Carrier Aero 39MN Series Installation, Start-Up And Service Instructions Manual
Indoor and weathertight outdoor air handlers
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CONTENTS
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 3
UNIT AND COMPONENT IDENTIFICATION . . . . . . . . 4
PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 84
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Rigging and Handling . . . . . . . . . . . . . . . . . . . . . . . . 84
Long-Term Storage . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Service Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Drain Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Unit Suspension . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Internal Vibration Isolation . . . . . . . . . . . . . . . . . . . . 85
External Vibration Isolation . . . . . . . . . . . . . . . . . . . 85
Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Pier or Beam Mount . . . . . . . . . . . . . . . . . . . . . . . . . 86
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Duct Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Panel Cutting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Face and Bypass Dampers . . . . . . . . . . . . . . . . . . . 97
Zone Damper Section . . . . . . . . . . . . . . . . . . . . . . . 100
Mixing Box Damper Actuators . . . . . . . . . . . . . . . . 104
Vertical Draw-Thru Units . . . . . . . . . . . . . . . . . . . . 104
BOX SECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Stacked Units Turning Plenum . . . . . . . . . . . . . . . 104
Fan Sled Disassembly . . . . . . . . . . . . . . . . . . . . . . 106
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53390024-01
Installation, Start-Up and
Service Instructions
Printed in U.S.A.
Indoor and Weathertight Outdoor
Fan Sled Dimensions . . . . . . . . . . . . . . . . . . . . . . . .106
Fan Motors and Drives . . . . . . . . . . . . . . . . . . . . . .110
Page
Motor Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . 110
Sheaves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
V-Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111
Direct Drive Fan Alignment . . . . . . . . . . . . . . . . . . .113
Fan Airflow Measurement Piezometer Ring . . . . .113
Outdoor Hoods and Louvers . . . . . . . . . . . . . . . . .113
(Outdoor Unit - All Sizes) . . . . . . . . . . . . . . . . .114
Power Exhaust Hood Field Installation . . . . . . . . .118
Humidifier Installation . . . . . . . . . . . . . . . . . . . . . . .121
• ASSEMBLE CONTROL VALVE ASSEMBLY (FIG. 86
AND 87)
Assembly of Vertical Manifolds . . . . . . . . . . . . . . .124
Coil Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . .124
Coil Freeze-Up Protection . . . . . . . . . . . . . . . . . . . .129
Refrigerant Piping, Direct-Expansion Coils . . . . .130
Distributor Nozzle Change-Out . . . . . . . . . . . . . . . .131
Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131
TXV (Thermostatic Expansion Valve) . . . . . . . . . .131
Hot Gas Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . .133
Hot Gas Bypass Piping and Wiring . . . . . . . . . . . .136
Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . .137
Form 39M-21SI Rev. B
Pg 1
Aero
39MN,MW03-110
Air Handlers
8-2020
Replaces: 39M-20SI
®
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