Carrier 25HBC3 Series Instruction Manual

Owner’s Information
Manual
Heat Pump System
A NOTE ABOUT SAFETY
Any time you see this symbol in manuals, instructions and on
the unit, be aware of the potential for personal injury. There are
three levels of precaution:
DANGER identifies the most serious hazards which will result in
severe personal injury or death.
WARNING signifies hazards that could result in personal injury or
death.
CAUTION is used to identify unsafe practices which would result
in minor personal injury or product and property damage.
NOTE is used to highlight suggestions which will result in
enhanced installation, reliability, or operation.
PERSONAL INJURY, DEATH AND / OR PROPERTY
DAMAGE HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
Improper installation, adjustment, alteration, service,
maintenance, or use can cause explosion, fire, electrical shock,
or other conditions which may cause personal injury 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.
Read and follow all instructions and warnings, including labels
shipped with or attached to unit before operating your new heat
pump.
!WARNING
ABOUT YOUR HEAT PUMP SYSTEM
Identifying Your System
Your new Carrier heat pump system is what we call a ”split
system.” It has an outdoor unit and an indoor unit connected to
each other with copper tubing called refrigerant lines. Each of
these units has a rating plate with the model and serial numbers
you will need to reference when calling an authorized Carrier
dealer about your system.
Take a few moments now to locate those numbers and record them
in the spaces provided on the cover of this booklet.
USING YOUR NEW CARRIER SYSTEM
Your Carrier heat pump system is controlled by a wall--mounted
thermostat installed inside your home. Because there are so many
thermostats available, please refer to the owner’s manual supplied
with your thermostat for complete details on system operation.
INFINITY OPERATION
If you own an Infinity two--stage heat pump system, you may
notice your system runs for longer periods of time. Nearly 80% of
the time it’s running, it is operating in low--stage, and your indoor
temperature will remain more consistent with fewer drafts, better
humidity control, enhanced comfort and enhanced energy
efficiency.
HEATING AND COOLING YOUR HOME
For heating or cooling operation, make sure the System or Mode
control is set to the appropriate mode. Then, adjust the
Temperature control to your desired setting. Finally, use the Fan
control to select Automatic (turns on and off as heating is needed)
or On (runs continuously).
Depending on your typical heating needs, your home comfort
system may also include a supplementary heating source that will
automatically turn on as needed. You may also select this heat
source manually if desired.
OPERATION UNDER EXTREME
CONDITIONS
Your heat pump will run as long as necessary to maintain the
indoor temperature selected on your thermostat. On extremely hot
days, your heat pump will run for longer periods at a time than on
moderate days. Your system will also run for longer periods of
time under the following conditions:
SFrequent opening of exterior doors
SOperating laundry appliances
STaking hot showers
SMore than the usual number of people present in the home
SMore than the normal number of electric lights in use
SDrapes or blinds are open on the sunny side of the home
IMPORTANT HEAT PUMP FACTS
Heat pump systems have a few unique features and operations that
you should be aware of:
SDuring the heating cycle, air from your registers may seem
cooler than you may expect. This is because your heat pump
delivers a constant flow of air at around 90° to about 105° F,
compared to sudden blasts of hot air provided by a typical
furnace. This air may feel cool if it is slightly below your body
temperature, however it is warm enough to keep your home
comfortable.
SIce or frost may form on the outdoor coil during winter heating
operation. Your heat pump will automatically melt the ice
using its defrost cycle. During defrost, you may see steam or
fog rising from the outdoor unit, which is normal.
SHeat pumps installed in areas expecting snow are elevated with
support feet.
ROUTINE MAINTENANCE
Simple, routine maintenance as described below will enhance your
heat pump system’s ability to operate economically and
dependably. Always remember the following safety precautions:
!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.
Heat Pump System
Carrier 1
turn to the expertsj
Owner’s Information
Manual
A NOTE ABOUT SAFETY
Any time you see this symbol A in manuals, instructions and on
the unit, be aware of the potential for personal injury. There are
three levels of precaution:
DANGER identifies the most serious hazards which will result in
severe personal injury or death.
WARNING signifies hazards that could result in personal injury or
death.
CAUTION is used to identify unsafe practices which would result
in minor personal injury or product and property damage.
NOTE is used to highlight suggestions which will result in
enhanced installation, reliability, or operation.
HEATING AND COOLING YOUR HOME
For heating or cooling operation, make sure the System or Mode
control is set to the appropriate mode. Then, adjust the
Temperature control to your desired setting. Finally, use the Fan
control to select Automatic (turns on and off as heating is needed)
or On (runs continuously).
Depending on your typical heating needs, your home comfort
system may also include a supplementary heating source that will
automatically turn on as needed. You may also select this heat
source manually if desired.
OPERATION UNDER EXTREME
CONDITIONS
Your heat pump will run as long as necessary to maintain the
indoor temperature selected on your thermostat. On extremely hot
days, your heat pump will run for longer periods at a time than on
moderate days. Your system will also run for longer periods of
time under the following conditions:
• Frequent opening of exterior doors
• Operating laundry appliances
• Taking hot showers
• More than the usual number of people present in the home
• More than the normal number of electric lights in use
• Drapes or blinds are open on the sunny side of the home
IMPORTANT HEAT PUMP FACTS
Heat pump systems have a few unique features and operations that
you should be aware of:
• During the heating cycle, air from your registers may seem
cooler than you may expect. This is because your heat pump
delivers a constant flow of air at around 90° to about 105° F,
compared to sudden blasts of hot air provided by a typical
furnace. This air may feel cool if it is slightly below your body
temperature, however it is warm enough to keep your home
comfortable.
• Ice or frost may form on the outdoor coil during winter heating
operation. Your heat pump will automatically melt the ice
using its defrost cycle. During defrost, you may see steam or
fog rising from the outdoor unit, which is normal.
• Heat pumps installed in areas expecting snow are elevated with
support feet.
ROUTINE MAINTENANCE
Simple, routine maintenance as described below will enhance your
heat pump system’s ability to operate economically and
dependably. Always remember the following safety precautions:
WARNING
PERSONAL INJURY, DEATH AND I OR PROPERTY
DAMAGE HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
Improper installation, adjustment, alteration, service,
maintenance, or use can cause explosion, fire, electrical shock,
or other conditions which may cause personal injury 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.
Read and follow all instructions and warnings, including labels
shipped with or attached to unit before operating your new heat
pump.
ABOUT YOUR HEAT PUMP SYSTEM
Identifying Your System
Your new Carrier heat pump system is what we call a ’’split
system.” It has an outdoor unit and an indoor unit connected to
each other with copper tubing called refrigerant lines. Each of
these units has a rating plate with the model and serial numbers
you will need to reference when calling an authorized Carrier
dealer about your system.
Take a few moments now to locate those numbers and record them
in the spaces provided on the cover of this booklet.
USING YOUR NEW CARRIER SYSTEM
Your Carrier heat pump system is controlled by a wall-mounted
thermostat installed inside your home. Because there are so many
thermostats available, please refer to the owner’s manual supplied
with your thermostat for complete details on system operation.
INFINITY OPERATION
If you own an Infinity two -stage heat pump system, you may
notice your system runs for longer periods of time. Nearly 80% of
the time it’s running, it is operating in low- stage, and your indoor
temperature will remain more consistent with fewer drafts, better
humidity control, enhanced comfort and enhanced energy
efficiency.
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.

Always Ask For
2
A07903
Main
Disconnect
Indoor
Disconnect
Outdoor
Disconnect
Thermostat
Fig. 1 -- Electrical Disconnects
PERSONAL INJURY AND/OR PRODUCT AND
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in personal injury or
product and property damage.
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.
CAUTION
!
SKeep Filter Clean
A clogged or improperly installed air filter on your indoor unit will
increase operating costs and shorten the life of the unit. For
detailed filter cleaning information refer to indoor unit literature.
SDo Not Block Floor, Wall or Ceiling Vents
When drapes, furniture, toys or other common household items
block vents, the restricted airflow lessens the system’s efficiency
and life span.
SDo Not Cover or Block Outdoor Unit
The outdoor unit needs unrestricted airflow. Do not cover it or
place items on or next to it. Do not allow grass clippings, leaves, or
other debris to accumulate on the sides or top of the unit. And,
maintain a 12” (304.8 mm) minimum clearance between the
outdoor unit and tall grass, vines, shrubs, etc.
SCheck Condensate Drain
Your heat pump removes humidity from your home during the
cooling season. After a few minutes of operation, water should
trickle from the condensate drain of the indoor coil. Check this
occasionally to be sure the drain system is not clogged. Drainage
will be limited if you live in a very dry environment.
SDo Not Operate Below 55°F/12.78°C in Cooling Mode
Your outdoor unit is not designed to operate when outdoor
temperatures are lower than 55_F/12.78_C without modification.
If operation below this temperature is required, consult your
Carrier dealer.
SDo Not Operate Above 66°F/18.89_C in Heating Mode
Your outdoor unit is not designed to operate on heating mode
when outdoor temperatures are higher than 66°F/18.89_C.You
can safely operate the system above 66°F/18.89_Con emergency
or auxiliary heat.
SBase Pan Drainage
Periodically check for and remove debris that has settled around
the base of your outdoor unit. This will ensure proper drainage of
the base pan and eliminate standing water inside the outdoor unit.
SLevel Installation
Your Carrier dealer will install the outdoor unit in a level position.
If the support base settles or shifts and the unit is no longer level,
be sure to re--level it promptly to assure proper drainage. If you
notice water or ice collecting beneath the unit, arrange for it to be
drained away from the unit.
SEA COAST COIL MAINTENANCE
Coastal locations often require additional maintenance of the
outdoor unit due to highly corrosive airborne ocean salt. Although
your new Carrier system is made of galvanized metal and is
protected by top--grade paint, take the additional precaution of
periodically washing all exposed surfaces and the outdoor coil
approximately every 3 months. Consult your installing Carrier
dealer for proper cleaning intervals and procedures for your
geographic area or ask about a service contract for regularly
scheduled professional cleaning and inspections.
TROUBLESHOOTING
Before you request dealer service, check for these easily solved
problems:
SCheck the indoor and outdoor disconnect switches Also check
your main electrical panel circuit breakers or fuses.
SCheck for sufficient airflow. Air filter(s) should be reasonably
clean and interior vents should be open and unobstructed.
SCheck thermostat settings. For cooling, your desired
temperature setting should be LOWER than the displayed
room temperature, and the System/Mode control should be on
Cool or Auto. For heating, your temperature setting should be
HIGHER than the displayed room temperature, and the
System/Mode control is set to Heat or Auto.
STime delays - depending on the Carrier heat pump you have,
there may be delays in unit operation that are built-in to protect
the equipment and your comfort. Don't be alarmed if you
notice a time delay in operation. It may be a standard
protection feature of your equipment. Check with your Carrier
Dealer for more information on time delays.
If you need to contact your Carrier dealer for troubleshooting
and/or repairs, be sure to have the model and serial numbers of
your equipment available (there are spaces on the cover for you to
write this information).
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. Many dealers offer this service at a
reduced rate with a service contract. Some service contracts offer
additional benefits such as parts discounts and no additional charge
for ”after hours” or emergency service.
Your annual system inspection should include:
SRoutine inspection of air filter(s) with replacement or cleaning
as required
SInspection and cleaning of the blower wheel housing and
motor
SInspection and, if required, cleaning of indoor and outdoor
coils
SInspection of the indoor coil drain pan, as well as the primary
and secondary drain lines. If the system has an auxiliary drain
pan and line, they should be inspected at this time as well.
Service should include cleaning if required.
SCheck all electrical wiring and connections
SCheck for secure physical connections of individual parts in
each unit
SOperational check of the heat pump system to determine actual
working condition. Necessary repair and, or adjustment should
be performed at this time.
Copyright 2007 Carrier Corp. S7310 W. Morris St. SIndianapolis, IN 46231 Printed in U.S.A. Edition Date: 11/07
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
C a t a l o g N o : O M 2 5 --- 3
R e p l a c e s: O M 2 5 --- 2
be sure to re- level it promptly to assure proper drainage. If you
notice water or ice collecting beneath the unit, arrange for it to be
drained away from the unit.
SEA COAST COIL MAINTENANCE
Coastal locations often require additional maintenance of the
outdoor unit due to highly corrosive airborne ocean salt. Although
your new Carrier system is made of galvanized metal and is
protected by top -grade paint, take the additional precaution of
periodically washing all exposed surfaces and the outdoor coil
approximately every 3 months. Consult your installing Carrier
dealer for proper cleaning intervals and procedures for your
geographic area or ask about a service contract for regularly
scheduled professional cleaning and inspections.
TROUBLESHOOTING
Before you request dealer service, check for these easily solved
problems:
• Check the indoor and outdoor disconnect switches Also check
your main electrical panel circuit breakers or fuses.
• Check for sufficient airflow. Air filter(s) should be reasonably
clean and interior vents should be open and unobstructed.
• Check thermostat settings. For cooling, your desired
temperature setting should be LOWER than the displayed
room temperature, and the System/Mode control should be on
Cool or Auto. For heating, your temperature setting should be
HIGHER than the displayed room temperature, and the
System/Mode control is set to Heat or Auto.
• Time delays - depending on the Carrier heat pump you have,
there may be delays in unit operation that are built-in to protect
the equipment and your comfort. Don't be alarmed if you
notice a time delay in operation. It may be a standard
protection feature of your equipment. Check with your Carrier
Dealer for more information on time delays.
If you need to contact your Carrier dealer for troubleshooting
and/or repairs, be sure to have the model and serial numbers of
your equipment available (there are spaces on the cover for you to
write this information).
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. Many dealers offer this service at a
reduced rate with a service contract. Some service contracts offer
additional benefits such as parts discounts and no additional charge
for ’’after hours” or emergency service.
Your annual system inspection should include:
• Routine inspection of air filter(s) with replacement or cleaning
as required
• Inspection and cleaning of the blower wheel housing and
motor
• Inspection and, if required, cleaning of indoor and outdoor
coils
• Inspection of the indoor coil drain pan, as well as the primary
and secondary drain lines. If the system has an auxiliary drain
pan and line, they should be inspected at this time as well.
Service should include cleaning if required.
• Check all electrical wiring and connections
• Check for secure physical connections of individual parts in
each unit
• Operational check of the heat pump system to determine actual
working condition. Necessary repair and, or adjustment should
be performed at this time.
Main
Disconnect/
Thermostat Indoor
Disconnect
Hsconnect
A0/003
Fig. 1 - Electrical Disconnects
CAUTION
PERSONAL INJURY AND/OR PRODUCT AND
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in personal injury or
product and property damage.
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.
• Keep Filter Clean
A clogged or improperly installed air filter on your indoor unit will
increase operating costs and shorten the life of the unit. For
detailed filter cleaning information refer to indoor unit literature.
• Do Not Block Floor, Wall or Ceiling Vents
When drapes, furniture, toys or other common household items
block vents, the restricted airflow lessens the system’s efficiency
and life span.
• Do Not Cover or Block Outdoor Unit
The outdoor unit needs unrestricted airflow. Do not cover it or
place items on or next to it. Do not allow grass clippings, leaves, or
other debris to accumulate on the sides or top of the unit. And,
maintain a 12” (304.8 mm) minimum clearance between the
outdoor unit and tall grass, vines, shrubs, etc.
• Check Condensate Drain
Your heat pump removes humidity from your home during the
cooling season. After a few minutes of operation, water should
trickle from the condensate drain of the indoor coil. Check this
occasionally to be sure the drain system is not clogged. Drainage
will be limited if you live in a very dry environment.
• Do Not Operate Below 55°F/12.78°C in Cooling Mode
Your outdoor unit is not designed to operate when outdoor
temperatures are lower than 55°F/12.78°C without modification.
If operation below this temperature is required, consult your
Carrier dealer.
• Do Not Operate Above 66°F/18.89°C in Heating Mode
Your outdoor unit is not designed to operate on heating mode
when outdoor temperatures are higher than 66°F/18.89°C. You
can safely operate the system above 66°F/18.89°C on emergency
or auxiliary heat.
• Base Pan Drainage
Periodically check for and remove debris that has settled around
the base of your outdoor unit. This will ensure proper drainage of
the base pan and eliminate standing water inside the outdoor unit.
• Level Installation
Your Carrier dealer will install the outdoor unit in a level position.
If the support base settles or shifts and the unit is no longer level,
Always Ask For
Catalog No:OM25-3
Copyright 2007 Carrier Corp. • 7310 W.Morris St. • Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 11/07
Replaces: OM25-2
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
2