Dometic Duo-Therm 59116.502 Manual

1
USA
SERVICEOFFICE
TheDometicCorp.
509So.Poplar St.
LaGrange,IN46761
CANADA
DometicDist.
866LangsDr.
Cambridge,Ontario
CANADAN3H2N7
FormNo.3106343.001 1/95
©1995TheDometicCorp.
LaGrange, IN 46761
RECORD THIS INFORMATION FOR FUTURE REFERENCE
BEFORE INSTALLING THE UNIT:
ModelNumber
SerialNumber
DatePurchased
PlaceofPurchase
INSTALLATION & OPERATING
INSTRUCTIONS
WARNING
This unit must be serviced by an
authorized serviceman. Modifica-
tion of the appliance can be
extremely hazardous and could
lead to serious injury or death.
Cet appareil doit être réparé seule-
ment par un réparateur autorisé.
Modification de l'appareil pourrait
être extrèmement dangereuse, et
pourrait causer mal ou mort.
AVIS
THIS UNIT IS DESIGNED FOR OEM INSTALLATION
ALL INITIAL INSTALLATIONS MUST BE APPROVED BY THE SALES DEPT.
R
MODEL 59116.502 & 59116.602
Roof-Top Heat Pump
637G
CERTIFIED
LR 23565
®
®
MODEL
59116.502
59116.602

2
MODEL NO. 59116.502 59116.602
NominalCapacity(BTU/HR) Cooling =15,000/Heating = 14,000
ElectricalRating 115 VAC, 60 Hz., 1 PH.
CompressorRatedLoadAmps 12.9 12.1
FanMotorRated Load Amps 4.0 4.0
CompressorLockedRotorAmps 71.0 71.0
FanMotor Locked Rotor Amps 12.8 12.8
Power,Cooling(KW) 1.8 1.8
SCFM-HighSpeedMax./Min. 450/300
TotalStatic – Min./Max. . 40/1.10" W.C.
Refrigerant(R22)oz. 34.5
Minimum Wire Size *12 AWG Copper Up to 24 ft.
CircuitProtection 20 Amp Time Delay Fuse or
HACR Circuit Breaker
InstalledWeight(Pounds) 100
MinimumGenerator 1 Unit 3.5 KW
Size ** 2 Units 5.0 KW
1. GENERAL INFORMATION
A. Therooftopheatpumpwasdesignedtooperatein
aMILDGEOGRAPHICALAREAforheatingwhere
the heat loss is minimum. The 59116 will operate
down to an outside ambient temperature of 40
degrees. At 40 degrees, the outdoor thermostat
will turn off the heat pump circuit and start up the
coach's main furnace. As long as the temperature
remains below 40 degrees, the main furnace will
heat your home. As the outside temperature in-
creases to 45 degrees, the outdoor thermostat
switches back to the heat pump circuit.
The advantages of the 59116 Heat Pump Central Air
Conditioner are:
1) Userfriendly-onlyoneunitforbothheatingand
cooling.
2) When used in mild climates where the outdoor
temperature range is 40 degrees or higher, an
L.P. furnace is not needed.
3) Heat pump heating uses the campsite electri-
calhookup; therefore, yousave on trips torefill
L.P. tanks.
NOTE:Geographical locationusage shouldbe deter-
mined before omitting a central furnace.
B. This air conditioner is designed for:
1) Installation onarecreational vehicle at thetime the
vehicle is manufactured.
2) Mounting on the roof of a recreational vehicle.
3) Connection to an air distribution system located in
the ceiling/roof cavity of the recreational vehicle.
4) Roof construction with rafters/joists onminimumof
16 inch centers.
5) Minimum of 1.75 inches and maximum of 4.50
inches distance between roof to ceiling of recre-
ational vehicle. Alternate installation methods will
allow for roofs more than 4.50 inches thick.
2. PRECAUTIONS
WARNING
IMPROPER INSTALLATION MAY DAMAGE EQUIP-
MENT, COULD ENDANGER LIFE, CAUSE SERIOUS
INJURY AND/OR PROPERTY DAMAGE.
12.7"
29.5"
34.4"
SPECIFICATIONS
*
** Fordistances over 24 ft. consult the National Electrical Code.
The Dometic Corporation gives GENERAL guidelines for generator requirements.
These guidelines come from experiences people have had in actual applications.
Whensizingthegenerator,thetotalpowerusagemustbeconsidered.Alsokeepin
mindgenerators lose power at highaltitudes and from lack of maintenance.
A. Read installation and operating instructions carefully
before starting your air conditioner installation.
B. The Dometic Corporation will not be liable for any
damages or injury incurred due to failure in following
these instructions.
C. Installation must comply with the National Electrical
Code and any State or Local Codes or regulations.
D. DO NOT add any devices or accessories to this air
conditioner except those specifically authorized by
Dometic.
E. This equipment must be serviced by qualified person-
nel and some states require these people to be
licensed.
3. CHOOSING PROPER LOCATION
FOR THE AIR CONDITIONER
Thisair conditioner is specifically designed forinstallation
ontheroofofarecreationalvehicle (RV).Whendetermin-
ing your cooling requirements, the following should be
considered:
1. Size of RV;
2. Window area (increases heat gain);
3. Amount of insulation in walls and roof ofRV;
4. GeographicallocationwhereRVwillbeused;
5. Personal comfort level required.

3
From this information the size of air conditioner(s) and the
number of air conditioners needed can be determined.
A. NORMAL LOCATION
The air conditioner is designed to fit over a roof opening
14" x 14".
B. OTHER LOCATIONS
When no roof vent is available or another location is
desired, the following is recommended:
For one unit installations: The air conditioner
should be mounted slightly forward of center (front-
to-back) and centered from side-to-side.
For two unit installations: Install one air condi-
tioner 1/3 and one air conditioner 2/3's from the front
of RV and centered from side-to-side.
ROOFVENT
OPENING
L = LENGTH
L/2 L
L
1/3L
2/3L
2. The roofmustbe designedtosupport130lbs.when
the RV is in motion. Normally 200 lb. static load
design will meet this requirement.
4. AIR DISTRIBUTION SYSTEM
SIZING AND DESIGN
The Installer of this air conditioner system must design the
air distribution system for his particular application. Sev-
eral requirements for this system MUST be met for the air
conditioner to operate properly. These requirements are
as follows:
A. Roof cavity thickness must be between 1.75" to 4.50".
This distance is measured between roof and ceiling
surface.
B. The total Cross-Sectional Discharge Area of outlet
ducts from the plenum area under the air conditioner
must be a minimum of 21.0 sq. inches.
C. Duct sizing requirements are as follows:
Min. Max.
1. DuctDepth 1.50" 2.50"
2. DuctWidth 7.00" 10.00"
3. TotalDuctLength 12 ' 36'
4. DuctLength(shortrun) 1/3TotalLength
D. Register requirements as follows:
Min. Max.
1. Distancefromductend 5" 8"
2. Distancefromendof elbow 15" —
3. Distancebetweenregisters 24" —
4. Totalnumberrequired 4 8
5. Numberrequiredperrun 2 —
6. Free area per register 14 sq.in. —
E. The duct material must meet or exceed any agency or
RVIA Standard that may be in existence at the time the
RV is produced.
NOTE: IT IS THE RESPONSIBILITY OF THE
INSTALLER OF THIS SYSTEM TO INSURE THE
DUCTWORK WILL NOT COLLAPSE OR BEND
DURING OR AFTER THE INSTALLATION.
F. All discharge air ducts must be properly insulated to
preventcondensation fromforming ontheir surfacesor
adjacent surfaces during operation of the air condi-
tioner. This insulation must be R-7 minimum.
G. Ducts and their joints must be sealed to prevent con-
densation from forming on adjacent surfaces during
operation of the air conditioner.
NOTE: THE DOMETIC CORPORATION WILL NOT BE
HELD LIABLE FOR ROOF STRUCTURAL OR CEIL-
ING DAMAGE DUE TO IMPROPERLY INSULATED
OR SEALED DUCTWORK.
It is preferred that this air conditioner be installed in a
relativelyflat and level roof section measured withthe RV
parked on a level surface; however, up to 15 degree slant
to either side, or front-to-back, is acceptable.
C. After the location has been selected:
1. Check for obstructions in the area where the air
conditioner will be installed.
7-3/4"
5-3/8 15"
14" x 14"
OPENING
7-3/4"
REAR
OF
UNIT
18"
KEEP THIS AREA
FREEOFOBSTRUCTIONS
AIR CONDITIONER DIMENSIONS
(On top of vehicle)

4
H. Return air opening must have 40 sq. in. minimum free
area including the filter.
I. Return air to the air conditioner must be filtered to
preventdirtaccumulation on the air conditioner cooling
surface.
J. Totalsystempressuremustbebetween0.40to1.10in.
W.C. This is to be determined with the air conditioner
blower operating on high speed and return air filter and
grill in place.
NOTE: IT IS THE RESPONSIBILITY OF THE
INSTALLER OF THIS AIR CONDITIONER SYS-
TEM TO INSURE THE STRUCTURAL INTEG-
RITY OF THE RV ROOF.
K. The thermostatmust be locatedon aninside wall ofthe
RV,60inchesabove thefloor.Thethermostat mustnot
be located near a heat source.
5. AIR DISTRIBUTION SYSTEM
INSTALLATION
The Dometic Corporation recommends the basic configu-
ration shown below for installing this air conditioner sys-
tem. 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:
A. Duct size;
B. Duct layout;
C. Register size;
D. Register locations;
E. Thermostat location.
Theseitemsmustbedeterminedinconjunctionwiththeair
distribution system sizing and design requirements listed
in Section 4 of this Manual.
ALTERNATE CONFIGURATIONS AND METHODS
MAY BE USED WHICH STILL ALLOW THE AIR
CONDITIONER TO OPERATE PROPERLY. HOW-
EVER, THESE ALTERNATE CONFIGURATIONS
AND METHODS MUST BE APPROVED BY THE
DOMETIC CORPORATION IN WRITING.
A. ROOF AND CEILING OPENING PREPARATION
1. A 14" x 14" opening mustbe cut through the roof
and ceiling of the RV. This opening must be
located between the roof reinforcing members.
WARNING
THERE MAY BE ELECTRICAL WIRING BETWEEN
THE ROOF AND THE CEILING. DISCONNECT ALL
POWER SUPPLIES AND THE POSITIVE (+) TERMI-
NAL FROM THE SUPPLY BATTERY. FAILURE TO
FOLLOW THIS INSTRUCTION MAY CREATE A
SHOCK HAZARD.
2. Mark a14" x14" squareon theroofand carefully
cut the opening.
3. Using the roof opening as a guide, cut the
matching hole in the ceiling.
4. 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 pro-
vide an entrance hole for power supply wiring
and thermostat cable.
DUCTS MIN. MAX.
DEPTH 1.50" 2.50"
WIDTH 7" 10.00"
TOTALLENGTH 12' 36'
TOTAL OUTLET
AIR AREA 21.0
SQ. IN. MINIMUM
AIR CONDITIONER
REGISTERS
4 MIN. — 8 MAX.
14 SQ. IN. FREE AREA
PER REGISTER
ROOF RAFTERS
14 INCH ROOF
OPENING VEHICLE
FRONT
SHORT RUN DUCT
1/3 TOTAL DUCT LENGTH
(MINIMUM)

5
5. The 14" opening is part of the return air system
of the air conditioner and must be finished in
accordance with NFPA Standard 502C Section
2.7.
6. Route a copper 12 AWG with ground supply line
from fuse or circuit breaker box to the roof
opening.
a. This supply line must be located in the front
portion of the 14" opening.
b. ThepowersupplyMUST beonaseparate20
amp time delay fuse or HACR circuit breaker.
c. Makesure atleast 15"ofsupply wireextends
intotheroofopening. Thisinsureseasyconnec-
tion at the air conditioner junction box.
d. Wiring must comply with all National, State
and Local Wiring Codes.
e. Use a steel sleeve and a grommet or equiva-
lent methods to protect the wire where it passes
into the opening.
B. AIR DISTRIBUTION DUCT INSTALLATION
Install the air distribution ducts in the RV roof cavity. The
Distribution system must meet:
1. The RV's requirements;
2. System requirements listed in Section 4 of this
Manual.
Terminate the start of the duct at the back edge of the 14"
opening previously cut.
TOPVIEW
(BACK OF R.V.)
AC POWER
SUPPLY WIRE
14" OPENING
DUCT
FRAME
DUCT
THERMOSTAT CABLE
FRAME
SIDE VIEW
(TOWARD BACK OF R.V.)
INSULATION
CEILING
DUCT TO REAR
DUCT TO FRONT
INSULATION
ROOF
6. THERMOSTAT AND CABLE
INSTALLATION
A. LOCATION
The proper location of the thermostat is very impor-
tant to insure that it will provide a comfortable RV
temperature. Observe the following general rules
when selecting a location.
1. Locate the thermostat about 5 feet above the
floor.
2. Install thermostat on a partition, not on an out-
side wall;
3. NEVER expose it to direct heat from lamps, sun
or other heat producing items;
4. Avoid locations close to doors that lead outside,
windows or adjoining outside walls;
5. Avoid locations close to supply registers and the
air from them;
6. Neverlocatethermostatinaroomthatiswarmer
orcoolerthantherestofthecoach—suchasthe
kitchen;
7. Themajorlivingareaisnormallyagoodlocation.
B. CABLE INSTALLATION
The cable must be routed from the roof opening to the
Thermostat.
1. Choose the shortest, most direct route from the
14" opening to the Thermostat location selected.
2. Three standard cable lengths are available:
a. 15 feet Part No. 3101632.010
b. 25 feet Part No. 3101632.028
c. 30 feet Part No. 3101632.036
3. The Thermostat end of the cable is covered with
heatshrinktubing.Thisallowscableroutingthrough
a 7/8" diameter hole without damage to the plug.
NOTE: The tubing must be carefully removed
before connection to the Thermostat.
4. Consider where screws, nails or staples might
contact the cable.
5. Leave 6" of cable extending through the wall for
connection to the Thermostat.
6. Enough cable must extend into the 14" opening to
allow connection to the low voltage cable from the
upper unit.
7/8"
SHRINK W RAP

6
C. THERMOSTAT WIRING
Thermostat wiring for Dometic Bimetal thermostat:
Route the (10) conductor cable from the 14"x14" opening
to the thermostat location. Leave enough cable within the
14"x14"openingtoconnectto thelowvoltagecable. Atthe
thermostat location, leave about six (6") inches of cable
extending through the wall. Plug the thermostat cable into
the thermostat connector cable.
When an auxiliary furnace is used with the heat pump,
a two conductor cable must be routed from the furnace to
the thermostat location. Connect one wire from the fur-
nace to the violet wires with a wire nut. Connect the other
wire from the furnace to the green wire in the thermostat
cable and secure with a wire nut. Tuck the excess wire
backinto the walland fillopeningwith insulationto prevent
drafts that could affect the thermostat operation. Secure
the thermostat to the wall using the two screws.
D. THERMOSTAT OPERATION
Cooling:
1) Set the SYSTEM SWITCH to COOL.
2) Set the temperature LEVER to your comfort level.
3. Set the FAN switch to:
a) AUTO: The fan cycles off and on with the
compressor.
b) ON: The fan will run continuously. The com-
pressor will turn off when the room temperature is
cool enough to satisfy the thermostat setting.
Heating:
1) Set the system switch to HEAT:
2) Set the temperature LEVER to your comfort level.
3) Set the FAN switch to:
a) AUTO: The fan will cycle off and on with the
compressor.
b) ON: The fan will run continuously. The com-
pressor will cycle off and on with thermostat
demand.
Auxiliary Heat:
1) Set the system switch to AUX.HEAT.
2) Set the fan switch to AUTO.
NOTE: The auxiliary heat position is only used if:
1) You have a factory installed furnace operating
from the heat pump system thermostat.
2) The outsidetemperature is above40 degrees and
you wish to operate your furnace.
3. For quick interior warm up.
4. Thereisno115voltACpoweravailabletooperate
yourheat pump andyou must operatethe furnace
for your comfort.
Fan:
To circulate air without heating or cooling:
1) Set the SYSTEM SWITCH to OFF.
2) Set the FAN SWITCH to ON.
Hi/Low:
HIGH: Fan speed position
LOW: Fan speed position
E. THERMOSTAT WIRING
Thermostat wiring for DIGITAL thermostat: Route the
(10) conductor cable from the 14"x14" opening to the
thermostat location. Route a two conductor cable from the
coach's 12 volt DC power source to the thermostat loca-
tion.Connect12volt positive leadto thegreenwire onthe
thermostat cable.
Connect the 12 DC volt negative lead to the brown lead.
Secure both connections using wire nuts.
At the thermostat location, leave about six (6") inches of
cable extending through the wall. Plug the thermostat
cable into the thermostat connector cable.
When an auxiliary furnace is used with the heat pump, a
single wire conductor must be routed from the furnace to
thethermostatlocation.Connectthiswirefromthefurnace
to the violet pigtail at the thermostat and secure with wire
nut.Tucktheexcesswirebackintothewallandfillopening
with insulation to prevent drafts that could affect the
thermostat operation. Using the two screws provided,
secure the thermostat to the wall
NOTE: The furnace has two wires for thermostat connec-
tions. One wire should be marked 12V DC or (+) and the
other wire may be unmarked, or labeled "thermostat". The
wiremarked12VDCor (+)shouldbecapped andnotused
with the heat pump setup. The wire marked "thermostat"
or the unmarked wire is the wire to connect to the violet
thermostat pigtail. See Wiring Diagram on Page 13.
F. DIGITAL THERMOSTAT OPERATION
Your air conditioner is operated from the control panel of
the electronic wall thermostat. When the furnace is con-
nected to this thermostat, it will operate from the same
control panel.
Identification and operational descriptions for all control
panel switches and display are listed below:
1) LiquidCrystal Display:Thisdisplaywillbeillumi-
nated any time the system is in operation.
The display shows the operator both the mode of the
display (indicated by the arrow at the left side of the
display), and the temperature for that mode.
There are three display modes: ACTUAL, COOL and
HEAT.
BIMETAL DIGITAL

7
Theoperatormay choosethe modehe desirestoview
by depressing the "MODE" switch. Each time the
MODE switch is depressed, the display advances to
the next mode. If the display is left in either COOL or
HEAT, the thermostat will automatically return the
display to ACTUAL in approximately three minutes.
A description of the three modes is:
ACTUAL: When in actual mode, the display is indicat-
ing current room temperature.
COOL SET: When in COOL mode, the display is
indicating the current cooling set-point temperature.
At this time the cooling system set-point temperature
may be adjusted up or down to meet the individual's
comfort level. See "Adjusting Set-point" for further
instructions.
HEAT SET: When in the HEAT mode, the display is
indicating the current heating system set-point tem-
perature. At this time, the heating system set-point
temperature may be adjusted up or down to meet the
operator's comfort level. See "Adjusting Set-Point" for
further instructions.
All three display modes can be accessed without
affecting the operation of the system. The system
operation will remain normal unless a change is made
to the set-point to force a change in the system
operation.
2) System Switch: The system switch has four
positions to control the operation of the heating and
cooling systems. They are as follows:
COOL: When in the COOL position, the compressor
will cycle from the cooling system set-point. Blower
operation will be controlled by the position of the
Cooling Fan Switch.
HEAT: When in the heat position, the heating system
will cycle from the heating system set-point. The
heating blower will operate per the heating system
manufacturer specifications.
OFF: When in the OFF position, no thermostat or
system operation will occur. The liquid crystal will
indicate room temperature until backup power is de-
pleted (approximately 2 minutes).
AUXILIARY HEAT:
1) Set the system switch to AUX. HEAT.
2) Set the FAN switch to AUTO.
NOTE: The AUXILIARY HEAT position is only used if:
1) You have a factory installed furnace operating
from the heat pump system thermostat.
2) The outsidetemperature is above40 degrees and
you wish to operate your furnace.
3) For quick interior warm-ups.
4) Thereisno115voltACpoweravailabletooperate
your heat pump and you must operate the furnace for
your comfort.
FANSWITCH:TheFanSwitchhasfourpositionsfrom
whichtocontroltheoperationoftheheatpumpblower.
The fan switch controls operation of the blower only
after the system switch is placed into the COOL or
HEAT PUMP position.
HIGH AUTO: When in the high auto position, the heat
pump blower operates at high speed and cycles off
and on with the compressor.
LOWAUTO:Wheninlowautoposition,theheatpump
blower operates at low speed and cycles off and on
with the compressor.
HIGH and LOW ON: When in the high or low position,
the heat pump blower operates continuously. The
compressor cycles off and on as needed.
MOMENTARY SWITCHES: There are three momen-
tary switches. Momentary switches are activated by
depressing the center of the switch. A description of
these three switches follows:
MODE: Depressing this switch advances the display
mode from ACTUAL to COOL, HEAT and back to
ACTUAL. When using this switch, you are indicating
your desire to check or adjust the set-point tempera-
tures for cooling or heating. The cool setting deter-
mines the temperature at which the air conditioner will
start to operate. The heat setting determines the
temperature at which the heating system will start to
operate.
UP: Depressing this switch increases the temperature
set-point.
DOWN: Depressing this switch decreases the tem-
perature set-point.
Toadjusttheset-pointforheatingorcooling,pressthe
MODE button until the arrow on the display indicates
the desired set-point you wish to change: COOL or
HEAT.The displaywill indicate thecurrent set-pointof
thethermostat. PressUP orDOWN to changethe set-
point. Once the new desired set-point is displayed,
press the MODE button until the arrow is pointing to
ACTUAL. If the thermostat is left in the COOL or the
HEATmodethedisplaywillreturntoACTUALinabout
three minutes. After the display returns to ACTUAL, it
takes 15 to 30 seconds for the thermostat to recog-
nized the changes made to the set-point.
7. PLACING AIR CONDITIONER ON
THE ROOF
A. Remove and discard the carton. The unit mounting
bolts and literature are in separate plastic bag. Be sure
to place this information in the RV.
B. Place the air conditioner on the roof.
BE KIND -BE KIND -
BE KIND -BE KIND -
BE KIND -
RECYCLEALLRECYCLEALL
RECYCLEALLRECYCLEALL
RECYCLEALL
CARDBOARDCARDBOARD
CARDBOARDCARDBOARD
CARDBOARD

8
USE CARE IN LIFTING. THIS UNIT WEIGHS AP-
PROXIMATELY ONE HUNDRED (100) POUNDS.
C. Lift and place the unit over the prepared opening using
the gasket on unit as a guide. The blunt end goes
toward the rear of the RV.
DO NOT SLIDE THE UNIT. THIS MAY DAMAGE THE
NEOPRENE GASKET ATTACHED TO THE BOTTOM
AND CREATE A LEAKY INSTALLATION.
This completes the outside work. Minor adjustments can
be done from the inside of the RV if required.
8.8.
8.8.
8. CONNECTION OF POCONNECTION OF PO
CONNECTION OF POCONNECTION OF PO
CONNECTION OF POWER SUPPLWER SUPPL
WER SUPPLWER SUPPL
WER SUPPLYY
YY
Y
A. MOUNTING AIR CONDITIONER JUNCTION BOX
1. Position the Air Conditioner junction box in a conve-
nient location in the front portion of the 14" opening.
2. With two (2) # 8 x 1/2" screws provided, secure to wall
of opening.
B. CONNECTION OF 115 VOLT POWER SUPPLY
Disconnect ALL power before
wire leads are connected.
1. Selectthebestlocationforentranceofsupplywireinto
the junction box and remove appropriate knockout
slug from box.
2. Install the strain relief connector into the junction box.
Route the power supply line through this connector.
UNPLUG A LL
POWER TO
COACH
JUNCTION
BOX
GREEN TO
GROUND
AIR CONDITIONER
ELECTRIC CONDUIT
BLACK T O
BLACK
WHITE TO
WHITE
POWER
SUPPLY
LINE
Return A ir Grille
Return A ir
Cover
Ceiling
Template
Divider
Plate
3. Connect the white to white; black to black; and green
to green or bare copper wire using the appropriate
sized twist wire connectors. Tape the twist wire con-
nectors to the supply wiring to assure they do not
vibrate off.
4. Tighten screwson strainrelief connectorbeing careful
nottopinchandcutintotheinsulationonpowersupply
leads.
5. Pushexcesswiresintojunctionboxandinstalljunction
box cover onto the junction box.
9. INSTALLATION OF AIR
CONDITIONER
A. INSTALLATION OF CEILING TEMPLATE
1) Check gasket alignment of the Air Conditioner
over roof opening and adjust if necessary. Unit
may be moved from below by slightly lifting and
sliding.
2) Remove Return Air Cover and Ceiling Template
from the return air cover kit carton.
3) Remove Parts Package and Thermostat from its
carton.
4) Locate 1/4" unit mounting bolts in the parts pack-
age.
5) Take the ceiling template and hold up to the 14"
opening.Besurethesolidendfacestherearofthe
RV.

9
Note:Note:
Note:Note:
Note: The adhesive on double sided tape isThe adhesive on double sided tape is
The adhesive on double sided tape isThe adhesive on double sided tape is
The adhesive on double sided tape is
extremely sticky. Divider Plate must be prop-extremely sticky. Divider Plate must be prop-
extremely sticky. Divider Plate must be prop-extremely sticky. Divider Plate must be prop-
extremely sticky. Divider Plate must be prop-
erly positioned before pressing in place.erly positioned before pressing in place.
erly positioned before pressing in place.erly positioned before pressing in place.
erly positioned before pressing in place.
4. Withslightpressurethenpushdividerplateagainst
exposed double sided tape on ceiling template.
5. Locate 1/8" x 7" x 18" self-adhesive insulation
supplied with the Return Air Kit.
6. Removethebackingpaperfromtheinsulationand
carefully stick onto the ceiling template divider
panel.
Note: The adhesive on insulation is extremely
sticky. Be sure part is located where desired
before pressing into place. We recommend
pulling off part of backing paper, locating part
and then remove backing paper as insulation
is pressed into place.
a. Excess width is intended to seal the divider plate
to the sides of the 14" opening, This is to prevent
cold discharge air from circulating into the Air
Conditioner return air opening.
b. If the insulation is too high, stick the excess height
ofinsulationtotheAirConditionerbasepan. Note:
Do not cover up unit rating plate.
c. Connect low voltage cable to thermostat cable.
Push Divider Plate firmly
onto Template
Low
Voltage
Cable
Thermostat
Cable
6) Start each mounting bolt through the ceiling tem-
plate and up into the unit base pan by hand.
EVENLY TIGHTEN MOUNTING BOLTS TO AEVENLY TIGHTEN MOUNTING BOLTS TO A
EVENLY TIGHTEN MOUNTING BOLTS TO AEVENLY TIGHTEN MOUNTING BOLTS TO A
EVENLY TIGHTEN MOUNTING BOLTS TO A
TORQUE OF 40 TO 50 INCH POUNDSTORQUE OF 40 TO 50 INCH POUNDS
TORQUE OF 40 TO 50 INCH POUNDSTORQUE OF 40 TO 50 INCH POUNDS
TORQUE OF 40 TO 50 INCH POUNDS
This will compress the roof gasket to approxi-
mately 1/2". The bolts are self locking so over
tightening is not necessary.
7) Installwoodscrewineachendof ceilingtemplate.
This insures a tight fit of return air cover to ceiling.
B. INSTALLATION OF DIVIDER PLATE
1. Measure the ceiling to roof thickness:
a. If distance is 2.00" - 3.75", remove perforated
tab from Divider Plate.
b. If distance is 3.75" - 5.50", remove no tabs.
2. Remove the backing paper from double sided
tape located on Ceiling Template.
3. PlaceDividerPlateuptobottomofAirConditioner
basepanfirmly.Thefoamtapeonthedividerplate
must seal to bottom of base pan.
Screws
Rubber Gasket
Finger-Tight
40-50
IN. L BS.
To Fr ont of V ehicle
Low
Voltage
Cable Thermostat
Cable
Backing P aper
2.00-3.75"
Thermosta
t
Cable
Low Voltage
Cable
Place insulation in position
(Do not Cover unit rating plate)
Thermostat
Cable
Low
Voltage
Cable

10
C. INSTALLATION OF RETURN AIR COVER
1) Remove Return Air Grille from the Return Air
Cover.
2) PlacetheReturnAirCoveruptoCeilingTemplate.
3) Install Coverto Template with#8 x 3/8"bluntpoint
phillips head screws provided (6 required).
4) Reinstall Return Air Grille into Return Air cover.
5) Install two (2) hole plugs into screw holes in back
of return air grille. Align tabs with mating notches
and snap into place.
Return
Air Cover
Hole
Plugs
Return
Air
Grille
Low
Voltage
Cable
Thermostat Cable
AIRCONDITIONING
UNIT DISCHARGE
AIROPENING
NUT
RETAINERS
MOUNTING
BOLT
UPPERDISCHARGE
AIR DUCT
POWERSUPPLY
LINE
THERMOSTAT
CABLE
FRAMING
STOCK
DISCHARGE
AIR DUCT
CEILING
TEMPLATE
AIRBOX
LOWVOLTAGE
CABLE
JUNCTION
BOX
MOUNTING
BOLT
THREADED
HOLEIN
BOTTOM
A (2) #10 x 1/2" long sharp point sheet metal screws
B (4) 1/4" – #20 x 7 bolts
C (7) #8 x 5/8" long sharp point wood screws
D (1) Romex connector
E (1) Machine screw, 3/8" long
F (2) #10 – 24 hex nuts
G Cover plate
MOUNTING PARTS AIR BOX INSTALLATION LAYOUT

11
10.10.
10.10.
10. DISCHARGE DUCT & CEILINGDISCHARGE DUCT & CEILING
DISCHARGE DUCT & CEILINGDISCHARGE DUCT & CEILING
DISCHARGE DUCT & CEILING
TEMPLATEMPLA
TEMPLATEMPLA
TEMPLATE INSTTE INST
TE INSTTE INST
TE INSTALLAALLA
ALLAALLA
ALLATIONTION
TIONTION
TION
A. Remove the airboxand mounting hardware fromtheir
carton.Theupperductisshippedinsidethelowerduct
which is part of the ceiling template. The mounting
hardware is in a plastic bag.
NOTE: RefertoSection8,Page8,forjunctionboxlocation
and power connection.
Refer to Section 9, Page 10, for low voltage cable
to thermostat cable connection.
1) Remove the upper duct from the ceiling template
and locate it over the blower discharge. NOTE:
The edges without flanges install toward the rear
and side of the opening.
2) Use the two sharp pointed #10 x 1/2" sheet metal
screws (A) to hold the duct to the base pan.
B. Check for correct alignment and adjust the unit if
necessary.
C. Measure the ceiling thickness:
1) If the distances is 1" to 2", remove the perforated
tabs from both upper and lower ducts.
2) If the distance is 2" to 3" remove the perforated
tabs from the bottom duct only.
3) If the distance is 3" to 4" install the ducts as
received.
4) If the distance is 4" to 6" (maximum thickness), an
optional duct adapter is available (Part No.
313606.000) along with Bolt Kit (Part No.
3100895.006).
D. Install the ceiling template by sliding the lower duct
(part of the ceiling template) over the upper duct. Start
each of the four mounting bolts by hand before tight-
ening any of them. The four threaded inserts in the
base pan can be seen to aid in starting the bolts.
NOTE: Bolt Kit No. 3100895.006 or threaded rod
longerthan6" must NOT beused on roofs less
than 3.5" thick.
E. Check the ceiling template alignment to the roof
opening and evenly tighten the four mounting bolts to
a torque of 40 to 50 inch pounds. This will compress
the roof gasket to 1/2". The bolts are self-locking so
overtightening is not necessary.
F. Install a wood screw (C) in each end of the ceiling
template. This assures a tight fit of the air box to
ceiling.
FRONT OF
COACH
WOOD
SCREW
(C)
WOOD
SCREW
(C)
MOUNTING BOLT (B)
CORNER NUT
RETAINER
DISCHARGE A IR
DUCT
MOUNTING
BOLT (B)
CORNER
REINFORCEMENT
(TYP.)
MOUNTING BOLT (B)
MOUNTING
BOLT (B)
UPPER
SIDE WITHOUT
TAB T O R EAR A N
D
N
D
SIDE OF A IR
CONDITIONER
A
A
LOWER
F
F
R
R
ONT OF
COA
C
OACH
THERMOSTAT CA BLE
POWER SUPPLY
LINE

12
11. INSTALL AIR BOX
Mounting requires four wood screws (C); one
machinescrew(F);andtwohexnuts(G),toinstall
the air box.
A. Remove the return air grille held by two (2)
push/pull fasteners.
B. Install air box over two weld studs on ceiling
template and secure with nuts (G).
C. Install machine screw (F) in round air box
hole.
D. Install four wood screws (C) that hold air box
tight to the ceiling.
E. Reinstallreturnairgrille,andsnapcoverplate
(H) into air box.
WOOD SCR EW (C)
MACHINE
SCREW (F )
COVER PLATE (H)
PUSH/PULL
FASTENERS
RETURN A IR GR ILLE
WOOD
SCREW (C)
NUT (G)
WOOD SCR EW (C)
CEILING TEMPLATE
WELD ST UDS
WOOD SCR EW (C)
12. MAINTENANCE
AIRFILTER:Periodicallyremovethereturnairfilter.Wash
the filter with soap and warm water; let dry and then
reinstall or replace as required.
NOTE:Never run theair conditioner without the return
airfilterinplace.Thismayplugtheunitevaporatorcoil
with dirt and may substantially affect the performance
of the unit.
FROST PREVENTION:
Air conditioners have a tendency to frost during operation
in cool temperatures with moderate humidity conditions,
particularly on low fan speed. This condition normally
existsduringtheeveningornighttimehoursofoperationof
the air conditioner. To help your air conditioner maintain
peak performance without frosting-over during this time
period,preset the thermostat to approximately75 degrees
and run fan at high speeds.
The ability of the air conditioner to maintain the desired
inside temperature depends not only on the heat gain of
thevehiclebut also some preventative measures taken by
the occupants. During extreme outdoor temperatures, the
heat gain of the vehicle may be reduced by:
Parking vehicle in a shaded area;
Using window shades (blinds and/or curtains);
Keeping windows and door shut;
Avoiding the use of heat producing appliances.
Starting the air conditioner early in the morning and giving
the system a "head start" on the expected high outdoor
ambient will greatly improve its ability to maintain the
desired indoor temperature.
CAUTION
The manufacturer of this air conditioner will not be
responsible for damage caused by condensed mois-
ture on ceilings or other surfaces. Air contains mois-
ture and this moisture tends to condense on cold
surfaces. When air enters the vehicle, condensed
moisture may appear on air registers, ceilings, win-
dows, 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.
For a more permanent solution to a high heat gain,
accessorieslikeA&Eoutdoorpatioawningswillreducethe
heat gain by removing the direct exposure to the sun, and
add a nice area to enjoy company during the cool of the
evening.
13. SERVICE – Unit Does Not Operate
If you unit fails to operate or operates improperly, check
the following before calling your service center.
A. If yourRV isconnected tomotor generator,check to be
sure motor generator is running and producing power.
B. IfRVis connectedtopowersupplybyaland line,check
to be sure line is sized properly to run air conditioner
load and it is plugged into power supply.
C. Check your fuse or circuit breaker to see if it is open.
D. Aftertheabovechecks,callyourlocalservicecenterfor
further help. This unit must be serviced by qualified
service personnel only.
When calling for service, always give the air conditioner
Model Number and Serial Number. This information can
be found on the unit rating plate located on the underside
of the air conditioner base pan.

13
WIRING DIAGRAM
+
-
POWER
SOURCE
12VDC
FURNACE
12 VDC
WIRE
NOT USED
BLU
BLU
GRN
BRN
VIO
VI
O
VI
O
GRN
FURNACE
-
+
DIGITAL THERMOSTAT BI-METAL THERMOSTAT