Carrier Infinity 25VNA - User Manual

Owner’s Manual
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:
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.
ABOUT YOUR HEAT PUMP SYSTEM
Our products are designed, tested and built in accordance with US
Department of Energy standardized procedures and other standards;
however, actual operating results and efficiencies may vary based on
manufacturing and supplier tolerances, equipment configuration,
operating conditions and installation practices.
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 for
future reference.
USING YOUR NEW CARRIER SYSTEM
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.
VARIABLE SPEED 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.
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 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:
• 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, your heat pump delivers a constant flow of
air at around 95°F (35°C)to about 105°F (41°C), compared to sudden
blasts of hot air provided by a typical furnace.
• 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 applications.
• Heat pumps installed in areas expecting snow are elevated with
support feet.
SOUND
Your new heat pump with Greenspeed 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.
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:
25VNA
Infinity™Variable Speed Heat Pump
with Greenspeed™ Intelligence
2-5 Nominal Tons
WARNING
!
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.

Summary

General Safety Precautions

Warning Hazards

Hazards that could result in personal injury or death.

Caution Hazards

Unsafe practices resulting in minor injury or product/property damage.

Notes and Suggestions

Suggestions for enhanced installation, reliability, or operation.

About Your Heat Pump System

Identifying Your System

Explains the split system and locating rating plate information.

Using Your New Carrier System

Details control via Infinity Control and its software.

Variable Speed Operation

Explains longer run times for consistent temperature and efficiency.

Home Heating and Cooling

Operation Under Extreme Conditions

Explains longer run times due to specific conditions like open doors or high occupancy.

Important Heat Pump Facts

Heat Pump Sound Characteristics

Describes normal operating sounds of the variable speed system.

Routine Maintenance Overview

Electrical Safety Warning

Handling Precautions

Maintenance and Operation Guidelines

Filter Maintenance

Importance of keeping the air filter clean for efficiency and unit life.

Ventilation Requirements

Avoid blocking floor, wall, or ceiling vents for optimal airflow.

Outdoor Unit Airflow

Ensure unrestricted airflow around the outdoor unit; clear debris.

Condensate Drain Check

Periodically check the condensate drain for clogs.

Cooling Mode Temperature Limit

Do not operate below 55°F/13°C in cooling mode without modification.

Heating Mode Temperature Limit

Do not operate above 66°F/19°C in heating mode.

Base Pan Drainage

Check and remove debris from the base pan for proper drainage.

Level Installation Importance

Ensure the outdoor unit remains level for proper drainage.

Specialized Maintenance

Sea Coast Coil Maintenance

Periodic washing of outdoor unit surfaces and coil due to corrosive salt.

Troubleshooting and Service

Pre-Service Checks

Check disconnects, airflow, and Infinity Control settings before calling service.

Understanding Time Delays

Explains built-in delays for equipment protection and comfort.

Dealer Service Information

Have model and serial numbers ready when contacting your dealer.

Regular Dealer Maintenance

Maintenance Checklist

Outdoor Unit Specific Checks

Monthly and annual checks for the outdoor unit components.

Indoor Unit Specific Checks

Checks for indoor unit components, including filters and coils.

Carrier Infinity 25VNA Specifications

General

Cooling Capacity	24, 000 - 60, 000 BTU/h
Heating Capacity	24, 000 - 60, 000 BTU/h
Compressor Type	Variable Speed
Stages	Variable
Refrigerant	R-410A
Wi-Fi Connectivity	Yes
Type	Air Source Heat Pump
Operating Temperature Range (Cooling)	Up to 125°F