Table of Contents
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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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Table of Contents
Related Manuals for Carrier Aero 39MW Series
Summarization of Contents
PRE-INSTALLATION
Inspection
Examine unit for damage and verify correct items received before installation.
Rigging and Handling
Instructions for transferring the unit from shipping to site using lifting brackets.
Service Clearance
Ensure adequate space for service access, including coil and filter removal.
Unit Suspension
Details on methods for suspending units, recommending field-supplied platform mounts.
INSTALLATION
Indoor and Outdoor Unit Shipping Split (All Sizes)
Procedures for assembling split units, including gasket installation and section alignment.
Duct Connections
Guidelines for attaching discharge air ducts directly to the unit's discharge side.
Face and Bypass Dampers
Information on installation and adjustment of face and bypass damper assemblies.
Zone Damper Section
Installation instructions for the zone damper section and linkage.
Stacked Supply Fan, Return Fan and Exhaust Box Sections
Instructions for installing stacked fan sections onto coil sections.
Stacked Units Turning Plenum
Guidance on sealing and attaching turning plenums for stacked units.
Fan Motors and Drives
Sheaves
Details on sheave alignment and installation for proper belt drive operation.
V-Belts
Instructions for installing or replacing V-belts, including tensioning and alignment.
Direct Drive Fan Alignment
Ensuring radial distance and overlap between fan wheel and inlet cone is correct.
Fan Airflow Measurement Piezometer Ring
Procedure for calculating airflow using the piezo system and pressure drop.
Coil Installation
INSTALLATION OF SINGLE HEIGHT COILS
Steps for installing single height coils, including panel removal and securing.
INSTALLATION OF STACKED COILS
Procedures for installing coils in stacked configurations, including drain pan and spacer.
Water and Steam Coil Piping Recommendations
GENERAL
General guidelines for piping installation, including support and cleaning.
WATER COILS
Piping practices for chilled and hot water coils, including counterflow and freeze-up protection.
STEAM COILS
Piping guidelines for steam coils, including condensate removal and traps.
Coil Freeze-Up Protection
WATER COILS
Provisions to prevent freeze-up in water coils with outside air applications.
STEAM COILS
Controls and precautions for steam coils, especially for outdoor air.
Refrigerant Piping, Direct-Expansion Coils
SUCTION PIPING
Guidelines for connecting suction piping, including velocity and pressure drop.
TXV (Thermostatic Expansion Valve)
TXV LOCATION
Proper placement of the TXV bulb for accurate sensing and system performance.
TXV BULB LOCATION AND INSTALLATION
Detailed instructions for locating and installing the TXV bulb for optimal sensing.
OIL RETURN CONNECTION
Ensuring proper oil return to the compressor from evaporator coils.
EXPANSION VALVE ADJUSTMENT
Procedures for adjusting the TXV superheat setting for optimal performance.
Electric Heaters
CONNECT POWER AND CONTROL WIRES
Instructions for correctly wiring electrical power and controls to the electric heater.
Gas-Fired Duct Furnaces
INSTALLATION REQUIREMENTS
Codes, standards, and specific requirements for installing gas-fired duct furnaces.
VERIFICATION
Checks to perform before placing the equipment into service.
CONDENSATE DRAINS
Instructions for connecting and managing condensate drain lines for furnaces.
FURNACE COMPONENT IDENTIFICATION
Identification of key components within the gas-fired rack system furnace.
OPERATING AND SAFETY CONTROLS
Description of controls for gas furnaces, including rollout and high limit switches.
VENTING
Venting for Outdoor Installations
Guidelines for proper vent pipe installation and termination for outdoor units.
Venting for Indoor Installations
Requirements for sizing and installing vent systems for indoor furnace installations.
GAS SUPPLY, PIPING, AND CONNECTIONS
Pressure Testing
Procedure for pressure testing gas supply connections to ensure safety and integrity.
Energy Recovery Ventilation (ERV) Sections
RECEIVING AND INSPECTION
Steps for inspecting ERV sections for freight damage and component verification.
Main AHU
Verification of gasket installation between roof cap and baserail for the main AHU.
RIGGING AND STACKING
Rigging and lifting upper sections
Instructions for lifting and stacking ERV unit sections safely.
START-UP
Checklist
A comprehensive checklist for pre-start-up and unit verification procedures.
AIRFOIL AND FORWARD-CURVED FANS
Pre-start-up checks for airfoil and forward-curved fan assemblies.
PLENUM FANS
Start-up procedures for plenum fans, similar to airfoil fans.
DIRECT DRIVE PLENUM FANS
Start-up procedures for direct drive plenum fans, including alignment checks.
SERVICE
General
General safety practices and procedures for performing service on the unit.
Electric Heaters
Annual inspection of field and factory-made electrical connections for heaters.
Gas-Fired Furnaces (Duct and Rack System)
Procedures for inspection and operation check of gas-fired furnaces.
Fan Motor Replacement
Step-by-step instructions for removing and installing a fan motor.
Energy Recovery Ventilation
Maintenance for ERV cassettes, including inspection and cleaning.
Coil Cleaning
Regular cleaning procedures for chilled water, hot water, and steam coils.
Winter Shutdown
Recommended procedures for protecting coils from freezing during winter shutdown.
PIPING
WATER COILS
Guidelines for piping water coils, ensuring counterflow and proper venting.
STEAM COILS
Piping guidelines for steam coils, including condensate removal and traps.
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