ADVENT AIR ACM135 (02) PDF Document

This air conditioner 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 is affected by conditions inside and outside the RV. Reducing the heat gain of the RV will allow the air conditioner 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 process early in the day will greatly improve the air conditioner’s ability to maintain the desired temperature. In high temperature and high humidity environments, the AC should be set in Cool mode with the Fan Speed in the high position. This will allow for optimal cooling efficiency.

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 removes this moisture from the air during normal operation. Keeping doors and windows closed when this air conditioner is operating will minimize condensation.

A. Read installation and operating instructions carefully before attempting to start your air conditioner 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 except those specifically authorized by manufacturer.

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

This product is designed for use as an RV roof top air conditioner. The use of this product in other applications will void the manufacturer’s warranty.

A. NORMAL LOCATIONS:

The air conditioner 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.

B. OTHER LOCATIONS:

When a roof vent is not available or another location is desired, the following is recommended:

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

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

C. POST LOCATION SELECTION:

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

2. The roof must be capable of supporting 130lbs 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.

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 Romex 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 air conditioner/heat pump 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.

A. Ducting

1. The field fabricated supply ducting must attach to both sides of the ACRG. A minimum of two ducts are required, with one duct attached to each side of the plenum.

2. Each duct must have a minimum height of 1-1/2″. Maximum height cannot exceed 4. Total free area inside each duct must be no less than 10 square inches.

NOTE: To decrease restriction and increase airflow, the ducting should make as few bends and turns as possible. When corners or turns are required, we recommend that you add radii to the corners to keep airflow at a maximum. Ten square inches of free area per duct is the minimum requirement. Larger ducting will improve airflow and system performance.

3. All field fabricated air supply ducting must be insulated to avoid condensation and prevent cooling / heating loss.

B. Registers

Cold air registers should have a minimum discharge area of 48 square inches per system, or 24 square inches per duct run.

Warnings about wiring:

1. U.L. approval requires the power supply to be copper conductors with minimum #12 AWG.

2. To prevent voltage drops greater than 10% during starting loads, adhere to the following guideline: For lengths greater than 50 feet, use #10 AWG.

1. Place the roof top unit over the roof opening.

2. Install freeze sensor.

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 roof unit. Tighten all 4 bolts equally to compress gasket to 33-35 inch pounds.

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, Thermistor (Freeze Sensor), and thermostat cable (if used) according to the wiring diagram. Install the cover over the electrical box using the small screw provided.

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

1. Before template installation, with the upper unit placed over the 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 a 1/4″ gap between 2 fins (between the 2nd tube and 3rd tube) to accept the sensor.

4. Slowly press the fork and sensor into the gap created in step 3, until the clip locks onto the 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 the copper tube.

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

ALTERNATIVE FREEZE SENSOR INSTALLATION: Check the Upper Unit to see if the freeze sensor clip is preinstalled in the evaporator fins. If so, insert the copper sensor from the Ducted Ceiling kit into the clip. Connect to the Control Box Mating Connector. Wrap the wire around the clip strain relief.

1. 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.

2. Route the 115 VAC 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 4 provided screws.

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

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

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 without the return air filter in place. This may plug the unit evaporator coil with dirt and may substantially affect the performance of the unit.

2. Air Return Grill:

Clean the 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.

4. FROST FORMATION ON COOLING COIL:

Under certain conditions, frost may form on the evaporator coil. If this should occur, inspect the filter and clean if dirty. Make sure air louvers are not obstructed. Air conditioners 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 (clockwise).

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 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.

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.

IMPORTANT: When connecting the wires:

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

2. Verify that the connectors have snapped together on both sides. Do not use excessive force when joining the connectors.

IMPORTANT: When connecting the wires:

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

2. Verify that the connectors have snapped together on both sides. Do not use excessive force when joining the connectors.