Table of Contents
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Important —
This Document is customer property. Please return to service information pack and give this Installer's Guide to the homeowner
upon completion of work.
WARNING:
© 2011 Trane
Installer's Guide
Single Packaged Heat Pump
13 SEER, Over/Under
2, 2-1/2, 3, 3-1/2, 4, & 5 Ton, R-410A
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
2, 2-1/2, 3, 3-1/2 Tons Shown
HAZARDOUS VOLTAGE - DISCONNECT POWER and DISCHARGE
0
X E 12 0
CAPACITORS BEFORE SERVICING
18-BB36D1-4
4WHC3-IG-4
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Table of Contents
Related Manuals for Trane 4WHC3042
Summarization of Contents
Safety Considerations
General Safety Warnings
Summarizes cautions related to refrigerant, grounding, and hot surfaces.
Hazardous Voltage Warning
Highlights risks associated with high voltage electrical components and moving parts.
Fiberglass Insulation Warning
Warns about potential health risks from fiberglass insulation.
Step 3-Review Location and Recommendation Information
Clearances
Specifies minimum clearances required for unit installation and service access.
Step 4-Unit Installation
Ground Level Installation
Instructions for installing the unit on a ground-level pad.
Lifting and Rigging
Procedures and safety precautions for safely lifting and moving the unit.
Rooftop Installation Methods
Details for installing the unit on various types of rooftop structures.
Ductwork Installation
Guidance on connecting supply and return air ductwork to the unit.
Ductwork Installation
Attaching Ductwork to Roof Frame
Specific steps for connecting ducts to a roof-mounted frame.
Attaching Ductwork to Unit
Instructions for connecting ducts to the unit, emphasizing flexible connections.
Electrical Wiring
Electrical Connections and Grounding
Covers proper electrical hookups and grounding requirements per codes.
Electrical Power and Wiring
Details on supplying adequate electrical power and running wiring.
Disconnect Switch and Over Current Protection
Instructions for installing disconnects and ensuring proper circuit protection.
Accessories and Control Wiring
Guidance on connecting accessories and low-voltage control wiring.
Starting the Unit
Pre-Start Quick Checklist
A comprehensive checklist to verify all installation steps before initial startup.
Starting the Unit In the Cooling Mode
Steps to initiate unit operation for cooling.
Starting the Unit in the Heating Mode
Steps to initiate unit operation for heating.
Heating Shut-Down
Procedure for safely shutting down the unit in heating mode.
Sequence Of Operation
General Operation Modes
Overview of unit operation in AUTO, COOL, and HEAT modes.
Supplementary Heat and Defrost
Details on auxiliary heating and the demand defrost cycle.
ECM Fan Motor Adjustments
Instructions for configuring the variable speed ECM fan motor.
Maintenance
Owner Maintenance
Tasks the homeowner can perform for basic unit care.
Service Maintenance - Cooling Season
Recommended checks for technicians during the cooling season.
Service Maintenance - Heating Season
Recommended checks for technicians during the heating season.
DEFROST CONTROL
Pin Identification
Details the function of each pin on the defrost control board.
Defrost Control Checkout
Procedures for verifying the defrost control's operation and signals.
Sensor Testing Procedure
Methodology for testing the resistance of defrost control sensors.
Flash Rate Indications
Interpreting the LED flash patterns for fault detection.
Defrost Control Troubleshooting
Table of common symptoms and corrective actions for defrost control issues.
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