Atwood AC-1351 User Manual

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
I. 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.

Atwood AC-1351 Specifications

General

Brand	Atwood
Model	AC-1351
Category	Air Conditioner
Language	English

Summary

General Information

Purpose of the Air Command Unit

Explains the Atwood Air Command air conditioning unit's design for RVs.

Ensuring Effective Operation

Details factors affecting AC effectiveness and heat load reduction methods.

Managing Condensation

Provides guidance on managing condensation within the unit in humid areas.

Installation Parts List

Main Components

Lists the primary components included in the air conditioner package.

Fittings and Fixtures

Lists all necessary hardware and small parts for installation.

Installation Position

Unit Installation (Non-Ducted)

Leveling Caution

Warns about unit leveling requirements and contact for deviations.

Assess Roof Strength

Details how to assess roof capacity and prepare mounting holes.

Electrical Hazard Warning

Alerts to electrical hazards during installation.

Lifting Safety Caution

Advises on safe lifting procedures for the unit.

Position Unit on Roof

Attach Adapter to Unit

Connect Electrical Supply

Self-Contained Power Connector Installation

2-Circuit Connector for Solid Wire

Details the specific connector type and parts for solid wire.

2-Circuit Connector for Stranded Wire

Details the specific connector type and parts for stranded wire.

2-Circuit Connector for Round Stranded Cable

Details the specific connector type and parts for round stranded cable.

Power Connector Installation Procedure

Step-by-step guide for installing the power connector correctly.

Assess Roof Thickness

Assemble Duct

Duct Attachment Caution

Attach Duct to Unit

Attach Plenum Cover

Connect Plenum and Control Cables

Connects plenum cover via suspension cord and control cables.

Connect Key Pad Control Cables

Guides connection of key pad control cables with matching colors.

Secure Plenum Cover and Filters

Secure Main Plenum Cover

Secures the main plenum cover to the duct assembly with screws.

Install Return Air Filters

Removes and replaces return air filters into the plenum.

Verifying Normal Operation

Maintenance Schedule

Plenum Filter Cleaning

Details routine cleaning of plenum filters for optimal performance.

Mounting Bolt Check

Recommends checking hold down bolt tightness periodically.

Storage Recommendations

Provides guidance on running the unit during vehicle storage.

General Specifications

Operating Instructions

Mode Selection (COOL, FAN, HEAT)

Instructions for operating the unit in Cool, Fan, and Heat modes.

Displaying Room Temperature

How to display the actual room temperature on the thermostat.

Operating Instructions Continued

Mode Selection (DRY, AUTO)

Instructions for operating the unit in Dry and Auto Cool/Heat modes.

Sleep Function

How to activate and deactivate the sleep mode for temperature adjustments.

Timer Function

Instructions for setting the unit's on/off timer.

Lock and Display Settings

How to lock controls and change temperature display units (C/F).

Adjusting the Thermostat

Thermostat Controls Overview

Identifies thermostat buttons and their functions.

Power On/Off and Temperature Setting

Instructions for turning the unit on/off and adjusting the set temperature.

Displaying Room Temperature

How to display room temperature and Fahrenheit conversion.

Thermostat Adjustment Continued

Mode Setting Options

Details how to change operation modes like Cool, Dry, Heat, Fan, Auto.

Furnace Setting (Model 1511)

Instructions for activating furnace as primary heating for specific models.

Fan Speed Settings

How to change fan speed and manage fan behavior during heating.

Sleep Setting Activation

How to activate or deactivate the sleep setting.

Thermostat Adjustment - Timer and Errors

On/Off Timer Setting

Instructions for setting the unit's on/off timer.

Error Code Display

Lists common fault codes and their meanings.

Troubleshooting Common Issues

Control Pad Not Illuminating

Checks for power and connection issues when the control pad is off.

Unit Not Cooling or Heating

Troubleshooting steps for units that fail to cool or heat.

Insufficient Cooling Capacity

Addresses issues related to reduced cooling performance.

Atwood Air Conditioner Limited Warranty