Trane 18-EB24D1-19, WCC-IG-19 Installer's Manual

18-EB24D1-19

WARNING:

HAZARDOUS VOLTAGE - DISCONNECT POWER and DISCHARGE

CAPACITORS BEFORE SERVICING

Installer's Guide

WCC-IG-19

Single Packaged Heat Pump, 13 SEER Convertible, 1½ - 5 Ton, R-410A

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.

4WCC3018 through 4WCC3060

4WCX3018 through 4WCX3060

Installer’s Guide

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WARNING

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WARNING

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WARNING

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CAUTION

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CAUTION

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CAUTION

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CAUTION

Safety Considerations

IMPORTANT: Read this entire manual before beginning installation procedures.

Read this manual carefully before attempting to install, operate, or perform maintenance on this unit. Installation and maintenance should be performed by qualiﬁed service technicians only.

NOTE: "Warnings" and "Cautions" appear at appropr iate places in this manual. Your personal safety and the proper operation of this air conditioning product require that you follow them carefully. The manufacturer assumes no liability for installations or servicing performed by unqualiﬁed personnel.

NOTICE

Warning and Cautions appear at appropriate locations throughout this guide. Read these carefully.

WARNING: INDICATES A POTENTIALLY HAZARDOUS SITUATION WHICH, IF NOT AVOIDED, COULD RESULT IN DEATH OR SERIOUS INJURY.

CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices and where propertydamage-only accidents could occur.

CONTAINS REFRIGERANT! SYSTEM CONTAINS OIL AND REFRIGERANT UNDER HIGH PRESSURE. RECOVER REFRIGERANT TO RELIEVE PRESSURE BEFORE OPENING SYSTEM. Failure to follow proper procedures can result in personal illness or injury or severe equipment damage.

RECONNECT ALL GROUNDING DEVICES. All parts of this product that are capable of conducting electrical current are grounded. If grounding wires, screws, straps, clips, nuts, or washers used to complete a path to ground are removed for service, they must be returned to their original position and properly fastened.

Unit contains R-410A Refrigerant! R-410A operating pressure exceeds the limit of R-22. Proper service equipment is required. Failure to use proper service tools may result in equipment damage or personal injury.

SERVICE

Use only R-410A Refrigerant and approved POE compres-

sor oil.

SAFETY HAZARD! This information is for use by individuals having adequate backgrounds of electrical and mechanical experience. Any attempt to repair a central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use.

SAFETY HAZARD! Bodily injury can result from high voltage electrical components, fast moving fans, and combustible gas. For protection from these inherent hazards during installation and service, the electrical supply must be disconnected and the main gas valve must be turned off. If operating checks must be performed with the unit operating, it is the technicians responsibility to recognize these hazards and proceed safely.

SAFETY HAZARD! Do not operate the unit without the evaporator fan or coil access panels in place. Reinstall the access panels after performing maintenance procedures on the fan. Operating the unit without the access panels properly installed may result in severe personal injury or death.

Hot Surface! Do Not touch top of compressor. May cause minor to severe burning.

Caution must be taken at all times to avoid personal injuries and/or damage to equipment.

IMPORTANT: Wear appropriate gloves, arm sleeve protectors,

and eye protection when servicing or maintaining this equipment.

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Installer’s Guide

Contents

Safety Considerations 2 Introduction 3 Step 1-Inspect Shipment 3 Step 2-Determine Unit Clearances 4 Step 3-Review Location & Recommendation

Information 16

Step 4-Unit Installation 17 Ground Level Installation 17 Rooftop Installation -- Curb Mounting 17 Covert Horizontal Airﬂow to Down Airﬂow 17 Install Full Perimeter Roof Mounting Curb 17 Lifting and Rigging 18 Placing the Unit on the Mounting Curb 18 Rooftop Installation -- Frame Mounting 19 Rooftop Installation -- No Curb/Frame 19 Ductwork Installation 22 Attaching Downﬂow Ductwork to Roof Curb 22 Attaching Horizontal Ductwork to Unit 22 Condensate Drain Piping 22 Air Filter Installation 22 Electrical Wiring 23 Electrical Connections 23 Electrical Power 23 Disconnect Switch 23 Overcurrent Protection 23 Power Wiring 23 Field Wiring Diagram 24 Control Wiring (Class II) 25 Step 5-Unit Startup 25 Pre-start Quick Checklist 25 Starting the Unit in the Cooling Mode 25 Operating Pressures 25 Voltage Check 25 Cooling Shut Down 25 Starting the Unit in Heating Mode 26 Heating Shutdown 26 Sequence of Operation 26 Demand Defrost Operation 26 Defrost Control 26 Final Installation Checklist 27 Maintenance 27 Owner Maintenance 27 Service Maintenance 27 Cooling Season 27 Heating Season 27 Indoor Fan Motor Speed Tap Setting 27

Introduction

Read this manual carefully before attempting to install, operate, or perform maintenance on this unit. Installation and maintenance should be performed by qualiﬁed service technicians only. This unit is listed by Underwriters Laboratory.

Model 2/4WC*3 heat pump units are designed for outdoor mounting with a vertical condenser discharge. They can be located either at ground level or on a roof in accordance with local codes. Each unit contains an operating charge of refrigerant as shipped.

Extreme mounting kits are available for slab (BAYEXMK003A), utility curb (BAYEXMK002B) and perimeter curb (BAYEXMK001A) mountings.

This guide is organized as follows:

Step 1 - Inspect Shipment Step 2 - Determine Unit Clearances Step 3 - Review Location & Recommendation Information Step 4 - Unit Installation Step 5 - Unit Startup Sequence of Operation Maintenance

Step 1—Inspect Shipment

1. Check for damage after the unit is unloaded. Report promptly to the carrier any damage found to the unit. Do not drop the unit.

IMPORTANT: To prevent damage to the sides and top of the

unit when hoisting, retain the top shipping skid on the unit or use “spreader bars” as shown on page 20.

2. Check the unit’s nameplate to determine if the unit is correct for the intended application. The power supply must be adequate for both the unit and all accessories.

3. Check to be sure the refrigerant charge has been retained during shipment. Remove the Compressor access panel to access the 1/4" ﬂare pressure taps.

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4. If this unit is being installed on a curb, verify that the correct curb is provided with the unit.

• 4WC*3018-036 use model BAYCURB050A. • 4WC*3042-060 use model BAYCURB051A.

5. If the unit is being hoisted, accessory kit BAYLIFT002A is recommended. It includes a kit of four (4) lifting lugs and instructions.

NOTE: If practical, install any internal accessories to the unit at the shop.

Installer’s Guide

Step 2—Determine Unit Clearances

Figures 1 through 12 show the unit critical dimensions. Figures 1 through 6 show the 4WCC3 clearances and Figures 7 through 12 show the 4WCX3 clearances.

NOTE: The view labeled “Bottom Side” represents the Base as viewed looking up from

underneath the unit.

Figure 1. 4WCC3018 through 4WCC3036 (1 of 3)

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