Dometic 641915.30X, 641916.30X, 641935.30X, 651915.30X, 651916.30X Installation Instructions Manual

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Page 1
USA
AVERTISSEMENT
SERVICE OFFICE Dometic, LLC 2320 Industrial Parkway Elkhart, IN 46516 574-294-2511
Roof Top Unit
Description Model Use With Return Air Grill
Air Conditioner 641915
Air Conditioner W/Electric Heat
Heat Pump 651915
641916
641935
651916
Model Single Zone
3105007.XXX OR
3105935.XXX
LCD Thermostat
3313192.XXX Cool/Furn
3313193.XXX Cool/Furn/HP
3313194.XXX Cool/Furn/HS
RECORD THIS UNIT INFORMATION FOR FUTURE REFERENCE: Model Number Serial Number Date Purchased
CANADA
Dometic, LLC 46 Zatonski, Unit 3 Brantford, Ontario CANADA N3T 5L8 519-720-9578
This unit is designed for OEM installation. All initial installations must be approved by Dometic, LLC
This manual must be read and understood before installation, adjustment, service, or mainte-
For Service Center Assistance Call:
800-544-4881
nance is performed. This unit must be installed by a qualied service technician. Modification of this product can be extremely hazard­ous and could result in personal injury or property damage.
INSTALLATION INSTRUCTIONS
!
Lire et comprendre ce manuel avant de procéder à l’installation, à des réglages, de l’entretien ou des réparations. L’installation de ce produit doit être effectuée par un réparateur qualié. Toute modication de ce produit peut êtr e ext rê memen t dan ge re use et entraîner des blessures ou dommages matériels.
MODELS
641915.30X
641916.30X
641935.30X
651915.30X
651916.30X
Form No. 3314202.000 5/11 (French 3314203.000) ©2011 Dometic, LLC LaGrange, IN 46761
Important: These instructions must
stay with unit. Owner read carefully.
Page 2
SAFETY INSTRUCTIONS
GENERAL INFORMATION
This manual has safety information and instruc­tions to help users eliminate or reduce the risk of accidents and injuries.
RECOGNIZE SAFETY INFORMATION
This is the safety alert symbol. It is used to alert you to personal injury hazards. Obey all safety messages that follow this symbol to avoid pos­sible injury or death.
UNDERSTAND SIGNAL WORDS
A signal word, when used with the safety alert symbol, will identify a safety hazard and its level of risk for personal injury. A signal word, without the safety alert symbol, will be used for property damage messages only.
WARNING indicates a hazard­ous situation which, if not avoided, could result in death or serious injury.
CAUTION, used with the safe­ty alert symbol, indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE is used to address practices not related to personal injury.
Read and follow all safety information and instructions to avoid personal injury.
A. Product features or specications as described or il-
lustrated are subject to change without notice.
B. This Air Conditioner/Heat Pump (hereinafter referred
to as the "unit") Is Designed For:
1. Installation on a recreational vehicle at the time the vehicle is manufactured.
2. Mounting on the roof of a recreational vehicle.
3. Roof construction with rafters/joists on minimum of 16 inch centers.
4. Minimum of 2 inches and maximum of 5-1/2 inches distance between roof to ceiling of recreational vehicle. Alternate installation methods will allow for roofs more than 5-1/2 inches thick.
C. The ability of this air conditioner to maintain the desired
inside temperature depends on the heat gain of the RV.
Some preventative measures taken by the occupants
of the RV can reduce the heat gain and improve the performance of the air conditioner. During extremely high outdoor temperatures, the heat gain of the vehicle may be reduced by:
1. Parking the RV in a shaded area
2. Using window shades (blinds and/or curtains)
3. Keeping windows and doors shut or minimizing usage
4. Avoiding the use of heat producing appliances
Operation on High Fan/Cooling mode will give optimum or maximum efciency in high humidity or high outside temperatures.
Starting the air conditioner early in the morning and giving it a "head start" on the expected high outdoor ambient will greatly improve its ability to maintain the desired indoor temperature.
For a more permanent solution to high heat gain, acces­sories like Dometic outdoor patio and window awnings will reduce heat gain by removing the direct sun. They also add a nice area to enjoy company during the cool of the evening.
D. Condensation
Note: The manufacturer of this unit will not be responsible
for damage caused by condensed moisture on ceilings or other surfaces. Air contains moisture and this moisture tends to condense on cold surfaces. When air enters the RV, condensed moisture may appear on the ceiling, win­dows, metal parts, etc. During normal operation this unit removes moisture from the air. Keeping doors and windows closed when this air conditioner is in operation will minimize condensed moisture on cold surfaces.
2
Page 3
SPECIFICATIONS
Model No. Nominal
641915.30X 13,500 12.5 61.0 3.5 10.0 17.5 20 Amp 3.5 KW / 5.0 KW
641916.30X Hi Cap 12.3 61.0 3.3 8.5 23.0 20 Amp 3.5 KW / 5.0 KW
641935.30X 13,500 12.5 61.0 3.5 10.0 17.5 20 Amp 3.5 KW / 5.0 KW
651915.30X 13,500 12.5 61.0 3.5 10.0 25.0 20 Amp 3.5 KW / 5.0 KW
651916.30X Hi Cap 12.3 61.0 3.3 8.5 24.0 20 Amp 3.5 KW / 5.0 KW
Capacity
(BTU HR)
Cooling
Electrical
Rating
120 VAC
60Hz. 1PH
Compressor
Rated Load
Amps
Compressor
Locked
Rotor Amps
Fan Motor
Rated Load
Amps
Fan Motor
Locked
Rotor Amps
Refrigerant
R-410A
(Oz.)
Minimum
Wire Size*
12 AWG
Copper
Up to 24'
AC Circuit Protection ***Installer
Supplied
Minimum
Generator
Size**
1 Unit / 2 Units
* For wire length over 24 ft., consult the National Electric Code for proper sizing. ** Dometic, LLC 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. Keep in mind generators lose power at high altitudes and from lack of maintenance.
*** CIRCUIT PROTECTION: Time Delay Fuse or Circuit Breaker Required.
3
Page 4
INSTALLATION INSTRUCTIONS
A. Precautions
FIG. 1
9-1/2"
Improper installation may damage equipment, could endanger life, cause serious injury and/ or property damage.
1. Read Installation and Operating Instructions care­fully before attempting to start this unit installation.
2. Dometic, LLC will not be liable for any damages or injury incurred due to failure in following these instructions.
3. Installation must comply with the National Electri­cal Code ANSI/NFPA-70 and CSA Standard C22.1 (latest edition) and any State or Local Codes or regulations.
4. DO NOT add any devices or accessories to this unit except those specically authorized in writing by Dometic, LLC.
5. This equipment must be serviced by qualied personnel and some states require these people to be licensed.
B. Choosing Proper Location For The Unit
This unit is specically designed for installation on the
roof of a recreational vehicle (RV). When determining your cooling requirements, the following should be considered:
Size of RV;
Window area (increases heat gain);
Amount of insulation in walls and roof;
Geographical location where the RV will be used;
Personal comfort level required.
1. For one unit installation: The unit should be mounted slightly forward of center (front to back) and cen­tered from side to side.
2. For two unit installations: Install one unit 1/3 and one unit 2/3’s from front of RV and centered from side to side.
It is preferred that the unit be installed on a relatively at and level roof section measured with the RV parked on a level surface, but up to a 8° tilt is acceptable.
3. After Location Has Been Selected:
a. Check for obstructions in the area where unit
will be installed. See FIG. 1.
40"
29"
Dimensions Are Nominal
12"
Center Line Of Unit
4"
Dimensions Are Nominal
Keep These Areas Free Of Obstructions
14-1/4" x 14-1/4" (± 1/8") Opening
Front
4"
b. The roof must be designed to support 130
pounds when the RV is in motion. Normally a 200 lb. static load design will meet this require­ment.
It is the responsibility of the installer of this system to ensure structural integrity of the RV roof. Never create a low spot on the roof where water will collect. Water standing around the unit may leak into the interior causing damage to the product and the RV.
c. Check inside the RV for return air grill ob-
structions (i.e. door openings, room dividers, curtains, ceiling xtures, etc.) See FIG. 2.
FIG. 2
Front
3/4"
Dimensions Are Nominal
17"
14-1/4" x 14-1/4"
1-1/4"
(± 1/8") Opening
17"
17"
1-1/2"
1-3/4"
1-1/2"
17"
Dimensions Are Nominal
4
Page 5
C. Roof Preparation
1. Opening Requirements - Before preparing the ceil­ing opening, the type of system options must be decided upon. Read all of the following instructions before beginning the installation.
There may be electrical wiring between the roof and the ceiling. Disconnect 120 VAC power cord and the positive (+) 12 VDC ter­minal at the supply battery. Failure to follow this instruction may create a shock hazard causing death or severe personal injury.
2. Mark a 14-1/4" x 14-1/4" (±1/8") square on the roof and carefully cut the opening. The 14-1/4" x 14-1/4" (±1/8") opening is part of the return air system of the unit and must be nished in accordance with ANSI A119.2.
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. Framing stock 3/4" or more in thickness must be used. Remember to provide an entrance hole for power supplies, 3 conductor communication cable, and furnace wiring (if ap­plicable).
FIG. 3
D. Air Distribution Duct System Sizing & De-
sign (See Chart On Page 6)
It is the responsibility of the installer to insure the duct work will not collapse or bend dur­ing and after the installation. Dometic, LLC will not be liable for roof structural or ceiling damage due to improperly insulated, sealed or collapsed duct work.
The Installer of this system must design the air distri-
bution system for their particular application. Several requirements for this system MUST be met for the unit to operate properly. These requirements are as follows:
1. The duct material must meet or exceed any agency or RVIA Standard that may be in existence at the time the RV is produced.
2. All discharge air ducts must be properly insulated to prevent condensation from forming on their surfaces or adjacent surfaces during operation of the unit. This insulation must be R-7 minimum.
FIG. 4
Frame
Duct
TOP VIEW
(BACK OF RV)
Frame
14-1/4" (±1/8")
Opening
AC Power Supply Wire
Duct
Do Not Cut Roof Structure Or Rafters
3/4" Min.
Good-Rafters Supported By Cross Beams
Frame Opening So It
Good Location­Between Roof Rafters
Won't Collapse When Bolting Down Unit
Leave Access For Power Supply Wiring
15" Min. At Front Of Opening
It is the responsibility of the installer of this system to ensure structural integrity of the RV roof. Never create a low spot on the roof where water will collect. Water standing around the unit may leak into the interior causing damage to the product and the RV.
Frame
Ceiling
3 Conductor Communication Cable
Duct
Insulation
Low Voltage Wires: 12 VDC Furnace
Roof
Insulation
SIDE VIEW
(TOWARD BACK OF RV)
Duct
14-1/4" (±1/8")
Opening
3. Ducts and their joints must be sealed to prevent condensation from forming on adjacent surfaces during operation of the unit.
4. Return air openings must have 40 square inches minimum free area including the lter.
5. Return air to the unit must be ltered to prevent dirt accumulation on unit cooling surface.
6. Air Distribution System Installation
a. Dometic, LLC recommends the basic con-
guration shown on page 6, for installing this system. We have found by testing, that this conguration works best in most applications of this system. It is the responsibility of the installer of this system to review each RV oor plan and determine the following:
5
Page 6
Duct size
Duct layout
Register size
Register location
Thermostat location These items must be determined in conjunction
with the Air Distribution Duct System Sizing and Design Requirements listed in the chart below.
Important: Alternate congurations and methods may
be used which still allow the unit to operate properly; however, these alternate congurations and methods must be approved by Dometic, LLC in writing. The fol­lowing instructions are based upon the use of Return Air Grill Kits 3105007.XXX & 3105935.XXX.
Air Distribution Duct Sizing & Design Chart For Ducted Applications
Roof Cavity Depth 2.0 In. Min. - 5-1/2 In. Max.
Duct Cross Sectional Area 21.0 Sq. In. Min.
Duct Size
Depth Width Total Duct Length Duct Length (short run)
Register Requirements
Number Required Per Run Register Free Air Area Distance From Duct End Distance From Elbow
Total System Static Air Pressure Blower at High Speed, Filter & Grill In Place
Return Air Grill Kit
3105007.XXX
3105935.XXX
1-1/2 In. Min. - 2-1/2 In. Max.
7.0 In. Min. - 10.0 In. Max.
15.0 Ft. Min. - 40.0 Ft. Max. 1/3 Total Duct Length
4 Min.
14.0 Sq. In.
5.0 In. Min. - 8.0 In. Max.
15.0 In.
0.12 - 0.65 In W.C.
Note: Duct sizes listed are inside dimensions.
FIG. 5
Duct Size And Requirements For 3105007.XXX And 3105935.XXX Return Air Grill
Register Required
Short Duct Run Minimum 1/3 Total Duct Length
Total Outlet Air Area Minimum 21.0 Sq. In.
Ducts Min. Max. Depth 1-1/2" 2-1/2" Width 7.0" 10.0" Total Length 15.0' 40.0'
Register Required
Note: Duct Size Is Inside Dimensions
Roof Rafters
6
Register Required
Registers 8 Min. - 12 Max. (Per Unit) 14 Sq. In. Free Area Per Register
Register Required
14-1/4" x 14-1/4" (± 1/8") Roof Opening
Page 7
E. Wiring Requirements
1. Route a copper, with ground, 120 VAC supply wire from the time delay fuse or circuit breaker box to the roof opening. The proper size wire can be determined from chart on page 3. a. This supply wire must be located in the front
portion of the 14-1/4" x 14-1/4" (±1/8") open­ing.
b. The power MUST be on an appropriately
sized separate time delay fuse or circuit breaker. The proper size protection can be determined from the chart on page 3.
c. Make sure that at least 15" of supply wire ex-
tends into the roof opening. This insures an easy connection at the junction box.
d. Wiring must comply with the National Electri-
cal Code ANSI/NFPA-70 and CSA Standard C22.1 (latest edition) and any State or Local Codes or regulations.
e. Protect the wire where it passes into the
opening with approved method. See para­graph "d" above.
2. Route a dedicated 12 VDC supply wire (18-22 AWG) from the RV's converter (ltered side) or battery to the roof opening. a. This supply wire must be located in the front
portion of the 14-1/4" x 14-1/4" (±1/8") open­ing.
b. Make sure that at least 15" of supply wire ex-
tends into the roof opening.
3. Route a 3 conductor cable, 18 to 22 AWG, from the Single Zone LCD (hereinafter referred to as SZLCD) thermostat mounting position into the 14-1/4" x 14-1/4" (±1/8") roof opening. Make sure that at least 15" of the wire extends into the roof opening and 6" extend from the wall at the mount­ing position of the SZLCD thermostat. See Sec­tion F.
4. If system includes a gas furnace, route two 18 gauge thermostat wires from the furnace to the roof opening of the unit that will control it. If more than one furnace is to be used, route the second set of thermostat wires to the second unit. Make sure that 15" of wire extends into the opening.
F. Choosing Thermostat Location
The proper location of the thermostat is very impor-
tant to ensure that it will provide a comfortable RV temperature. Observe the following rules when se­lecting a location:
1. Locate the thermostat 54" above the oor.
2. Install the thermostat on a partition, not on an out­side wall.
3. NEVER expose the thermostat 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.
G. Thermostat and Thermostat Cable Instal-
lation
1. SZLCD Thermostat
Note: Wire colors listed for the three conductor cable match the wire colors in the harness at the unit. Available wire colors may vary.
FIG. 6
12V-
12V+
COMMS
a. Remove the cover from the SZLCD thermo-
stat. Depress tab on bottom of thermostat and separate it from the base.
b. Insert the previously run three (3) conductor
cable through the hole in the base assembly.
c. Cut back the outer cable shield approximate-
ly 3 inches and strip 1/4" insulation from each wire.
d. Mount the thermostat level on the wall using
the screws provided.
e. Make the following connections to the ther-
mostat. See FIG 6.
• Red/white wire to the 12V+ terminal
• Black wire to the 12V– terminal
• Orange wire to the "COMMS" terminal
f. Inspect all connections to make sure they are
tight and not touching any other terminals or wires.
g. Push the wires back through the base into
the wall. Place cover on the thermostat and push until an audible click is heard.
7
Page 8
H. Placing The Unit On The Roof
Personal injury hazard. This unit weighs ap­proximately 100 pounds. To prevent back injury, use a mechanical hoist to place unit on roof. Failure to heed this warning could cause severe personal injury.
1. Remove the unit from the carton and discard car­ton.
2. Place the unit on the roof.
3. Lift and place the unit over the prepared opening using the gasket on the unit as a guide. See FIG.
7.
I. Installing The Unit
1. Check gasket alignment of the unit over the roof opening and adjust if necessary. Unit may be moved from below by slightly lifting. See FIG. 8.
FIG. 8
Center Unit From Below
Roof Gasket
Property damage hazard. Do not slide the unit. Failure to heed this warning may dam­age the neoprene gasket attached to the bot­tom and create a leaky installation.
FIG. 7
FRONT
4. Place the return air cover kit inside the RV. This box contains mounting hardware for the unit and will be used inside the RV.
This completes the outside work. Minor adjustments can be done from inside the RV if required.
Lift And Place
Do Not Slide
2. Remove return air cover and ceiling template from carton.
FIG. 9
Ceiling Template
Return Air Grill
3. All models listed in this manual will use a four (4)
bolt pattern for installing the return air cover kit. These bolts along with the Romex connector and junction box cover are furnished in part number
3107180.006 (bolt kit) and is purchased separately.
4. Reach up into the return air opening and pull the unit electrical cord down. Mount the junction box with screws to the framing in front of the 14-1/4" x 14-1/4" (±1/8") opening . See FIG. 10.
FIG. 10 Control
Divider Plate
Return Air Cover
Cable
Low Voltage Wires
AC Power Supply
Gasket
Mount Junction Box To Front Of Opening
5. Install the Romex connector in the junction box.
6. Hold the ceiling template up to the 14-1/4" x 14-1/4" (±1/8") opening. Be sure the large plate faces the rear of the RV.
8
Page 9
7. Start each mounting bolt through the ceiling tem­plate and up into the unit base pan by hand. Install wood screw in each end of the ceiling template. This insures a tight t of the return air cover to ceiling. See FIG. 11.
FIG. 11
Evenly tighten the four mounting bolts to a
Screws
torque of 40 to 50 inch pounds. This will com­press the roof gasket approximately 1/2". The bolts are self locking so further tightening is not necessary. See FIG. 11.
Front of Vehicle
Finger Tight
Roof Gasket
Tighten To Com­press Gasket To 1/2"
If bolts are left loose there may not be an ad­equate roof seal or if over tightened, damage may occur to the unit base or ceiling template. Tighten to torque specications listed in this manual.
8. Installation of Divider Plate
a. Measure the ceiling to roof thickness:
If distance is 2.0" - 3-3/4", remove perfo-
rated tab from divider plate.
If distance is 3-3/4" - 5-1/2", remove no
tabs.
b. Remove the backing paper from double sided
tape located on ceiling template. See FIG. 12.
FIG. 12
Backing Paper
c. Place divider plate up to bottom of the unit base
pan rmly. The foam tape on the divider plate must seal to bottom of base pan. See FIG. 13.
Improper installation and sealing of divider plate will cause the compressor to quick cycle on the cold control. This may result in fuse or circuit breaker opening and/or lack of cooling.
FIG. 13
Push Divider Plate Firmly Onto Base Pan
Note: The adhesive on the insulation is extremely sticky.
Be sure the part is located where desired before pressing into place. d. With slight pressure push the divider plate
against the double sided tape on the ceiling template.
e. Locate the 1/8" x 7" x 18" self -adhesive insula-
tion supplied with the return air kit. Remove the backing paper from the insulation and carefully stick onto the ceiling template divider panel. See FIG. 14.
FIG. 14
Place Insulation In Position (Do Not Cover Unit Rating Plate)
Foam Tape
2.00" -3.75"
Divider Plate
Excess width is intended to seal the divider
plate to the sides of the 14-1/4" x 14-1/4" (±1/8") opening. This is to help prevent cold air discharge from circulating into the unit return air opening.
If the insulation is too high, stick excess height of insulation to the unit base pan. Do not cover up unit rating plate.
9
Page 10
J. Wiring The System Reach up into the return air opening and pull the re-
maining wires down. See FIG. 10.
1. Low Voltage Wire Connections
Disconnect the positive (+) 12 VDC terminal at the supply battery. Damage to equipment could occur if the 12 VDC is not shut off.
a. Connect the previously run +12 VDC supply
wire to the red wire protruding from the unit return air opening.
b. Connect the previously run –12 VDC supply
wire to both the black wire protruding from the unit return air opening and to wire of the three wire cable that goes to the thermostat 12V– terminal.
c. Connect the previously run furnace thermostat
wires (if applicable) to the blue wires protrud­ing from the return air opening. The polarity of these connections does not matter.
d. Connect the red/white wire protruding from the
unit return air opening to wire of the three wire cable that goes to thermostat 12V+ terminal.
e. Connect the orange wire protruding from the
return air opening to wire of the three wire cable that goes to thermostat COMMS terminal.
2. 120 VAC Power Supply Connection
a. Route power supply line through Romex con-
nector and into junction box on side away from the ceiling template. Tighten connector making sure not to damage wires.
b. Connect white to white; black to black; and
green to green or bare copper wire using ap­propriate size connectors.
c. Tape the connectors to the supply wire to as-
sure they don’t vibrate off. d. Push the wires into the box. e. Install the cover onto the junction box.
K. Installing Decorative Inside Cover
1. Remove the return air grill from the return air cov-
er.
2. Place the return air cover up to the ceiling tem-
plate.
3. Install cover to template with #8 x 3/8" blunt point
Phillips head screws provided (6 required).
4. Reinstall lter return air grill into return air cover.
Align tabs with mating notches and snap into place.
5. Install two hole plugs into screw holes in back of
return air cover. See FIG. 15.
FIG. 15
Hole Plugs
Return Air Cover
Return Air Grill
Disconnect 120 VAC. Failure to obey these instructions could create a shock hazard causing death or severe personal injury.
Note: Wiring must comply with the National Electrical Code
ANSI/NFPA-70 and CSA Standard C22.1 (latest edition) and any State or Local Codes or regulations.
This product is equipped with a 3 wire (ground­ed) system for protection against shock haz­ard. Make sure that the unit is wired and that you connect into a properly grounded 120 VAC circuit and the polarity is correct. Failure to do so could result in death, personal injury or damage to the equipment.
6. This completes the unit installation.
10
Page 11
WIRING DIAGRAM
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