostfromthejunction box.
Note:Ifoptionalelectricheaterispartofthisinstallation,now
is the time to install it. Installation instructions are provided
with the electric heater kit.
1. Route the molded plug set from the electric outlet
intothejunctionboxinsuringnottocoilexcesswire
so it will block air flow. Connect the plug set to the
terminalblockas describedbelow.
2. Connectthepowersupplylinetotheairconditioner
at the terminal block provided in the junction box.
Connect red to red; black to black; and green to
green or bare copper wire (P, P, and , respect-
fully). See Fig. 12.
3. Tighten the strain relief onto the power supply line
to hold it firmly in place being careful not to pinch
thewires.
4. Carefullypushallexcesswirebackintothejunction
box and install cover onto the box with two blunt
pointedscrews.
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
Tighten
boltsto
compress
gasket to 13
mm

8
Type 3253.332 Installation and Operating Instructions
H. AirDistributionBoxInstallation
1. Removethe tworeturn airgrills andfilters.
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 inthe ceilingtemplate.
4. Installthe returnairgrills andfiltersby simplypush-
ing them into place.
5. Install the two knobs provided on the ends of the
thermostat and selector switch shafts.
6. Thepower supplytotheairconditionermaynowbe
turned“ON”.
7. Your air conditioner is now installed and ready for
operation.Pleasereadthe followinginstructionsbe-
fore attempting to run the unit.
OPERATING INSTRUCTIONS
A. Controls
1. The Selector Switch has eight positions including
"OFF".Thiscontrolsfanspeed,heatingmode,and
cooling modes. See FIG. 14.
B. Cooling Operation
1. Setthethermostatatthedesiredtemperaturelevel.
2. Selectthefanspeedthatbestsatisfiesyourneeds:
a. HIGH COOL (3): Selected when maximum
coolinganddehumidificationrequired.
b. MEDCOOL(2):Selectedwhennormaloraver-
agecoolingrequired.
c. LOW COOL (1): Selected when room at de-
siredcomfortlevelandneedstobemaintained.
Normallythisspeedusedfornighttimeopera-
tion.
Note: The blower runs continuously to circulate air and
maintainaneventemperature. Thecompressorwillcomeon
ascoolingisrequiredtomaintaintheselectedtemperature
level.
C. Fan Operation:
1. This will circulate the air in your Caravan without
coolingorheating.Therearethreepositions:HIGH
FAN (3), MED FAN (2) or LOW FAN (1) to select
from,dependinguponpersonalchoice.SeeFIG.14.
D. HeatingOperation:(WithOptionalHeatKit
Installed)
Note: This electric heater will not replace a furnace for
heatingyourCaravanincoldweather.Theintentistoremove
the chill on cool days or mornings.
1. Turntheselectorswitchto"OPTHEAT".SeeFIG.
14
2. TheHeater willcomeon andbeginheating. There
arethreepositions:HIGHHEAT(3),MEDHEAT(2)
or LOW HEAT (1) to select from, depending upon
personal choice. See FIG. 14.
3. When desired temperature level in Caravan is
reached,the thermostatwill cycletheelectric heat
striponandoff;thefanwillcontinuetooperateinthe
speedselected.
4. Movetheselectorswitchto"OFF" or"FAN"posi-
tion to stop operation of the electric heat strip.
Note: If the electric heat strip is not installed, the fan will
operate in the same manner as in the FAN mode.
E. "OFF" Position
1. This is to turn Unit off.
G. Customer Maintenance
1. Periodically remove the return air filters located
abovetheremovablepanelsintheairbox.Washthe
filters with soap and warm water, let dry and then
reinstall.
Note:Neverruntheairconditionerwithoutreturnairfilterin
place.Thismayplugtheunitevaporatorcoilwithdirtandmay
substantiallyaffecttheperformanceoftheunit.
2. Cleanairboxhousingandcontrolpanelwithasoft
cloth dampened with a mild detergent. Never use
furniturepolishorscouringpowders.
3. Theblowermotorisfactorylubricatedandrequires
noserviceundernormaluse.
FIG. 14
Selector Switch
2. The thermostat controls the compressor ON/OFF
operation in cooling temperature range of 18° to
35°C.See FIG.15.
3
3
22
1
1
1
2
3
FIG. 15 Thermostat
Heat Strip
Cool
Fan
Warmer Cooler
Off

9
Type 3253.332 Installation and Operating 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 LOW, MED, or HIGH FAN only setting
until the cooling coil is free of frost.
5. Ifyour unitfails tooperateoroperatedimproperly,
checkthefollowingbeforecallingyourservicecen-
ter.
a. IfCaravanconnectedtomotorgenerator,check
to be sure motor generator is running and
producingpower.
b. IfCaravanconnectedtopowersupplybyaland
line, check to be sure line is sized properly to
run air conditioner load and it is plugged into
powersupply.
c. Checkyour fuseorcircuit breakertoseeifit is
open.
d. Afterthe abovechecks, callyour localservice
centerfor furtherhelp.This unitmustserviced
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 thisrating platethrough theair
boxfiltergrillopening.
RoofMountAssembly
Rear
AirConditioner
Upper
Discharge
Duct
Ceiling
Template
Mounting
Bolts
Air Box
RoofOpening
FIG. 16

10
Type 3253.332 Installation and Operating Instructions
AIR CONDITIONER WIRING DIAGRAM
AIR BOX WIRING DIAGRAM
GRN/YEL
RUN CAP
RUN CAP
*
CAP
START PTCR
3308032.008
*SOME MODELS
SOME MODELS
NOT USED ON
NOT USED ON
COMPRESSOR
C
MOTOR
HERM
C
FAN
GRN/YEL
COMP STARTER
O.L.
R
*
S
PASSED
DIELECTRIC
4
6
5
3
2
6 PIN CONN
6 PIN CONN
1
RED
WHT
RED
YEL
BLK
WHT
RED
WHT
BRN
WHT BLU
43
2
C
ROTARY
SWITCH
H
L1
LO
MED
HI
4
2
1
MOTOR FAN
CAP
220/240 V~
220/240 V~
50Hz
HEATER
THERMOSTAT
PTCR
START
CAP
RUN CAP
RUN CAP
COMPRESSOR
RC
S
FACTORY WIRING
FIELD WIRING
FIELD WIRING
ELECTRICAL
BOX
COMP
PTCR
START CAP
FAN
CAP
CAP
RUN
RED
BLK
3106599.008
BLU
YEL
WHT
YEL
YEL R
C
S
O.L.
MOTOR BRN
BRN
YEL
BLK
RED
WHT
WHT
G-YG-Y
2
4
1
ORN
RED
YEL
ROTARY
SW
BLK
C
H
L1
BRN
WHT
1
3
GRY
GRY
BLU
3
2
4RED
T'STAT
G-Y
JUNCTION
BOX
220/240V 50 Hz 10
220/240V 50 Hz 10
USE COPPER CONDUCTORS ONLY
USE COPPER CONDUCTORS ONLY
ACTIVE(P)
ACTIVE(P)
NEUTRAL(P)
NEUTRAL(P)
EARTH( )
EARTH( )
HEAT PACKAGE
WHT
BLK
ELEMENT
LIMIT SWITCH
OFF
1
2
3
4
5
6
7
2