Table of Contents
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Room Air Conditioner and Heat Pump
Use and Care Manual
Contents
Introduction ................................................................. 1
Safety Information ....................................................... 1
Unpacking .................................................................... 2
Electrical Requirements .............................................. 2
Installation ................................................................... 3
Room Heat Pumps....................................................... 3
Normal Care and Maintenance ................................... 3
General Operating Instructions .................................. 4
Airflow Around Unit ..................................................... 4
Drain Cup Installation and Use ................................... 4
Switchover Thermostat Control ................................. 5
Operating Controls ...................................................... 5
Introduction ................................................................. 7
Air Conditioner Opening Requirements .................... 7
Placement of Outer Case in Opening ......................... 7
When Service Is Required........................................... 8
Warranty Information .................................................. 8
Questions? ................................................................... 8
Introduction
Room air conditioners cool, dehumidify, and filter air inside
your home. Heat pump and electric heat models offer both
heating and cooling. Opening sections of manual provide
general information for all room air conditioner models.
Operating Controls section describes operation of controls
for each model. After reading the opening sections, turn to
Operating Controls section and find the panel layout that
matches the model of your unit.
Read entire manual thoroughly before beginning installation
and operation of your new room air conditioner. Be sure you
have all necessary tools and materials on hand for the job.
Study illustrations to familiarize yourself with important
details of the installation process. Review manual for oper-
ating instructions.
NOTE
1. Mechanical experience is required to install this air
conditioner.
2. Installation can take from 1 to 3 hours, depending on
installer's knowledge and skill.
September 2000 (1)
®
Safety Information
Be sure electrical service is adequate for chosen model of
air conditioner. Complete electrical rating for unit is found on
serial plate located behind front grille. Electrical outlet must
be close enough to unit for power cord to reach without
strain. Air conditioner should be the only appliance on
individual circuit.
For personal safety and to avoid possible damage to appli-
ance or home, observe all safety instructions highlighted by
symbol shown below.
After installing unit, reread instructions to ensure each step
is complete and that all parts are fastened in place. For best
results and to minimize installation time, perform all proce-
dures in the order shown.
To prevent heat related illness or death, do not use
this device for unattended cooling of persons or
animals unable to react to product failure. Failure of
unattended air conditioner may result in extreme
heat in area intended for cooling, causing heat-
related illness or death of persons or animals.
RECOGNIZE THIS SYMBOL
AS A SAFETY PRECAUTION
!
WARNING
20070004
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Table of Contents
Related Manuals for COMFORT-AIRE RAH-123
Summarization of Contents
Electrical Requirements and Connection
Grounding Instructions
Ensures air conditioner is grounded using a three-prong plug into a matching grounding wall receptacle.
Electrical Connection
Details required circuits, voltage, and fuse/breaker ratings for unit plug types.
Receptacle Wiring
Specifies adequate wiring size and use of copper wire for proper receptacle installation.
Installation Procedures
Room Heat Pump Operation
Explains how heat pumps move heat for cooling and heating, including efficiency and switchover points.
Normal Care and Maintenance
Annual Inspection
Recommends annual unit inspection, outer case cleaning, and repainting of scratches/blisters.
Front Grille and Filter Removal
Details how to remove the front grille and air filter for cleaning and access.
Front Grille and Cabinet Cleaning
Provides instructions for cleaning the grille and cabinet using warm water and mild soap.
Air Filter Cleaning
Explains how to clean the air filter by vacuuming or washing and emphasizes drying before replacement.
General Operating Instructions
Initial Start-Up and Cooling
Guides setting fan speed and temperature for initial cooling operation and thermostat cycling.
Changing Airflow Direction
Explains how to adjust baffles and louvers to divert airflow left/right and up/down.
Airflow Around Unit
Warns against obstructing airflow to and from the unit to prevent compressor damage.
Drain Cup Installation and Use
Details installing and using the condensate drain cup to manage excess water in humid conditions.
Operating Controls
Fan Control
Describes fan settings: OFF, LOW COOL, HIGH COOL, LOW HEAT, HIGH HEAT, and FAN ONLY.
Temperature Control
Instructs to slide control left for warmer and right for cooler room temperature.
Vent Control
Explains EXHAUST and CLOSED settings for venting room air or circulating it.
Troubleshooting
Unit Will Not Run
Suggests checking power, plug seating, fuses, and circuit breakers.
Little or No Cooling
Addresses causes like open dampers, obstructed airflow, dirty filters, or undersized units.
Little or No Heating
Covers fan/compressor operation, temperature settings, and unit sizing.
Noisy Unit
Recommends tightening parts, adding support, or checking drain plug/cup for noise issues.
Mounting Support Not Installed
Advises checking storm window frames and providing additional support if needed.
Frost on Indoor Coil
Notes frost is normal in high humidity and suggests checking drain plug or adding drain cup.
Frost on Outdoor Coil
States frost is normal at low outdoor temperatures and suggests adjusting temperature control.
Odors in Cooling
Suggests using algaecide tablet, removing drain plug, and cleaning unit for mold/mildew odors.
Odors in Heating
Attributes heating odors to dust accumulation and notes dissipation with use.
Thru-wall Installation Instructions
Air Conditioner Opening Requirements
Specifies requirements for the chassis, outer case, and electrical outlet placement.
Dimensions of Finished Opening
Provides a table of dimensions for RAH models to determine finished opening requirements.
Placement of Outer Case in Opening
Details positioning the outer case, ensuring it is level, sloped, and projects correctly.
Installed Case Construction
Installation in Wall Thicker Than "D" Dimension
Explains how to chamfer openings to ensure airflow to side louvers in thicker walls.
Need help?
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