Trane 4WHC3048 User Manual

XE1200
2, 2-1/2, 3, 3-1/2 Tons Shown
Installer's Guide
Single Packaged Heat Pump
13 SEER, Over/Under
2, 2-1/2, 3, 3-1/2, 4, & 5 Ton, R-410A
18-BB36D1-4
4WHC3-IG-4
WARNING:
HAZARDOUS VOLTAGE - DISCONNECT POWER and DISCHARGE
CAPACITORS BEFORE SERVICING
© 2011 Trane
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
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.

Trane 4WHC3048 Specifications

General

Brand	Trane
Model	4WHC3048
Category	Heat Pump
Language	English

Summary

Safety Considerations

Electrical Safety Precautions

Addresses hazards of high voltage, moving parts, and electrical shock during servicing.

Refrigerant and Hot Surface Hazards

Warns about refrigerant pressure, R-410A handling, and hot compressor surfaces.

Grounding Device Requirements

Stresses the importance of properly reconnecting all grounding devices for safety.

Step 1-Inspect Shipment

Step 2-Determine Unit Clearances

Step 3-Review Location and Recommendation Information

Step 4-Unit Installation

Ground Level Installation

Specific instructions for installing the unit on a ground-level pad.

Rooftop Installation -- Frame Mounting

Guides installation on a roof using a fabricated frame.

Rooftop Installation -- Flat Roof - No Frame

Guides installation on a flat roof without a frame, using sleeper rails.

Ductwork Installation

Electrical Wiring

Electrical Connections

Electrical Power

Disconnect Switch

Over Current Protection

Power Wiring

Grounding

Control Wiring (Class II)

Starting the Unit

Pre-Start Quick Checklist

A comprehensive checklist to ensure all installation steps are complete before starting.

Starting the Unit In the Cooling Mode

Step-by-step instructions for initiating the unit's cooling cycle.

Starting the Unit in the Heating Mode

Step-by-step instructions for initiating the unit's heating cycle.

Sequence Of Operation

Cooling Mode

Heating Mode

Demand Defrost Operation

Describes the process by which the unit initiates and terminates defrost cycles.

Final Installation Checklist

Maintenance

DEFROST CONTROL

FAULT DETECTION

PIN IDENTIFICATION

DEFROST CONTROL CHECKOUT

PROCEDURE FOR TESTING SENSORS

FLASH RATE INDICATIONS