Carrier Aero 39MN Series - User Manual

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 Printed in U.S.A. Form 39M-21SI Rev. B Pg 1 8-2020 Replaces: 39M-20SI
Installation, Start-Up and
Service Instructions
CONTENTS
Page
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
• RE
MOVING HOLDDOWN BOLTS, AIRFOIL, PLENUM
AND FORWARD-CURVED FANS
• ADJUSTING ISOLATOR SPRINGS
External Vibration Isolation . . . . . . . . . . . . . . . . . . . 85
Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Pier or Beam Mount . . . . . . . . . . . . . . . . . . . . . . . . . 86
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Indoor and Outdoor Unit Shipping Split (All Sizes) 87
• NON-STACKED UNITS
• STACKED UNITS
Duct Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
• MI
XING BOX/INLET PLENUM/DISCHARGE
PLENUM/EXTERNAL BYPASS/RETURN FAN
• MIXING BOX/INLET PLENUM/DISCHARGE PLENUM
(BOTTOM)
• HOUSED FAN DISCHARGE CONNECTIONS (NOT
PLENUM FANS)
• BOTTOM RETURN FAN CONNECTIONS
• PLENUM FAN DUCT CONNECTIONS
• DRAW-THRU PLENUM FAN DISCHARGE
FABRICATION
Panel Cutting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Face and Bypass Dampers . . . . . . . . . . . . . . . . . . . 97
Zone Damper Section . . . . . . . . . . . . . . . . . . . . . . . 100
• ZONE DAMPER LINKAGE (FIG. 45 AND 46)
Mixing Box/Filter Mixing Box Damper Linkage . . 101
• CONTROL DAMPERS
• DAMPER LINKAGE ADJUSTMENT
• LINKAGE ADJUSTMENT
• FIELD SUPPLIED AND INSTALLED ACTUATORS
Mixing Box Damper Actuators . . . . . . . . . . . . . . . . 104
Vertical Draw-Thru Units . . . . . . . . . . . . . . . . . . . . 104
STACKED Supply Fan, RETURN FAN AND EXHAUST
BOX SECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Stacked Units Turning Plenum . . . . . . . . . . . . . . . 104
Fan Sled Disassembly . . . . . . . . . . . . . . . . . . . . . . 106
Fan Sled Dimensions . . . . . . . . . . . . . . . . . . . . . . . .106
Fan Motors and Drives . . . . . . . . . . . . . . . . . . . . . .110
• JU
NCTION BOX CONDENSATE PREVENTION
Motor Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . .110
• MOTOR OVERLOAD PROTECTION
Sheaves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110
• ALIGNMENT
V-Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111
• TENSION MEASUREMENT PROCEDURE
Direct Drive Fan Alignment . . . . . . . . . . . . . . . . . . .113
Fan Airflow Measurement Piezometer Ring . . . . .113
• CALCULATION WHEN USING THE PIEZOMETER
Outdoor Hoods and Louvers . . . . . . . . . . . . . . . . .113
Coil Connection Housing
(O
utdoor Unit — All Sizes) . . . . . . . . . . . . . . . . .114
Power Exhaust Hood Field Installation . . . . . . . . .118
Humidifier Installation . . . . . . . . . . . . . . . . . . . . . . .121
• ASSEMBLE CONTROL VALVE ASSEMBLY (FIG. 86
AND 87)
• ASSEMBLE STRAINER AND TRAP ASSEMBLY AND
VALVE ASSEMBLY (FIG. 88-91)
Assembly of Vertical Manifolds . . . . . . . . . . . . . . .124
Coil Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . .124
• IN
STALLATION OF SINGLE HEIGHT COILS
• INSTALLATION OF STACKED COILS
Water and Steam Coil Piping Recommendations .127
• GENERAL
• WATER COILS
• STEAM COILS
Coil Freeze-Up Protection . . . . . . . . . . . . . . . . . . . .129
• WATER COILS
• STEAM COILS
• INNER DISTRIBUTING TUBE STEAM COILS
Refrigerant Piping, Direct-Expansion Coils . . . . .130
• SUCTION PIPING
Distributor Nozzle Change-Out . . . . . . . . . . . . . . . .131
Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131
TXV (Thermostatic Expansion Valve) . . . . . . . . . .131
• TXV LOCATION
• SOLDER TECHNIQUES
• TXV BULB LOCATION AND INSTALLATION
• EX
TERNAL EQUALIZER CONNECTION
• OIL RETURN CONNECTION
• EXPANSION VALVE ADJUSTMENT
Hot Gas Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . .133
• SPECIAL PIPING WITH 4 SPLITS PER COIL
Hot Gas Bypass Piping and Wiring . . . . . . . . . . . .136
Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . .137
• DRAW-THRU
Aero
®
39MN,MW03-110
Indoor and Weathertight Outdoor
Air Handlers

Carrier Aero 39MN Series Specifications

General

Refrigerant	R-410A
Type	Air Handler
Cooling Capacity	Up to 5 tons
Airflow	Up to 2000 CFM
Dimensions	Varies by model
Weight	Varies by model
Efficiency	Varies with model
Construction	Galvanized steel cabinet

Summary

Introduction

Safety Considerations

Unit and Component Identification

Pre-Installation

Rigging and Handling

Procedures for transferring the unit from shipping platform to site, using lifting brackets.

Service Clearance

Ensuring adequate space for service operations like removing coils, filters, accessing motor.

Internal Vibration Isolation

Preparation of units with internal vibration isolation before installation.

Installation

Duct Connections

Instructions for connecting ductwork to the unit's discharge and inlet.

Face and Bypass Dampers

Details on installation and adjustment of face and bypass damper sections.

Fan Sled Disassembly

Procedures for removing the fan sled from the unit for component access.

Fan Motor Starter

WIRING

Instructions for connecting the field line voltage power source to the starter.

START-UP AND TEST

Procedure to verify fan operation and safety controls after starter installation.

VFD

WIRING

Instructions for connecting field-supplied power source to the VFD.

START-UP AND TEST

Procedure to verify VFD operation and program parameters.

VFD with Bypass

WIRING

Instructions for connecting field-supplied power source to the bypass box.

START-UP AND TEST

Procedure to verify fan operation and VFD operation.

VFD Configuration

START-UP WITH ASSISTANT

Procedure for initial VFD start-up using the Start-Up Assistant.

ABB E-Clipse Bypass Operator Control

BYPASS CONTROL KEYPAD AND CONTROL BOARD WIRING

Wiring information for the E-Clipse bypass control board.

Electric Heaters

CONNECT POWER AND CONTROL WIRES

Instructions for connecting power and control wiring for electric heaters.

Gas-Fired Duct Furnaces

INSTALLATION REQUIREMENTS

Requirements for installing gas-fired duct furnaces.

OPERATING AND SAFETY CONTROLS

Overview of safety controls provided for duct furnaces.

Fan Motor Replacement

Energy Recovery Ventilation

CLEANING

Procedure for periodic cleaning of the energy recovery wheel.

Coil Cleaning

Chilled water, hot water, steam, and direct expansion coils

Guidelines for regular cleaning of various coil types for peak performance.

Winter Shutdown

Coil Removal

REMOVAL OF SINGLE HEIGHT COILS (SIZES 03-36)

Step-by-step instructions for removing single height coils.

Changing Coil Hand

NUFIN COILS

Specific considerations for NuFin coils, especially for dehumidifying applications.

Piping

WATER COILS

Recommendations for piping water coils for proper operation and freeze-up prevention.

STEAM COILS

Recommendations for piping steam coils for proper operation and freeze-up prevention.

Filters