DOMETIC 630025 Heat Pump

Product Information

Specifications

• Model Number: 630025.331
• Serial Number: N/A
• ADB Number: 650015
• ADB Serial Number: N/A
• Description: Heat Pump Roof Top Unit
• Use With Air Distribution Box Model
• Control: Electric Heat

Product Usage Instructions

Installation Requirements

To install the heat pump, you will need the following tools:

• 2 Phillips screwdriver with 9/32 maximum diameter x 1-1/4 minimum length.

Installation Steps

1. Ensure that the recreational vehicle is manufactured or modified to accommodate the installation of the heat pump.
2. Mount the heat pump on the roof of the recreational vehicle, following the manufacturer’s instructions.
3. Make sure the roof construction has rafters/joists on a minimum of 16-inch centres.
4. Maintain a minimum distance of 1.00 inches and a maximum of 5.5 inches between the roof and the ceiling of the recreational vehicle.

Operating Instructions

1. Make sure the heat pump is properly installed and connected to the power source.
2. Refer to the control panel or user interface of the heat pump for temperature and mode settings.
3. Adjust the temperature and mode settings according to your preference.
4. Refer to the user manual for additional operating instructions and maintenance guidelines.

FAQ

• Q: Can I install the heat pump myself?
• A: No, it is recommended to have the heat pump installed by a qualified service technician for safety and proper installation.
• Q: How can I improve the performance of the air conditioner?
• A: To improve performance, you can reduce heat gain by parking in shaded areas, using window shades, keeping windows and doors shut, and avoiding the use of heat-producing appliances during extremely high outdoor temperatures.
• Q: What tools do I need for installation?
• A: You will need a #2 Phillips screwdriver with 9/32 maximum diameter x 1-1/4 minimum length.

RECORD THIS UNIT INFORMATION
FOR FUTURE REFERENCE:

• Model Number…………………………………………..
• Serial Number…………………………………………..
• ADB Number……………………………………………..
• ADB Serial Number…………………………………….
• Date Purchased…………………………………………..

Roof Top Unit

Description| Model| Use With Air Distribution Box
Model| Control| Electric Heat
Heat Pump| 630025

650015

| 3311670.XXX| Integral Mechanical| N/A

Note: Installation requires a #2 phillips screwdriver with 9/32″ maximum diameter x 1-1/4″ minimum length.

WARNING

This manual must be read and understood before installation, adjustment, service, or maintenance is performed. This unit must be installed by a qualified service technician. Modification of this product can be extremely hazardous and could result in personal injury or property damage.

IMPORTANT SAFETY INSTRUCTIONS

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 that, if not avoided, could result in minor or moderate injury.
NOTICE is used to address practices not related to personal injury.
WARNING Read and follow all safety information and instructions to avoid personal injury.

GENERAL INFORMATION

• A. Product features or specifications as described or illustrated are subject to change without notice.
• B. This heat pump (hereinafter referred to as the “unit”) is designed for:

1. Installation on a recreational vehicle during or after the time the vehicle is manufactured.
2. Mounting on the roof of a recreational vehicle.
3. Roof construction with rafters/joists on a minimum of 16-inch centres.
4. Minimum of 1.00 inch and maximum of 5.5 inches distance between roof to ceiling of recreational vehicle.

The ability of the 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 RV 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 efficiency in high humidity or high outside temperature.
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 a high heat gain, accessories like Dometic outdoor patio and window awnings will reduce heat gain by removing direct exposure to the sun. They also add a nice area to enjoy company during the cool of the evening.

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.

SPECIFICATIONS

• For wire length over 24 ft., consult the National Electric Code for proper sizing.
• Dometic Corporation gives GENERAL guidelines for generator requirements. These guidelines come from experiences people have had in actual applications. When sizing the generator, the total power usage of your recreational vehicle must be considered. Keep in mind generators lose power at high altitudes and from lack of maintenance.
• CIRCUIT PROTECTION: Time Delay Fuse or Circuit Breakers Required.

INSTALLATION INSTRUCTIONS

Precautions

WARNING

PERSONAL INJURY HAZARD. Failure to obey these installation instructions may cause serious personal injury and/or property damage.

1. Read installation and operating instructions carefully before attempting to start this unit installation.
2. Dometic Corporation will not be liable for any damages or injury incurred due to failure to follow 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 specifically authorized in writing by Dometic Corporation.
5. This equipment MUST be serviced by qualified personnel and some states require these people to be licensed.

Choosing Proper Location For The Unit
This unit is specifically 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. Normal The unit is designed to fit over an existing roof vent opening.

2. In other locations no roof vent is available or another location is desired, the following is recommended:

   • For one unit installation: The unit should be mounted slightly forward of centre (front to back) and centred from side to side.
   • For two-unit installations: Install one unit 1/3 and one unit 2/3 from the front of the RV and centred from side to side.
     It is preferred that the unit be installed on a relatively flat and level roof section with the RV parked on a level surface but up to a 8° tilt is acceptable.

3. After the Location Has Been Selected

   • Check for obstructions in the area where the unit will be installed. See FIG. 1.

• 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.

NOTICE

• PROPERTY DAMAGE HAZARD. It is the responsibility of the installer of this system to ensure the structural integrity of the RV roof. Never create a low spot on the roof where water will collect. Failure to obey this warning may cause water damage to the product and the RV.
• Check inside the RV for air distribution box obstructions. (i.e. door openings, room dividers, curtains, ceiling fixtures, etc.) See FIG. 2.

Roof Preparation

• Opening Requirements – Before preparing the ceiling opening, read all of the following instructions before beginning the installation.
  If an existing roof vent opening will not be used a 14-1/4″ x 14-1/4″ (± 1/8″) opening must be cut through the roof and ceiling of the RV. This opening must be located between the roof reinforcing members.

WARNING

SHOCK HAZARD. There may be electrical wiring between the roof and the ceiling. Disconnect the 120 VAC power supply and the positive (+) 12 VDC terminal at the supply battery. Failure to obey this warning may cause death or severe personal injury.

The 14-1/4″ x 14-1/4″ (± 1/8″) opening is part of the return air system of the unit and MUST be finished under ANSI A119.2.

• Roof Vent Removal
• Unscrew and remove the roof vent.
• Remove all caulking compounds around the opening.
• Seal all screw holes and seams where the roof gasket will be located. Use a good grade of all-weather sealant.
• If the opening exceeds 14-3/8″ x 14-3/8″, it will be necessary to re-size the opening to 14-1/4″ x 14-1/4″ (± 1/8″).
• If the opening is less than 14-1/8″ x 14-1/8″, it must be enlarged to 14-1/4″ x 14-1/4″ (± 1/8″).
• New opening-(installations other than vent openings)
• Mark a 14-1/4″ x 14-1/4″ (±1/8″) square on the roof and carefully cut the opening.
• Using the roof opening as a guide, cut the matching hole in the ceiling.
• The opening created must be framed to provide adequate support and prevent air from being drawn from the roof cavity. Framing stock 3/4″ thick or more must be used. Remember to provide an entrance hole for power supplies at the front of the opening. See FIG. 3.

NOTICE

PROPERTY DAMAGE HAZARD. It is the responsibility of the installer of this system to ensure the structural integrity of the RV roof. Never create a low spot on the roof where water will collect. Failure to obey this warning may cause water damage to the product and the RV.

Wiring Requirements

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 the chart on page 3.
Note: If vent fan was removed, the existing wire may be used provided it is of proper size, location, and correctly fused.

• This supply wire must be located in the front portion of the 14-1/4″ x 14-1/4″ (±1/8″) opening.
• 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.
• Make sure at least 15″ of wire extends into the roof opening. This will ensure easy connection at the junction box.
• 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.
• Protect the wire where it passes into the opening with the approved method. See paragraph “d” above.

Placing The Unit On The Roof

WARNING

PERSONAL INJURY HAZARD. This unit weighs approximately 100 pounds. To prevent back injury, use a mechanical hoist to place the unit on the roof. Failure to obey this warning could cause severe personal injury.

1. Remove the unit from the carton and discard the 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. 4.

NOTICE

PROPERTY DAMAGE HAZARD. Do not slide the unit. Failure to obey this warning may damage the neoprene gasket attached to the bottom and create a leaky installation.

• Place the air distribution box 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.

Installing The Unit

1. Check the gasket alignment of the unit over the roof opening and adjust if necessary. The unit may be moved from below by slightly lifting. See FIG. 5.
2. Remove air distribution box and mounting hardware from the air distribution box kit carton.
3. Remove the wire tie holding centre of the rear aluminium bracket to a plastic template.
4. Reach up into the return air opening of the unit and pull the unit’s electrical cord down for a later connection. See FIG. 6.

• Base Pan Duct Adapter.

• Remove the liner from the foam tape and position on the base so the screw hole and air openings are aligned. See FIG. 7.

• Install the provided screw to help hold the duct adapter to the base pan if desired.

• 120 VAC Power Supply Connection

WARNING

SHOCK HAZARD. Disconnect 120 VAC. Failure to obey this warning could create a shock hazard causing death or severe personal injury.

Note: Wiring MUST comply with National Electrical Code ANSI/NFPA-70 and CSA Standard C22.1 (latest edition) and any State or Local Codes or regulations.

• Install the strain relief in the junction box.
• Route the previously run 120 VAC power supply wire through the strain relief and into the junction box. Tighten the connector making sure not to damage wires.

Note: Connect wiring per schematic with UL-listed wire connectors for the size of the wire being connected.

WARNING

SHOCK HAZARD. This product is equipped with a 3-wire (grounded) system for protection against shock hazards. Make sure that the unit is wired into a properly grounded 120 VAC circuit and that the polarity is correct. Failure to do so could result in death, personal injury or damage to the equipment.

• Connect white to white; black to black; and green to the green or bare copper wire using appropriate-size connectors.

• Tape the connectors to the supply wire to ensure they don’t vibrate off.

• Push the wires into the box.

• Insert the back edge of the cover under the tabs and snap the control box cover into place. Secure cover with the screw provided. See FIG. 8.

• Ceiling template installation.

• Note: The large centre hole in the ceiling template goes to the rear. Ensure that the thermostat bulb is not moved during installation.

• Plug the nine-pin cord into the control box on the ceiling template. See Fig. 9.

• Start each mounting bolt by hand before tightening any of them. The threaded inserts in the base pan can be seen to aid in starting the bolts.

• This installation uses a 3 bolt pattern, one in the rear centre and two in the front corners. See Fig. 10.

Even tighten the bolts to a torque of 40 to 50 inch pounds. This will compress the roof gasket to approximately 1/2″. The bolts are self-locking so further tightening is not necessary. See FIG. 10.

NOTICE

PROPERTY DAMAGE HAZARD. 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 specifications listed in this manual.

• Template/Duct connector
• Pull the duct down through the template opening.
• Cut the duct 1/2″-1″ below the template opening. See Fig. 10.
• Align the template duct adapter with the template duct hole making sure the screw holes line up (if not rotate 1/2 turn). Insert the template duct adapter into the duct. Leave one loop of duct wire below the duct adapter groove. Do not insert tabs inside of the duct.
• Snap the duct adapter into the template and install 2 screws through the duct adapter tabs into the ceiling template. See Fig. 11.

Air Distribution Box Installation

Important: The inner walls of the ADB go inside the walls of the ceiling template during installation.

1. Working from the rear looking forward with the rear tipped down, place the air distribution box’s inner walls against the inside of the ceiling template walls. Slide the air distribution box backward until it touches the template. Raise the air distribution box to the ceiling. See FIG. 12.
2. Push up on the ADB at the locations indicated by the paper labels to engage the snap locks. There will be a quiet click heard when each latch engages. See FIG. 12.
3. Hold the air distribution box to the ceiling with one hand and install two coarse threaded 3.5 mm X 19 mm sharp pointed screws in the location shown in FIG. 13.
4. Auxiliary screws may be installed at the locations shown. These are NOT required to secure the ADB to the template but may be desired for aesthetic purposes in some ceiling geometries. See FIG. 13.
5. Filter installation. Slide filters into slots in the air distribution box. The outward curved side of the filter handle faces the ceiling. See FIG. 13.
6. Knob installation. Install the two knobs provided on the ends of the thermostat and selector switch shafts. Align the slot in knob with the alignment post on the shaft and push into position.
7. The power supply to the unit may now be turned “ON”.
8. Your unit is now installed and ready for operation. Read the following operating instructions before attempting to run the unit.

OPERATING INSTRUCTIONS

Controls

1. The selector switch has 10 positions including “OFF”. This controls fan speed, heating mode, and cooling modes. See FIG. 14.
2. The thermostat controls the compressor ON/OFF operation for a temperature range from approximately 65° F. to 90° F. at the ADB inlet, depending on the knob position. See FIG. 14.
   The blower runs continually at the speed selected.

Important: When the unit is turned on and the thermostat calls for cooling or heating, the compressor will start. After shutting the unit down manually by either the selector switch or the thermostat, always wait 2-3 minutes before turning on the unit. This allows the refrigerant pressures in the unit system to equalize so the compressor may start.

Cooling Operation (Blue Graphic)

1. Set the thermostat at the desired temperature level. See FIG. 14.
2. Select the cooling mode that best satisfies your needs:
   • HIGH COOL: Selected when maximum cooling and dehumidification are required.
   • MEDIUM COOL: Selected when normal cooling is required.
   • LOW COOL: Selected to the main room at the desired comfort level. Normally this speed is used for nighttime operation.

Heating Operation (Red Graphic)
N o te: The heat modes of operation will not replace a furnace for heating your RV in cold weather. The intent is to remove the chill on cool days or mornings.

1. Turn the selector switch to the “HEAT” mode that best satisfies your needs. See FIG. 14.
2. Set the thermostat to the desired temperature level.

Fan Operation (Gray Graphic)

1. This will circulate the air in the RV without cooling or heating. Turn the selector switch to the “FAN” mode that best satisfies your needs.

OFF” Position ( )

MAINTENANCE

Air Filters

1. Periodically (a minimum of every 2 weeks of operation) slide out the return air filters located on the end of the air distribution box. Wash the filters with soap and warm water, let dry and then reinstall.

Note: To ensure easy future removal the filters need to be replaced with the domed side of their handle positioned towards the ceiling.
Note: Never run the unit without both return air filters in place. This will plug the unit evaporator coil with dirt and may substantially degrade the performance of the unit over time.

Air Distribution Box Housing

1. Clean air distribution box housing with a soft cloth dampened with a mild detergent. Never use furniture polish or scouring powders.

Fan Motor

1. The blower motor is factory-lubricated and requires no service.

Frost Formation

1. On Cooling Coil
   • Frost on a small portion of the coil is not unusual. Under certain conditions, ice may form on the evaporator coil. This is indicated by very cold output at very low air speed and the icing can be seen through the air inlet holes with the filters removed. If this should occur, inspect the filter and clean if dirty. Make sure air vents are open and not obstructed. Units have a greater tendency to frost when the outside temperature is relatively low. This may be prevented by adjusting the thermostat control knob to a warmer setting (counterclockwise). Should frosting continue, operate on any fan ONLY setting until the cooling coil is free of frost; then resume normal operation. If frost conditions persist, contact your local service center for assistance.
2. On Outdoor Coil While Heating
   • Operation at low outdoor temperatures causes low coil temperatures. This can result in ice forming on the outdoor coil in certain conditions. This is indicated by reduced heat output and could fully stop fan rotation in extreme conditions. To avoid this the system controls turn off the compressor if the outdoor temperature drops below 42° F. and returns heating when the temperature raises 5° F.

SERVICE-UNIT DOES NOT OPERATE
If your unit fails to operate or operates improperly, check the following before calling your service centre.

• A. If the RV is connected to the motor generator, check to be sure the motor generator is running and producing power.
• B. If the RV is connected to the power supply by a landline, check to be sure the line is sized properly to run the unit load and it is plugged into the power supply.
• C. Check your fuse or circuit breaker to see if it is open. Ensure the fuse is not burnt, or the circuit breaker is “ON” and not activated.
• D. After the above checks, call your local service centre for further help. This unit must be serviced by qualified service personnel only.
• E. When calling for service, always give the following:

1. The unit model and serial number are found on the identification label located on the base pan of the unit bottom. (Remove the filter and view through a network of holes)
2. The air distribution box model and serial number are found on the rating plate located on the ceiling template. Observe this rating plate through the air distribution box’s right-side vent opening.

WIRING DIAGRAM

Unit Wiring Diagram

Air Distribution Box Wiring Diagram

CONTACT

USA

• SERVICE OFFICE
• Dometic Corporation
• 1120 North Main Street
• Elkhart, IN 46514

CANADA

• Dometic Corporation
• 46 Zatonski, Unit 3
• Brantford, Ontario
• CANADA N3T 5L8
• SERVICE CENTER &
• DEALER LOCATIONS
• Please Visit www.eDometic.com.

References

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