Installation manual

ManualsBrandsAtwood Mobile Products ManualsAir ConditionerAC-1511

AC IOM 12/03/2014 rev 8 1

574-206-9713

LITERATURE N U M B E R MPD 15000

Rooftop Air

Conditioner

for

Recreational Vehicles

Non-Ducted Models

AC-1351 & AC-1501

•Installation •Operation •Maintenance

Effective 12/03/2014

This air conditioner design has been certified by the Canadian

Standards Association for installation in recreation vehicles.

SERVICE CALLS & QUESTIONS

Location and phone numbers of qualified Service Centers can

be found at our website http:/www.atwoodmobile.com or call

866-869-3116 to locate a Service Center.

WARNING: It is important that this installation

manual is read and understood before

installation. The unit must be installed by a

qualified service technician. Failure to properly

install the unit or attempting to modify it in any

way can be extremely hazardous and may

result in property damage and personal injury

and will void the warranty.

BEFORE INSTALLATION

Ensure that the installation instructions have been

properly read and understood.

Installation must conform to Local wiring codes and

regulations or, in the absence of local codes, the

Standard on Recreational Vehicles, NFPA 1192. and

National Electrical Code NFPA 70.

DO NOT attempt to modify or add components to the

installation procedure.

This equipment must only be serviced by a licensed

refrigeration mechanic to maintain warranty

coverage.

If your installation varies from the method outlined

please contact Atwood Mobile Products, LLC for specialty

advice.

Atwood will not be held responsible for problems

relating to incorrect or improper installation

methods.

GENERAL INFORMATION

PURPOSE

This Atwood Air Command air conditioning unit is

designed for installation on the roof of a recreational

vehicle to provide cooling with AC-1351 models and

cooling/heating with AC-1501 models.

The roof must be capable of supporting the weight of the

unit which is 86lbs (39Kg).

-The absolute minimum thickness of the roof must

not be less than 1 inch (25mm).

Roof thicknesses between 5.0-6.5 inches (125-165mm)

require extra-long hold down bolts Atwood PN 15086.

-Trimming of the ductwork and/or bolts may be

necessary depending on the roof thickness

It is important that the unit is installed properly and

according to the recommended guidelines.

II.

ENSURING EFFECTIVE OPERATION

The effectiveness of the air conditioner is dependent on

several factors e.g. size and heat load of the vehicle. When

an Atwood unit is installed Atwood assumes that the

vehicle is well insulated with 1 inch (25mm) foam minimum

in all walls and roof, that the windows are of moderate size

(preferably double glazed) and the roof vents are airtight

when closed. Other methods of reducing heat load include:

-Closing all doors, hatches, windows and blinds

-Position the vehicle so if porch is used, it will face the sun

and protect the windows from direct radiation.

-Turning off appliances that might increase the heat load

-Ensuring the vehicle is parked in a shaded position.

In periods of extreme high temperature it is recommended

to start the air conditioner earlier in the morning to greatly

improve its ability to cope with the expected high heat load.

III.

CONDENSATION

In areas of high humidity, the humid air within the RV will

cause “sweating” or condensation in parts of the unit as the

humid warm air contacts the colder air discharge system. If

this occurs please ensure the following:

-Closing all doors, hatches, windows and blinds to limit the

ingress of warm humid air

Avoid running the inside fan on LOW or AUTO in such

conditions. Running the fan on HI fan speed will result in

higher airflow and reduce the tendency to have

condensation form.

Summary of content (18 pages)

PAGE 1
LITERATURE N U M B E R MPD 15000 Rooftop Air Conditioner for Recreational Vehicles Non-Ducted Models 574-206-9713 AC-1351 & AC-1501 •Installation •Operation •Maintenance Effective 12/03/2014 This air conditioner design has been certified by the Canadian Standards Association for installation in recreation vehicles. GENERAL INFORMATION I. PURPOSE SERVICE CALLS & QUESTIONS Location and phone numbers of qualified Service Centers can be found at our website http:/www.atwoodmobile.
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INSTALLATION PARTS LIST MAIN COMPONENTS 1) Atwood AirCommand Rooftop Air conditioner 2) Roof Seal Gasket 2 Pcs 3) Adapter 4) Extension Duct 5) Brace Assembly 6) Plenum 7) Plenum Filters x2 FITTINGS & FIXTURES 8) M8 Bolts x 4 9) Hold Down Bars x 4 10) Plenum Cover Screws x 4 11) Self Tapping Screws x 6 INSTALLATION POSITION Minimum 1” clearance from side grilles to any obstruction Minimum 8” clearance from rear grilles to any vertical face, 4” to any 45 degree face.
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Unit Installation (Non-Ducted) Before beginning, mark out the position of the unit considering the following important requirements: - The air conditioner should be situated as centrally as possible on the vehicle, to ensure even air distribution. - The front of the unit MUST face the direction of travel; failure to follow this instruction will result in damage to the condenser fans.
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POSITION UNIT ON ROOF - Remove the air conditioner from the carton. - Mount the air conditioner on the roof with the roof gasket using either Fig 6 or Fig 6a. - Position the unit so that the four M8 mounting holes will line up with the four corners of the square roof hole (Fig 7).
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ASSESS ROOF THICKNESS - Measure the roof thickness and consult the table across to check if adjustments to the hold down bolt and duct length are required. Failure to cut the duct properly can result in an incorrect seal which will adversely affect the unit’s performance Roof Thickness Inch (mm) – Include ‘H’ frame if used. 4.92 (125) 3.94 (100) 3.15 (80) 2.36 (60) 1.57 (40) 1.0 (25) (absolute minimum) Duct length required – Inch (mm) Hold down bolt length required – Inch (mm) 5.71 (145) as supplied 4.
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ATTACH DUCT TO UNIT - Raise the brace assembly and slip the extension duct over the outside diameter of the adapter underneath the rooftop unit. (Fig 11-12). When attaching the duct to the unit take care to ensure it forms a tight, unbroken seal that doesn’t allow discharge air to escape. - Engage and tighten the four M8 bolts with the threaded inserts in the rooftop unit. - Recommended tightening torque of the bolts is 7 N.m (5.2 lb-ft).
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ATTACH PLENUM COVER - Secure the main plenum cover to the duct assembly with the 4 screws provided (Fig 15). TIP: It is important that these screws are not over tightened otherwise the plenum may crack. - Remove the filter elements by pulling them out of the plenum, and use the six self-tapping counter sunk screws to secure the covers edges to the vehicle ceiling (Fig 16). In some instances a very small pilot hole may need to be drilled to guide the screws into place.
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VERIFYING NORMAL OPERATION 1. Turn the power on at the circuit breaker 2. Press the ON/OFF button and press the MODE button to select FAN 3. Cycle through the LO, MED and HIGH fan speeds checking that all speeds run. 4. Set mode to COOL, adjust temp via up/down buttons to approx. 6°F (3°C) less than the display temp (ie. Room temp) compressor will start within three minutes. 5. Set mode to HEAT, similarly set temp to approx. 6°F (3°C) above display temp. Compressor will start within three minutes.
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GENERAL SPECIFICATIONS Air – Conditioner Height - 12.8 inch (325mm) Width – 26.6 inch (675mm) Length - 38.4 inch ( 975mm) Weight – 99 lb (45kg) Air Discharge Plenum Height - 2.6 inch (65mm) Width - 21.0 inch (535mm) Length - 21.8 inch (555mm) Weight – 1.1 lb ( 2.4kg) AC Description 13.5K Non-Ducted AC – White 13.5K Non-Ducted AC – Black 15K Non-Ducted AC – W hite 15K Non-Ducted AC – Black Model 13500 Electrical Rating: Nominal Cooling Capacity: Nominal Heating Capacity: F.L.A. Cooling: F.L.A.
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OPERATING INSTRUCTIONS – Continued MODE - DRY - The DRY mode can provide mild dehumidification for room temperatures above the set point and when additional cooling is not required. - Press MODE pushbutton to highlight DRY. - Set the temperature to desired set point. Note: the fan speed is locked in LOW.
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OPERATING INSTRUCTIONS FOR ADJUSTING THE THERMOSTAT Infra red reception Temperature display area SENSOR To receive wireless handset sign al ON/OFF Display timer setting, set or ro om temperature in C or F Room temperature setting button Timer button TEMP Press to activate on/off timer programming mode TIMER AUTO HIGH MED LOW COOL DRY HEAT FAN FAN FURNACE MODE On/Off button Press once to start operation Press again to stop operation Mode button Press to select cool, dry, heat , fan, or auto
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OPERATING INSTRUCTIONS FOR ADJUSTING THE THERMOSTAT (cont) 3. Mode setting  Press MODE button to change the operation mode as follow:- Cool→Dry→Heat→Fan→Auto Cool/Heat Heat and Auto mode is not available for cooling only model. Auto mode is not available for model where furnace is primary heating.  Heat LED flashes during outdoor defrost cycle. MODE button press is invalid during this cycle. 4. Furnace setting (model 1511 only)  This function is available in heat pump + furnace model only.
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OPERATING INSTRUCTIONS FOR ADJUSTING THE THERMOSTAT (cont) 7. On/Off timer setting  When the system is on, setting the timer will turn off the unit after the programmed hours were counted down. When the system is off, setting the timer will turn on the unit after the programmed hours were counted down.  Press TIMER button once to activate on/off timer programming mode. Timer LED and temperature display area flash for 3 seconds showing the number of count down hours left.
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TROUBLESHOOTING o o Control Pad will not illuminate when ON/OFF button is pressed o o o Unit does not cool o o Unit does not heat o o o o o Insufficient cooling capacity o o o AC IOM 12/03/2014 rev 8 16 Check circuit breaker is on Control cable may be unplugged between outside unit and inside fascia Check power supply to vehicle Check circuit breaker is on Control cable may be unplugged between outside unit and inside fascia Check power supply to vehicle Ensure mode has been switched to heat (ch
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ATWOOD AIR CONDITIONER LIMITED WARRANTY Atwood Mobile Products warrants to the original owner and subject to the below mentioned conditions, that this product will be free of defects in material or workmanship for a period of two years from the original date of purchase. Atwood’s liability hereunder is limited to the replacement of the product, repair of the product, or replacement of the product with a reconditioned product at the discretion of the manufacturer.
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