ADVENT AIR ACTH12 (03) PDF Document

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. Read and follow all safety information, installation guides, recommended precautions, and safe operating instructions.

This air conditioner / heat pump is designed for:

1. Installation on a recreational vehicle.

2. Mounting on the roof of a recreational vehicle.

3. Roof construction with rafters/joists on 16 inch centers.

4. 2.5″ to 5.5″ inch thick roofs.

The efficiency of the air conditioner / heat pump will be affected by the conditions inside and outside of the RV. Reducing the heat gain of the RV will allow the unit to function with greater efficiency. Here are some suggestions to reduce heat gain in your RV:

1. Select a shaded area to park your RV.

2. Close windows and utilize the blinds and / or curtains.

3. Keep doors shut.

4. Avoid using appliances that produce heat.

Beginning the cooling / heating process early in the day will greatly improve the heat pump’s ability to maintain the desired temperature. In high temperature and high humidity environments, the air conditioner / heat pump should be set in Cool mode with the Fan Speed in the high position. This will allow for optimal cooling efficiency.

The manufacturer of this air conditioner / heat pump 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. The air conditioner / heat pump removes this moisture from the air during cooling operation. Keeping doors and windows closed when this air conditioner/heat pump is operating will minimize condensation.

If the unit does not operate:

1. If the RV is connected to a generator, check to be sure the generator is running and producing the proper power.

2. If the RV is connected to shore power, check to be sure the supply breaker is sized properly to run the air conditioner / heat pump load and it is plugged into the power supply.

3. Check your fuse or circuit breaker to see if it is off.

4. After the above checks, call your local service center for further help. This unit must be serviced by qualified service personnel only.

1. AIR FILTER:

Remove the return air filter (after every 30 days of use) located above the removable air intake grill. Wash the filter with soap and warm water, let dry and then reinstall.

Note: Never run the air conditioner / heat pump without putting the air filter back in place. This may plug the indoor coil with dirt and may substantially affect the performance of the unit.

2. Air Return Grill:

Clean panel and control panel with a soft cloth dampened with a mild detergent. Never use furniture polish or harsh chemicals.

3. FAN MOTOR:

Factory lubricated and requires no service.

Under certain conditions, frost may form on the indoor coil. If this should occur, inspect the filter and clean if dirty. Make sure air louvers are not obstructed. Air conditioners / heat pumps have a greater tendency to frost when the outside temperature is relatively low. This may be prevented by adjusting the thermostat control to a warmer setting.

Notes:

1. Consult the National Electric Code for proper sizing for wire lengths over 24 ft.

2. 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.

3. CIRCUIT PROTECTION: Time Delay Fuse or HACR Circuit Breakers Required.

A. Read installation and operating instructions carefully before attempting to start your air conditioner / heat pump installation.

B. The manufacturer will not be liable for any damages or injury incurred due to failure to follow 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 / heat pump except those specifically authorized by manufacturer.

E. This equipment must be serviced by qualified personnel and some states require licensed personnel.

NORMAL LOCATIONS:

The unit is designed to fit over an existing roof vent opening. When the vent is removed, it normally creates a 14-1/4″ x 14-1/4″ ±1/8″ opening.

OTHER LOCATIONS:

When a roof vent is not available or another location is desired, it is recommended to follow these guidelines:

1. For one unit installation: The air conditioner / heat pump should be mounted slightly forward of center (front to back) and centered from side to side.

2. For two unit installation: Install one air conditioner / heat pump 1/3 distance and the other air conditioner / heat pump 2/3’s from front of RV and centered from side to side.

It is preferred that this air conditioner / heat pump be installed in a relatively flat and level roof section measured with the RV parked on a level surface; however, up to 15 degree slant to either side, or front-to-back is acceptable.

POST LOCATION SELECTION:

1. Check for obstructions in the area where the air conditioner / heat pump will be installed. A minimum clearance of 18″ is required for the rear section of the unit to any other roof mounted object.

2. The roof must be capable of supporting 100 lbs while the RV is in motion. Normally, a 200 lb. static load design will meet this requirement.

WARNING: There may be electrical wiring between the roof and the ceiling. Disconnect 120 volt AC power cord and the positive (+) 12 volt DC terminal at the supply battery. Failure to follow this instruction may create a shock hazard causing death or severe personal injury.

A. EXISTING ROOF VENT REMOVAL:

1. Unscrew and remove the roof vent.

2. Remove all caulking compound around opening.

3. Seal all screw holes and seams where the roof gasket will be located. Use a good grade of all weather sealant.

B. NEW OPENING:

1. A 14-1/4″ x 14-1/4″ +1/8″ opening must be cut through the roof and ceiling of the RV. It is recommended this opening be located between roof framework.

2. Mark a 14-1/4″ x 14-1/4″ square on the roof and carefully cut the opening.

3. Using the roof opening as a guide, cut the matching hole in the ceiling.

C. OPENING PREPARATION:

1. If the opening exceeds 14-3/8″ x 14-3/8″, it will be necessary to install spacers.

2. If the opening is less than 14-1/8″ x 14-1/8″, it must be enlarged.

3. Route a 12/3 Rmoex type supply line from the circuit breaker box to the Front of the roof opening.

a. The power supply must be on a separate 20 amp Time Delay Fuse or HACR Circuit Breaker.

b. Wiring must comply with all National, State and Local wiring codes.

c. Make sure at least 15″ of wire extend into the roof opening to ensure easy connections.

4. The opening must be framed to provide adequate support and prevent air from being drawn from the roof cavity. Lumber 3/4″ thick or more and long enough to bridge the opening must be used. Remember to provide an entrance hole in the front of the opening for 110v, 12v, and thermostat wires.

5. The 14-1/4″ x 14-1/4″ (±1/8) roof opening is part of the return air duct and must be finished in accordance with NFPA standard 501C, Standard for Recreational Vehicles, Section 2-7.

CAUTION: 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 air conditioner/heat pump may leak into the interior causing damage to the product and RV.

Thermostat Wiring:

IMPORTANT: When connecting the wires:

1. Make any adjustments required to relieve pinched or stressed wiring.

2. Remove 1/4″ insulation from the 4 wires. Use a small Flat-head screw driver to loosen the wire terminal screws. Push each corresponding wire into the proper terminal hole and tighten each screw.

The default setting is 1 OFF, 2 OFF, 3 ON. If the switches are not set properly the LCD will display Er.

Dip Switch 1:

Off: Heat Strip function disable

On: Heat Strip function enable

Dip Switch 2:

Off: Heat Pump function disable

On: Heat Pump function enable

Dip Switch 3:

Off: Furnace function disable

On: Furnace function enable

1. Before template installation, with upper unit placed over opening; the freeze sensor should be installed in the evaporator coil.

2. Remove the sensor from the parts bag.

3. Use a flat screw driver to create 1/4″ gap between 2 fins (between 2nd tube and 3rd tube) to accept the sensor.

4. Slowly press fork and sensor into gap created in step 3, until clip locks onto 3rd coil.

5. Install the template and electrical box on the ceiling.

6. Connect the sensor.

CAUTION:

1. Make sure the sensor clip is secured to copper tube.

2. Don’t pull the wire to avoid damage to sensor.

Alternative Freeze Sensor Installation:

Check Upper Unit to see if freeze sensor clip is preinstalled in evaporator fins. If so, insert the copper sensor from the Ducted Ceiling kit into the clip as shown in the manual. Connect it to the Control Box Mating Connector. Insert the Copper Freeze Sensor into the plastic clip and wrap the wire around the clip for strain relief.

1. Place the air conditioner / heat pump over the roof opening.

2. Install freeze sensor. Some units may contain a preinstalled, plastic, retaining clip for the freeze sensor. If the clip is present in the evaporator coil, use this clip and discard the clip that came with the freeze sensor. Insert the freeze sensor into the plastic clip and ensure it is secured properly. Connect the freeze sensor harness to the relay box mating harness.

3. Position the mount frame into the ceiling opening.

4. Using the four bolts provided, hold up the mount template to the ceiling. The four mounting bolts are to be inserted up through the bottom of the mount template and into the bottom of the air conditioner / heat pump. Tighten all 4 bolts equally to compress the gasket 33-35 inch pounds. When moving the unit, be sure not to damage the gasket by sliding it across the roof.

5. Install divider with foam seal against base pan of upper unit. On thinner roofs, the divider may be too high, so break away additional portion. Remove paper cover on fixed divider, insert loose divider against base pan and stick to fixed divider.

6. Cut the insulation to the height of the divider, center insulation on divider before removing paper backing and apply to divider. Excess insulation will help ensure the seal at the end of the divider/frame.

7. Connect 115VAC and 12VDC wires, Freeze Sensor Thermistor, Heat Pump specific (Outdoor Coil Thermistor, Outdoor Ambient Thermistor), and thermostat cable according to the wiring diagram. Install the cover over the electrical box using the small screw provided.

8. Seal all seams between output airside and return airside with insulation and foil tape.

WARNING – SHOCK HAZARD: To prevent the possibility of severe personal injury or equipment damage due to electrical shock, always be sure the electrical power is disconnected or off before beginning installation.

1. Route the 115VAC supply wiring previously routed into the frame of the roof opening, through the strain relief of the electrical box and into the high voltage wiring area.

DANGER: TO PREVENT THE POSSIBILITY OF SHOCK INJURY FROM APPLIANCE OPERATION: THE WHITE WIRE MUST BE CONNECTED TO NEUTRAL IN THE SERVICE BOX ENTRANCE AND THE GREEN GROUND WIRE MUST BE CONNECTED TO A GROUNDING SCREW.

1. Position the grill next to the interior frame and attach it with the provided screws.

2. Install the filter on the air intake grill section.

3. Snap the intake grill section onto the main grille.

4. Install the screw covers.