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Carrier 48HX030-060 Installation, Start-up And Service Instructions Manual

Download Installation, start-up and service instructions manual of Carrier 48HX030-040 Heat Pump for Free or View it Online on All-Guides.com. This version of Carrier 48HX030-040 Manual compatible with such list of devices, as: 48HX030-040, 48HX030-060, 48HX036-080, 48HX048-100, 48HX060-080

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Installation, Start-Up and

Service Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS ................ 1-6

General ................................... 1

RECEIVING AND INSTALLATION ........... 7-14

Step 1 — Check Equipment ................ 7

• IDENTIFY UNIT

• INSPECT SHIPMENT

Step 2 — Provide Unit Support .............. 7

• ROOF CURB

• SLAB MOUNT

• FLUSH MOUNT

Step 3 — Field Fabricate Ductwork .......... 7

Step 4 — Provide Clearances ............... 7

Step 5 — Rig and Place Unit ................ 7

• UNITS WITHOUT BASE RAIL

• UNITS WITH OPTIONAL BASE RAIL

Step 6 — Connect Condensate Drain ........ 8

Step 7 — Install Flue Hood ................. 8

Step 8 — Install Gas Piping ................. 8

Step 9 — Install Duct Connections .......... 10

• CONFIGURING UNITS FOR DOWNFLOW

(Vertical) DISCHARGE

Step 10 — Install Electrical Connections ..... 12

• HIGH-VOLTAGE CONNECTIONS

• SPECIAL PROCEDURES FOR 208-V

OPERATION

• CONTROL VOLTAGE CONNECTIONS

• HEAT ANTICIPATOR SETTING

• TRANSFORMER PROTECTION

PRE-START-UP ............................ 15

START-UP ................................15-25

MAINTENANCE ............................26-29

TROUBLESHOOTING ......................30-32

START-UP CHECKLIST .....................CL-1

NOTE TO INSTALLER — READ THESE INSTRUC-

TIONS CAREFULLY AND COMPLETELY before install-

ing this unit (Fig. 1). Also, make sure the User’s Manual and

Replacement Guide are left with the unit after installation.

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment

can be hazardous due to system pressure and electrical com-

ponents. Only trained and qualified personnel should

install, repair, or service air-conditioning equipment.

Untrained personnel can perform basic maintenance func-

tions of cleaning coils and filters. All other operations should

be performed by trained service personnel. When working

on air-conditioning equipment, observe precautions in the

literature, tags and labels attached to the unit, and other safety

precautions that may apply.

Follow all safety codes. Wear safety glasses and work gloves.

Use quenching cloth for unbrazing operations. Have fire ex-

tinguisher available for all brazing operations.

Understand the signal words — DANGER, WARNING,

and CAUTION. Danger identifies the most serious hazards

which will result in severe personal injury or death. Warning

indicates a condition that could result in personal injury. Cau-

tion is used to identify unsafe practices which would result

in minor personal injury or product property damage.

Improper installation, adjustment, alteration, service, main-

tenance, or use can cause carbon monoxide poisoning,

fire, or an explosion which can result in personal injury

or unit damage. Consult a qualified installer, service agency,

or gas supplier for information or assistance. The quali-

fied installer or agency must use only factory-authorized

kits or accessories when modifying this product.

Before performing service or maintenance operations on

unit, turn off gas supply then unit main power switch.

Electrical shock could cause personal injury.

General — The 48HX units (see Fig. 1) are fully self-

contained, combination electric heat pump units with

gas-fired back-up heat. The units are designed for outdoor

installation. See Fig. 2-5 for unit dimensions. All unit sizes

have discharge openings for both horizontal and down-

flow configurations, and are factory shipped with all 4 duct

openings covered. Units may be installed either on a rooftop

or a ground-level cement slab. See Fig. 6 for roof curb

dimensions.

Fig.1—Typical 48HX Unit Shown with Optional

Base Rail

48HX030-060

Dual Fuel Heat Pump Units

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book 1 4

Tab 5a 5a

PC 111 Catalog No. 534-722 Printed in U.S.A. Form 48HX-3SI Pg 1 9-98 Replaces: 48HX-2SI