OWNER’S MANUAL
STELLAR
AIR CONDITIONING UNIT
SPLIT-SYSTEM COOLING WITH
ENVIRONMENTALLY FRIENDLY R-410A
CONTENTS
CONGRATULATIONS. . . . . . . . . . . . . . .
Y2K COMPLIANCE. . . . . . . . . . . . . . . .
THERMOSTATS . . . . . . . . . . . . . . . . . . .
COOLING AND HEATING . . . . . . . . . .
FAN OPERATION . . . . . . . . . . . . . . . . .
START-UP. . . . . . . . . . . . . . . . . . . . . . . .
POWER FAILURE. . . . . . . . . . . . . . . . .
SYSTEM OPERATION . . . . . . . . . . . . . .
2
2
2
2
2
3
3
3
MANUAL CHANGE-OVER
THERMOSTAT . . . . . . . . . . . . . . . . . . .
3
3
3
4
4
4
4
4
4
4
4
ELECTRONIC THERMOSTAT . . . . . . .
CARE OF SYSTEM . . . . . . . . . . . . . . . . .
COIL CARE . . . . . . . . . . . . . . . . . . . . . .
CARE OF FAN MOTORS . . . . . . . . . . .
SERVICE CALLS . . . . . . . . . . . . . . . . .
FILTER CARE . . . . . . . . . . . . . . . . . . . .
CLEARANCES . . . . . . . . . . . . . . . . . . .
PARTS INFORMATION. . . . . . . . . . . . .
COMFORT ASSURANCE . . . . . . . . . . .
EFFICIENCY DO’S & DON’TS . . . . . . . .
MODELS: 12 SEER
H*AH024 - 60
035-17414-000 REV A (1200)
035-17414-000 REV A (1200)
550.38-O1Y
ELECTRONIC THERMOSTAT
can cycle the fan during unoccupied
mode or during the night while you
sleep to further conserve energy.
NOTE: if your cooling and heating tem-
perature adjustments are separate, be
sure to set both.
The computerized electronic thermo-
stat, when programmed, will function
automatically to operate the system as
follows: When the indoor temperature
rises above the higher (COOL) setting,
the outdoor unit will operate and the
indoor fan will circulate the cooled, fil-
tered air. When the room temperature is
lowered to the selected level, the sys-
tem will shut off. The indoor fan will
either shut off or run continuously,
depending upon your choice of fan
switch setting. When the indoor temper-
ature is lowered to the selected level,
the system will shut off. The indoor fan
will either shut off or run continuously,
depending upon your choice of fan
switch setting. When the indoor temper-
ature drops below the lower (HEAT) set-
ting, the heating system will operate,
and the indoor fan will circulate the
heated, filtered air. When the indoor
temperature rises to the selected set-
ting, the system will shut off.
2. After considering “Fan Operation
Selection” above, select and set the fan
operation mode you desire.
ON
CONTINUOUS FAN OPERATION: With
the thermostat fan switch set to “ON”,
the indoor fan will not shut off. However,
the cooling and heating systems will still
operate as required by room tempera-
tures. This provides continuous air filter-
ing and more even temperature
distribution to all conditioned spaces.
3. Move the comfort control switch to
the desired mode of operation (Cooling
or Heating) found on your particular
thermostat.
POWER FAILURE
When accidents, wind storms, etc. dis-
rupt electrical power supply to your
house, switch thermostat to “OFF” posi-
tion. CAUTION: if the power was off
more than 8 hours DO NOT switch to
“COOLING” or “AUTO” until electrical
power has been re-established for 8
hours.
FAN ONLY OPERATION: On moderate
days, usually during spring and fall,
when neither heating nor cooling is
required, you may want to run only the
fan to ventilate, circulate and filter the
air in your home or building. Set the
comfort control switch to “OFF” and the
fan switch to “ON”. Be sure to return the
switches to their original positions for
normal operation.
SYSTEM OPERATION
MANUAL CHANGE-OVER
THERMOSTAT
START-UP
CARE OF SYSTEM
COOLING YOUR HOME - With the
comfort control switch in the “COOL”
position, the system will operate as fol-
lows: When the indoor temperature
rises above the level indicated by the
temperature adjustment setting, the
system will start. The outdoor unit will
operate and the indoor fan will circulate
the cooled, filtered air. When the room
temperature is lowered to the setting
selected, the system will shut off. HEAT-
ING YOUR HOME - If your system
includes a heating unit and the comfort
control switch is in the “HEAT” position,
the system will operate as follows:
When the indoor temperature drops
below the level indicated by the temper-
ature adjustment setting, the system will
start. The heating system will operate
and the indoor fan will circulate the fil-
tered air. When the room temperature
rises to the setting selected, the system
will shut off. Whether heating or cooling,
the fan will continue to operate if the fan
switch was set in the “ON or Intelligent”
position. The “AUTO” setting on the fan
switch will allow the fan to shut off when
your system does.
YORK strongly recommends regular
periodic preventative maintenance on
this equipment. The person most
familiar with the equipment in your
H.V.A.C. system is a YORK dealer.
The YORK dealer can ensure your
maintenance program meets the con-
ditions of the “YORK Warranty”, maxi-
mize the efficiency of the equipment,
and service your unit within the feder-
ally mandated guidelines with regard
to unlawful discharge of refrigerants
into the atmosphere.
Do not operate this unit
when outdoor temperatures
are below 60°F as this will
cause damage to the unit.
The comfort control switch is assumed
to be in the “OFF” position. If the main
power supply to the outdoor and indoor
units is off, turn the appropriate discon-
nects to the “ON” position. Place the
system into operation as follows:
COIL CARE
1. Set temperature adjustment to the
desired temperature on your thermo-
stat.
Keep the outdoor unit free of foliage,
grass clippings, leaves, paper, and any
other material which could restrict the
proper air flow in an out of the unit. The
coil may be vacuumed to remove any
debris from between the fins. If the coil
becomes excessively dirty, turn the
main disconnect switch to “Off” and
wash the coil with your garden hose.
Avoid getting water into the fan motor
and control box. Flush dirt from base
pan after cleaning the coil.
COOLING - The higher the setting, the
lower the amount of energy consumed.
The National Bureau of Standards rec-
commends a setting of 78 °F.
HEATING - The lower the setting, the
lower the amount of energy consumed.
Federal guidelines recommend a set-
ting of 65 °F or lower.
Unitary Products Group
3
035-17414-000 REV A (1200)
550.38-O1Y
CARE OF FAN MOTORS
FILTER CARE
requires more energy, which means
greater cost to you.
Some fan motors are provided with
lubrication ports. Inspect your indoor
and outdoor units to determine whether
or not lubrication ports are provided.
The fan motor is shipped with an oil sup-
ply which will last for several years
under normal operating conditions.
After this time, each motor bearing
should be oiled with 10 - 15 drops
(approximately 1/4 teaspoon) of SAE 20
non-detergent electric motor oil or auto-
mobile oil. DO NOT use definite pur-
pose oils such as sewing machine,
cleaning, rust preventative, cutting,
household, etc.
Inspect the air filter(s) at least once a
month. If they are dirty, wash reusable
filters with a mild detergent per manu-
facturer’s recommendations. Replace
disposable filters with new filters. Install
the clean filters with “air flow” arrow in
the same direction as the air flow in your
duct. Filters should be clean to assure
maximum efficiency and ade-quate air
circulation.
DON’T heat or cool when you are away.
If you are going to be away for a day or
more, re-adjust your thermostat accord-
ingly. Your furniture is far less demand-
ing than you are when it comes to
comfort levels. However, don’t expect
the system to restore comfort conditions
immediately upon returning home. It will
take a little time.
CLEARANCES
DON’T locate lamps or other heat-pro-
ducing appliances (radios, TV’s, heat-
ers, etc.) near your thermostat. The
heat from these items will give your
thermostat “false information” about the
tem-perature in the room.
The minimum clearances shown below
must be maintained should any patio or
yard improvements be done around the
outdoor unit.
SERVICE CALLS
There are a few instances where the
user can avoid unnecessary service
calls. If unit stops functioning properly
check the following items before calling
your YORK servicing dealer:
TOP 48"
SIDES 12"
DO select a comfortable thermostat set-
ting, but keep in mind that moderation in
temperature selection will save energy.
REAR 12"
FRONT * 24"
* Service Access Panel
DO turn on your kitchen exhaust fan
when cooking and your bathroom ex-
haust fan when showering. Also, make
sure your clothes dryer is properly
vented. If these items are neglected, an
excess heat and humidity condition may
be created, causing your air condition-
ing system to run longer.
PARTS INFORMATION
1. Indoor section for dirty filter.
Replacement parts are available from
local YORK contractor/dealer or the
nearest YORK distribution center.
COMFORT ASSURANCE
Special warranty packages (called
Comfort Assurance) are available thru
your contractor. These packages
reduce the potential cost of service calls
following the first year of operation on
your cooling (or heating/cooling) sys-
tem.
DO set your thermostat a few degrees
lower than normal several hours before
entertaining a large group of people in a
relatively small area. People give off a
considerable amount of heat and mois-
ture in a closed area.
DO keep drapes and venetian blinds
closed when practical. These items pro-
vide insulation against heat loss/gain.
SOME EFFICIENCY
DO’S & DON’TS
2. Outdoor section for leaf or debris
blockage. Eliminate problem, turn off
the thermostat for 10 seconds and
attempt start. Wait 5 minutes. If system
does not start, call your YORK servicing
dealer.
DO contact a qualified service person to
make repairs or adjustments to your
system. He has been trained to perform
this service.
DON’T heat or cool unused household
area. Reduce supply and return air flow
to a minimum in areas which are not liv-
ing spaces (storage rooms, garages,
basements, etc).
DON’T be a “thermostat jiggler”. Moving
your thermostat setting will not make
your system heat or cool any faster.
Adjust your thermostat to a comfortable
setting and leave it there.
Your system contains environmen-
tally friendly refrigerant R410A,
which operates at very high pres-
sures. You may be in danger if you
try to make an attempt to repair
your unit. Please contact your local
York dealer.
DON’T restrict air circulation. Placing
furniture, rugs, etc. in such a way that
they interfere with air vents will make
you system work harder to achieve a
comfortable temperature level. This
Heating and Air Conditioning
Unitary Products Group
5005 York Drive, Norman, Oklahoma 73069
Subject to change without notice. Printed in U.S.A.
Supersedes: Nothing
035-17414-000 REV A (1200)
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