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Contents
Introduction
Read this manual carefully before attempting to install, oper-
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ate, or perform maintenance on this unit. Installation and
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maintenance should be performed by qualified service techni-
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cians only. Do NOT use this furnace for temporary heating of
buildings under construction.
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As shipped from the factory, this unit is for use with natural gas
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only. It is listed by Underwriters Laboratory. An LP Gas conver-
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sion kit is available. Extreme mounting kits for slab and curbs
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are also available.
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Packedaged units are designed for outdoor mounting with a
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vertical condenser discharge. They can be located either at
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ground level or on a roof in accordance with local codes or
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National Fuel Gas Code (ANSI-Z223.1A) Latest Revision.
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Since these units are designed exclusively for outdoor opera-
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tion, additional flue venting systems are not required. Each
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unit contains an operating charge of refrigerant as shipped.
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Extreme mounting kits are available for slab (BAYEX-
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MK003A), utility curb (BAYEXMK002B), or curb (BAYEX-
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MK001A) mountings.
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This guide is organized as follows:
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Step 1- Inspect Shipment
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Step 2- Determine Unit Clearances
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Step 3- Review Location and Recommendation Information
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Step 4- Unit Installation
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Step 5- Unit Startup
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Sequence of Operation
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Maintenance
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Step 1-Inspect Shipment
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1. Check for damage after the unit is unloaded. Report promptly
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to the carrier any damage found to the unit. Do not drop the
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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 14.
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2. Check the unit nameplate to determine if the unit is correct for
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the intended application. The power supply must be adequate
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for 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. The Flue Hood is included with the unit's literature pack.
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5. If this unit is being installed on a curb, verify that the correct
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curb is provided for the unit.
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4YCZ6036 uses model BAYCURB050.
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4YCZ6048 and 4YCZ6060 use model BAYCURB051.
6. If the unit is being hoisted, accessory kit BAYLIFT002B 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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- Electrical Wiring
- Control Wiring (Class II)
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