Carrier 48XP Guide User Manual

48XP
SingMe-Packaged Gas Heat/EMectric CooMing
Unit with Puron (R-410A) Refrigerant
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A Guide to Operating and Maintaining Your
Singme-Packaged Gas Heat/Emectric Cooming Unit
NEATUNG & COOLING
NOTE: Read the entire instruction manual be%re starting the
installation.
SAFETY CONSIDERATmONS
Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components Only
trained and qualified personnel should install, repair, or service
air-conditioning equipment.
Untrained personnel can per_bt_n basic maintenance timctions of
cleaning coils and filters. All other operations should be pertbm?ed
by trained service personnel. When working on air-conditioMng
equipment, observe precautions in the literature, tags, and labels
attached to the unit, and other sat)ty precautions that may apply.
Follow all safety codes. Wear safety glasses and work gloves. Use
quenching cloth _br unbrazing operations. Have fire extinguisher
available for all brazing operations.
Recognize safety infhrmation. This is the safety-alert symbolz_.
When you see this symbol on d_e product or in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, CAU-
TION, and NOTE. Danger identifies the most serious hazards,
which will result in severe personal injury or death. Warning
indicates a condition that could cause serious personal injm N or
death. (audon is used _o 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.
Note to Installer: This manual should be left with the equipment
user.
N
Do not store or use gasoline or other flammable vapors and
tiqnids in the vicinity of this or any other appliance. Failure to
follow this warning could result in fire, serious injury, or
death
Do not use this unit if any part has been under water
Immediately call a qualified sela'ice technician to inspect the
unit and to replace any part of the control system which has
been under water Failure to fbllow this warning could result
in electrical shock, fire, serious injury, or death.
Be%re per%truing recommended maintenance, be sure d-_e
main power switch to unit is turned off and lock-out tag
installed. Electric shock could cause serious injury or death.
UNiT iNTRODUCTION
This 48XP unit is a small packaged gas heat/electric cooling
system that can utilize the comfi_rt of gas heating packaged along
with e_Ecient electric air conditioning. This unit uses Puron®, the
ozone friendly refrigerant for cooling.
C99088
Fig. 1--Unit 48XP
Starting or Shutting Unit Off
1 To start the unit:
a. Turn on the electrical and gas power supply to unit.
b. Select temperattlre and set SYSTEM switch or MODE
control to desired mode.
2. To shut unit off:
NOTE: If the unit is being shut down because of a malfm_ction,
call your dealer as soon as possible.
a Set system SWITCH or MODE control to OFF.
b Turn off the electrical power, install lock-out tag and shut
off gas supply to unit.
OPERATING YOUR UNIT
The operation of your system is contlolled by the indoor tempera-
rare control. You simply adjust the thermostat and it maintains the
indoor temperature at the level you select. Most thermostats of
heating and cooling systems have 3 controls: a temperature control
selector, a FAN control, and a SYSTEM or MODE control. Refer
to your thermostat owner's manual fbr more iM'ormation.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 101 Catalog No 534-80114 Printed in USA Form OM48-16 Pg 1 6-03 Replaces: New

Carrier 48XP Guide Specifications

General

Refrigerant	R-410A
Sound Level	As low as 72 dB
Voltage	208/230 V
Dimensions	Varies by model (refer to product data sheet)
Weight	Varies by model (refer to product data sheet)

Summary

Safety Considerations

Flammable Vapors Warning

Warning against storing flammable vapors near the unit to prevent fire or serious injury.

Water Damage Warning

Warning to call a technician if the unit is submerged to prevent shock, fire, or injury.

Electrical Shock Prevention

Ensure power is off and locked out before servicing to prevent severe injury or death.

Unit Introduction and Operation

Unit Overview

Introduction to the 48XP unit, a packaged gas heat/electric cooling system using Puron refrigerant.

Starting and Shutting Down

Instructions for starting and shutting down the unit via thermostat and power supply.

Thermostat Control

Explanation of how the thermostat controls unit operation and its basic controls.

Maintenance and Service

Routine Maintenance

Discusses routine maintenance tasks that can be performed by the owner or dealer.

Owner Maintenance Precautions

Important considerations before performing maintenance tasks yourself.

Electrical Power Lockout

Mandatory safety step: turn off and lock out all electrical power before servicing.

Air Filter Maintenance

Guidelines for checking, cleaning, or replacing air filters and their importance.

Operation Without Filters Caution

Caution against operating the unit without filters to prevent damage or fire.

Fan and Coil Maintenance

Recommendations for checking fan components and coil cleaning by qualified personnel.

Component Checks and Dealer Maintenance

Condensate Drain

The drain pan and line should be checked and cleaned with cooling coils.

Compressor Oil

Compressors are shipped with oil; additional oil is rarely required.

Condenser Fan Safety

Caution against inserting objects into the fan blades; keep fan area clear.

Electrical Controls and Refrigerant Circuit

Advise contacting dealer for discrepancies in electrical controls or refrigerant circuit.

Refrigerant Recovery Warning

Warning for pressure and refrigerant recovery before repair or disposal to prevent injury.

Unit Panel Securing

Ensure all panels are secured after maintenance to prevent rain entry and airflow disruption.

Regular Dealer Maintenance Checklist

List of annual inspections recommended for dealer service technicians.

Troubleshooting: Insufficient Heating/Cooling

Steps to check for insufficient heating or cooling, starting with air filters and grilles.

Troubleshooting: Unit Not Operating

Check thermostat settings and system mode if the unit fails to operate.

Troubleshooting: Call for Service

Instructions to shut off the unit and call the dealer if problems persist.