HEAT PUMP
A GUIDE TO OPERATING AND MAINTAINING YOUR
RESIDENTIAL HEAT PUMP UNIT
SAFETY CONSIDERATIONS
Recognize safety information. This is the safety-alert symbol
. When you see this symbol on the unit and in instructions
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or manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, and
CAUTION. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which
in severe personal injury or death. WARNING signifies hazards
could result in personal injury or death. CAUTION is
which
used to identify unsafe practices which
sonal injury or product and property damage. NOTE is used to
highlight suggestions that
ability, or operation.
ELECTRICAL SHOCK, FIRE, EXPLOSION, PERSONAL INJURY HAZARD
Improper installation, adjustment, alteration, service, maintenance, or use could result in personal
injury, death, and/or property damage.
Consult a qualified installer, service agency, or
your distributor or branch for information or assistance. The qualified installer or service agency
must use factory-authorized kits or accessories
when modifying this product.
ELECTRICAL SHOCK, UNIT OPERATION, AND
SAFETY HAZARD
Failure to follow this warning could result in personal injury, death, and/or property damage.
Read and follow all instructions and warnings, including labels shipped with or attached to unit before operating your new heat pump.
will result in enhanced installation, reli-
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WARNING
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WARNING
may result in minor per-
will result
IMPORTANT FACTS
To better protect your investment and to eliminate unnecessary
service calls, familiarize yourself with the following facts:
• Each unit has a rating plate affixed to it which provides necessary information for specific identification of a unit. You
should familiarize yourself with the product, model, and serial
numbers listed on each rating plate. Record them for future
reference on the last page of this booklet.
• Your heat pump system should never be operated without a
clean, properly installed air filter. Plan to inspect the filter periodically. A clogged air filter will increase operating costs and
shorten the life of the unit.
• Supply-air and return-air registers should not be blocked.
Drapes, furniture, and toys are some of the items commonly
found obstructing registers. Restricted airflow lessens the
unit’s efficiency and life span.
• The outdoor unit must have unrestricted airflow. Do not
cover the unit, lean anything against it, or stand on it. Do not
allow grass clippings, leaves, or other debris to accumulate
around or on top of the unit. Maintain a 12-in. minimum
clearance between the outdoor unit and tall grass, vines,
shrubs, etc.
• Your multipurpose indoor thermostat is the control center
for your heat pump system. You should familiarize yourself
with its proper operation. Attempting to control the system by
other means—for instance, switching the electrical supply
power ON and OFF—may cause damage to the unit.
• During heating, increasing the thermostat setting more than
2 degrees may cause the supplemental heaters to be turned on
to satisfy the thermostat. Needless use of the supplementary
heat reduces potential energy savings.
• You may find that you can maintain greater personal comfort by running the fan continuously. “Air pockets” can form
due to the structure of the house, placement of registers, etc.
These air pockets may be too cool or warm for your liking.
Continuous fan operation minimizes any temperature differences. Also, systems equipped with electronic or mechanical
air cleaners and/or humidifiers offer the added benefits of having the air continuously cleaned year-round and humidified
during the winter season.
• A system equipped with a heat or energy recovery ventilator
offers the advantage of exhausting stale air from the home and
allowing fresh air in from the outdoors while minimizing heat
loss.
• Your system may also be equipped with a zoning system
which allows individual control over the temperatures of separate areas of your home.
• Your heat pump will remove humidity from your home during the cooling season. After a few minutes of operation, you
should be able to see water trickle from the condensate drain
of the indoor cooling coil. Check this occasionally to be sure
the drain system is not clogged. Of course, don’t expect to see
much drainage if you live in a very dry environment.
NOTE TO INSTALLER: THIS MANUAL SHOULD BE LEFT WITH THE EQUIPMENT USER.
• During the heating cycle, air from your registers may seem
cooler than you might first expect. This is because your heat
pump delivers a constant flow of air at around 90°F to 105°F
instead of in sudden bursts of hot air as with a conventional
furnace. This air may feel cool because it is slightly less than
your skin temperature. However, it is sufficiently warm to
keep you comfortable.
• Ice or frost will tend to form on the outdoor coil during the winter heating operation. Your heat pump is designed to automatically melt the ice. When in this defrost cycle, it is normal for steam
or fog to rise from the outdoor unit. Do not be alarmed!
• Do not operate your unit in cooling mode when outdoor
temperatures are below 55°F unless your unit was modified
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for low-ambient operation.
• Do not operate your unit in heating mode when outdoor
temperatures are above 66°F unless you set your thermostat
to emergency heat mode.
OPERATING YOUR HEAT PUMP
The operation of your heat pump system is controlled by the
indoor thermostat. You simply adjust the thermostat and it
maintains the indoor temperature at the level you select. Most
thermostats for heat pump systems have three controls: a temperature control selector, a FAN control, and a SYSTEM or
MODE control.
The FAN control offers two options for controlling the indoor
blower: AUTO and ON. When set to AUTO, the blower runs only
when the heat pump is operating. When set to ON, the blower runs
continuously.
Typically, the SYSTEM or MODE control on your thermostat
offers the following selections: COOL, OFF, HEAT, AUTO,
and EMERGENCY HEAT. Some thermostats may have a separate switch for EMERGENCY HEAT. The heat pump will not
operate when the SYSTEM OR MODE control is set to OFF.
With the SYSTEM or MODE control set to COOL, your heat
pump will provide cooling when the indoor temperature rises
above the level you wish to maintain. With the SYSTEM or
MODE control set to HEAT, your heat pump will provide
warmth whenever the indoor temperature falls below the level
that you have selected.
The AUTO selection found on some thermostats provides for
automatic changeover between cooling and heating. With the
SYSTEM or MODE control set to AUTO, cooling operation is
activated when the indoor temperature rises above the thermostat cooling temperature setting, or heating operation is activated when the indoor temperature drops below the thermostat
heating setting.
Depending on your typical winter heating needs, your home
comfort system may include a supplementary heating source.
The EMERGENCY HEAT setting (EHEAT) provides for convenient selection between the two heating appliances. Your
heat pump will operate when the SYSTEM or MODE control
is set to HEAT. With the SYSTEM or MODE control set to
EHEAT, the heat pump will turn off and the supplementary
heat source will be activated.
In certain geographic areas and in certain applications, supplemental heat is not required. Any questions regarding your
application should be directed to your dealer.
COOLING MODE
When operating in cooling mode, your heat pump will run in
cooling mode until the indoor temperature is lowered to the
level you have selected. On extremely hot days, your heat
pump will run for longer periods at a time and have shorter
“off ” periods than on moderate days.
The following are typical conditions that add extra heat and/or
humidity to your home. Your heat pump will work longer to
keep your home comfortable under these conditions:
• Entrance doors are frequently opened and closed
• Laundry appliances are being operated
• A shower is running
• More than the usual number of people are present in the home
• More than the normal number of electric lights are in use
• Drapes are open on the sunny side of the home
HEATING MODE
With the SYSTEM or MODE control of your indoor thermostat set to HEAT, your heat pump will run in heating mode until
room temperature is raised to the level you have selected. Of
course, your heat pump will have to operate for longer periods
to maintain a comfortable environment on cooler days and
nights than on moderate ones.
SUPPLEMENTAL HEAT
Your heat pump is your primary heating source. Your system
may also be equipped with a supplemental heating source such
as electric, gas, or oil. On cold days and nights, your system
will automatically turn on the supplemental heat in order to
maintain the level of comfort you have selected.
DEFROST MODE
When your heat pump is providing heat to your home and the
outdoor temperature drops below 45°F, moisture may begin to
freeze on the surface of the outdoor coil. If allowed to build up,
this ice would impede airflow across the coil and reduce the
amount of heat absorbed from the outside air. So, to maintain
energy-efficient operation, your heat pump has an automatic
defrost mode.
The defrost mode starts at a preset time interval of 90 minutes,
although, it may be reset to either 30 or 60 minutes. Defrost
will start at the preset time only if the ice is sufficient to interfere with normal heating operation.
After the ice is melted from the outdoor coil, or after a maximum of 10 minutes in defrost mode, the unit automatically
switches back to normal heating operation.
Do not be alarmed if steam or fog appears at the outdoor unit
during defrost mode. Water vapor from the melting ice may
condense into a mist in the cold outside air.
During certain weather conditions such as heavy snow and
freezing rain it is not uncommon for ice to build up on the
outdoor unit grille. This is normal for these weather conditions.
Do not attempt to remove the ice from the outdoor unit grille.
This condition will not affect the proper function of the unit
and will clear within a few days.
EMERGENCY HEAT MODE
The emergency heat (EHEAT) setting on your Bryant electronic thermostat can be used to turn off your heat pump and use
only the supplemental heating source (if equipped). The Auxiliary Heat Indicator (AUX HT) will be displayed while your
system is operating in EHEAT mode.
Emergency heat is not normally used. There may be situations,
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however, where it is necessary, such as when your heat pump
requires servicing.
If the electricity to your heat pump has been off for more than
30 minutes, switch your thermostat to EHEAT mode before
restarting your heat pump. Leave the system in EHEAT mode
for an amount of time equal to the power outage. It is not necessary to exceed 12 hrs. If you cannot determine how long the
power has been off, leave the system in EHEAT mode for 8 hrs.
PERFORMING ROUTINE
MAINTENANCE
With the proper maintenance and care, your heat pump will
operate economically and dependably. Maintenance can be
accomplished easily by referring to the following directions.
However, before performing maintenance, consider these
important safety precautions:
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WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Disconnect all electrical power to the indoor air handler or furnace before removing access panels to perform any maintenance. Disconnect power to both the
indoor and outdoor units. Note: There may be more
than one electrical disconnect switch.
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WARNING
CUT HAZARD
Failure to follow this warning could result in personal
injury.
Although special care has been taken to minimize
sharp edges in the construction of your unit, be extremely careful when handling parts or reaching into
the unit.
CHECK THE AIR FILTER
A dirty air filter will cause excessive strain on the compressor
and blower motor. This can cause the components to overheat
and automatically shut down. In the worst case, the components will fail and need to be replaced. To avoid inefficient or
failed operation of your unit, CHECK THE FILTER(S)
EVERY 3 TO 4 WEEKS. Replace filter(s) when necessary, or
clean the filter(s) if you have the reusable type.
Disposable filters should be replaced by similar, new filters of
the same dimensions.
Reusable, permanent filters should be washed in a solution of
cold water and mild detergent, then rinsed and thoroughly
dried. THE FILTER MUST BE COMPLETELY DRY
BEFORE BEING REINSTALLED. To avoid prolonged shutdown of your unit while a filter is drying, you should have an
extra filter on hand. This allows you to rotate between the 2
with minimal downtime for your comfort system. Extra filters
may be purchased from your dealer.
There are no filters in the outdoor unit of a split system. If your
indoor unit is a gas or oil furnace, refer to your furnace User’s
Manual for filter location and procedures for replacement or
cleaning.
If your system includes an indoor fan coil unit, the filter may be
located in the unit where it connects with the return-air duct or
plenum. (See Fig. 1.) Remove the filter cover plate by sliding
latches toward center of plate. Lift filter to clear lower flange. Filter is spring-loaded and will “pop out.” Reinstall filter, being certain to secure filter behind lower flange. When reinstalling cover
plate, secure plate behind upper flange then slide tabs outward.
The indoor fan coil unit may be located in the attic. In this
instance the filter may be located behind the return air grille.
Access the filter by removing the return air grille.
If your system includes a high efficiency or electronic air
cleaner, refer to air cleaner User’s Manual for proper filter
cleaning or replacement.
INDOOR COIL
If the split-system coil has only been operated with a clean
filter in place, it should require minimal cleaning.
If coil cleaning is required, call your dealer for service. It may
be necessary to clean the coil with a detergent solution and
rinse it with water. This could require the removal of the coil.
You should not attempt this yourself.
OUTDOOR COIL
If grass clippings, leaves, shrubbery, and debris are kept away
from the outdoor unit, minimal care should be sufficient to
keep the system functioning properly. For proper drainage,
debris must be removed periodically from the base pan. However, if the outdoor coil becomes dirty, use a vacuum cleaner
or shop vac with soft brush attachment to clean the exterior
surface. Vacuum coil surface using an up and down motion. Be
careful not to bend or damage fins.
If dirt is deep in the coil, contact your dealer for service. The
outdoor fan motor may have to be disconnected and the top
panel removed to gain access to the coil for thorough cleaning.
Do not attempt this yourself.
OUTDOOR COIL—SEA COAST
If your unit is located near the ocean, special maintenance is
required. Ocean mist/breeze carries salt, which is corrosive to
most metals. Although your new unit is made out of galvanized
metal and is protected by top-grade paint, you should take the
precaution of additional maintenance which consists of periodically washing the unit. By washing all exposed surfaces and
coil, you will be adding additional life to your unit. Please
Fig. 1—Removing Filter from Fan Coil Unit
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consult your installing contractor for proper intervals/procedures for your geographic area or service contact.
UNIT SUPPORT
Your split-system outdoor unit should be maintained at a level
position. If its support should shift or settle so that the unit is
no longer level, you should correct the condition. Relevel it
promptly to assure water drains out of the unit. If you notice
that water or ice collects beneath the unit, arrange for it to be
drained away from the unit.
Heat pumps installed in snowbelt areas should be elevated with
support feet or a snow stand.
BEFORE YOU REQUEST A
“SERVICE CALL”
CHECK FOR THESE EASILY SOLVED
PROBLEMS:
• Check the indoor and outdoor disconnect switches. Verify
that circuit breakers are ON or that fuses have not blown.
• Check for sufficient airflow. Check the air filter(s) for any
accumulations of dirt. Check for blocked return-air or supplyair registers. Be sure registers are open and unobstructed.
• Check the settings on your indoor thermostat. If you desire
cooling, make sure that the temperature control selector is set
below room temperature and the SYSTEM or MODE control
is set to COOL or AUTO. If you require warmth, make sure
that the temperature control selector is set above room temperature and the SYSTEM or MODE control is set to HEAT or
AUTO. The FAN control should be set to ON for continuous
blower operation or AUTO if you wish blower to function only
while your heat pump is operating.
If your comfort system still fails to operate, turn your system
off and contact your servicing dealer for troubleshooting and
repairs. Specify your apparent problem, and state the model
and serial numbers of your equipment. (You should have them
recorded on the last page of this booklet.) With this information, your dealer may be able to offer helpful suggestions over
the phone or save valuable time through knowledgeable preparation for the service call.
REGULAR DEALER
MAINTENANCE
In addition to the routine maintenance that you perform, your home
comfort system should be inspected regularly by a properly trained
service technician. The inspection
(preferably twice each year, but at
least once every year) should
include the following:
• Routine inspection of air filter(s). Replacement or cleaning
as required.
• Inspection and cleaning of the blower wheel, housing, and
motor as required.
• Inspection and, if required, cleaning of indoor and outdoor coils.
• Inspection of the indoor coil drain pan, plus the primary and
secondary drain lines. If supplied, the auxiliary drain pan and
line should be inspected at this time. Service should include
cleaning if required.
• A check of all electrical wiring and connections.
• A check for secure physical connections of individual components within units.
• Operational check of the heat pump system to determine
actual working condition. Necessary repair and/or adjustment
should be performed at this time.
• Your servicing dealer may offer an economical service
contract that covers seasonal inspections. Ask for further
details.
FOR THE RECORD
Record the model, product, and serial numbers of your new
equipment. This information, along with the other readyreference facts requested will be necessary should you ever
require information or service.
Installation: Date______________ Dealer Name, Address, Phone_____________________________________________
Outdoor Unit Product No.__________ Model No._________________Serial No._________________________________
Indoor Unit Product No.__________ Model No._________________Serial No._________________________________
© Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231 Printed in U.S.A. edition date: 03/06 Catalog No. OM02-66
Manufacturer reserves the right to change, at any time, specifications or designs without notice and obligations Replaces: New
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