Comfortaire RG-51-5 User manual

Room Air Conditioner
Important Information
• Please read carefully and thoroughly this manual before operating this unit.
• Contact a qualified sevice technician for installation, repair and maintenance of this unit.
• The appliance is not intended for use by young children or those who require supervision.
• Young children should be supervised to ensure that they do not play with the appliance.
HEAT CONTROLLER, INC.
MODELS:

2Room Air Conditioner
FOR YOUR RECORDS
Write the model and serial numbers here:
Model #
Serial #
You con find the numbers on a label on the side of the
product.
Dealer's Name
Date Purchased
Staple your receipt to this page in the event you need it
to prove date of purchase or for warranty issues.
READ THIS MANUAL
Inside you will find many helpful hints on how to use and
maintain your air conditioner properly. Just a little preventive
care on your part can save you a great deal of time and
money over the life of your air conditioner.
You'll find many answers to common problems in the chart
of troubleshooting tips. If you review our chart of
Troubleshooting Tips first, you may not need to call for
service at all.
PRECAUTION
Contact an Authorized Service Center for repair or
maintenance of this unit. Call 1-877-755-7932 to
locate the nearest ASC.
The air conditioner is not intended for use by young
children or invalids without supervision.
Young children should be supervised to ensure that
they do not play with the air conditioner.
If the power cord requires replacement, have an
Authorized Servicer install an exact replacement part.
Installation work must be performed in accordance
with the National Electric Code by qualified and
authorized personnel only.
Safety Precautions..........................3
Before Operation ........................7
Introduction ....................................8
Symbols Used in this Manual ........8
Features ........................................8
Electrical Safety ..............................9
Temporary Use of an
Adapter ........................................11
Temporary Use of an
Extension Cord ............................11
Installation ....................................12
Window Requirements ................12
Size ...........................................12
Clearance .................................13
Preparation of Chassis ...............14
Unit Installation ............................15
Operating Instructions .................16
Location and function
of Controls....................................16
Additional Features.......................17
Air Direction ..............................17
Drain Pipe..................................17
Removal from Window...............17
Maintenance and Service ............18
Air Filter ....................................18
Cleaning the Air Conditioner .....18
How to Remove the
Front Grille ................................18
Common Problems and
Solutions.......................................19
Troubleshooting ............................20
Window-Type Air Conditioner Owner's Manual
TABLE OF CONTENTS
Location ....................................
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13

Owner’s Manual 3
ENGLISH
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions
must be followed.
■Incorrect operation due to ignoring instructionswill cause harm or damage.The seriousness
is classified by the following indications.
■Because of the weight of the product, it is recommended that you have a helper to assist in
the installation.
■Meanings of symbols used in this manual are as shown below.
WARNING
CAUTION
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to propertyonly.
WARNING
■Installation
Always install the expansion panel(s).
•Improper assembly or installation may cause
incorrect operation, including injury, fire, and
Do not place the power cord near a heater.
•It may cause fire and electric shock.
Do not use the power cord near flammable
gas or combustibles such as gasoline,
benzene, thinner, etc.
•It may cause explosion or fire.
Do not disassemble or modify products.
•It may cause failure and electric shock.
Be sure not to do.
Be sure to follow the instruction.
Safety Precautions
poor performance, electric shock hazards.

4Room Air Conditioner
Safety Precautions
Operation
Plug in the power plug
properly.
Otherwise, it will cause
electric shock or fire.
Do not operate or stop the
unit by inserting or pulling
out the power plug.
It will cause electric shock or
fire.
Do not damage or use an
unspecified power cord.
It will cause electric shock or
fire.
Do not modify power cord
length.
It will cause electric shock or
fire.
Use the air conditioner on a
single outlet circuit. (See page 7.)
Do not share the outlet with
other appliances.
It will cause electric shock or
fire.
Always plug into a
grounded outlet.
No grounding may cause
electric shock.
Unplug the unit if strange
sounds, odors, or smoke
come from it.
Otherwise it will cause fire
and electric shock accident.
Do not use the socket if it is
loose or damaged.
It may cause fire and electric
shock.
Do not operate with wet
hands or in damp
environment.
It may cause electric shock.
ON
• • •
• • •
• • •

Owner’s Manual 5
ENGLISH
CAUTION
■Installation
Safety Precautions
Never touch the metal parts
of the unit when removing
the filter.
•They are sharp and may
cause injury.
Do not block the inlet or
outlet.
•It may cause failure of
appliance or performance
deteriorate.
Ensure that the outer case
is not damaged by age or
wear.
•If the outer case is damaged,
it must be repaired or
replaced immediately.
Leaving it damaged could
result in the air conditioner
falling out of the window,
creating a safety hazard.
Close all doors, windows and other outside
openings to the room.
•The air conditioner must be operated in a
enclosed area to be most effective.
Do not operate the air conditioner if you
smell gas.
•It may cause explosion or fire.
If water enters the product, turn off the the
power switch of the main body of appliance.
Contact service center after taking the power-
plug out from the socket.
•It will cause electric shock or failure of
machine.
Do not clean the air conditioner with water.
•Water may enter the unit and degrade the
insulation. It may cause an electric shock.

6Room Air Conditioner
Safety Precautions
Since the fan rotates at high
speed during operation, it may
cause injury.
Do not put a pet or house
plant where it will be
exposed to direct air flow.
This could injure the pet or
plant.
Do not use this appliance for
special purposes suchas
cooling pets, foods, precision
machinery, or objects of art.
It is an air conditioner, not a
precision refrigeration system.
Always insert the filter
securely.
Clean it every two weeks.
Operation without filters will
cause failure.
Use a soft cloth to clean. Do
not use wax, thinner, or a
strong detergent.
The appearance of the air
conditioner may deteriorate,
change color, or develop
surface flaws.
Unplug the air conditioner
before cleaning it.
Be cautious not to touch the
sharp edges when
installing.
It may cause injury. It may cause electric shock
and damage.
Operation
Unplug the air conditioner
if it will not be used for a
long period.
Sharp
edges
•It will waste power
and may cause accident.
Do not drink water drained
from air conditioner. Do not
direct airflow at room
occupants only.
•It is not sanitary and could
cause illness or personal
injury.
(not the cable)
Hold the plug by the hand
when taking it out.

Owner s Manual 7
ENGLISH
Before Operation
1. Plug in the power plug properly.
2. Use a dedicated circuit. Overloading the line could create a fire hazard.
3. Do not use an extension cord. See page 11for more details.
4. Do not start/stop operation by plugging/unplugging the power cord.
5. If the power cord is damaged and requires replacement, have an Authorized
Servicer install an exact replacement part.
1. Being exposed to direct airflow for an extended period of time could be
hazardous to your health. Do not expose occupants, pets, or plants to direct
airflow for extended periods of time.
2. Due to the possibility of oxygen deficiency, ventilate the room when used
together with stoves or other heating devices.
3. Do not use this air conditioner for non-specified special purposes (e.g.
preserving precision devices, food, pets, plants, and art objects). Such usage
could damage the items.
4. The air conditioner is a consumer comfort appliance, not a precision climate
control system.
1. Do not touch the metal parts of the unit when removing the filter. Injuries can
occur when handling sharp metal edges.
2. Do not use water to clean inside the air conditioner. Exposure to water can
destroy the insulation, leading to possible electric shock.
3. When cleaning the unit, first make sure that the power and breaker are turned
off. The fan rotates at a very high speed during operation. There is a
possibility of injury if the unit's power is accidentally triggered on while
cleaning inner parts of the unit.
For repair and maintenance, contact an Authorized Service Center. See the
warranty page for details or call 1-877-755-7932.Have your model number and
serial number available. They should be written on page 2 of this manual.
Before Operation
Preparing for operation
Usage
Cleaning and maintenance
Service
,

8Room Air Conditioner
Introduction
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to the
air conditioner.
This symbol indicates special notes.
NOTICE
WARNING: This appliance should be installed in accordance with the
National Electric Code.
Introduction
Symbols Used in this Manual
Features
CABINET
HORIZONTAL
AIR DEFLECTOR
COOL AIR DISCHARGE
FRONT GRILLE
AIR FILTER
KNOBS
ROCKER SWITCHES

Electrical Safety
9
ENGLISH
Electrical Safety
Electrical Data
115V~ 230V~
Power cord may include a current
interrupter device. A test and reset button is
provided on the plug case. The device
should be tested on a periodic basis by first
pressing the TEST button and then the
RESET button. If the TEST button does not
trip or if the RESET button will not stay
engaged, discontinue use of the air
conditioner and contact a qualified service
technician.
Use Wall Receptacle Power Supply
Standard 125V, 3-wire grounding
receptacle rated 15A, 125V AC
Standard 250V, 3-wire grounding
receptacle rated 15A, 250V AC
Use 15 AMP. time
delay fuse or 15 AMP.
circuit breaker.
Use 20 AMP. time
delay fuse or 20 AMP.
circuit breaker.
Standard 250V, 3-wire grounding
receptacle rated 20A, 250V AC
Use of extension cords
Because of potential safety hazards, we
strongly discourage the use of an extension
cord. However, if you wish to use an
extension cord, use a CSA certified/UL-listed
3-wire (grounding) extension cord, rated 15A,
125V.
All wiring should be made in accordance with
local electrical codes and regulations.
Aluminum house wiring may pose special
problems. Consult a qualified electrician.
NOTICE
ELECTRICAL SAFETY
IMPORTANT GROUNDING INSTRUCTIONS
Air conditioner has a three-prong grounding plug on
its power supply cord, which must be plugged into
properly grounded three-prong wall receptacle for
your protection against possible shock hazard.
230, 208, and 230/208 VOLT UNITS
These units are equipped with a three-prong
grounding plug on the power supply cord, which
must be plugged into a matching properly grounded
three-prong wall receptacle for your protection
against possible shock hazard. If such an outlet is
not present, one must be installed by a qualified
electrician in accordance with the National Electrical
Code and local codes and ordinances.
DO NOT USE AN EXTENSION CORD on 230,
208, and 230/208 Volt units.
NOTICE
,

WARNING: This appliance must be properly grounded.
The power cord of this appliance is equipped with a three-prong grounding plug.
To minimize the risk of electric shock, use the plug with a standard three-slot
grounding wall power outlet. If the power outlet does not include a grounding slot,
have a qualified electrician replace the outlet before you use the room air
conditioner.
WARNING: Changing the outlet without making the appropriate wiring
changes will create an unsafe condition that could result in fire or
electrical shock. Refer all such work to a licensed and qualified
electrician.
WARNING: Do not cut or remove the grounding prong from the power
plug.
WARNING: Attaching the adapter ground terminal to the wall
receptacle cover screw does not ground the appliance unless the
cover screw is metal and not insulated, and the wall receptacle is
grounded through the house wiring.
WARNING: If you have any doubt whether the air conditioner is
properly grounded, have the wall receptacle and circuit checked by a
qualified electrician.
Preferred method
Ensure proper ground
exists before use
10 Room Air Conditioner
Electrical Safety

We strongly discourage the use of an adapter due to potential safety hazards.
For temporary connections, use only a UL-listed adapter, available from most
local hardware stores. Ensure that the large slot in the adapter is aligned with
the large slot in the receptacle for a proper polarity connection.
To disconnect the power cord from the adapter, use one hand on each to avoid
damaging the ground terminal. Avoid frequently unplugging the power cord as
this can lead to eventual ground terminal damage.
WARNING: Never use the appliance with a broken adapter.
We strongly discourage the use of an extension cord due to potential safety
hazards. For temporary situations, use only CSA certified and UL listed 3-wire
grounded extension cords, rated 15 A, 125 V.
Temporary method
Adapter Plug
Receptacle Cover
Metal Screw
Temporary Use of an Adapter
Temporary Use of an Extension Cord
Owner s Manual 11
,
Electrical Safety
ENGLISH

Size
This room air conditioner is
designed for installation in standard
double-hung windows with actual
opening widths from 21" to 35".
The upper and lower window sash
must open sufficiently to allow a
clear vertical opening of 12" from the
bottom of the upper sash to the
window sill.
WARNING: This product is a WINDOW AIR CONDITIONER.
As such, a standard single-hung or double-hung window is required
for proper installation. Non-window installations, including using
sleeves, holes in walls, and other installations are not recommended.
Have the following tools available for installation:
* Screwdriver (Slotted and Phillips) * Ruler
* Knife * Hammer
* Pencil * Level
12" min
21" to 35"
Installation
Window Requirements
Type B: 2EA
(Wood Screw)
Type C: 2EA
(Drain Joint Pipe)
Type A: 14EA
(Short Screw)
Type D: 3 EA
(
L Bracket)
Type F: 1 EA
(Sash Seal)
(Not adhesive backed)
Type E: 1 EA
(Seal Strip)
(Adhesive backed)
Type G: 2 EA
(Guide Panel)
Type H: 1 EA
(Upper Guide)
10mm
16mm
Room Air Conditioner
Installation
12
16mm

Installation
Location
Install the air conditioner where the
sunlight does not shine directly on the
unit.
Clearance
Proper clearance enhances the cooling efficiency of the unit and prevents heat
radiation of the condenser.
* The bottom of the cabinet should be 30" to 60" above the ground.
*The outside of the cabinet must tilt downward at least 1/2".
* There should be no obstacles such as a fence or wall within 20" from the back
of the cabinet.
* All side louvers of the cabinet must remain exposed to the outside of the
structure.
Interior Wall
Sill
12" min
21" to 35"
1/2" to 11/4"
Offset
Sill
Exterior
175/16" min
(Without Frame Curtain)
About
1/2"
30"~60"
Awning
Cooled Air
Fence
Over 20"
Heat
Radiation
Owner s Manual 13
ENGLISH
,

Preparation of Chassis
1. Insert the guide panels(Type G)
into the guides of the air conditioner
(Type H),Fasten the curtains to the
unit with screws (Type A).
:Use a long screwdriver and
installing the screws will be easier.
2. Cut the adhesive-backed seal strip
(Type E) to the window width.
Remove the backing from the seal
strip and attach the seal strip to the
underside of the bottom window.
3. Locating unit in window
Open the window and mark center line
on the center of the inner sill.
4. Attach L bracket
4-1. Install the L brackets behind the
inner window sill, with short side of
bracket as shown. Use the 2 screws
(Type A) provided.
4-2. The bracket helps to hold unit
securely in place. Be sure to place
bracket edge flush against back of
inner sill.
TIP!
Seal Strip
(Type E)
Room Side
Center Line
Inner Sill
Outside
Inside
L Bracket
Outer Sill
Inner Sill
Type A
7.5"
7.5"
Center Line
Type A
Type A
Type A
14 Room Air Conditioner
Installation

Installation
Unit Installation
Caution: During the following step, hold unit firmly until window sash
is lowered to top channel behind side panel frames. Personal injury or
property damage may result if unit falls from window.
1. Install the air conditioner in the window
1-1. Carefully lift the air conditioner and
slide it into the open window. Make
sure the bottom guide of the air
conditioner drops into the notches of
the Lbracket.
:When the air conditioner drops
into the Lbracket, the air conditioner
will be centered in window opening.
1-2. While steadying the air conditioner,
carefully bring the window sash
down behind the upper guide of the
air conditioner.
When the air conditioner is properly
installed, it should tilt slightly down at
the back. If it is set correctly in the
window, it will hang lower in the back
automatically. If it does not, there is a
problem with the installation.
2. Secure the guide panels
Extend the guide panels (Type G) to
fill the window opening using 2 screws (Type B),
2 screws (Type C) to secure them.
3. Install the sash seal and sash lock
3-1. Cut the sash seal (Type F) to the
window width. Stuff the sash seal
between the glass and the window
to prevent air and insects from
getting into the room.
3-2. Fasten the Lbracket using a screw
(Type A).
3-3. Remove the screws that secure the
cabinet and base pan in the right
side.
NOTICE
4. Window installation of room air conditioner is now completed.
See ELECTRICAL DATE for attaching power cord to electrical outlet.
CENTER LINE
SEAL
WINDOW FRAME
BOTTOM
GUIDE
ABOUT 1/2"
L BRACKET
UPPER GUIDE
Owner s Manual 15
,
ENGLISH
TYPE C
SASH SEAL
(TYPE F)
LBRACKET
TYPE A
TYPE B
TYPE C
SASH SEAL
LBRACKET
TYPE A
TYPE B

16Room Air Conditioner
CAUTION: If you turn off the air conditioner or switch from cooling to
the fan, wait at least 3 minutes before setting to cooling again.
Operating Instructions
Operating Instructions
Location and Function of Controls
POWER
FAN SPEED "Low"
FAN SPEED "High"
-Turns air conditioner off.
Low speed fan operation with cooling or not.
Hi speed fan operation with cooling or not.
Normal Fan
1. Turn the FAN speed mode switch to the "High" or the "Low" setting
2. Set the thermostat control to the temperature mark "Fan Only"
Normal cooling
1. Turn the FAN speed mode switch to the "High" or the "Low" setting
2. Set the thermostat control to the desire temperature (the mid-point is a good
starting position).
If the room temperature is not satisfactory after a reasonable time, adjust the
control to a warmer setting, as appropriate.
Maximum cooling
1. Turn the FAN speed mode switch to the "High" setting
2. Set the thermostat control to the cooler temperature mark.
Quieter operation
1. Turn the FAN speed mode switch to the "Low" setting
2. Set the thermostat control as needed.
This automatically controls the temperature of indoor air. Turn the knob so that
arrow points to the cooler marks for more moderate cooling.

Owner s Manual 17
ENGLISH
Air Direction
Adjusting the air direction using the
horizontal air deflector control.
Using the control tabs, the air flow can
be directed to the left, right, straight
ahead, or any combination of these
directions.
Drain Pipe
In humid weather, excess water may
cause the Base Pan to overflow. To
drain the water, remove the Drain Cap
and secure the Drain Pipe to the rear
hole of the Base Pan.
Press the drain pipe into the hole by
pushing down and away from the fins
to avoid injury.
This air conditioner is equipped with a
slinger fan. (See drawing, below.)
The fan has an outer ring that runs in
the water that collects in the base pan
if it gets deep. That condensate is then
picked up by the fan and expelled
through the condenser, making the air
conditioner more efficient.
CAUTION: Be careful when inserting the drain pipe. Push away from
the sharp fin area to avoid slipping injuring yourself.
Removal From Window
Turn the air conditioner off, disconnect the power cord, remove the L bracket, the
screws and Support Bracket installed through the top and bottom of the guide
panels, and save for reinstallation later. Close the guide panels. Keeping a firm grip
on the air conditioner, raise the sash, and carefully tilt the air conditioner backward,
draining any condensate. Lift the air conditioner from the window and remove the
sash seal from between the windows.
Be sure to drain ALL condensate from the air conditioner. If you don't, it could run
out while you carry the unit making a mess and creating a slipping hazard. This
simple step will save you much cleaning and make a safer work environment.
Operating Instructions
Additional Features
DRAIN PIPE DRAIN CAP
Hang Push
,
Ring

18 Room Air Conditioner
Air Filter
Check the air filter at least twice a month to see if cleaning is necessary. Trapped
particles in the filter can build up and block the airflow, reducing cooling capacity
and causing an accumulation of frost on the evaporator. To clean the air filter:
1. Remove the air filter from the front grille by lifting the air filter up.
2. Wash the filter using lukewarm water below 40 C (104 F).
3. Gently shake the excess water from the filter and replace.
Cleaning The Air Conditioner
The front grille and Inlet grille may be
wiped with a cloth dampened in a mild
detergent solution.
The cabinet may be washed with mild
soap or detergent and lukewarm
water, then polished with Liquid Wax
for Appliances.
To ensure continued peak efficiency,
the condenser coils (outside of unit)
should be checked periodically and
cleaned if clogged with soot or dirt
from the atmosphere.
Maintenance and Service
Maintenance and Service
• HOW TO REMOVE THE FRONT GRILLE
1. Remove the screws securing the Front Grille.
2. Push the grille up from the bottom and pull
the top of the grille away from the case as
the top tabs lift out of their slots.

Maintenance and Service
Before calling for service, please review the following list of common
problems and solutions.
The air conditioner is operating normally when:
You hear a pinging noise. This is caused by water being picked up by the fan on
rainy days or in highly humid conditions. This feature is designed to help remove
moisture in the air and improve cooling efficiency.
See the section on Slinger Fan, page 17.
You hear the thermostat click. This is caused by the compressor cycle starting
and stopping.
You see water dripping from the rear of the unit. Water may be collected in the
base pan in highly humid conditions or on rainy days. This water overflows and
drips from the rear of the unit.
You hear the fan running while the compressor is silent. This is a normal
operational feature.
Common Problems and Solutions
Before Calling for Service
If you have problems with your air conditioner, read the following information and
try to solve the problem. If you cannot find a solution, turn off the air conditioner
and contact your dealer.
Air conditioner does not operate
1. Ensure that the air conditioner is plugged into a proper outlet.
2. Check the fuse or circuit breaker.
3. Check whether the voltage is unusually high or low.
Air does not feel cold enough on the cooling setting
1. Ensure that the temperature settings are correct.
2. Check to see if the air filter is clogged with dust. If so, clean the filter.
3. Ensure that the air flow from the outside is not obstructed and that there is a
clearance of over 20" between the back of the air conditioner and the wall or
fence behind it.
4. Close all doors and windows and check for any source of heat in the room.
Owner s Manual 19
,
ENGLISH

Maintenance and Service
The air conditioner may be operating abnormally when:
Problem
The air conditioner is
unplugged.
The fuse is blown/circuit
breaker is tripped.
Power failure.
Airflow is restricted.
The thermostat may not
be set high enough.
The air filter is dirty.
The room may have been
hot.
Cold air is escaping.
Cooling coils have iced up.
Ice blocks the air flow and
stops the air conditioner
from cooling the room.
Air
conditioner
does not
start
Air
conditioner
does not
cool as it
should
Air
conditioner
freezing up
Make sure the air conditioner plug is
pushed completely into the outlet.
Check the house fuse/circuit
breaker box and replace the fuse
or reset the breaker.
If power failure occurs, turn the
mode control to Off.
When power is restored, wait 3
minutes to restart the air
conditioner to prevent tripping of
the compressor overload.
Make sure there are no curtains,
blinds, or furniture blocking the
front of the air conditioner.
Turn the knob to a higher number.
The highest setting provides
maximum cooling.
Clean the filter at least every 2
weeks.
See the care and Maintenance
section.
When the air conditioner is first
turned on, you need to allow time
for the room to cool down.
Check for open furnace floor
registers and cold air returns.
See Air Conditioner Freezing Up
below.
Set the mode control at High Fan
or High Cool with thermostat at 1
or 2.
What To DoPossible Causes
Troubleshooting
20 Room Air Conditioner