atwood Air Conditioners (non-ducted AC-1351, AC-1501) - Manual

AC IOM 3/01/2013 rev 1 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 03/01/2013
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
I. PURPOSE
This Atwood 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 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.