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DOMETIC CORPORATION
1120 North Main Street, Elkhart, IN 46514
Please Visit: WWW.DOMETIC.COM
•Installation •Operation •Maintenance
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.
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 Dometic for specialty advice.
Dometic will not be held responsible for
problems relating to incorrect or improper
installation methods.
dometic.com
GENERAL INFORMATION
I. PURPOSE
This Dometic AirCommand 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).
-The maximum thickness of the roof must not exceed
5 inches (125mm).
-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 Dometic unit is installed, Dometic 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.
1
LITERATURE N U M B E R 15000
Rooftop Air Conditioner
for Recreational Vehicles
Non-Ducted Models
AC-1351 & AC-1501
Revision A, 2/20/19
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Table of Contents
Related Manuals for Dometic AC-1351
Summary of Contents for Dometic AC-1351
-
Page 1: General Information
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). -
Page 2: Main Components
INSTALLATION PARTS LIST MAIN COMPONENTS 1) Dometic 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... - Page 3 - If the vehicle is over 23’ in length, or has an unusually high heat load (see General Operating Information section regarding expectations about insulation etc.), Dometic recommends 2 or more units to cool effectively. - When considering the installation position remember to check for clearance around the plenum inside the vehicle.
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Page 4: Connect Electrical Supply
Blue wire from rooftop unit to White wire from customer – AC Common Yellow/Green wire from rooftop unit to Green wire from customer - Ground Note: Dometic strongly recommends the use of the Molex connector described on the next page. -
Page 5: Installation Procedure
COC-1 Self Contained Power Connector Installation Instructions For 2 Wire Cable With Ground Applications The 2-circuit-with-ground connectors will splice non-metallic-sheathed cable in the following wire ranges and types: Self Contained Connector - FIG. 2 2 Circuit with ground for Solid Wire Order Optional Housing... - Page 7 Roof Thickness - Duct length Hold down bolt ASSESS ROOF THICKNESS Inch (mm) – required – Inch length required – Include ‘H’ (mm) Inch (mm) - Measure the roof thickness and consult the frame if used. table across to check if adjustments to the hold down bolt and duct length are required.
- Page 8 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.
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Page 9: Installation Is Now Complete
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... -
Page 10: Verifying Normal Operation
Replacement filters can be ordered directly from Dometic. II. Mounting Bolts Dometic suggests that the hold down bolts are initially checked for tightness within the first 3 months of installation, and thereafter every 12 months if the vehicle is in constant use. -
Page 11: General Specifications
The compressor will have a delayed start usually Thermostat control module. A “cool only” 3 minutes before unit starts to cool. model (AC-1351) will not have the furnace Note: Any interruption to the power supply will cause the unit to pushbutton on the display. - Page 12 OPERATING INSTRUCTIONS – Continued MODE - DRY - The DRY mode is used when the room temperature is close to comfortable but you wish to dehumidify. - Press MODE pushbutton to highlight DRY. - Set the temperature to desired set point. Note: the fan speed is locked in LOW. - The compressor will cycle on and off at approximate intervals of 6 minutes to extract moisture from the air.
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Page 13: Mode Button
OPERATING INSTRUCTIONS FOR ADJUSTING THE THERMOSTAT Infra red reception Temperature display SENSOR To receive wireless handset sign al area On/Off button ON/OFF Display timer setting, set or ro om Press once to start operation temperature in C or F Press again to stop operation AUTO COOL Room temperature... - Page 14 OPERATING INSTRUCTIONS FOR ADJUSTING THE THERMOSTAT (cont) 3. Mode setting MODE Press 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.
- Page 15 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.
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Page 16: Troubleshooting
TROUBLESHOOTING Control Pad will not illuminate when ON/OFF - Check circuit breaker is on button is pressed - Control cable may be unplugged between outside unit and inside fascia - Check power supply to vehicle Unit does not cool - Check circuit breaker is on - Control cable may be unplugged between outside unit and inside fascia - Check power supply to vehicle... - Page 17 LIMITED TWO-YEAR WARRANTY LIMITED TWO-YEAR WARRANTY AVAILABLE AT WWW. DOMETIC.COM/WARRANTY. IF YOU HAVE QUESTIONS, OR TO OBTAIN A COPY OF THE LIMITED WARRANTY FREE OF CHARGE, CONTACT: DOMETIC CORPORATION CUSTOMER SUPPORT CENTER 1120 NORTH MAIN STREET ELKHART, INDIANA, USA 46514...
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