Carrier 48XZ Guide - User Manual

NEATUNG & COOLING
48XZ
SingMe-Packaged Gas HeatlEMectric Heat Pump
Unit with Puron® (R-410A) Refrigerant
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A Guide to Operating and Maintaining Your
Single-Packaged Gas HeatlElectric Heat Pump Unit
NOTE: Read the entire instruction manual befbre starting the
installation,
SAFETY CONSIDERATIONS
Note to Installer: This manual should be left with the equipment
user
[nstallation and servicing of air-conditioMng equipment can be
hazardous due to system pressure and electrical components. OMy
trained and qualified personnel should install, repair_ or service
air-conditioMng equipment.
Untrained personnel can perform basic maintenance functions of
cleaning coils and filters. All other operations should be perfbrmed
by trained service personnel. When working on air-conditioMng
equipment, obsela'e precautions in the literature, tags, and labels
attached to the unit, and other saiEty precautions that may apply.
Follow al! safety codes. Wear safety glasses and work gloves. Use
quenching cloth for unbrazing operations. Have fire extinguisher
available fbr all brazing operations.
Improper installation, adjustment, alteration, service, mainte-
nance, or use can cause carbon monoxide poisoning, firQ or
an explosion which could result in personal injury or unit
damage. Consult a qualified installer, service agency, or gas
supplier for inf'_m_ation or assistance. The qualified installer
or agency must use only factory-authorized kits or accessories
when modifying this prodt/ct.
Be%re per%truing service or maintenance operations on unit,
mrn off gas supply to unit Then mrn off unit main power
switch. Electrical shock or explosion could cause serious
injury or death.
Do not store or use gasoline or other flamnrable vapors and
liquids 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 sel_'ice technician to inspect d_e
unit and to replace any part of the control system which has
been under water Failure to fbltow this warning could result
in electrical shock, fire, serious injury, or death.
Understand the signal words DANGER, WARNING, (AUTION,
and NOTE. These words are used with the safety-alert syrnboL
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies a hazard
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which would result in minor personal
ir_jury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
These instrnctions cover n_iMn_um requirements and conform to
existing national standards and safety codes. In some instances,
these instluctions exceed certain local codes and ordinances,
especially those that may not have kept up with changing residen-
tial construction practices. We require these instructions as a
mimnmm for a safe installation.
UNiT BNTRODUCTION
This 48XZ umt is a small packaged gas heat/electric heat pump
system that can utilize both the efficiency of heat pump heating
and the comfort of gas heating The system will optimize fbr ideal
heating, depending on several fhctors. This unit uses Puron®, the
ozone friendly refrigerant for cooling and heat pump heating.
C99088
Fig. 1--Unit 48XZ
Starting or S]hutting Unit Off
1. To start the unit:
a. Turn on d_e electrical and gas power supply to unit.
b. Select desired temperature on thermostat and set SYSTEM
switch or MODE control to desired mode.
2. To shut unit off:
Recognize safety in%rmation This is the safEty-alert symbolz_
When you see this symbol in instructions or manuals, be alert to
the potential for personal injury,
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1_
Tab PC 101 Catalog No 534-80126 Printed in U.SA Form OM48-17 Pg 1 1-04 Replaces: New

Summary

Safety Considerations

General Safety Warnings

Explanation of hazard signal words: DANGER, WARNING, CAUTION, and NOTE.

Installation and Servicing Precautions

Safety measures for qualified personnel during installation and servicing.

Unit Introduction and Operation

Unit Introduction

Overview of the 48XZ unit, its features, and refrigerant type.

Starting and Shutting Unit Off

Instructions for starting and shutting down the unit.

Operating Your Unit

Cooling Mode

Instructions for operating the unit in cooling mode.

Heat Pump Heating Mode

Instructions for operating the unit in heat pump heating mode.

Gas Heat Mode

Explanation of the supplemental gas heating source operation.

Defrost Mode

Explanation of the automatic defrost mode and its visual indicators.

Emergency Heat Mode

How to use the supplemental gas heating during heat pump issues.

Maintenance and Service

Routine Maintenance by Owner

Owner-performed maintenance tasks like checking air filters.

Air Filters

Information on checking, cleaning, or replacing air filters.

Fans and Fan Motors

Checking fan wheels, housings, and motor shaft bearings.

Indoor and Outdoor Coils

Notes on coil cleaning, to be performed by qualified personnel.

Condensate Drain

Checking and cleaning the drain pan and line.

Regular Dealer Maintenance

Recommended annual inspection items for a service technician.

Warranty and Troubleshooting

Warranty Certificate

Information on the unit's limited warranty coverage.

Before You Call for Service

Easy checks for common heating or cooling issues.

In Case of Trouble

Steps to take if unit performance is unsatisfactory after checks.

Carrier 48XZ Guide Specifications

General

Brand	Carrier
Model	48XZ Guide
Category	Heat Pump
Language	English