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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53420004-01 Printed in U.S.A. Form 42-3SI Pg 1 12-09 Replaces: 42-2SI
Installation, Start-Up and Service
Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . . . 1
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
PRE-INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-39
Unpack and Inspect Units . . . . . . . . . . . . . . . . . . . . . . . . 3
Protect Units From Damage . . . . . . . . . . . . . . . . . . . . . . 3
Prepare Jobsite for Unit Installation. . . . . . . . . . . . . . 3
Identify and Prepare Units. . . . . . . . . . . . . . . . . . . . . . . . 3
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-67
Step 1 — Place Units in Position . . . . . . . . . . . . . . . . 40
• 42C UNITS
• 42V UNITS
• 42D UNITS
• 42S UNITS
Step 2 — Make Piping Connections . . . . . . . . . . . . . 42
• VALVE PACKAGES
• 42C,D,V DRAIN CONNECTIONS
• 42C,D,V WATER SUPPLY/RETURN
CONNECTIONS
• 42C,D,V STEAM CONNECTIONS
• 42C,D,V DIRECT EXPANSION (DX) REFRIGERANT
PIPING
• TEST AND INSULATE
Step 3 — Make Electrical Connections . . . . . . . . . . 55
• STANDARD WIRING PACKAGES
Step 4 — Make Duct Connections . . . . . . . . . . . . . . . 66
Step 5 — Frame and Finish Unit. . . . . . . . . . . . . . . . . 66
Step 6 — Cut out Openings for Grilles and
Thermostats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Step 7 — Make Final Preparations. . . . . . . . . . . . . . . 67
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67,68
Excessive Condensation on Unit. . . . . . . . . . . . . . . . 67
To Clean Coil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Coil Air Vent (Manual or Automatic) . . . . . . . . . . . . . 67
Check Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Fan Motor Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Clean Fan Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Clean Electric Heater. . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Clean or Replace Air Filters . . . . . . . . . . . . . . . . . . . . . 68
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
START-UP CHECKLIST FOR 42C,D,S,V SERIES
FAN COIL AIR CONDITIONERS. . . . . . . . CL-1, CL-2
SAFETY CONSIDERATIONS
Installation of this unit can be hazardous due to electrical com-
ponents and equipment location (such as a ceiling or elevated
structure). Only trained, qualified installers and service
mechanics should install and service this equipment.
When installing this unit, observe precautions in the literature,
labels attached to the equipment, and any other safety precau-
tions that apply.
• Follow all safety codes.
• Wear safety glasses and work gloves.
• Use care in handling and installing this accessory.
INTRODUCTION
This document contains general installation instructions for
the 42C,D,S,V unit fan coils. Refer to the unit-wiring diagram
installed on the blower housing or specific manufacturer litera-
ture for any other type of factory-mounted controls.
See drawings for unit configurations, dimensions, clearances,
and pipe connections. Refer to unit wiring label for all electrical
connections; follow NEC (National Electrical Code) and local
codes.
PHYSICAL DATA
Component weight data, shipping weights, and filter data of
the 42C,D,S,V units are provided in Tables 1-4.
WARNING
ELECTRIC SHOCK HAZARD To avoid the possibility of
electrical shock, open and tag all service switches before
installing this equipment.
42C,D,S,V Series
Fan Coil Air Conditioners