Owner`s manual | Carrier 25VNA Heat Pump User Manual

Infinityt Variable Speed Heat Pump
with Greenspeedt Intelligence
2 to 5 Nominal Tons
Owner’s Manual
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
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.
You may notice your system runs for longer periods of time. This
system is designed to meet cooling or heating needs of the home at
a wide range of conditions. Your indoor temperature will remain
more consistent with fewer drafts, better humidity control,
enhanced comfort and enhanced energy efficiency.
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
factory--authorized kits or accessories when modifying this
Read and follow all instructions and warnings, including labels
shipped with or attached to unit before operating your new heat
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.
Your Carrier heat pump system is controlled by a wall--mounted
Infinity Control installed inside your home. This system requires
an Infinity Control which has software designed specifically to
operate this system. See the Infinity Control Homeowner Guide
for more details on system operation.
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.
Your heat pump will run as long as necessary to maintain the
indoor temperature selected on your Infinity Control. 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:
S Frequent opening of exterior doors
S Operating laundry appliances
S Taking hot showers
S More than the usual number of people present in the home
S More than the normal number of electric lights in use
S Drapes or blinds are open on the sunny side of the home
Heat pump systems have a few unique features and operations that
you should be aware of:
S During the heating cycle, your heat pump delivers a constant
flow of air at around 95° to about 105° F, compared to sudden
blasts of hot air provided by a typical furnace.
S 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. At the beginning
and end of the defrost cycle, you may hear a "whoosh" sound
coming from the unit. This is normal for heat pump
S Heat pumps installed in areas expecting snow are elevated with
support feet.
Your new variable speed heat pump with Greenspeedt
Intelligence is different from most heating and cooling systems.
Because this is a variable speed system, it is designed to operate at
different speeds depending on the temperature and humidity
conditions. You may notice the sound coming from the outdoor
unit changing from time to time, and from season to season. In
winter, the system will operate at higher speeds as it gets colder
outside to maintain its heating performance. The higher speed
produces a higher sound. This change of speeds allows the system
to operate more efficiently and maintain comfortable conditions
inside the home. You may also hear a slight “purr” at start--up and
shut down. These sounds are normal and do not represent a
problem with your system.
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:
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. Lock out and tag switch with suitable warning
NOTE: There may be more than one electrical disconnect switch.
S 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.
S 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.
S 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.
S 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.
S 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.
S 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,
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.
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.
Fig. 1 -- Electrical Disconnects
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
and wear appropriate protective clothing and gloves when
handling parts or reaching into the unit.
S 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.
S 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.
Before you request dealer service, check for these easily solved
S Check the indoor and outdoor disconnect switches Also check
your main electrical panel circuit breakers or fuses.
S Check for sufficient airflow. Air filter(s) should be reasonably
clean and interior vents should be open and unobstructed.
S Check Infinity Control 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.
S 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).
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:
S Routine inspection of air filter(s) with replacement or cleaning
as required
S Inspection and cleaning of the blower wheel housing and
S Inspection and, if required, cleaning of indoor and outdoor
S 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.
S Check all electrical wiring and connections
S Check for secure physical connections of individual parts in
each unit
S Operational check of the heat pump system to determine actual
working condition. Necessary repair and, or adjustment should
be performed at this time.
Always Ask For
Copyright 2011 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231
Printed in U.S.A.
Edition Date: 05/11
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Catalog No:OM25VNA ---01
Replaces: New
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