ADVENT AIR ACTH11 (01) PDF Document

The efficiency of the ADVENT AIR ACTH11 air conditioner is affected by the conditions inside and outside of 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 ADVENT AIR ACTH11 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 the ADVENT AIR ACTH11 air conditioner is operating will minimize condensation.

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 it dry, and then reinstall.

Note: Never run the air conditioner without the air filter in place. This may plug the unit evaporator coil with dirt and may substantially affect the performance of the unit.

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.

FAN MOTOR:

The fan motor is factory lubricated and requires no service.

If the ADVENT AIR ACTH11 unit does not operate, follow these steps:

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, contact a local service center for further help. This unit must be serviced by qualified service personnel only.

Under certain conditions, frost may form on the evaporator coil. If this should occur, inspect the filter and clean it if dirty. Make sure the 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).

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.

The following table outlines the thermostat wiring for the ADVENT AIR ACTH11.

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.

The following table outlines the wiring for the main relay box.

Follow these steps to install the anti-freezing sensor:

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 dip is secured to the copper tube.

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

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, it is recommended 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.

Please adhere to the following 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.