Carrier 48KHA Series Installation, Start-Up And Service Instructions Manual

48KHA,KLA
Packaged Heating/Cooling Units
Installation, Start-Up and Service Instructions
NOTE TO INSTALLER: After installation, leave these instructions, Owner's Manual and Parts Replace¬
ment Guide with equipment owner. __
CONTENTS
Page
SAFETY CONSIDERATIONS.1
GENERAL.1,2
INSTALLATION.2-8
Step 1 —Rig and Place Unit.2-4
• ROOFTOP INSTALLATION
• GROUND LEVEL INSTALLATION
• CLEARANCES
• CONDENSATE DISPOSAL
• VENTING
Step 2—Make Gas Piping Connections.5,6
Step 3—Make Duct Connections.6
Step 4—Make Wiring Connections.6,7
• HIGH-VOLTAGE CONNECTIONS
• SPECIAL PROCEDURES FOR
208-V OPERATION
• LOW-VOLTAGE CONNECTIONS
• HEAT ANTICIPATOR SETTING
START-UP.9-16
SERVICE.16-19
TROUBLESHOOTING CHARTS.20,21
SAFETY CONSIDERATIONS
A WARNING
Improper installation, adjustment, alteration, service,
maintenance or use can cause carbon monoxide poison¬
ing, explosion, fire, electric shock or other occurrences
which may injure you or damage your property. Con¬
sult a qualified installer, service agency or the gas sup¬
plier for information or assistance.
NOTE: Installation of this unit must conform to the guide¬
lines presented in these Installation Instructions. Read and
become familiar with this publication before starting
installation.
Only trained, qualified installers and service mechanics
should install, start-up and service this equipment. Consult
the User's Manual for routine maintenance. All other opera¬
tions should be performed by trained service personnel,
personnel.
• Follow all safety codes.
• Wear safety glasses and work gloves.
• Use care in handling, rigging and setting bulky equip¬
ment.
• Observe precautions in these instructions and on equip¬
ment tags, stickers and labels.
A WARNING
Do not disconnect electric power to this appliance with¬
out first turning off gas supply. Be sure power to equip¬
ment is shut off before maintenance or service.
Fig. 1—Model 48KHA,KLA
GENERAL
Models 48KHA.KLA packaged gas/electric units (Fig. 1) are
design certified in accordance with ANSI Z21.47B-1986,
ARI Standard 210-81 and ARI Standard 270-84. The units
are design certified by the American Gas Association
(AGA) for use with natural or propane gases with appropri¬
ate controls or orifices. See Table 1 for heating input rat¬
ings. Models 48KHA.KLA units are fully self-contained,
combination gas-heating/electric-cooling units designed for
outdoor installation on either a rooftop or ground-level slab.
May be installed directly on wood flooring or on Class A,
Class B or Class C roof covering materials.
These units are equipped with an energy-saving automatic,
intermittent, electric spark ignition system that does not
have a continuously burning pilot. All units are manufac¬
tured with natural gas controls.
Units with number 1 in the 4th digit location of model num¬
ber in Table 1 meet California oxides of nitrogen (NOx) max¬
imum emission requirements.
Units are factory charged with R-22 refrigerant. To install:
connect gas supply, air ducts, high- and low-voltage wiring
and condensate drain, and install a field-supplied air filter in
the return-air ductwork.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Bookl 1 I 4 PC 101 Catalog No 534-862 Printed in USA Form 48KH,KL-19SI Pg 1 1-88 Replaces: 48KH,KL-17SI
Tab llalla
For replacement items contact distributor.