Carrier 48SS018-060 - Manual

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Page 3 – Fig. 3 — 48SS018-042 With Optional Base Rail, Unit Dimensions
Page 5 – Fig. 5 — 48SS048,060 With Optional Base Rail, Unit Dimensions
Page 7 – Fig. 7 — 48SX024-036 With Optional Base Rail, Unit Dimensions
Page 9 – Fig. 9 — 48SX042-060 With Optional Base Rail, Unit Dimensions
Page 11 – Fig. 10 — Roof Curb Dimensions
Page 12 – Fig. 11 — Slab Mounting Details; Fig. 12 — Suggested Rigging for Units Without; Fig. 13 — Suggested Rigging for Units With
Page 13 – Fig. 14 — Condensate Trap
Page 14 – Table 1 — Physical Data — Unit 48SS
Page 15 – Table 2 — Physical Data — Unit 48SX
Page 16 – Step 9 — Install Duct Connections —; Fig. 15 — Sediment Trap
Page 18 – Step 10 — Install Electrical Connections; Fig. 20 — Vertical Discharge Cover Removed
Page 19 – Table 4A — Electrical Data — Unit 48SS
Page 20 – Table 4B — Electrical Data — Unit 48SX
Page 22 – Fig. 22 — Easy Select Interface Board
Page 23 – Check for Refrigerant Leaks —; Fig. 23 — Fan Blade Clearance
Page 24 – Table 5 — Rated Gas Inputs at Indicated Manifold Pressures; Fig. 24 — Burner Assembly
Page 25 – Fig. 25 — Monoport Burners
Page 26 – Table 7 — LED Indications
Page 38 – Table 8H — Superheat Charging Table, 48SS060
Page 43 – Table 15 — Dry Coil Air Delivery* — Heating —
Page 44 – Table 17 — Wet Coil Pressure Drop; MAINTENANCE
Page 45 – Fig. 34 — Blower Housing and Flue Collector Box
Page 46 – Fig. 35 — Burner Access Panel
Page 48 – TROUBLESHOOTING; Cooling; SYMPTOM
Page 49 – Heating
Page 50 – LED Troubleshooting — Error Code; Inadequate airflow to unit.; SERVICE TRAINING; ] Packaged Service Training
Page 52 – I. PRELIMINARY INFORMATION; ELECTRICAL

Loading the manual

Installation, Start-Up and

Service Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS

. . . . . . . . . . . . . . . . . 1-9

General

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

RECEIVING AND INSTALLATION

. . . . . . . . . . . 10-22

Step 1 — Check Equipment

. . . . . . . . . . . . . . . . . . 10

• IDENTIFY UNIT
• INSPECT SHIPMENT

Step 2 — Provide Unit Support

. . . . . . . . . . . . . . 10

• ROOF CURB
• SLAB MOUNT
• FLUSH MOUNT

Step 3 — Field Fabricate Ductwork

. . . . . . . . . . . 10

Step 4 — Provide Clearances

. . . . . . . . . . . . . . . . 10

Step 5 — Rig and Place Unit

. . . . . . . . . . . . . . . . . 10

• UNITS WITHOUT BASE RAIL
• UNITS WITH OPTIONAL BASE RAIL

Step 6 — Connect Condensate Drain

. . . . . . . . . 13

Step 7 — Install Flue Hood

. . . . . . . . . . . . . . . . . . 13

Step 8 — Install Gas Piping

. . . . . . . . . . . . . . . . . . 13

Step 9 — Install Duct Connections

. . . . . . . . . . . 16

• CONFIGURING UNITS FOR DOWNFLOW

(VERTICAL) DISCHARGE

Step 10 — Install Electrical Connections

. . . . . 18

• HIGH-VOLTAGE CONNECTIONS
• SPECIAL PROCEDURES FOR 208-V

OPERATION

• CONTROL VOLTAGE CONNECTIONS;

NON-INTEGRATED CONTROL MOTOR
(NON-ICM) UNITS

• CONTROL VOLTAGE CONNECTIONS;

INTEGRATED CONTROL MOTOR (ICM)
UNITS

• HEAT ANTICIPATOR SETTING
• TRANSFORMER PROTECTION

PRE-START-UP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 22,23

START-UP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-44

MAINTENANCE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 44-47

TROUBLESHOOTING

. . . . . . . . . . . . . . . . . . . . . . 48-50

START-UP CHECKLIST

. . . . . . . . . . . . . . . . . . . . . CL-1

NOTE TO INSTALLER — Before the installation, READ
T H E S E IN S T RUCT IONS CA RE F UL LY A ND COM-
PLETELY. Also, make sure the User’s Manual and Replace-
ment Guide are left with the unit after installation. The fur-
nace is NOT to be used for temporary heating of buildings
or structures under construction.

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.

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 48SS,SX units (see Fig. 1) are fully self-

contained, combination Category I gas heating/electric cool-
ing units designed for outdoor installation. See Fig. 2-9
(pages 2-9) for unit dimensions. All unit sizes have dis-
charge openings for both horizontal and downflow configu-
rations, 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. 10 for roof curb dimensions.

Fig. 1 — Unit 48SX Shown With Optional Base Rail

48SS018-060
48SX024-060

Single Package Gas Heating/

Electric Cooling Units

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

Book 1

Tab

1a 6a

PC 111

Catalog No. 534-721

Printed in U.S.A.

Form 48SS,SX-12SI

Pg 1

9-98

Replaces: 48SS,SX-11SI

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Summary

Page 3 - Fig. 3 — 48SS018-042 With Optional Base Rail, Unit Dimensions

REQ’D CLEARANCES FOR SERVICING. in. (mm) Duct panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0Unit top . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 (914)Side opposite ducts . . . . . . . . . . . . . . . . . . . . . 36 (914) Compressor access . . . . . . . . . . . . . . ....

Page 5 - Fig. 5 — 48SS048,060 With Optional Base Rail, Unit Dimensions

Page 7 - Fig. 7 — 48SX024-036 With Optional Base Rail, Unit Dimensions

REQ’D CLEARANCES FOR SERVICING. in. (mm) Duct panel . . . . . . . . . . . . . . . . . . . . . . . . . . . 0Unit top . . . . . . . . . . . . . . . . . . . . . . . . . 36 (914)Side opposite ducts . . . . . . . . . . . . . . . . . . . . 36 (914)Compressor access . . . . . . . . . . . . . . . . . . . . ...

Carrier 48SS018-060 - Manual

Table of Contents:

Summary

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