Table of Contents
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Contents
Introduction
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Read this manual carefully before attempting to install, operate,
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or perform maintenance on this unit. Installation and maintenance
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should be performed by qualified service technicians only. This
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unit is listed by Underwriters Laboratory.
Model 4WCZ6 heat pump units are designed for outdoor
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mounting with a vertical condenser discharge. They can be
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located either at ground level or on a roof in accordance with local
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codes. Each unit contains an operating charge of refrigerant as
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shipped.
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Extreme mounting kits are available for slab (BAYEXMK003AA),
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utility curb (BAYEXMK002AA) and perimeter curb
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(BAYEXMK001AA) mountings.
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This guide is organized as follows:
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n
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Step 1 - Inspect Shipment
n
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Step 2 - Determine Unit Clearances
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n
Step 3 - Review Location and Recommendation Information
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n
Step 4 - Unit Installation
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n
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Step 5 - Unit Startup
n
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Sequence of Operation
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n
Maintenance
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Step 1-Inspect Shipment
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1. Check for damage after the unit is unloaded. Report
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promptly to the carrier any damage found to the unit. Do not
drop the unit.
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IMPORTANT: To prevent damage to the sides and top of
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the unit when hoisting, retain the top shipping skid on the
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unit or use "spreader bars" as shown on page 13.
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2. Check the unit's nameplate to determine if the unit is correct
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for the intended application. The power supply must be
adequate for both the unit and all accessories.
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3. Check to be sure the refrigerant charge has been retained
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during shipment. Remove the Compressor access panel to
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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
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curb is provided with the unit.
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•
4WCZ6036 uses model BAYCURB050A.
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•
4WCZ6048 and 4WCZ6060 use model BAYCURB051A.
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5. If the unit is being hoisted, accessory kit BAYLIFT002AA 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
Page 3
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