Carrier INFINITY 50XT-A User Manual

50XT---A
Infinityr 15 SEER
Single Packaged Heat Pump System
with PuronR (R --- 410A) Refrigerant

Owner’s Information Manual

A09032

Fig. 1 -- Unit 50XT--A

NOTE TO EQUIPMENT OWNER:

For your convenience, please record the model and serial numbers of your new equipment in the spaces
provided. This information, along with the installation data and dealer contact information, will be helpful
should your system require maintenance or service.

UNIT INFORMATION

Model # _____________________________________

Serial # ______________________________________

ACCESSORIES (List type and model #)

_____________________________________________

_____________________________________________

_____________________________________________

NOTE TO INSTALLER:

This manual must be left with the equipment owner.

INSTALLATION INFORMATION

Date Installed ________________________________

DEALERSHIP CONTACT INFORMATION

Company Name_______________________________

Address______________________________________

_____________________________________________

Phone Number _______________________________

Technician Name _____________________________

_____________________________________________

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SAFETY CONSIDERATIONS

Improper installation adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury, or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory--authorized kits or accessories
when modifying this product Refer to the individual instructions
packaged with the kits or accessories when installing.

Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have a fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions included in
literature and attached to the unit. Consult local building codes,
the current editions of the National Electrical Code (NEC) NFPA

70.

In Canada refer to the current editions of the Canadian electrical
Code CSA C22.1.

Recognize safety information. This is the safety--alert symbol
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury. Understand
these signal words; DANGER, WARNING, and CAUTION.
These words are used with the safety-- alert symbol. DANGER
identifies the most serious hazards which will result in severe
personal injury or death. WARNING signifies hazards which
could result in personal injury or death. CAUTION is used to
identify unsafe practices which may 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.

Note: Installer: This manual should be left with the equipment user.

!

CAUTION

FORYOURSAFETY

Failure to follow this caution may result in personal injury.

Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.

!

FIRE,EXPLOSION, ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury,
death or property damage.

Do not use this unit if any part has been under water.
Immediately call a qualified service technician to inspect the
unit and to replace any part of the control system which has
been under water.

!

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury
or death.

Before performing recommended maintenance, be sure the
main power switch to unit is turned off.

WARNING

WARNING

OPERATING YOUR UNIT

The operation of your heat pump system is controlled by the
Infinityr User Interface (UI). You may adjust the temperature
manually through the UI or program the UI for automatic control.
See UI manual for detailed instructions.

To better protect your investmentand to eliminateunnecessary ser­vice calls, familiarize yourself with the following facts:

1. During heating, increasing the desired temperature setting

more than 2°F(1.1°C) may cause the supplemental heaters
to be turned on for a short period of time to satisfy the
demand. Needless use of the supplementary heat reduces
potential energy savings.

2. Ice or frost tends to form on the coil during winter heating
operation. Your unit 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, and for water to drain
from the outside of unit. Do not be alarmed!

To start the unit:

.

1. Turn on the electrical power supply to unit.

2. Set MODE control to desired mode and the User Interface
for automatic control.

To shut off unit:
Note: If the unit is being shut down because of a malfunction, call

your dealer as soon as possible.

1. Set system MODE control to OFF.

2. Turn off the electrical power supply to unit.

Cooling Mode

With the UI controlset to COOL, your unitwillrun in cooling mode
until the indoor temperature is lowered to the level you have se­lected. On extremely hot days, your unit will run for longerperiods
at a time and have shorter “off” periods than on moderate days.

Heating Mode

With the UI control set to HEAT, your unit will run in heating mode
until the room temperature is raised to the level you have selected.
Of course, your unit will run for longer periods to maintain a com­fortable environment on cooler days and nights than on moderate
ones.

Supplemental Heat

Your unit is your primary heating source. Your system may also be
equipped with a supplemental heating source such as electric heat.
On cold days and nights, your system will automaticallyturn on the
supplementalheat,as needed, in order to maintainthe level of com­fort you have selected.

Defrost Mode

When your unit is providingheat to your homeor officeand the out­door temperature drops below 45°F(7.2°C), moisture may begin to
freeze on the surface of the coil. If allowed to build up, this ice would
impede airflow across the coil and reduce the amount of heat ab­sorbedfrom the outsideair. So, to maintain energy-- efficient opera­tion, your unit has an automatic defrost mode.

The defrost mode starts at a preset time interval of 30 minutes, al­though, it may be reset to 60, 90 or 120 minutes. Defrost will start
at the preset time only if the ice is sufficientto interfere with normal
heating operation.

After the ice is melted from the coil, or after a maximum of 10 min­utesin defrost mode, the unit automatically switches back to normal
heating operation.

Do not be alarmed if steam or fog appearsat 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 unit grille. This is

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