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88-4YCA4001-1A-EN

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.

Packaged 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

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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.

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

the unit when hoisting, use “spreader
bars”.

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.

4. If this unit is being installed on a curb, verify that

the correct curb is provided with the unit.

Use model BAYCURB060A

5. If the unit is being hoisted, accessory kit

BAYLIFT002A is recommended. It includes a kit of
four (4) lifting lugs and instructions.

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

The packaged units have been evaluated in
accordance with the Code of Federal
Regulations, Chapter XX, Part 3280 or the
equivalent.

“SUITABLE FOR MOBILE HOME USE.”

Summary of Contents for 4YCA4024A1060A

Page 1: ...uipment by an unqualified person could result in death or serious injury When working on the equipment observe all precautions in the literature and on the tags stickers and labels that are attached t...

Page 2: ...tr ri ic ca al l c cu ur rr re en nt t a ar re e g gr ro ou un nd de ed d I If f g gr ro ou un nd di in ng g w wi ir re es s s sc cr re ew ws s s st tr ra ap ps s c cl li ip ps s n nu ut ts s o or r...

Page 3: ...Determine Unit Clearances 5 Step 3 Review Location and Recommendation Information 7 Step 4 Unit Installation 8 Step 5 Unit Startup 19 Sequence of Operation 21 Airflow Tables 23 Maintenance 25 Importan...

Page 4: ...c ct t S Sh hi ip pm me en nt t 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 I Im mp po or rt ta an nt t To prevent da...

Page 5: ...88 4YCA4001 1A EN 5 Step 2 Determine Unit Clearances Figure 1 Outline Drawing...

Page 6: ...6 88 4YCA4001 1A EN Figure 2 Outline Drawing S St te ep p 2 2 D De et te er rm mi in ne e U Un ni it t C Cl le ea ar ra an nc ce es s...

Page 7: ...serviceability maximum capacity and peak operating efficiency 2 Refer to the Installation section for instruction on converting the supply and return airflow covers to down airflow 3 The field assemb...

Page 8: ...oof There must be a weatherproof seal where the duct enters the structure 5 Do not expose the unit to direct roof water runoff 6 Seal all holes through exterior walls in accordance with local codes 7...

Page 9: ...ure 4 Converting Horizontal to Down Airflow HORIZONTAL SUPPLY AIR COVER SHEET METAL SCREWS HORIZONTAL RETURN AIR COVER Figure 5 Lifting and Rigging Base of unit rest on top of curb r ails Drip lip on...

Page 10: ...ta al ll la at ti io on n F Fr ra am me e M Mo ou un nt ti in ng g For rooftop applications using field fabricated frame and ducts use the following procedure 1 Prepare the hole in the roof in advanc...

Page 11: ...and weatherproofed in accordance with local codes 11 Access and service clearances for the unit must be given careful consideration when locating the duct entrance openings Figures Step 2 Determine U...

Page 12: ...w these guidelines for ductwork construction Connections to the unit should be made with three 3 inch canvas connectors to minimize noise and vibration transmission Elbows with turning vanes or splitt...

Page 13: ...ol ll lo ow w t th he e s sa af fe et ty y w wa ar rn ni in ng g e ex xa ac ct tl ly y c co ou ul ld d r re es su ul lt t i in n s se er ri io ou us s i in nj ju ur ry y d de ea at th h o or r p pr r...

Page 14: ...lt at pressures lower than 5 5 inches water column at the unit inlet If the supply line pressure is below the minimum supply pressure indicated on the unit nameplate contact the gas supply company Fol...

Page 15: ...32 hex wrench or flat head screwdriver N No ot te e For manifold pressures and orifice sizes for gas with other BTU ratings contact the local gas utility Manifold pressure should be 3 5 inches water c...

Page 16: ...on E El le ec ct tr ri ic ca al l C Co on nn ne ec ct ti io on ns s Electrical wiring and grounding must be installed in accordance with local codes or in the absence of local codes with the National...

Page 17: ...supply agrees with equipment and heater nameplate 3 Low voltage wiring to be 18 AWG minimum conductor 4 The thermostat on the Gas Electric unit must provide a G signal in the cooling mode only During...

Page 18: ...ring within the unit and make sure all connections are tight Replace and secure all electrical box covers and access panels before leaving the unit or turning on the power to the unit H Hi ig gh h A A...

Page 19: ...t period of time install pressure gauges on the gauge ports of the discharge and suction line valves behind the Compressor access panel Check the suction and discharge pressures and compare them to th...

Page 20: ...N No ot te e Blue smoke produced by the heat exchanger during the initial burner firing is caused by a thin film of oil on the surface of the heat exchanger This oil will burn off quickly 8 Set the th...

Page 21: ...ignition has been achieved the delay to indoor fan on period begins timing and after approximately 45 seconds the indoor blower motor IDM will be energized and will continue to run during the heating...

Page 22: ...hes High Limit switch protection device open Steady ON Normal Call for Heat 5 Flashes Flame sensed and gas valve not energized or flame sensed and no W signal 6 Flashes Flame Rollout Switch open 7 Fla...

Page 23: ...47 255 263 270 277 283 289 294 Cooling High 0 CFM 1276 1229 1186 1137 1087 1039 994 950 913 874 WATTS 230 239 247 255 263 270 277 283 289 294 Heat Low 0 CFM 1116 1060 1006 950 898 849 805 760 723 668...

Page 24: ...1408 1355 WATTS 483 499 514 528 543 557 568 583 592 601 Heat Low 0 CFM 1928 1876 1819 1764 1714 1660 1602 1543 1482 1437 WATTS 526 541 557 573 586 601 613 627 641 651 Heat High 0 CFM 1829 1769 1702 16...

Page 25: ...ine these areas of the unit filters for cleaning or replacement motors and drive system components economizer gaskets for possible replacement safety controls for mechanical cleaning electrical compon...

Page 26: ...26 88 4YCA4001 1A EN N No ot te es s...

Page 27: ...88 4YCA4001 1A EN 27 N No ot te es s...

Page 28: ...anstandardair com The AHRI Certified mark indicates company participation in the AHRI Certification program For verification of individual certified products go to ahridirectory org The manufacturer h...

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