Trane 4YCC4024E1060A, 4YCC4030E1070A, 4YCC4036E1070A, 4YCC4036E1090A, 4YCC4042E1060A Operations Manual [en, fi]

...

Page 1

Installation and Operations Manual

Single Packaged Gas/Electric

13.4 SEER2 Convertible, 2 — 5 Ton

4YCC4024E1060A 4YCC4030E1070A 4YCC4036E1070A 4YCC4036E1090A 4YCC4042E1060A 4YCC4042E1090A 4YCC4048E1070A 4YCC4048E1090A 4YCC4060E1090A 4YCC4060E1115A

SSAAFFEETTYY WWAARRNNIINNGG

Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment 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 to the equipment.

March 2022 1188--EEBB4400DD11--11AA--EENN

Page 2

SAFETY SECTION

IImmppoorrttaanntt — This document contains a wiring diagram, a parts list, and service information. This is customer property and is to remain with this unit. Please return to service information pack upon completion of work.

WWAARRNNIINNGG

HHAAZZAARRDDOOUUSS GGAASSEESS!!

EExxppoossuurree ttoo ffuueell ssuubbssttaanncceess oorr bbyy--pprroodduuccttss ooff iinnccoommpplleettee ffuueell ccoommbbuussttiioonn iiss bbeelliieevveedd bbyy tthhee ssttaattee ooff CCaalliiffoorrnniiaa ttoo ccaauussee ccaanncceerr,, bbiirrtthh ddeeffeeccttss,, oorr ootthheerr rreepprroodduuccttiivvee hhaarrmm.. TThhiiss wwaarrnniinngg ccoommpplliieess wwiitthh ssttaattee ooff CCaalliiffoorrnniiaa llaaww,, PPrrooppoossiittiioonn 6655..

WWAARRNNIINNGG

HHAAZZAARRDDOOUUSS VVOOLLTTAAGGEE!!

FFaaiilluurree ttoo ffoollllooww tthhiiss WWaarrnniinngg ccoouulldd rreessuulltt iinn pprrooppeerrttyy ddaammaaggee,, sseevveerree ppeerrssoonnaall iinnjjuurryy,, oorr ddeeaatthh.. DDiissccoonnnneecctt aallll eelleeccttrriicc ppoowweerr,, iinncclluuddiinngg rreemmoottee ddiissccoonnnneeccttss bbeeffoorree sseerrvviicciinngg.. FFoollllooww pprrooppeerr lloocckkoouutt//ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerr ccaannnnoott bbee iinnaaddvveerrtteennttllyy eenneerrggiizzeedd..

WWAARRNNIINNGG

SSAAFFEETTYY AANNDD EELLEECCTTRRIICCAALL HHAAZZAARRDD!!

FFaaiilluurree ttoo ffoollllooww tthhiiss WWaarrnniinngg ccoouulldd rreessuulltt iinn pprrooppeerrttyy ddaammaaggee,, sseevveerree ppeerrssoonnaall iinnjjuurryy,, oorr ddeeaatthh.. TThheessee sseerrvviicciinngg iinnssttrruuccttiioonnss aarree ffoorr uussee bbyy qquuaalliiffiieedd ppeerrssoonnnneell oonnllyy.. TToo rreedduuccee tthhee rriisskk ooff eelleeccttrriiccaall sshhoocckk,, ddoo nnoott ppeerrffoorrmm aannyy sseerrvviicciinngg ootthheerr tthhaann tthhaatt ccoonnttaaiinneedd iinn tthheessee ooppeerraattiinngg iinnssttrruuccttiioonnss uunnlleessss yyoouu aarree qquuaalliiffiieedd ttoo ddoo ssoo..

CCAAUUTTIIOONN

GGRROOUUNNDDIINNGG RREEQQUUIIRREEDD!!

FFaaiilluurree ttoo iinnssppeecctt oorr uussee pprrooppeerr sseerrvviiccee ttoooollss mmaayy rreessuulltt iinn eeqquuiippmmeenntt ddaammaaggee oorr ppeerrssoonnaall iinnjjuurryy.. RReeccoonnnneecctt aallll ggrroouunnddiinngg ddeevviicceess.. AAllll ppaarrttss ooff tthhiiss pprroodduucctt tthhaatt aarree ccaappaabbllee ooff ccoonndduuccttiinngg eelleeccttrriiccaall ccuurrrreenntt aarree ggrroouunnddeedd.. IIff ggrroouunnddiinngg wwiirreess,, ssccrreewwss,, ssttrraappss,, cclliippss,, nnuuttss,, oorr wwaasshheerrss uusseedd ttoo ccoommpplleettee aa ppaatthh ttoo ggrroouunndd aarree rreemmoovveedd ffoorr sseerrvviiccee,, tthheeyy mmuusstt bbee rreettuurrnneedd ttoo tthheeiirr oorriiggiinnaall ppoossiittiioonn aanndd pprrooppeerrllyy ffaasstteenneedd..

WWAARRNNIINNGG

UUNNIITT CCOONNTTAAIINNSS RR--441100AA RREEFFRRIIGGEERRAANNTT!!

FFaaiilluurree ttoo uussee pprrooppeerr sseerrvviiccee ttoooollss mmaayy rreessuulltt iinn eeqquuiippmmeenntt ddaammaaggee oorr ppeerrssoonnaall iinnjjuurryy.. RR--441100AA ooppeerraattiinngg pprreessssuurree eexxcceeeeddss tthhee lliimmiitt ooff RR--

2222.. PPrrooppeerr sseerrvviiccee eeqquuiippmmeenntt iiss rreeqquuiirreedd.. SSeerrvviiccee uussiinngg oonnllyy RR--441100AA RReeffrriiggeerraanntt aanndd aapppprroovveedd PPOOEE ccoommpprreessssoorr ooiill..

WWAARRNNIINNGG

SSAAFFEETTYY HHAAZZAARRDD!!

OOppeerraattiinngg tthhee uunniitt wwiitthhoouutt tthhee aacccceessss ppaanneellss pprrooppeerrllyy iinnssttaalllleedd mmaayy rreessuulltt iinn sseevveerree ppeerrssoonnaall iinnjjuurryy oorr ddeeaatthh.. DDoo nnoott ooppeerraattee tthhee uunniitt wwiitthhoouutt tthhee eevvaappoorraattoorr ffaann aacccceessss ppaanneell oorr eevvaappoorraattoorr ccooiill aacccceessss ppaanneell iinn ppllaaccee..

WWAARRNNIINNGG

WWAARRNNIINNGG!!

TThhiiss pprroodduucctt ccaann eexxppoossee yyoouu ttoo cchheemmiiccaallss iinncclluuddiinngg lleeaadd,, wwhhiicchh aarree kknnoowwnn ttoo tthhee SSttaattee ooff CCaalliiffoorrnniiaa ttoo ccaauussee ccaanncceerr aanndd bbiirrtthh ddeeffeeccttss oorr ootthheerr rreepprroodduuccttiivvee hhaarrmm.. FFoorr mmoorree iinnffoorrmmaattiioonn ggoo ttoo wwwwww..PP6655WWaarrnniinnggss..ccaa..ggoovv..

IImmppoorrttaanntt:: Wear appropriate gloves, arm sleeve

protectors and eye protection when servicing or maintaining this equipment.

IImmppoorrttaanntt:: Air filters and media wheels or plates shall

meet the test requirements in UL 900.

18-EB40D1-1A-EN

Page 3

Table of Contents

Introduction, Unit Inspection and

Specification . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . 4

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Inspect Shipment . . . . . . . . . . . . . . . . . . . . . . . . . 4

Product Specifications . . . . . . . . . . . . . . . . . . . . 5

Charging in Cooling above 55°F OD

Ambient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Determine Unit Clearances . . . . . . . . . . . . . . . . . 8

Review Location and Recommendation

Information. . . . . . . . . . .. . . . . . . . . . . . . . . . . .. . . 10

Unit Installation . . . . . . . . . .. . . . . . . . . . . . . . . . . 12

Install Flue Hood. . . . . . . . . . . . . . . . . . . . . . . . . 12

Ground Level Installation. . . . . . . . . . . . . . . . . 12

Rooftop Installation—Curb

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Lifting and Rigging. . . . . . . . . . . . . . . . . . . 13

Rooftop Installation — Frame

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Rooftop Installation — No Curb/

Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Ductwork Installation . . . . . . . . . . . . . . . . . . . . 17

Attaching Downflow Ductwork to

Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Attaching Downflow Ductwork to

Roof Frame. . . . . . . . . . . . . . . . . . . . . . . . . . 17

Gas Piping Installation. . . . . . . . . . . . . . . . 18

Air Filter Installation . . . . . . . . . . . . . . . . . . . . . 21

Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . 22

Unit Startup . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . 24

Pre-Start Quick Checklist . . . . . . . . . . . . . . . . . 24

Starting the Unit in Cooling Mode. . . . . . . . . 24

Starting the Unit in Heating Mode. . . . . . . . . 24

Sequence of Operation. . . . . . . . . . . . . . . . . . . 25

Final Installation Checklist . . . . . . . . . . . . 26

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Service Maintenance . . . . . . . . . . . . . . . . . 26

Pressure Curves . . . . . . . . . . . . . . . . . . . . . . . . . 29

Indoor Fan Performance. . . . . . . . . . . . . . . . . . 35

Refrigerant Circuit . . . . . . . . . . . . . . . . . . . . . . . 41

Troubleshooting Chart . . . . . . . . . . . . . . . . . . . 42

Important Product Information . . . . . . . . . 44

18-EB40D1-1A-EN

Page 4

Introduction, Unit Inspection and Specification

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. DO NOT use this furnace for temporary heating of buildings under construction.

As shipped from the factory, this unit is for use with natural gas only. It is listed by Underwriters Laboratory. An LPG conversion kit is available. A high altitude installation kit of additional orifice sizes is available. Extreme mounting kits for slab and curbs are also available.

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 or National Fuel Gas Code (ANSI-Z223.1A) Latest Revision. Since these units are designed exclusively for outdoor operation, additional flue venting systems are not required. 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.

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.

IImmppoorrttaanntt:: To prevent damage to the sides and top

of the unit when hoisting, use “spreader bars” see, “Rooftop

Installation — No Curb/Frame,” p. 15

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. The Flue Hood is included with the unit’s literature pack.

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

• 4YCC4024–4036 use model BAYCURB050A

• 4YCC4042–4060 use model BAYCURB051A

6. If the unit is being hoisted, accessory kit BAYLIFT002B is recommended. It includes a kit of four (4) lifting lugs and instructions.

NNootteess::

• 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”.

18-EB40D1-1A-EN

Page 5

IInnttrroodduuccttiioonn,, UUnniitt IInnssppeeccttiioonn aanndd SSppeecciiffiiccaattiioonn

Product Specifications

MODEL 4YCC4024*1 4YCC4030*1

RATED Volts/PH/Hz 208–230/1/60 Performance Cooling BTUH Indoor Airflow (CFM) Power Input (KW)

(a)

23200 28000 36400

785 880 1215

1.94 2.21 3.17 EER2/SEER2 BTU/Watt-Hr 11.00 / 13.40 Sound Power Rating [dB(A)]

PERFORMANCE HEATING

Input BTUH-1st Stage (Natural Gas)

(b)

(c)

(d)

66.6 70 69.3

LOCATED ON UNIT NAMEPLATE

AFUE 81 Temp. Rise -min/max (°F)

30/60 30/60 Orifice Qty/drill size (Nat Gas) 2 / #37 2 / #33 2 / #33 [3 / #37] POWER CONN. — V/Ph/Hz 208–230/1/60 Min. Brch. Cir. Ampacity Fuse Size — Max. (amps) Fuse Size — Recmd. (amps)

(e)

LOCATED ON UNIT NAMEPLATE LOCATED ON UNIT NAMEPLATE LOCATED ON UNIT NAMEPLATE

COMPRESSOR SCROLL

VOLTS/PH/HZ 208–230/1/60 R.L. Amps — L.R. Amps

LOCATED ON UNIT NAMEPLATE

OUTDOOR COIL — TYPE SPINE FIN

Rows/F.P.I 2 / 24 Face Area (sq. ft.) Tube Size (in.)

13.2 13.3 15.5 3/8

INDOOR COIL — TYPE MCHE Rows/F.P.I 2/16 2/16 2/16 Face Area (sq. ft.)

Tube Size (in.) Refrigeration Control Drain Conn. Size (in.)

OUTDOOR FAN — TYPE

DIA. (IN.)

2.7 2.7 2.7

0.81 0.81 1

EXPANSION VALVE

3/4 FEMALE NPT

Swept

23.4 DRIVE/NO. SPEEDS DIRECT / 1 CFM @ 0.0 in. w.g.

(f)

2350 2800 3080 Motor — HP/R.P.M 1/12 / 810 1/6 / 825 1/5 /825 Volts/Ph/Hz 208–230/1/60 F.L. Amps/L.R Amps

INDOOR FAN — TYPE

Dia. x Width (in.) Drive/No. Speeds CFM @ 0.0 in. w.g.

(g)

LOCATED ON UNIT NAMEPLATE

Const. Torque ECM

10.62 x 10.62 DIRECT / 4

SEE FAN PERFORMANCE TABLE Motor — HP / R.P.M. 1/3 / 1050 1/2 / 1050 3/4 / 1050 Volts/Ph/Hz 208–230/1/60

COMBUSTION FAN-TYPE

Drive / no. Speeds

Centrifugal

Direct 1 Motor- HP / R.P.M. 1/34 /3345 1/34 /3290 1/34 /3290 F.L. Amps

FILTER / FURNISHED

Type Recommended Recmd. Face Area (sq. ft)

(h)

4.0 4.0 4.0

LOCATED ON UNIT NAMEPLATE

THROWAWAY

REFRIGERANT R-410 Charge (lbs.)

Subcooling

(a)

Rated in accordance with AHRI Standard 210/240. AHRI standard rating conditions are: 80 D.B.67 W.B. entering air to indoor coil. 95 D. B. entering air to outdoor coil.

(b)

Sound Power values are not adjusted for AHRI 270–95 tonal corrections.

(c)

Ratings shown are for elevations up to 2000 ft. For higher elevations reduce ratings at a rate of 4% per 1000 ft. elevation.

(d)

Convertible to LPG.

(e)

This value is approximate. For more precise value, see Unit Nameplate.

(f)

Standard Air — Dry Coil — Outdoor.

(g)

Based on U.S. Government Standard Tests.

(h)

Filters must be installed in return air stream. Square footages listed are based on 300 f.p.m. face velocity. If permanent filters are used size per manufacturer’s recommendation with a clean resistance of 0.05” W.C.

10° 8° 11°

LOCATED ON UNIT NAMEPLATE

4YCC4036*1070

[4YCC4036*1090]

30/60 [35/65]

18-EB40D1-1A-EN

Page 6

IInnttrroodduuccttiioonn,, UUnniitt IInnssppeeccttiioonn aanndd SSppeecciiffiiccaattiioonn

MODEL

4YCC4042*1060

[4YCC4042*1090]

4YCC4048*1070

[4YCC4048*1090]

4YCC4060A*1090

[4YCC4060A*1115]

RATED Volts/PH/Hz 208–230/1/60 Performance Cooling BTUH

Indoor Airflow (CFM)

Power Input (KW)

(a)

40000 46000 57500

1450 1625 1770

3.53 4.20 4.98 EER2/SEER2 BTU/Watt-Hr 11.00 / 13.40 10.80 / 13.40 11.00 / 13.40 Sound Power Rating [dB(A)]

PERFORMANCE HEATING

Input BTUH-1st Stage (Natural Gas)

(b)

(c)

(d)

74.6 72.5 73.1

LOCATED ON UNIT NAMEPLATE

AFUE 81 Temp. Rise -min/max (°F) 30/60 [35/65] 30/60 [35/65] 30 / 60

Orifice Qty/drill size (Nat Gas) 2 / #33 [3 / #37] 2 / #33 [3 / #37] 3 / #37 [3 / #33]

POWER CONN. — V/Ph/Hz 208–230/1/60 Min. Brch. Cir. Ampacity Fuse Size — Max. (amps)

Fuse Size — Recmd. (amps)

(e)

LOCATED ON UNIT NAMEPLATE

LOCATED ON UNIT NAMEPLATE LOCATED ON UNIT NAMEPLATE

COMPRESSOR SCROLL

VOLTS/PH/HZ 208–230/1/60 R.L. Amps — L.R. Amps

LOCATED ON UNIT NAMEPLATE

OUTDOOR COIL — TYPE SPINE FIN

Rows/F.P.I 2 / 24 Face Area (sq. ft.) Tube Size (in.)

15.6 20.5 23.0

3/8

INDOOR COIL — TYPE MCHE Plate Fin Rows/F.P.I 2 / 16 2 / 16 4 / 15 Face Area (sq. ft.)

Tube Size (in.)

Refrigeration Control

Drain Conn. Size (in.)

OUTDOOR FAN — TYPE

DIA. (IN.)

3.9 3.9 5.0

0.81 0.81

EXPANSION VALVE

3/4 FEMALE NPT

Swept

28.5

3/8

DRIVE/NO. SPEEDS DIRECT / 1 CFM @ 0.0 in. w.g.

(f)

3400 4800 4800 Motor — HP/R.P.M 1/4 / 825 1/4 / 825 1/3/825 Volts/Ph/Hz 208–230/1/60 F.L. Amps/L.R Amps

INDOOR FAN — TYPE

Dia. x Width (in.)

Drive/No. Speeds CFM @ 0.0 in. w.g.

(g)

DIRECT / 4 DIRECT / 5 DIRECT / 4

LOCATED ON UNIT NAMEPLATE

Const. Torque ECM

10.62 x 10.62 11.87 x 10.68

SEE FAN PERFORMANCE TABLE Motor — HP / R.P.M. 3/4 /1050 3/4 /1050 1 / 1050 Volts/Ph/Hz 208–230/1/60

COMBUSTION FAN-TYPE

Drive / no. Speeds

Centrifugal

Direct 1 Motor- HP / R.P.M. 1/34 / 3345 1/34 /3290 1/34 / 3075 [1 /34 / 3055] F.L. Amps

FILTER / FURNISHED

Type Recommended

Recmd. Face Area (sq. ft)

(h)

5.3 5.3 5.3

LOCATED ON UNIT NAMEPLATE

THROWAWAY

REFRIGERANT R-410 Charge (lbs.)

Subcooling

(a)

Rated in accordance with AHRI Standard 210/240. AHRI standard rating conditions are: 80 D.B.67 W.B. entering air to indoor coil. 95 D. B. entering air to outdoor coil.

(b)

Sound Power values are not adjusted for AHRI 270–95 tonal corrections.

(c)

Ratings shown are for elevations up to 2000 ft. For higher elevations reduce ratings at a rate of 4% per 1000 ft. elevation.

(d)

Convertible to LPG.

(e)

This value is approximate. For more precise value, see Unit Nameplate.

(f)

Standard Air — Dry Coil — Outdoor.

(g)

Based on U.S. Government Standard Tests.

(h)

10° 10° 11°

LOCATED ON UNIT NAMEPLATE

18-EB40D1-1A-EN

Page 7

IInnttrroodduuccttiioonn,, UUnniitt IInnssppeeccttiioonn aanndd SSppeecciiffiiccaattiioonn

Charging in Cooling above 55°F OD Ambient

If servicing the equipment requires system evacuation, then re-charge the system to the weight specified on the nameplate. Verify the system subcooling using the Subcooling Charging Table and, if necessary, adjust the charge using the procedure below.

1. For best results — the indoor temperature should be kept between 70°F to 80°F. Add system heat if needed.

2. Whenever charge is removed or added, the system must be operated for a minimum of 20 minutes to stabilize before accurate measurements can be made.

3. Measure Liquid Line Temperature and Refrigerant Pressure at service valved in the compressor compartment.

pressure under the subcool value column, Add refrigerant to raise the pressure to match the table, or remove refrigerant to lower the pressure. Again, wait 20 minutes for the system conditions to stabilize before adjusting charge again.

NNoottee:: System charge shall never be more than 110% or

less than 90% of nameplate charge. If specified subcooling cannot be achieved within those charge bounds, contact your Field Service Representative.

5. When system is correctly charged, you can refer to System Pressure Curves to verify typical performance.

CCHHAARRGGIINNGG BBEELLOOWW 5555°°FF

Evacuate system and weigh in nameplate charge or use factory charge. Correct subcooling may be verified when the temperature is above 55°F.

4. Locate your liquid line temperature in the left column of the table, and the intersecting liquid line

Refer to Service Facts or Installer’s Guide for charging method

LIQUID

TEMP

(°F)

55 174 179 182 185 188 191 195 198 205

60 189 195 198 201 204 208 211 215 222

65 205 211 215 218 222 225 229 232 240

70 222 229 232 236 240 243 247 251 259

75 240 247 251 255 259 263 267 271 279

80 259 267 271 275 279 283 287 291 301

85 279 287 291 296 300 304 309 313 323

90 301 309 313 318 322 327 331 336 347

95 323 331 336 341 346 351 355 360 371

100 347 355 360 365 370 376 381 386 398

105 371 381 386 391 396 402 407 413 425

110 398 407 413 418 424 429 435 441 454

115 425 435 441 446 452 458 464 470 484

120 454 464 470 476 482 488 495 501 516

125 484 495 501 507 514 520 527 533 549

From Dwg. D154557P01

6 8 9 10 11 12 13 14 16

R-410A REFRIGERANT CHARGING CHART

DESIGN SUBCOOLING (°F)

LIQUID GAGE PRESSURE (PSI)

18-EB40D1-1A-EN

Page 8

Determine Unit Clearances

Note: The view labeled “Bottom side” represents the base as viewed looking up from underneath the unit.

W/ ECONOMIZER W / ECONOMIZER BACK SIDE 305 [12] 762 [30] 305 [12] 762 [30] LEFT SIDE 762 [30] 914 [36] 914 [36] 1067 [42] RIGHT SIDE 610 [24] - 610 [24] FRONT SIDE 1067 [42] - 762 [30] -

BOTTOM BACK SIDE LEFT SIDE RIGHT SIDE FRONT SIDE TOP

A HEIGHT OF UNIT - TABLE NEXT PAGE BB CENTER OF GRAVITY - TAB LE NEXT PAGE CC CENTER OF GRAVITY - TABLE NEXT PAGE DD -Depth EE -Width FF

25 [1]

DIMENSIONS mm [Inches]

2 - 3 TON Units 3.5 - 5 TON Units

RECOMMENDED SERVI CE CLEARANCE mm [Inches]

CLEARANCE TO COMBUSTI BLE MATERIAL mm [Inches]

2 - 3 TON 3.5 - 5 TON

152 [6] 152 [6] 305 [12] 914 [36]

1049.02 [41-5/16]

1240.28 [48.27-27/32]

152 [6] 152 [6] 305 [12] 914 [36]

475.23 [18-23/32]

1125.22 [44-5/16]

1487.17 [58-9/16]

551.43 [21-23/32]

Figure 1. Space on Sides Requirements

18-EB40D1-1A-EN

Page 9

B C D E F G H I J K L M N

4YCC4024

4YCC4030 4YCC4036

4YCC4042

4YCC4048 4YCC4060

PHYSICAL DIMENSIONS mm [In]

304.80 [12]

75.41 [2.93]

406.40 [16]

167.89

[6.61]

173.46

[6-27/32]

304.80 [12]

79.50 [3.13]

398.22 [15.68]

176.07 [6.93]

177.55 [6.99]

296.62

[11.68]

1155.45 [45.49]

457.20

[18]

75.41 [2.97]

381.00

[15]

322.84 [12.71]

372.82 [14.68]

1402.34 [55.21]

244.09 [9.61]

318.75

[12.55]

381.00

[15]

79.50 [3.13]

449.02

[17.68]

176.07 [6.93]

W1 W2 W3 W4 BB CC

4YCC4024* (060) 58 [129] 37 [81]

26 [58] 41 [90] 196 [432] 162 [358] 480 [19] 528 [21]

4YCC4030* (070) 61 [135] 39 [85]

28 [61] 43 [95] 205 [451] 171 [377] 407 [16] 594 [23]

4YCC4036* (070) 61 [134] 39 [84]

28 [60] 43 [95] 205 [438] 171 [374] 407 [16] 594 [28]

4YCC4036* (090) 61 [136] 39 [86]

4YCC4042*(060) 71 [157] 47 [103]

35 [76] 53 [117] 252 [555] 202 [202] 470 [19] 731 [29]

4YCC4042*(090) 72 [158] 47 [104]

35 [78] 54 [118] 255 [561] 207 [202] 470 [19] 731 [29]

4YCC4048*(070) 71 [157] 45 [98]

33 [73] 54 [119] 250 [552] 202 [448] 433 [17] 743 [29]

4YCC4048*(090) 72 [159] 45 [99]

34 [75] 55 [120] 253 [557] 205 [453] 433 [17] 743 [29]

4YCC4060*(090) 77 [170] 46 [101]

35 [76] 58 [128] 263 [580] 216 [476] 433 [17] 743 [29]

4YCC4060*(115) 78 [172] 46 [102]

35 [77] 59 [130] 266 [586] 219 [482] 414 [16] 635 [25]

Corner Weights

KG/LBS

SHIPPING

WEIGHT KG/LBS

UNIT WEIGHT KG/LBS

Center Of Gra vity

mm [inch]

HEIGHT-A

mm [inch]

898.53 [35-3/8]

949.33 [37-3/8]

898.53 [35-3/8]

1000.13 [35-3/8]

28 [61] 43 [96]

205 [453] 171 [379] 407 [16] 594 [28]

DDeetteerrmmiinnee UUnniitt CClleeaarraanncceess

Figure 2. Bottom and Back Duct Openings

18-EB40D1-1A-EN

Page 10

Review Location and Recommendation Information

NNootteess::

• The unit is shipped for horizontal installation.

• During heating operation, avoid supply air below 80 degrees F or return air below 50 degrees F to prevent flue gas condensation.

HHoorriizzoonnttaall AAiirrffllooww UUnniittss

1. Location of the unit must allow service clearance around it to ensure adequate serviceability, maximum capacity, and peak operating efficiency.

2. These units are designed for outdoor installation. They may be installed directly on a slab, wood flooring, or on Class A, B, or C roof covering material. The discharge air from the condenser fans must be unrestricted for a minimum of 3 feet above the unit.

3. The louvers above and below the flue hood in the side panel must have adequate clearance around the air opening into the combustion area.

4. Examine all flue product-carrying areas of the furnace, its vent system, and the main burner for safe operation.

IImmppoorrttaanntt:: A minimum clearance of 0.0” to

combustible material shall be maintained on air outlet duct.

5. Exhaust vents or other sources of contaminated air must not be near the unit’s air inlet if outside air is to be introduced as make-up air or a ventilation feature is to be used. Contamination from exhaust vents or chimneys may also foul the condenser causing degraded performance.

6. Check the handling facilities to ensure the safety of personnel and the unit(s).

7. The unit must be mounted level for proper drainage of water through the drain holes in the base pan.

8. The unit should not be exposed to direct roof water runoff.

9. Flexible duct connectors must be of a flame retardant material. All duct work outside of the structure must be insulated and weatherproofed in accordance with local codes.

10. Holes through exterior walls or roof must be sealed in accordance with local codes.

11. All fabricated outdoor ducts should be as short as possible.

CClleeaarraanncceess

1. The recommended clearances for single-unit installations are illustrated in “ Determine Unit

Clearances,” p. 8.

2. Any reduction of the unit clearances indicated in these figures may result in condenser coil starvation or the recirculation of warm condenser air. Actual clearances, which appear to be

inadequate should be reviewed with a local engineer.

3. See the unit’s nameplate for the absolute minimum clearance between the unit and any combustible surfaces.

DDoowwnn AAiirrffllooww UUnniittss

1. Location of the unit must allow service clearance around it to ensure adequate 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 assembled Roof Mounting Curb (BAYCURB050A or BAYCURB051A) or a field fabricated curb should be in place before the unit is hoisted to the roof top. The Roof Mounting Curb (frame) must be installed on a flat, level section of the roof (maximum of 1/4" per foot pitch) and provide a level mounting surface for the unit. Also, be sure to provide sufficient height above the roof to prevent water from entering the unit.

4. Be sure the mounting curb spans structural members (trusses) of the roof, thereby providing sufficient support for the weight of the unit, the curb, the duct(s), and any factory or field installed accessories.

5. The unit must be mounted level for proper drainage of water through the drain holes in the base pan.

6. Be sure the hole in the structure for the ducts is large enough to accommodate the fabricated ducts and the insulation surrounding them. Flexible duct connectors must be of a flame retardant material. All duct work outside of the structure must be insulated and weatherproofed in accordance with local codes.

7. Holes through exterior walls or roof must be sealed in accordance with local codes.

8. These units are design certified for outdoor installation. They may be installed directly on a slab, wood flooring, or on Class A, B, or C roof covering material. The discharge air from the condenser fans must be unrestricted for a minimum of 3 feet above the unit.

9. The louvers above and below the flue hood in the side panel must have adequate clearance around the air opening into the combustion area.

10. Examine all flue product-carrying areas of the furnace, its vent system, and the main burner for safe operation.

IImmppoorrttaanntt:: A minimum clearance of 0.0” to

combustible material shall be maintained on air outlet duct.

18-EB40D1-1A-EN

Page 11

RReevviieeww LLooccaattiioonn aanndd RReeccoommmmeennddaattiioonn IInnffoorrmmaattiioonn

11. Exhaust vents or other sources of contaminated air should not be near the unit’s air inlet if outside air is to be introduced as make-up air or a ventilation feature is to be used. Contamination from exhaust vents or chimneys may also foul the condenser causing degraded performance.

12. Check the handling facilities to ensure the safety of personnel and the unit(s).

CClleeaarraanncceess

1. The recommended clearances for single-unit installations are illustrated in “ Determine Unit

Clearances,” p. 8.

2. Any reduction of the unit clearances indicated in these figures may result in condenser coil starvation or the recirculation of warm condenser air. Actual clearances, which appear to be inadequate should be reviewed with a local engineer.

3. See the unit’s nameplate for the absolute minimum clearance between the unit and any combustible surfaces.

18-EB40D1-1A-EN

Page 12

Unit Installation

NNoottee:: The factory ships this unit for horizontal

installation.

Install Flue Hood

1. Locate the Flue Hood in the literature package.

2. Remove the two Flue Hood mounting screws from the unit. They are located to the right of the Power Entry connection panel.

3. Attach the Flue Hood to the unit with the two screws removed in step two.

Ground Level Installation

1. Place the unit on a pad the size of the unit or larger. The unit must be mounted level for proper drainage of water through the holes in the base pan. To attach the unit securely to the slab, use extreme mounting kit, BAYEXMK003A.

The pad must not come in contact with the structure. Be sure the outdoor portion of the supply and return air ducts are as short as possible.

Unit requires vibration support as indicated in Table

3, p. 14

2. The louvers above and below the Flue Hood in the side panel must have adequate clearance around the air opening into the combustion area.

3. Location of the unit must allow service clearance around it. Clearance of the unit must be given careful consideration. See “ Determine Unit

Clearances,” p. 8

NNoottee:: Any reduction of the unit clearances indicated in

these illustrations may result in condenser coil starvation or the recirculation of warm condenser air. Actual clearances, which appear to be inadequate should be reviewed with a local engineer.

IImmppoorrttaanntt:: A minimum clearance of 0.0" to

combustible material shall be maintained on air outlet duct.

4. Attach the supply and return air ducts to the unit as explained in the Ductwork Installation section.

5. Flexible duct connectors must be of a flame retardant material. Insulate any ductwork outside of the structure with at least two (2) inches of insulation and weatherproof. There must be a weatherproof seal where the duct enters the structure.

6. Do not expose the unit to direct roof water runoff.

7. Seal all holes through exterior walls in accordance with local codes.

8. Continue with the following installation sections to complete the installation: Ductwork, Gas Piping, Filter and Electrical Wiring.

Rooftop Installation—Curb Mounting

CCoonnvveerrtt HHoorriizzoonnttaall AAiirrffllooww ttoo DDoowwnn AAiirrffllooww

The factory ships the unit for horizontal airflow. Perform this procedure to convert it to down airflow:

1. Remove the three (3) sheet metal screws securing the supply air cover and the four (4) sheet metal screws securing the return air cover from the base of the unit. Remove the covers from the base.

2. Place the covers over the horizontal supply and return openings (painted side out). Align the screw holes, and secure using the same screws removed in step 1.

IInnssttaallll FFuullll PPeerriimmeetteerr RRooooff MMoouunnttiinngg CCuurrbb

1. Verify that the roof mounting curb is correct for the unit. There are two curbs depending on the unit cabinet sizes:

• 4YCC4024–036 use model BAYCURB050A

• 4YCC4042–060 use model BAYCURB051A

2. Assemble and install the curb following the instructions in the Installer's Guide included with the appropriate curb.

18-EB40D1-1A-EN

Page 13

Table 1. Typical Ground Level Application

SIDING

RETURN AIR DUCT

SUPPLY AIR DUCT

EXTERIOR WALL

INSULATE WEATHERPROOF OR RAIN SHIELD

FLEXIBLE DUCT CONNECTORS

OUTDOOR AIR DISCHARGE

SUPPORT PAD FOUNDATION

3/4” VIBRATION ISOLATORS, USE 7 ISOLATORS

Note: Use the extreme mounting kit, BAYEXMK003AA, to secure the unit to the slab.

UUnniitt IInnssttaallllaattiioonn

Table 2. Converting Horizontal to Down Airflow

Lifting and Rigging

WWAARRNNIINNGG

IIMMPPRROOPPEERR UUNNIITT LLIIFFTT!!

FFaaiilluurree ttoo pprrooppeerrllyy lliifftt uunniitt ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy oorr ppoossssiibbllee eeqquuiippmmeenntt oorr pprrooppeerrttyy-oonnllyy ddaammaaggee.. TTeesstt lliifftt uunniitt aapppprrooxxiimmaatteellyy 2244 iinncchheess ttoo vveerriiffyy pprrooppeerr cceenntteerr ooff ggrraavviittyy lliifftt ppooiinntt.. TToo aavvooiidd ddrrooppppiinngg ooff uunniitt,, rreeppoossiittiioonn lliiffttiinngg ppooiinntt iiff uunniitt iiss nnoott lleevveell..

IImmppoorrttaanntt:: Do not lift the unit without test lifting for

balance and rigging. Do not lift the unit in windy conditions or above personnel. Do not lift the unit by attaching clevis, hooks, pins, or bolts to the unit casing, casing hardware, corner lugs, angles, tabs, or flanges. Failure to observe these warnings may result in equipment damage.

1. Before preparing the unit for lifting, check the unit dimension drawings for center of gravity for lifting safety (“ Determine Unit Clearances,” p. 8). Because of placement of internal components, the unit’s weight may be unevenly distributed.

18-EB40D1-1A-EN

Page 14

Small Cabinet ****4024 - 4036

Medium Cabinet ****4042 - 4060

UUnniitt IInnssttaallllaattiioonn

Approximate unit weights are also provided in the unit drawings.

NNoottee:: Unit rigging and hoisting requires accessory

kit BAYLIFT002BA. It includes a kit of four (4) lifting lugs.

2. Insert the four lifting lugs in the openings provided in the drip lip on each end of the unit. A tap or jerk to the lug will overcome the interference that arises due to the dimple on the lug.

3. When hoisting the unit, be sure that a proper method of rigging is used. Use slings and spreader bars for protection during lifting. Always test-lift the unit to determine the exact unit balance and stability before hoisting it to the installation location.

4. When the curb and air ducts have been properly installed, the unit is ready to be hoisted to the roof and set in position.

Table 3. Vibration Isolators/Snow Feet Locations

IImmppoorrttaanntt::

• To prevent damage to the sides and top of the unit when hoisting use “spreader bars”.

• The unit must be lowered into position. The P.V.C. rubber tape on the curb flange permits the unit to be repositioned if required without destroying the P.V.C. rubber seals affixed to the mounting curb.

PPllaacciinngg tthhee UUnniitt oonn tthhee MMoouunnttiinngg CCuurrbb

1. The unit is designed with a perimeter drip lip that is lower than the unit base pan, see Table 4, p. 15.

2. Position the unit drip lip down over and in contact with the outside corner of the curb.. Continue to lower the unit on top of the curb, with the unit drip lip astraddle, and in contact with, both the end and side rail of the curb. The unit should now rest on top of the curb. Use the extreme mounting kit, BAYEXMK001A, to add additional hold down strength to the mounting.

NNoottee:: The ductwork is installed as part of the curb

installation. Do not attach ductwork to the unit and lower the unit with ductwork onto the curb.

Note: These views represent the base as

viewed looking up from underneath the unit.

Important: Unit requires vibration isolator

support in the general areas shown. Locate 3/4" thick vibration isolators on the bottom of the basepan as illustrated by black dots for ground level pad applications. Modify vibration isolator location as necessary for frame and rail applications.

Rooftop Installation — Frame Mounting

For rooftop applications using field fabricated frame and ducts use the following procedure:

1. Locate and secure the frame to the roof by bolting or welding. Frame must provide adequate center support via a cross member centrally located channel rail. See Table 7, p. 17. Vibration isolators should be installed as indicated in Table 3, p. 14, adjust as necessary for your frame. The isolators must be placed on base pan, not drip lip. Add flashing as required. Flashing must conform to local building codes.

2. Prepare the hole in the roof in advance of installing the unit.

3. Secure the horizontal or down airflow ducts to the roof. Refer to the previous Convert from Horizontal Airflow to Down Airflow section if conversion is needed.

4. All fabricated outdoor ducts should be as short as possible.

5. Place the unit on the frame.

6. The unit must be mounted level for proper drainage of water through the holes in the base pan.

7. Secure the unit to the frame.

8. Insulate any ductwork outside of the structure with at least two (2) inches of insulation and then weatherproof. There must be a weatherproof seal where the duct enters the structure.

18-EB40D1-1A-EN

Page 15

Base of unit rest on top of curb rails

Drip lip on perimeter of unit

Spreader Bars

Gasket Seal

Drip Lip

Dimple

BAYLIFT002A Lifting Lugs

UUnniitt IInnssttaallllaattiioonn

9. The unit should not be exposed to direct roof water runoff.

10. Flexible duct connectors must be of a flame retardant material. All duct work outside of the structure must be insulated 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.“ Determine Unit

Clearances,” p. 8 provide unit dimensions.

12. Continue with the following installation sections to complete the installation: Ductwork, Filter, and Electrical Wiring.

Rooftop Installation — No Curb/ Frame

For roof top applications using field fabricated ducts and sleeper rails rather than a curb or frame, use the following procedure:

1. Locate and secure the sleeper rails to the roof by bolting (three (3) rails required). One on each end to support the edges of the unit and one across the center of the unit. The center rail must run inside both drip lips. Vibration isolators should be installed, adjust as necessary for your sleeper rails. The isolators must be placed on base pan, not drip lip. Add flashing as required. Flashing must conform to local building codes.

2. Prepare the hole in the roof in advance of installing the unit.

3. Secure the horizontal or down airflow ducts to the roof. Refer to the previous Convert from Horizontal Airflow to Down Airflow section if conversion is needed.

4. All fabricated outdoor ducts should be as short as possible.

5. Place the unit on the rails.

6. The unit must be mounted level for proper drainage of water through the holes in the base pan.

7. Secure the unit to the rails.

8. Insulate any ductwork outside of the structure with at least two (2) inches of insulation and then weatherproof. There must be a weatherproof seal where the duct enters the structure.

9. No exposure to direct roof water runoff.

10. Flexible duct connectors must be of a flame retardant material. All duct work outside of the structure must be insulated 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. “ Determine Unit

Clearances,” p. 8 provide unit dimensions.

12. Continue with the following installation sections: Ductwork, Filter and Electrical Wiring.

Table 4. Lifting and Rigging

18-EB40D1-1A-EN

Page 16

Supply Air

Return Air

Roof Flashing

Channel Iron Center Support (Center Support required on all frame applications).

Angle Iron Frame

UUnniitt IInnssttaallllaattiioonn

Table 5. Curb Dimensions

This drawing was prepared by the manufacturer in order to provide detail regarding job layout only. This drawing is not intended to be used as a basis to construct, build or modify the item depicted in the drawing. The manufacturer is not responsible for the unauthorized use of this drawing and expressly disclaims any liability for damages resulting from such unauthorized use.

Table 6. Typical Rooftop Horizontal Airflow Application with Frame

18-EB40D1-1A-EN

Page 17

Table 7. Typical Rooftop Down Airflow Application with Frame

Return Air

Roof Flashing

Channel Iron Center Support (center support required on all frame applications).

Angle Iron Frame

Roof Flashing

Supply Air

FIELD DUCT

UNIT DUCT

FLANGE

UNIT BASE

AIR PROOF THIS SEAM

FIELD DUCT

UNIT DUCT

FLANGE

UNIT BASE

AIR PROOF THIS SEAM

FIELD DUCT

UNIT DUCT FLANGE

UNIT BASE

AIR PROOF THIS SEAM

FIELD DUCT

UNIT DUCT

FLANGE

UNIT BASE

NOT RECOMMENDED

WATERPROOF SEAM

WITH BUTYL OR

SILICONE

UUnniitt IInnssttaallllaattiioonn

Ductwork Installation

Attaching Downflow Ductwork to Roof Curb

Supply and return air flanges are provided on the roof curb for easy duct installation. All ductwork must be run and attached to the curb before the unit is set into place.

Attaching Downflow Ductwork to Roof Frame

Follow 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 splitters are recommended to minimize air noise and resistance.

The first elbow in the ductwork leaving the unit should be no closer than two (2) feet from the unit, to minimize noise and resistance.

To prevent leaking, do not attach the ductwork to the bottom of the unit base. Refer to the bottom example in the figure below.

Figure 3. Attaching Down Airflow Ductwork

18-EB40D1-1A-EN

Page 18

FIELD DUCT

UNIT EXTERIOR

WEATHERPROOF

THIS SEAM

FIELD DUCT

UNIT EXTERIOR

WEATHERPROOF

THIS SEAM

/4" PVC OR COPPER

TUBING AND FITTINGS

1-1/2" MIN.

Furnace Input in BTUH

Gas Heat Contne in BTU/Cu. Ft. X Multiplier

CFH =

UUnniitt IInnssttaallllaattiioonn

Attaching Horizontal Ductwork to Unit

All conditioned air ductwork should be insulated to minimize heating and cooling duct losses. Use a minimum of two (2) inches of insulation with a vapor barrier. The outside ductwork must be weatherproofed between the unit and the building.

When attaching ductwork to a horizontal unit, provide a flexible watertight connection to prevent noise transmission from the unit to the ducts. The flexible connection mmuusstt be indoors and made out of heavy canvas.

NNoottee:: Do not draw the canvas taut between the solid

ducts.

Figure 4. Attaching Horizontal Airflow Ductwork

Condensate Drain Piping

A 3/4-inch female NPT condensate drain connection is provided on the evaporator access panel end of the unit. Provide a trap and fill it with water before starting the unit to avoid air from being drawn through. Follow local codes and standard piping practices when running the drain line. Pitch the line downward away from the unit. Avoid long horizontal runs. See Figure

5, p. 18.

NNoottee:: Do not use reducing fittings in the drain lines.

The condensate drain must be:

• Made of 3/4” pipe size

• Pitched 1/4” per foot to provide free drainage to convenient drain system

• Trapped

• Must be connected to a closed drain system unless the trap is properly vented

Figure 5. Typical Condensate Drain Piping

Gas Piping Installation

WWAARRNNIINNGG

FFIIRREE OORR EEXXPPLLOOSSIIOONN HHAAZZAARRDD!!

FFaaiilluurree ttoo ffoollllooww tthhee ssaaffeettyy wwaarrnniinngg eexxaaccttllyy ccoouulldd rreessuulltt iinn sseerriioouuss iinnjjuurryy,, ddeeaatthh,, oorr pprrooppeerrttyy ddaammaaggee.. UUssee aa ccoommmmeerrcciiaallllyy aavvaaiillaabbllee ssooaapp ssoolluuttiioonn mmaaddee ssppeecciiffiiccaallllyy ffoorr tthhee ddeetteeccttiioonn ooff lleeaakkss ttoo cchheecckk aallll ccoonnnneeccttiioonnss..

IImmppoorrttaanntt:: Before making the gas pipe connection,

give serious consideration to providing the clearance necessary to remove the access panels on the unit (e.g., economizer and filter access panels).

NNoottee:: In the absence of local codes, the installation

must conform with American National Standard– Z223.1–National Fuel Gas Code, Latest Revision.

The available gas supply must agree with the required gas supply marked on the unit nameplate. Minimum permissible gas supply pressure for purpose of input adjustment must be at least 7.0 in. w. c. (inches water column) for natural gas and 11 in. w. c. for LP Gas.

PPiippee DDeelliivveerryy SScchheedduullee

NNoottee:: The following procedure and tables apply to

Natural Gas oonnllyy.

1. Obtain from the gas company the heating value and specific gravity of the gas delivered.

2. Determine the exact length of pipe needed.

3. Read BTUH input nameplate on the furnace.

4. Use the multiplier opposite the specific gravity of the gas given in Multiplier Table and insert in the following formula:

5. Use the Natural Gas Only table and select the pipe length nearest to calculated size.

6. Follow this line vertically down to the exact CFH found in Step 4 above or the next highest value.

7. Read horizontally to the left of this column for the required pipe size diameter.

Table 8. Specific Gravity Multiplier

SPECIFIC

GRAVITY

.50 1.10

MULTIPLIERS TO BE USED

WHEN THE SPECIFIC GRAVITY

OF THE GAS IS OTHER THAN

0.060

.55 1.04

.60 1.00

.65 .962

NNoottee:: If this is an LP Gas application, consult your LP

Gas supplier for pipe sizes and deliveries.

MULTIPLIER

18-EB40D1-1A-EN

Page 19

DEALER INSTALLED

GROUND UNION

1/8" N.P.T.PLUGGED

ACCESS FOR TEST

GAUGE CONNECTION

FROM

GAS SUPPLY

FIELD SUPPLIED MAIN

GAS VALVE, MUST BE

INSTALLED BY DEALER

OUTSIDE OF UNIT.

UNIT

TO MAIN

CONTROL

VALVE

MIN

DRIP LEG (6" MIN)

UUnniitt IInnssttaallllaattiioonn

Table 9. Natural Gas Only

TABLE OF CUBIC FEET PER HOUR OF GAS FOR VARIOUS

PIPE SIZE

(inch)

1–1/4

THIS TABLE IS BASED ON PRESSURE DROP OF 0.3 INCH W.C. AND 0.6 SP.GR. GAS

GGaass PPrreessssuurree SSeett--uupp PPrreeccaauuttiioonnss

IImmppoorrttaanntt:: Do not connect gas piping to the unit until a

The furnace must be isolated from the gas supply piping system by closing its individual manual shut-off valve during any pressure testing of the gas supply piping system at test pressures less than or equal to 1/2 psig (3.48 kPa).

GGaass SSuuppppllyy LLiinnee PPrreessssuurree

Before connecting the unit to the gas supply line, be sure to determine the gas pressure in the line.

If the gas supply pressure is excessive (above 14 inches water column or 1/2 psig), install a pressure regulator either at the supply source or in the branch circuit serving the unit. Once the regulator is installed, set it to provide a pressure of 7 inches water column with the unit operating and no greater than 14 inches water column with the unit not firing.

NNoottee:: Gas pressure in excess of 14 inches water

If the supply line pressure is below the minimum supply pressure indicated on the unit nameplate, contact the gas supply company.

Follow these steps to complete the installation of the unit gas piping. See Table 10, p. 19.

NNoottee:: The shut-off gas cock must be installed outside

18-EB40D1-1A-EN

PIPE SIZES AND LENGTHS

10 20 30 40 50 60 70

1/2

3/4

1 520 350 285 245 215 195 180

132 92 73 63 56 50 46

278 190 152 130 115 105 96

1050 730 590 520 440 400 370

line pressure test has been completed. This unit should never be exposed to gas line pressure in excess of 14 inches water column (1/2 PSIG). The furnace and its equipment shutoff valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 psi.

column (1/2 psig) may damage the regulator, while improper regulation may result at pressures lower than 5.5 inches water column at the unit inlet.

of the unit and should meet the specifications of all applicable national and local codes.

Table 10. Gas Pipe

NNoottee:: The shut-off gas cock must be installed outside

of the unit and should meet the specifications of all applicable national and local code.

1. Install a ground union joint downstream of the shut-off cock. This joint must also be installed outside of the unit.

2. Install a drip leg at least six (6) inches in depth next to the union as shown in . This drip leg is required to collect any sediment that may be deposited in the line.

3. Before connecting the piping circuit to the unit, bleed the air from the supply line and then cap or plug the line and test the pressure at the tapped shut-off cock. The pressure reading should not exceed 13.8 inches water column.

4. Using an appropriate backup wrench on the gas valve inlet boss, connect the gas piping to the unit. Check the completed piping for leaks using a soap and water solution or the equivalent.

5. After installation of the gas pipe in the unit, the pipe opening should be closed with the filler/barrier plug provided.

VVeerriiffyy MMaanniiffoolldd PPrreessssuurree

Check the manifold pressure at the unit gas valve. Do not exceed the recommended pressure shown on the unit nameplate. See Figure 6, p. 20 for connections. Refer to Manifold Pressure Check and Adjust in the following Step 5-Unit Startup section if adjustment is needed.

IInnppuutt CChheecckk aanndd AAddjjuussttmmeenntt

1. Make sure all gas appliances are off except the furnace.

2. Clock the gas meter with the furnace operating (determine the dial rating of the meter) for one revolution.

3. Match the “Sec” column in the Gas Flow (in cfh)

Table 11, p. 20 with the time clocked.

4. Read the “Flow” column opposite the number of seconds clocked.

Page 20

Regulator Cover Screw (Adj. screw beneath this screw)

Manual On-Off Switch

Inlet Pressure Tap

Vent Post

Outlet Pressure Tap

REF. VIEW (GAS VALVE)

Orifice

Burner

Manifold

Gas Valve

REF. VIEW (3 Burners)

UUnniitt IInnssttaallllaattiioonn

5. Table 11, p. 20 lists values for a 2 cubic foot dial. For 1, 1/2, or 5 Cu. Ft. dials use the following conversions:

• 1 Cu. Ft. Dial Gas Flow CFH = Chart Flow

Reading / 2

• 1/2 Cu Ft. Dial Gas Flow CFH = Chart Flow

Reading / 4

• 5 Cu. Ft. Dial Gas Flow CFH = 10X Chart Flow

Reading / 4

6. Multiply the final figure by the heating value of the gas obtained from the utility company and compare to the nameplate rating. This must not exceed the nameplate rating.

7. Changes can be made by adjusting the manifold pressure.

Figure 6. Burner and Valve

a. Attach a manifold pressure gauge to the Outlet

Pressure Tap.

b. Remove the cover screw on top of the gas valve

to access the manifold pressure adjustment screw.

c. Turn the adjustment screw in to increase the

gas flow rate, and out to decrease the gas flow rate using a 3/32" hex wrench or flat-head screwdriver.

NNoottee:: 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 column (+ 0.1). Input for natural gas must nnoott exceed the value shown on the rating plate.

Table 11. Gas Flow (in cfh)

Sec. Flow Sec. Flow Sec. Flow Sec. Flow

8 900 29 248 50 144 82 88

9 800 30 240 51 141 84 86

10 720 31 232 52 138 86 84

11 655 32 225 53 136 88 82

12 600 33 218 54 133 90 80

13 555 34 212 55 131 92 78

14 514 35 206 56 129 94 76

15 480 36 200 57 126 96 75

16 450 37 195 58 124 98 73

17 424 38 189 59 122 100 72

18 400 39 185 60 120 104 69

19 379 40 180 62 116 108 67

20 360 41 176 64 112 112 64

Table 11. Gas Flow (in cfh) (continued)

Sec. Flow Sec. Flow Sec. Flow Sec. Flow

21 343 42 172 66 109 116 62

22 327 43 167 68 106 120 60

23 313 44 164 70 103 124 58

24 300 45 160 72 100 128 56

25 288 46 157 74 97 132 54

26 277 47 153 76 95 136 53

27 267 48 150 78 92 140 51

28 257 49 147 80 90 144 50

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Page 21

UUnniitt IInnssttaallllaattiioonn

HHiigghh AAllttiittuuddee IInnssttaallllaattiioonn

Input ratings (BTUH) of these furnaces are based on sea level operation and should not be changed at

2000 to 8000 feet elevation, then change the burner orifices to the size listed in Table 12, p. 21. Refer to

Table 13, p. 21 for orifice part numbers.

elevations up to 2000 ft. If the unit installation is from

Table 12. Orifice Twist Drill Size

Orifice Twist

Drill Size if

Installed at

Sea Level

32 33 34 35 35 36 36 37

33 35 35 36 36 37 38 38

37 38 39 39 40 41 42 42

49 50 50 50 51 51 51 52

52 52 53 53 53 53 53 54

2000 3000 4000 5000 6000 7000 8000

Table 13. Orifice Part Numbers

Drill Size

32 ORF01307 41 ORF01413

33 ORF0134 42 ORF01410

34 ORF01335 49 ORF01333

35 ORF01407 50 ORF01332

36 ORF01408 51 ORF01336

37 ORF01406 52 ORF01331

38 ORF01306 53 ORF01411

39 ORF01409 54 ORF01412

40 ORF01336

Part

Number

Air Filter Installation

Altitude Above Sea Level and Orifice Change Required for that Elevation

From National Fuel Gas Code — Table F-4

Affix the filter label supplied with the unit adjacent to the filter area. Refer to Table 14, p. 21 to determine filter size.

Drill Size

Part

Number

Table 14. Determine Filter Size

Unit

YC~4024A 800 2.67 0.08

YC~4030A 1000 3.33 0.08

YC~4036A 1200 4.00 0.08

YC~4042A 1400 4.67 0.08

YC~4048A 1600 5.33 0.08

YC~4060A 2000 6.67 0.08

(a)

Filters must be installed in the return air system. The above square footages are based on 300 F.P.M. face velocity. If permanent filters are used, size per mfg. Recommendation with clear resistance of

0.05" WC.

Nominal

CFM

Filter Size

(Sq Ft)

The packaged unit requires an air filter. The unit does not come with a factory installed filter rack in it, however, two filter frame accessories are offered that

IImmppoorrttaanntt:: Air filters and media wheels or plates shall

meet the test requirements in UL 900.

will allow the installation of a filter within the unit, BAYFLTR101 & BAYFLTR201. Otherwise a field supplied filter rack must be installed by the installer in the return duct work.

(a)

Filter

Resistance

(W.C.)

18-EB40D1-1A-EN

Page 22

Run power supply lines through weather-tight conduit and secure to unit with strain relief.

Unit Ground Lug

Contactor

UUnniitt IInnssttaallllaattiioonn

Electrical Wiring

WWAARRNNIINNGG

IINNSSTTAALLLLAATTIIOONN WWAARRNNIINNGG —— HHIIGGHH VVOOLLTTAAGGEE MMOOVVIINNGG PPAARRTTSS!!

FFaaiilluurree ttoo ffoollllooww tthhiiss WWaarrnniinngg ccoouulldd rreessuulltt iinn pprrooppeerrttyy ddaammaaggee,, sseevveerree ppeerrssoonnaall iinnjjuurryy,, oorr ddeeaatthh.. BBooddiillyy iinnjjuurryy ccaann rreessuulltt ffrroomm hhiigghh vvoollttaaggee eelleeccttrriiccaall ccoommppoonneennttss,, ffaasstt mmoovviinngg ffaannss,, aanndd ccoommbbuussttiibbllee ggaass.. FFoorr pprrootteeccttiioonn ffrroomm tthheessee iinnhheerreenntt hhaazzaarrddss dduurriinngg iinnssttaallllaattiioonn aanndd sseerrvviicciinngg,, tthhee mmaaiinn ggaass vvaallvvee mmuusstt bbee ttuurrnneedd ooffff aanndd tthhee eelleeccttrriiccaall ssuuppppllyy mmuusstt bbee ddiissccoonnnneecctteedd.. IIff ooppeerraattiinngg cchheecckkss mmuusstt bbee ppeerrffoorrmmeedd wwiitthh tthhee uunniitt ooppeerraattiinngg,, iitt iiss tthhee tteecchhnniicciiaann’’ss rreessppoonnssiibbiilliittyy ttoo rreeccooggnniizzee tthheessee hhaazzaarrddss aanndd pprroocceeeedd ssaaffeellyy..

NNoottee:: This unit is factory wired for 230V. See wiring

diagram for 208V conversion.

EElleeccttrriiccaall CCoonnnneeccttiioonnss

Electrical wiring and grounding must be installed in accordance with local codes or, in the absence of local codes, with the National Electrical Code ANSI/NFPA 70, Latest Revision.

EElleeccttrriiccaall PPoowweerr

It is important that proper electrical power be available for the unit. Voltage variation should remain within the limits stamped on the unit nameplate.

DDiissccoonnnneecctt SSwwiittcchh

Provide an approved weatherproof disconnect within close proximity and wwiitthhiinn ssiigghhtt ooff tthhee uunniitt..If disconnect must be mounted to the cabinet, the location shown in Table 17, p. 22 should be the only one considered.

OOvveerr CCuurrrreenntt PPrrootteeccttiioonn

The branch circuit feeding the unit must be protected as shown on the unit's rating plate.

PPoowweerr WWiirriinngg

The power supply lines must be run in weather-tight conduit to the disconnect and into the side of the unit control box. Provide strain relief for all conduit with suitable connectors.

Provide flexible conduit supports whenever vibration transmission may cause a noise problem within the building structure.

1. Remove the Control/Heat access panel. Pass the power wires through the Power Entry hole in the end of the unit. See Table 15, p. 22.

2. Connect the high voltage wires to the appropriate contactor terminals. Single phase units use a two (2) pole contactor and three phase units use three (3) pole contactor. Connect the ground to the ground lug on the chassis. See Table 17, p. 22. Ensure all connections are tight.

GGRROOUUNNDDIINNGG:: TTHHEE UUNNIITT MMUUSSTT BBEE EELLEECCTTRRIICCAALLLLYY GGRROOUUNNDDEEDD IINN AACCCCOORRDDAANNCCEE WWIITTHH LLOOCCAALL CCOODDEESS OORR TTHHEE NNAATTIIOONNAALL EELLEECCTTRRIICC CCOODDEE..

NNoottee:: Unit must be grounded for ignitor to operate

properly. Gas pipe to unit is not an adequate ground. Ground the unit internally as provided. See wiring diagram for location in.

Table 15. Power Wiring

Table 16. Power Connections

Table 17. Mounted Disconnect Location

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Page 23

Figure 7. 4YCC4— Field Wiring Diagram

FAN (GR) (CONSTANT CIRCULATION)

COMMON

CONTACTOR/COMPRESSOR/FAN

HEAT FIRST STAGE (WH)

HEAT SECOND STAGE (WH)

24V

NOTES:

1. FUSED DISCONNECT SIZE, POWER WIRING AND GROUNDING OF EQUIPMENT MUST COMPLY WITH CODES.

2. BE SURE POWER SUPPLY AGREES WITH EQUIPMENT AND HEATER NAMEPLATE.

3. LOW VOLTAGE WIRING TO BE 18 AWG MINIMUM CONDUCTOR.

4. SEE UNIT DIAGRAM FOR ELECTRICAL CONNECTION DETAILS.

5. THE GAS ELECTRIC UNIT WILL PROVIDE CONSTANT CIRCULATION REGARDLESS OF COOLING OR HEATING STATUS WITH A ‘G’ SIGNAL ONLY FROM THE THERMOSTAT.

6. FOR SINGLE STAGE THERMOSTATS, JUMPER W1 AND W2 TOGETHER. SECOND STAGE HEAT WILL BEGIN 10 MINUTES AFTER FIRST STAGE.

DWG. C757192REVA

UUnniitt IInnssttaallllaattiioonn

CCoonnttrrooll WWiirriinngg ((CCllaassss IIII))

Low voltage control wiring should not be run in conduit with power wiring unless Class 1 wire of proper voltage rating is used. Route the thermostat cable or equivalent single leads of No. 18 AWG colored wire from the thermostat subbase terminals through the rubber grommet on the unit. See Unit Clearance Graphics for the control entry (24V Entry) location. Make connections as shown on the unit wiring diagram.

Do not short thermostat wires since this will damage the control transformer.

Refer to Table 18, p. 23 for recommended wire sizes and lengths for installing the unit thermostat. The total resistance of these low voltage wires must not exceed one (1) ohm. Any resistance in excess of 1 ohm may cause the control to malfunction because of the excessive voltage drop.

Table 18. Thermostat Wire Size and Max. Length

Wire Size

Maximum Length

18 75

16 125

14 200

TThheerrmmoossttaatt HHeeaatt AAnnttiicciippaattoorr

Set the heat anticipator of the thermostat to equal the amperage draw of the gas valve

IImmppoorrttaanntt:: UUppoonn ccoommpplleettiioonn ooff wwiirriinngg,, cchheecckk aallll

eelleeccttrriiccaall ccoonnnneeccttiioonnss,, iinncclluuddiinngg ffaaccttoorryy wwiirriinngg wwiitthhiinn tthhee uunniitt..

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.

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Page 24

Unit Startup

Pre-Start Quick Checklist

☐ Is the unit properly located and level with the

proper clearances? See “ Determine Unit

Clearances,” p. 8.

☐ Is the duct work correctly sized, run, taped,

insulated, and weatherproofed with proper unit arrangement as shown in the ductwork installation section?

☐ Is the condensate line properly sized, run, trapped,

and pitched and shown in the Condensate Drain Piping section?

☐ Is the gas piping correctly sized, run, trapped, and

purged of air? See Gas Piping Installation section.

☐ Is the filter of the correct size and quantity? Is it

clean and in place? See Air Filter Installation section.

☐ Is the wiring properly sized and run according to the

unit wiring diagram?

☐ Are all the wiring connections, including those in

the unit tight?

☐ Has the unit been properly grounded and fused

with the recommended fuse size?

☐ Is the thermostat well located, level, and correctly

wired? See Electrical Wiring section.

☐ Have the air conditioning systems been checked at

the service ports for charge and leak tested if necessary?

☐ Do the condenser fan and indoor blower turn free

without rubbing and are they tight on the shafts?

☐ Has the indoor blower speed been determined and

the proper speed been set? To adjust the fan, see the Indoor Fan Motor Speed Tap Setting section.

☐ Has all work been done in accordance with

applicable local and national codes?

☐ Are all covers and access panels in place to prevent

air loss and safety hazards?

Starting the Unit in Cooling Mode

NNoottee:: See the section on Sequence of Operation for a

description of the cooling operating sequence.

To start the unit in the cooling mode, set the thermostat system switch to COOL and move the thermostat COOL indicator to a setting below room temperature. The condenser fan motor, compressor and evaporator fan motor will operate automatically.

OOppeerraattiinngg PPrreessssuurree CChheecckkss

After the unit has operated in the cooling mode for a short 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 the normal operating pressures provided in the unit’s SERVICE FACTS.

NNoottee:: Do not use the PRESSURE CURVES from the

unit's SERVICE FACTS to determine the unit refrigerant charge. The correct charge is shown on the unit nameplate. To charge the system accurately, weigh in the charge according to the unit nameplate and check subcooling against the Subcooling Charging Table in the SERVICE FACTS.

VVoollttaaggee CChheecckk

With the compressor operating, check the line voltage at the unit (contactor is located behind the Control/Heat access panel). The voltage should be within the range shown on the unit nameplate. If low voltage is encountered, check the size and length of the supply line from the main disconnect to the unit. The line may be undersized for the length of the run.

CCoooolliinngg SShhuutt DDoowwnn

At the thermostat, place the system selector to the OFF position or reset the thermostat to a setting above room temperature.

IImmppoorrttaanntt:: De-energize the main power disconnect

ONLY when servicing the unit. Power may be required to keep the heat pump compressor warm and to boil off refrigerant in the compressor.

Starting the Unit in Heating Mode

NNoottee:: See the section on Sequence of Operation for a

description of the heat pump heating operating sequence.

These units are equipped with a solid-state ignition control that lights the burners each time the thermostat calls for heat. The burners are extinquished during the OFF cycle. To start the gas heating section of the unit:

1. Check that all grills and registers are open and all unit access panels are closed before start-up.

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Page 25

UUnniitt SSttaarrttuupp

2. Purge the gas supply line of air by opening the union ahead (upstream) of the unit. When the odor of gas is detected, retighten the union and wait five (5) minutes before proceeding.

3. Be sure the thermostat is at its lowest setting and the power to the unit is off.

a. Turn the main shut-off valve on the gas supply

line to ON.

b. Turn the thermostat to the highest setting in the

heating cycle.

4. Be sure the burner compartment access panel is in place.

a. Turn on the electrical power to the unit.

b. Turn the thermostat to the highest setting in the

heating cycle.

5. As the thermostat calls for heat, the system cycles as follows:

a. The combustion blower is energized.

b. The pressure switch is closed.

c. The gas valve opens and the ignitor lights the

burner.

d. Cycle the thermostat on and off a few times to

check out the control system and burner operation characteristics.

NNoottee:: For manifold pressures and orifice sizes

for gas with other BTU ratings, contact the local gas utility. Manifold pressure should be 3.5 inches w.c. (+0.1). Input must nnoott exceed the value shown on the rating plate.

e. With the burner operating, check the manifold

pressure with a manometer.

6. Do not exceed recommended pressures. If the manifold pressure needs adjustment, refer to Manifold Pressure Check and Adjust in the Maintenance section. With the burners operating, check the manifold pressure with a manometer.

7. If necessary, adjust the unit to obtain an air temperature rise with that specified on the unit nameplate. To adjust, refer to the Indoor Fan Motor Speed Adjustment in the Maintenance section.

NNoottee:: 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 thermostat at the desired temperature setting and the unit will function automatically.

Sequence of Operation

GGeenneerraall

Operation of the system cooling (and optional heating) cycles is controlled by the setting of the system switch on the room thermostat. Once the system switch is placed either in the “HEAT” or “COOL” position, unit operation is automatic. A fan switch on the thermostat also provides for continuous operation of the evaporator fan when desired. The fan switch “ON” position provides continuous operation while the “AUTO” position provides operation during the heating or cooling cycles.

HHeeaattiinngg CCyyccllee

TThheerrmmoossttaatt ccaallll ffoorr hheeaatt

(R) and (W) thermostat contacts close signaling the control module (IGN) to run its self-check routine. After the control has verified that the pressure switch (PS) contacts are open, the limit switch (TCO) contacts are closed, and the flame rollout (RO) switch is closed, the induced draft blower (CFM) will be energized.

After the induced draft blower (CFM) has come up to speed, the control will verify that the pressure switch (PS) contacts are closed and run the induced draft blower for a 20 second pre-purge. The gas valve (GV) is energized to permit gas flow and the spark ignitor (IP) is energized. The flame detector (FD) confirms that ignition has been achieved within the 7 second trial period.

As the flame detector confirms that 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 cycle

TThheerrmmoossttaatt ssaattiissffiieedd:

(R) and (W) contacts open signaling the control module to close the gas valve and de-energize the induced draft blower after approximately 5 seconds post-purge. The indoor blower motor will continue to operate at the current speed for 60 or 90 seconds (field selectable) after the flames are extinguished.

CCoooolliinngg CCyyccllee

With the room thermostat system switch in the "COOLING" position and the fan switch in the "AUTO" position, the compressor contactor (CC) and the indoor fan motor (IDM) are energized.

The energized compressor contactor (CC) completes the circuit to the compressor (CPR) and a secondary circuit to the outdoor fan motor (ODM). If the compressor safety controls are closed, the compressor (CPR) will operate with the outdoor fan motor (ODM). The indoor fan motor (IDM) will operate. The thermostat will continue to cycle the compressor and fans to maintain the desired temperature.

With the thermostat fan switch in the "ON" position, the indoor fan motor (IDM) will continue to run at constant

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Page 26

UUnniitt SSttaarrttuupp

circulation of 40 – 50% airflow of selected tap regardless of compressor and condenser fan operation.

SSaaffeettyy SSeeqquueenncceess

This product is equipped with safety devices to protect against abnormal conditions.

The temperature limit switch (TCO) is located on the blower barrier, and can be accessed through the blower compartment. This automatic reset device protects against excessive leaving air temperature. If this device opens, the gas valve is immediately closed and will not permit operation until the limit switch closes.

The rollout switch (RO) is located in the gas compartment near the inlet of the burners. This is a manual reset device designed to protect against any form of flame rollout. If this device is opened the gas valve is immediately de-energized and the control (IGN) will lockout the system. The rollout switch (RO) must be reset before operation is allowed to continue.

The pressure switch (PS) is located in the upper right side of the gas compartment. This automatic device assures adequate combustion air pressure. If pressure against the induced draft blower outlet becomes excessive, the pressure switch will react and shut off the gas valve, until acceptable combustion pressure is again available.

If the control (IGN) does not sense flame within the first trial for ignition period, the gas valve will be deenergized. The control (IGN) will initiate a 60 seconds interpurge. Following the interpurge, the control will perform a second ignition attempt. If the second try is not successful, the control will start another 60 second interpurge. After the interpurge, a third attempt will be tried. If the third try is not successful, the control will lock out.

If loss of flame occurs during a heating cycle, the control (IGN) will close the gas valve and cycle through the ignition trial as stated above.

If control lock out occurs, the control (IGN) will retry a complete ignition sequence in 1 hour.

The control (IGN) can be reset by removing power to the unit or by turning the thermostat from “on” to “off” for approximately three seconds, then back “on”.

Final Installation Checklist

☐ Does the unit run and operate as described in the

section on "Sequence of Operation" in response to the room thermostat?

☐ Are the condenser fan and indoor blower operating

correctly with proper rotation and without undue noise?

☐ Is the compressor operating correctly and has the

system been checked with a charging chart?

☐ Has the voltage and running current been checked

to deter mine if it is within limits?

☐ Has the thermostat been checked for calibration

and the air discharge grilles adjusted to balance the system?

☐ Has the ductwork been checked for air leaks and

condensation?

☐ Has the furnace manifold pressure been checked

and adjusted if necessary?

☐ Has the heating air temperature rise been checked?

☐ Has the unit been checked for tubing and sheet

metal rattles? Are there any other unusual noises to be checked?

☐ Are all covers and panels in place and properly

fastened?

☐ Has the owner been instructed on the proper

operation and maintenance of the unit? Be sure to leave this manual with the owner.

Maintenance

Service Maintenance

Service maintenance should be performed by qualified service personnel.

CCoooolliinngg SSeeaassoonn

To keep the unit operating safely and efficiently, the manufacturer recommends that a qualified service technician check the entire system at least once each year or more often if needed. The service technician should examine 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 components and wiring (for possible replacement and connection tightness)

• condensate drain (for proper sealing and cleaning)

• unit duct connections (to see that they are physically sound and sealed to the unit casing)

• unit mounting support (for structural integrity)

• the unit (for obvious unit deterioration)

HHeeaattiinngg SSeeaassoonn

Complete the following unit inspections and service routines described at the beginning of each heating season.

• Visually inspect the unit to ensure that the airflow required for combustion and condenser coil is not obstructed from the unit.

• Inspect the control panel wiring to verify that all electrical connections are tight and that the wire insulation is intact.

• Check the operation of the gas ignition system as follows: Turn off the gas supply with the unit operating to verify that the gas valve closes and that a re-ignition cycle is initiated by the unit.

• Visually inspect the inside of the burners and the

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Page 27

UUnniitt SSttaarrttuupp

burner ports for deposit buildup and corrosion. Wipe and brush the inside of the burner and the burner ports and then clean with a dry cloth. If the deposit buildup or corrosion is excessive, replace the burners.

FFlluuee HHoooodd aanndd CCoommbbuussttiioonn BBlloowweerr CClleeaanniinngg

NNoottee:: Never use combustible cleaning fluids on any

part of the furnace.

Before each heating season, the flue should be inspected for signs of flaking rust and soot deposits. DDiirrttyy fflluueess sshhoouulldd bbee cclleeaanneedd bbyy qquuaalliiffiieedd sseerrvviiccee ppeerrssoonnnneell OONNLLYY using the following procedure:

1. Turn the comfort control to OOFFFF. Turn the main power disconnect OOFFFF. Turn the manual gas valve OOFFFF.

2. Remove the flue hood and the CONTROL/HEAT access panel.

3. Remove the combustion blower assembly from the flue box. Remove the flue box and the flue restrictors.

4. Remove all wires from the gas valve while carefully noting their locations.

5. Disconnect the gas supply line from the valve.

6. Remove the manifold retaining screws and pull the burner-manifold assembly from the heat exchanger.

7. Remove the inlet turbulators being careful not to break or damage them.

8. Wipe the flue box and flue baffles clean with a clean, dry cloth.

9. Replace all gaskets with new ones.

10. Replace all damaged or broken turbulators with new ones.

11. Reassemble the unit by reversing Steps 2 through 7 above. Take care that all gaskets seat properly.

12. Check all wires for correct installation by referring to the unit’s electrical wiring diagram in the SERVICE FACTS.

13. Leak test all gas line connections with a soap and water solution or the equivalent.

14. Re-install the CONTROL/HEAT access panels and the flue hood.

15. Visually inspect the unit to ensure that the airflow opening for combustion is not obstructed.

16. Follow “Unit Startup,” p. 24 to place the unit back in service.

IInnddoooorr FFaann MMoottoorr ((IIDDMM)) SSppeeeedd TTaapp SSeettttiinngg

The 208/230 units are factory set to medium speed.

208/230 Volt Motor Tap Settings ()

High speed setting: On the IGN board:

1. Connect the "RD" wire to the "PARK" terminal.

2. Connect the (IDM) PR wire to the "BLOWER LOAD" terminal.

Low speed setting: On the IGN board:

1. Connect the "RD" wire to the "BLOWER LOAD" terminal.

2. Connect the (IDM) PR wire to the "PARK" terminal.

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Page 28

LOAD

BLOWER

LOAD

INDUCER

(CC1) RD

(IDM) PR

PARK

( CC1) RD

LOAD

BLOWER

LOAD

INDUCER

(CC1) RD

(IDM) PR

PARK

( CC1) RD

UUnniitt SSttaarrttuupp

Figure 8. 208/230 Volt Speed Taps

Table 19. IGN LED Diagnostic Indicators

Status LED

Steady OFF

Slow Flash Rate

Fast Flash Rate Not used 4 Flashes

Steady ON Normal, No Call for Heat

Fast Flash Rate: The LED will flash on for 1/4 second and off for 1/4 second. Slow Flash Rate: The LED will flash on for 3/4 second, then off for 1/4 second.

The pause between groups of fast flashes is 3 seconds.

Check Power or Failed Board 2 Flashes

Normal, No Call for Heat

3 Flashes

5 Flashes

6 Flashes

7 Flashes

Liteport LED

System Lockout: Failed to detect or sustain flame

Pressure switch problem detected

High Limit switch protection device open

Flame sensed and gas valve not energized or flame sensed and no “W” signal.

Flame Rollout Switch open

Thermostat miswired; W! & W2

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Page 29

Pressure Curves

Cooling

Liquid PRESSURE (PSIG)

OUTDOOR TEMPERATURE (Degree F)

SUCTION PRESSURE (PSIG)

OUTDOOR TEMPERATURE (Degree F)

COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 65 DEG F.

TO CHECK COOLING PERFORMANCE, SELECT THE PROPER INDOOR CFM, ALLOW PRESSURES TO STABILIZE. MEASURE INDOOR WET BULB

TEMPERATURE, OUTDOOR TEMPERATURE, DISCHARGE AND SUCTION PRESSURES. ON THE PLOTS LOCATE OUTDOOR TEMPERATURE (1);

LOCATE INDOOR WET BULB (2); FIND INTERSECTION OF OD TEMP. & ID W.B. (3); READ LIQUID (4) OR SUCTION (5) PRESSURE IN LEFT COLUMN.

EXAMPLE: (1) OUTDOOR TEMP. 82 F.

(2) INDOOR WET BULB 67 F.

(3) AT INTERSECTION ACTUAL:

(4) DISCHARGE PRESSURE @ 800 CFM CFM IS 333 PSIG.

DISCHARGE PRESSURE SHOULD BE +/- 10 PSI OF CHART

(5) SUCTION PRESSURE @ 800 CFM CFM IS 141 PSIG.

SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART

200

250

300

350

400

450

500

40 60 80 100 120

110

115

120

125

130

135

140

145

150

155

160

165

170

40 60 80 100 120

(1)

(3)

(5)

(4)

(2)

INDOOR ENTERING

WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59

DEG F.

110

115

120

125

130

135

140

145

150

155

160

165

170

40 60 80 100 120

(1)

(3)

(5)

(4)

(2)

INDOOR ENTERING

WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG

INDOOR ENTERING

WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59

DEG F.

Dwg. 4YCC4024E1

UUnniitt SSttaarrttuupp

Figure 9. Pressure Curve – 4YCC4024E1

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Page 30

Liquid PRESSURE (PSIG)

OUTDOOR TEMPERATURE (Degree F)

SUCTION PRESSURE (PSIG)

OUTDOOR TEMPERATURE (Degree F)

COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 65 DEG F.

TO CHECK COOLING PERFORMANCE, SELECT THE PROPER INDOOR CFM, ALLOW PRESSURES TO STABILIZE. MEASURE INDOOR WET BULB TEMPERATURE, OUTDOOR TEMPERATURE, DISCHARGE AND SUCTION PRESSURES. ON THE PLOTS LOCATE OUTDOOR TEMPERATURE (1); LOCATE INDOOR WET BULB (2); FIND INTERSECTION OF OD TEMP. & ID W.B. (3); READ LIQUID (4) OR SUCTION (5) PRESSURE IN LEFT COLUMN.

EXAMPLE: (1) OUTDOOR TEMP. 82 F. (2) INDOOR WET BULB 67 F. (3) AT INTERSECTION ACTUAL:

(4) DISCHARGE PRESSURE @ 900 CFM CFM IS 320 PSIG.

DISCHARGE PRESSURE SHOULD BE +/- 10 PSI OF CHART

(5) SUCTION PRESSURE @ 900 CFM CFM IS 136 PSIG.

SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART

110

130

150

170

190

210

40 60 80 100 120

200

250

300

350

400

450

500

40 60 80 100 120

(1)

(3)

(5)

(4)

(2)

INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG

INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM

DEG F.

Dwg. 4YCC4030E1

Cooling

UUnniitt SSttaarrttuupp

Figure 10. Pressure Curve – 4YCC4030E1

18-EB40D1-1A-EN

Page 31

Figure 11. Pressure Curve – 4YCC4036E1

Liquid PRESSURE (PSIG)

OUTDOOR TEMPERATURE (Degree F)

SUCTION PRESSURE (PSIG)

OUTDOOR TEMPERATURE (Degree F)

COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 65 DEG F.

EXAMPLE: (1) OUTDOOR TEMP. 82 F.

(2) INDOOR WET BULB 67 F. (3) AT INTERSECTION ACTUAL:

(4) DISCHARGE PRESSURE @ 1200 CFM CFM IS 326 PSIG.

DISCHARGE PRESSURE SHOULD BE +/- 10 PSI OF CHART

(5) SUCTION PRESSURE @ 1200 CFM CFM IS 144 PSIG.

SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART

DWG.NO. 4YCC4036E1

110

115

120

125

130

135

140

145

150

155

160

165

170

40 60 80 100 120

200

250

300

350

400

450

500

40 60 80 100 120

(1)

(3)

(5)

(4)

(2)

INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG

INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.

Cooling

UUnniitt SSttaarrttuupp

18-EB40D1-1A-EN

Page 32

Cooling

Liquid PRESSURE (PSIG)

OUTDOOR TEMPERATURE (Degree F)

SUCTION PRESSURE (PSIG)

OUTDOOR TEMPERATURE (Degree F)

COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 65 DEG F.

EXAMPLE: (1) OUTDOOR TEMP. 82 F. (2) INDOOR WET BULB 67 F. (3) AT INTERSECTION ACTUAL:

(4) DISCHARGE PRESSURE @ 1450 CFM CFM IS 326 PSIG.

DISCHARGE PRESSURE SHOULD BE +/- 10 PSI OF CHART

(5) SUCTION PRESSURE @ 1450 CFM CFM IS 145 PSIG.

SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART

DWG.NO. 4YCC4042E1

110

115

120

125

130

135

140

145

150

155

160

165

170

40 60 80 100 120

200

250

300

350

400

450

500

40 60 80 100 120

(1)

(3)

(5)

(4)

(2)

INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG

INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.

UUnniitt SSttaarrttuupp

Figure 12. Pressure Curve – 4YCC4042E1

18-EB40D1-1A-EN

Page 33

Figure 13. Pressure Curve – 4YCC4048E1

Cooling

Liquid PRESSURE (PSIG)

OUTDOOR TEMPERATURE (Degree F)

SUCTION PRESSURE (PSIG)

OUTDOOR TEMPERATURE (Degree F)

COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 65 DEG F.

EXAMPLE: (1) OUTDOOR TEMP. 82 F. (2) INDOOR WET BULB 67 F. (3) AT INTERSECTION ACTUAL:

(4) DISCHARGE PRESSURE @ 1650 CFM CFM IS 327 PSIG.

DISCHARGE PRESSURE SHOULD BE +/- 10 PSI OF CHART

(5) SUCTION PRESSURE @ 1650 CFM CFM IS 139 PSIG.

SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART

DWG.NO. 4YCC4048E1

110

115

120

125

130

135

140

145

150

155

160

165

170

40 60 80 100 120

200

250

300

350

400

450

500

40 60 80 100 120

(1)

(3)

(5)

(4)

(2)

INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG

INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.

UUnniitt SSttaarrttuupp

18-EB40D1-1A-EN

Page 34

Cooling

Liquid PRESSURE (PSIG)

OUTDOOR TEMPERATURE (Degree F)

SUCTION PRESSURE (PSIG)

OUTDOOR TEMPERATURE (Degree F)

COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 65 DEG F.

EXAMPLE: (1) OUTDOOR TEMP. 82 F. (2) INDOOR WET BULB 67 F. (3) AT INTERSECTION ACTUAL:

(4) DISCHARGE PRESSURE @ 1750 CFM CFM IS 335 PSIG.

DISCHARGE PRESSURE SHOULD BE +/- 10 PSI OF CHART

(5) SUCTION PRESSURE @ 1750 CFM CFM IS 140 PSIG.

SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART

DWG.NO. 4YCC4060E1

110

115

120

125

130

135

140

145

150

155

160

165

170

40 60 80 100 120

200

250

300

350

400

450

500

40 60 80 100 120

(1)

(3)

(5)

(4)

(2)

INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG

INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.

UUnniitt SSttaarrttuupp

Figure 14. Pressure Curve – 4YCC4060E1

18-EB40D1-1A-EN

Page 35

Indoor Fan Performance

UUnniitt SSttaarrttuupp

4YCC4024E1060

Motor Speed

Constant

Circulation

Cooling - Low

Cooling - Med

Cooling - High

Heating - Low

Heating - High

Note: Cooling airflow must not exceed 900 CFM due to condensate blowoff.

CFM

WATTS

CFM -

WATTS -

CFM - - -

WATTS - - -

CFM - - - -

WATTS - - - -

CFM

WATTS

CFM - -

WATTS - -

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

1123

(1123)

143

(143)

900

(891)

114

(115)

1059

(1059)

152

(152)

846

(838)

121

(122)

994

(994)

160

(160)

1122

(1122)

213

(213)

EXTERNAL STATIC PRESSURE (IN.WG)

Horizontal Airflow [Down Airflow]

APPROXIMATELY 40-50% COOLING OR HEATING AIRFLOW

794

(786)

128

(129)

890

(881)

158

(159)

943

(943)

167

(167)

1069

(1069)

221

(221)

729

(722)

138

(138)

836

(828)

167

(167)

908

(899)

248

(249)

889

(889)

175

(175)

1022

(1022)

229

(229)

- - - - - -

777

(769)

175

(176)

863

(854)

256

(258)

974

(974)

238

(238)

707

(700)

185

(186)

818

(810)

264

(266)

- - - - - -

922

(922)

245

(245)

- - - -

773

(765)

274

(276)

871

(871)

253

(253)

731

(724)

282

(284)

809

(809)

261

(261)

- -

4YCC4030E1070

Motor Speed

Constant

Circulation

Cooling - Low

Cooling - Med

Cooling - High

Heating - Low

Heating - High

Note: Cooling airflow must not exceed 1125 CFM due to condensate blowoff.

CFM

WATTS

CFM

WATTS

CFM - -

WATTS - -

CFM - - - -

WATTS - - - -

CFM

WATTS

CFM - - -

WATTS - - -

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

1051

(1041)

126

(126)

1148

(1136)

199

(197)

994

(984)

134

(135)

1103

(1091)

208

(205)

939

(930)

142

(143)

1108

(1097)

239

(240)

1061

(1050)

216

(214)

EXTERNAL STATIC PRESSURE (IN.WG)

Horizontal Airflow [Down Airflow]

APPROXIMATELY 40-50% COOLING OR HEATING AIRFLOW

889

(880)

150

(150)

1070

(1059)

247

(248)

1022

(1012)

224

(222)

1158

(1147)

301

(298)

(1017)

(1088)

(1111)

840

(831)

158

(158)

1027

256

(258)

1099

259

(260)

982

(972)

233

(230)

1122

310

(307)

- - - - - -

975

(965)

267

(269)

1059

(1048)

268

(270)

932

(922)

243

(241)

1084

(1073)

320

(317)

920

(911)

274

(276)

1017

(1007)

278

(279)

1039

(1028)

331

(328)

875

(866)

282

(284)

968

(959)

289

(290)

- - - - -

988

(978)

343

(339)

- - -

18-EB40D1-1A-EN

Page 36

UUnniitt SSttaarrttuupp

4YCC4036E1070

EXTERNAL STATIC PRESSURE (IN.WG)

Horizontal Airflow [Down Airflow]

Motor Speed

Constant

Circulation

Cooling - Low

Cooling - Med

Cooling - High

Heating - Low

Heating - High

Note: Cooling airflow must not exceed 1350 CFM due to condensate blowoff.

4YCC4036E1090

CFM

WATTS

CFM -

WATTS -

CFM - - - -

WATTS - - - -

CFM - - - - -

WATTS - - - - -

CFM

WATTS

CFM

WATTS

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

APPROXIMATELY 40-50% COOLING OR HEATING AIRFLOW

1185

(1173)

241

(238)

1386

(1373)

386

(382)

1272

(1259)

352

(354)

1141

(1130)

251

(248)

1354

(1340)

399

(395)

1243

(1231)

361

(363)

1099

(1088)

260

(258)

1311

(1298)

409

(405)

1214

(1202)

372

(374)

1055

(1044)

270

(267)

1276

(1263)

419

(415)

(1174)

(1336)

(1225)

EXTERNAL STATIC PRESSURE (IN.WG)

Horizontal Airflow [Down Airflow]

1186

382

(384)

1349

489

(492)

1009

(999)

279

(277)

1238

430

(425)

1154

(1142)

392

(394)

1319

(1306)

500

(503)

1326

(1299)

516

(519)

968

(958)

289

(286)

1198

(1186)

441

(437)

1116

(1105)

404

(406)

1277

(1264)

511

(514)

1296

(1270)

527

(530)

920

(911)

299

(296)

1164

(1153)

452

(448)

1072

(1061)

416

(418)

1242

(1230)

523

(526)

1263

(1238)

539

(542)

854

(846)

311

(308)

1069

(1058)

432

(428)

- - -

1199

(1187)

537

(540)

1225

(1201)

552

(555)

808

(800)

320

(316)

805

(797)

320

(317)

1160

(1148)

548

(551)

1183

(1159)

566

(569)

731

(724)

306

(303)

689

(682)

303

(300)

1124

(1113)

558

(561)

1150

(1127)

575

(578)

624

(618)

284

(282)

596

(590)

298

(295)

Motor Speed

Constant

Circulation

Cooling - Low

Cooling - Med

Cooling - High

Heating - Low

Heating - High

Note: Cooling airflow must not exceed 1350 CFM due to condensate blowoff.

CFM

WATTS

CFM

WATTS

CFM -

WATTS -

CFM - - - -

WATTS - - - -

CFM

WATTS

CFM

WATTS

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

APPROXIMATELY 40-50% COOLING OR HEATING AIRFLOW

1288

(-)

340 (-)

1292

(1285)

343

(343)

1367

(1355)

404

(404)

1254

(1238)

348

(348)

1326

(1320)

410

(410)

1259

(1252)

351

(351)

1341

(1326)

413

(413)

1225

(1207)

357

(357)

1300

(1294)

419

(419)

1230

(1222)

360

(360)

1310

(1295)

421

(421)

1193

(1176)

366

(366)

1271

(1263)

427

(427)

1199

(1186)

369

(369)

1282

(1267)

431

(431)

(1143)

(1234)

(1336)

(1148)

(1235)

1158

375

(375)

1241

437

(437)

1349

489

(492)

1163

378

(378)

1250

439

(439)

1117

(1091)

385

(385)

1201

(1196)

447

(447)

1319

(1306)

500

(503)

1124

(1111)

388

(388)

1212

(1183)

448

(448)

1070

(-)

395 (-)

1107

(1102)

423

(423)

1277

(1264)

511

(514)

1071

(1060)

398

(398)

1075

(1056)

404

(404)

- - - -

1242

(1230)

523

(526)

963

(954)

370

(370)

928

(913)

346

(346)

1199

(1187)

537

(540)

799

(781)

316

(316)

781 (-) 631 (-)

302 (-) 282 (-)

1160

(1148)

548

(551)

638 (-)

293 (-)

1124

(1113)

558

(561)

18-EB40D1-1A-EN

Page 37

4YCC4042E1060

UUnniitt SSttaarrttuupp

EXTERNAL STATIC PRESSURE (IN.WG)

Horizontal Airflow [Down Airflow]

Motor Speed

Constant

Circulation

Cooling - Low

Cooling - Med

Cooling - High

Heating - Low

Heating - High

Note: Cooling airflow must not exceed 1575 CFM due to condensate blowoff.

4YCC4042E1090

CFM

WATTS

CFM

WATTS

CFM

WATTS

CFM - - - -

WATTS - - - -

CFM

WATTS

CFM -

WATTS -

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

APPROXIMATELY 40-50% COOLING OR HEATING AIRFLOW

1358

(1345)

224

(228)

1521

(1506)

306

(312)

1104

(1109)

109

(109)

1393

(1379)

233

(238)

1490

(1475)

316

(322)

1042

(1047)

116

(117)

1171

(1177)

154

(155)

1348

(1334)

242

(247)

1448

(1433)

327

(333)

977

(982)

124

(125)

1112

(1117)

162

(163)

1296

(1283)

252

(257)

1391

(1377)

337

(344)

911

(916)

134

(134)

1050

(1055)

172

(173)

(1241)

(1348)

(1514)

EXTERNAL STATIC PRESSURE (IN.WG)

Horizontal Airflow [Down Airflow]

1253

262

(267)

1362

348

(354)

1529

455

(464)

841

(845)

142

(143)

990

(995)

182

(182)

- - - - - -

1338

(1325)

359

(366)

1491

(1476)

467

(477)

764

(767)

152

(153)

927

(931)

192

(193)

1315

(1302)

369

(377)

1467

(1453)

477

(487)

687

(690)

161

(162)

821

(856)

203

(204)

1307

(1293)

382

(389)

1425

(1411)

490

(499)

598

(601)

171

(172)

779

(783)

214

(215)

1254

(1241)

395

(403)

1385

(1371)

503

(513)

- - -

704

(707)

225

(226)

- -

1345

(1331)

513

(523)

- -

Motor Speed

Constant

Circulation

Cooling - Low

Cooling - Med

Cooling - High

Heating - Low

Heating - High

Note: Cooling airflow must not exceed 1575 CFM due to condensate blowoff.

CFM

WATTS

CFM

WATTS

CFM

WATTS

CFM - - - -

WATTS - - - -

CFM

WATTS

CFM

WATTS

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

APPROXIMATELY 40-50% COOLING OR HEATING AIRFLOW

1358

(1345)

224

(228)

1521

(1506)

306

(312)

1419

(1426)

240

(241)

1559

(1567)

313

(315)

1393

(1379)

233

(238)

1490

(1475)

316

(322)

1380

(1387)

250

(251)

1524

(1531)

324

(325)

1348

(1334)

242

(247)

1448

(1433)

327

(333)

1341

(1348)

259

(260)

1483

(1491)

335

(337)

1296

(1283)

252

(257)

1391

(1377)

337

(344)

1295

(1301)

269

(270)

1443

(1450)

346

(347)

(1241)

(1348)

(1514)

(1255)

(1408)

1253

262

(267)

1362

348

(354)

1529

455

(464)

1249

279

(281)

1401

356

(358)

- - - - - -

1338

(1325)

359

(366)

1491

(1476)

467

(477)

1204

(1210)

291

(292)

1363

(1370)

367

(368)

1315

(1302)

369

(377)

1467

(1453)

477

(487)

1160

(1166)

302

(303)

1319

(1326)

379

(381)

1307

(1293)

382

(389)

1425

(1411)

490

(499)

1115

(1120)

312

(314)

1276

(1282)

392

(394)

1254

(1241)

395

(403)

1385

(1371)

503

(513)

1069

(1074)

323

(325)

1233

(1239)

403

(405)

- -

1345

(1331)

513

(523)

1015

(1020)

333

(335)

1195

(1201)

415

(417)

961

(966)

348

(349)

1147

(1152)

428

(430)

18-EB40D1-1A-EN

Page 38

UUnniitt SSttaarrttuupp

4YCC4048E1070

Motor Speed

Constant

Circulation

Cooling - Low

Cooling - Med

Cooling - Med High

Cooling - High

Heating - Low

Heating - High

Note: Cooling airflow must not exceed 1800 CFM due to condensate blowoff.

CFM

WATTS

CFM

WATTS

CFM

WATTS

CFM -

WATTS -

CFM - - - - -

WATTS - - - - -

CFM

WATTS

CFM -

WATTS -

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

1583

(1567)

302

(308)

1763

(1745)

414

(422)

1120

(1126)

117

(117)

1542

(1526)

313

(320)

1723

(1706)

426

(434)

1786

(1768)

577

(589)

1047

(1052)

126

(127)

1204

(1210)

176

(177)

1502

(1487)

324

(330)

1689

(1672)

436

(444)

1757

(1739)

591

(603)

980

(985)

135

(136)

1149

(1154)

185

(186)

EXTERNAL STATIC PRESSURE (IN.WG)

Horizontal Airflow [Down Airflow]

APPROXIMATELY 40-50% COOLING OR HEATING AIRFLOW

1460

(1445)

332

(339)

1648

(1632)

448

(457)

1729

(1712)

604

(616)

914

(918)

145

(146)

1095

(1100)

195

(196)

(1401)

(1593)

(1683)

(1048)

1415

346

(352)

1609

459

(468)

1700

617

(629)

840

(845)

156

(156)

1043

205

(206)

- - - - - -

1568

(1552)

471

(480)

1675

(1658)

631

(644)

1769

(1751)

613

(625)

758

(762)

168

(168)

989

(994)

216

(217)

1527

(1512)

483

(493)

1648

(1632)

643

(656)

1728

(1711)

631

(644)

674

(677)

179

(180)

926

(930)

227

(228)

1488

(1473)

495

(505)

1624

(1608)

655

(668)

1688

(1671)

643

(656)

581

(584)

188

(189)

858

(862)

239

(240)

1447

(1433)

510

(520)

1504

(1489)

599

(611)

1652

(1635)

647

(660)

- - -

798

(802)

249

(250)

- -

1545

(1530)

611

(623)

- -

4YCC4048E1090

Motor Speed

Constant

Circulation

Cooling - Low

Cooling - Med

Cooling - Med High

Cooling - High

Heating - Low

Heating - High

Note: Cooling airflow must not exceed 1800 CFM due to condensate blowoff.

CFM

WATTS

CFM

WATTS

CFM

WATTS

CFM -

WATTS -

CFM - - - - -

WATTS - - - - -

CFM

WATTS

CFM

WATTS

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

1583

(1567)

302

(308)

1763

(1745)

414

(422)

1419

(1426)

240

(241)

1559

(1567)

313

(315)

1542

(1526)

313

(320)

1723

(1706)

426

(434)

1786

(1768)

577

(589)

1380

(1387)

250

(251)

1524

(1531)

324

(325)

1502

(1487)

324

(330)

1689

(1672)

436

(444)

1757

(1739)

591

(603)

1341

(1348)

259

(260)

1483

(1491)

335

(337)

EXTERNAL STATIC PRESSURE (IN.WG)

Horizontal Airflow [Down Airflow]

APPROXIMATELY 40-50% COOLING OR HEATING AIRFLOW

1460

(1445)

332

(339)

1648

(1632)

448

(457)

1729

(1712)

604

(616)

1295

(1301)

269

(270)

1443

(1450)

346

(347)

(1401)

(1593)

(1683)

(1255)

(1408)

1415

346

(352)

1609

459

(468)

1700

617

(629)

1249

279

(281)

1401

356

(358)

- - - - - -

1568

(1552)

471

(480)

1675

(1658)

631

(644)

1769

(1751)

613

(625)

1204

(1210)

291

(292)

1363

(1370)

367

(368)

1527

(1512)

483

(493)

1648

(1632)

643

(656)

1728

(1711)

631

(644)

1160

(1166)

302

(303)

1319

(1326)

379

(381)

1488

(1473)

495

(505)

1624

(1608)

655

(668)

1688

(1671)

643

(656)

1115

(1120)

312

(314)

1276

(1282)

392

(394)

1447

(1433)

510

(520)

1504

(1489)

599

(611)

1652

(1635)

647

(660)

1069

(1074)

323

(325)

1233

(1239)

403

(405)

- -

1545

(1530)

611

(623)

1015

(1020)

333

(335)

1195

(1201)

415

(417)

961

(966)

348

(349)

1147

(1152)

428

(430)

18-EB40D1-1A-EN

Page 39

4YCC4060E1090

UUnniitt SSttaarrttuupp

EXTERNAL STATIC PRESSURE (IN.WG)

Horizontal Airflow [Down Airflow]

Motor Speed

Constant

Circulation

Cooling - Low

Cooling - Med

Cooling - High

Heating - Low

Heating - High

Note: Cooling airflow must not exceed 2250 CFM due to condensate blowoff.

4YCC4060E1115

CFM

WATTS

CFM

WATTS

CFM

WATTS

CFM

WATTS

CFM

WATTS

CFM -

WATTS -

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

APPROXIMATELY 40-50% COOLING OR HEATING AIRFLOW

1857

(1831)

515

(524)

2031

(2003)

594

(611)

2083

(2054)

749

(770)

1534

(1541)

281

(282)

1831

(1802)

523

(533)

2003

(1975)

609

(627)

2058

(2030)

759

(781)

1489

(1497)

292

(293)

1594

(1602)

348

(350)

1800

(1765)

533

(545)

1974

(1946)

624

(642)

2032

(2010)

769

(790)

1445

(1452)

304

(305)

1551

(1558)

361

(363)

1766

(1728)

544

(558)

1940

(1913)

639

(658)

2003

(1976)

779

(804)

1403

(1410)

314

(316)

1511

(1518)

373

(374)

(1880)

(1946)

(1367)

(1478)

EXTERNAL STATIC PRESSURE (IN.WG)

Horizontal Airflow [Down Airflow]

- - - - - - -

1907

653

(672)

1974

788

(819)

1361

325

(327)

1471

384

(386)

1874

(1848)

667

(686)

1943

(1911)

803

(832)

1314

(1321)

337

(339)

1430

(1437)

396

(398)

1837

(1811)

681

(701)

1911

(1879)

816

(845)

1275

(1281)

348

(349)

1386

(1392)

409

(411)

1805

(1780)

695

(715)

1877

(1848)

830

(858)

1234

(1240)

358

(360)

1344

(1351)

420

(423)

1771

(1746)

709

(730)

1843

(1817)

845

(872)

- - -

1305

(1311)

432

(434)

- -

1807

(1781)

860

(887)

1265

(1271)

443

(445)

Motor Speed

Constant

Circulation

Cooling - Low

Cooling - Med

Cooling - High

Heating - Low

Heating - High

Note: Cooling airflow must not exceed 2250 CFM due to condensate blowoff.

CFM

WATTS

CFM

WATTS

CFM

WATTS

CFM

WATTS

CFM

WATTS

CFM -

WATTS -

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

APPROXIMATELY 40-50% COOLING OR HEATING AIRFLOW

1857

(1831)

515

(524)

2031

(2003)

594

(611)

2083

(2054)

749

(770)

1827

(1815)

492

(510)

1831

(1802)

523

(533)

2003

(1975)

609

(627)

2058

(2030)

759

(781)

1792

(1790)

505

(520)

1927

(1910)

614

(630)

1800

(1765)

533

(545)

1974

(1946)

624

(642)

2032

(2010)

769

(790)

1757

(1757)

517

(532)

1894

(1875)

627

(634)

1766

(1728)

544

(558)

1940

(1913)

639

(658)

2003

(1976)

779

(804)

1721

(1712)

529

(549)

1861

(1839)

639

(647)

(1880)

(1946)

(1679)

(1803)

- - - - - - -

1907

653

(672)

1974

788

(819)

1685

541

(560)

1824

651

(660)

1874

(1848)

667

(686)

1943

(1911)

803

(832)

1646

(1648)

553

(570)

1788

(1773)

664

(672)

1837

(1811)

681

(701)

1911

(1879)

816

(845)

1605

(1613)

566

(582)

1750

(1736)

677

(685)

1805

(1780)

695

(715)

1877

(1848)

830

(858)

1570

(1574)

577

(596)

1711

(1704)

689

(698)

1771

(1746)

709

(730)

1843

(1817)

845

(872)

- - -

1674

(1661)

702

(712)

- -

1807

(1781)

860

(887)

1639

(1622)

715

(726)

18-EB40D1-1A-EN

Page 40

UUnniitt SSttaarrttuupp

To set indoor motor for the desired speed options, connect the motor leads in the taps as shown below:

Table 20. Motor Wiring: 4YCC4024 - 42, 4YCC4060

MOTOR WIRING MOTOR TAP

MODE/SPEED

CONSTANT CIRCULATION

COOLING-LOW & HEATING-LOW

COOLING-LOW & HEATING-HIGH

COOLING-MED & HEATING-LOW

COOLING-MED & HEATING-HIGH

COOLING-HIGH & HEATING-LOW

COOLING-HIGH & HEATING-HIGH

G signal (GR - green wire), Y signal (YL - yellow wire), W signal (PR - purple wire)

Table 21. Motor Wiring: 4YCC4048

MOTOR WIRING MOTOR TAP

MODE/SPEED

CONSTANT CIRCULATION

COOLING-LOW & HEATING-LOW

COOLING-LOW & HEATING-HIGH

COOLING-MED LOW& HEATING-LOW

COOLING-MED LOW & HEATING-HIGH

COOLING-MED HIGH & HEATING-LOW

COOLING-MED HIGH & HEATING-HIGH

COOLING-HIGH & HEATING-LOW

COOLING-HIGH & HEATING-HIGH

G signal (GR - green wire), Y signal (YL - yellow wire), W signal (PR - purple wire)

1 2 3 4 5

G (GR)

G (GR) Y (YL) W (PR)

G (GR) W (PR) Y (YL)

G (GR) Y (YL) W (PR)

1 2 3 4 5

G (GR)

G (GR) Y (YL) W (PR)

G (GR) W (PR) Y (YL)

18-EB40D1-1A-EN

Page 41

Refrigerant Circuit

INDOOR COIL

EXPANSION VALVE BU

OUTDOOR COIL

LPCO

SCHRADER VALVE LO

EQUALIZER LINE

SCHRADER VALVE LIQUID

LIQUID

LINE

DRIER

INDICATES DIRECTION OF REFRIGERATION FLOW

COMPRESSOR

HPCO

EXPANSION VALVE

SCHRADER VALVE HI

UUnniitt SSttaarrttuupp

18-EB40D1-1A-EN

Page 42

UUnniitt SSttaarrttuupp

Troubleshooting Chart

PP--PPRRIIMMAARRYY CCAAUUSSEESS // SS--SSEECCOONNDDAARRYY CCAAUUSSEESS

SYSTEM FAULTS

Power Supply

Compr. I0L

Run Capacitor

High Voltage Wiring

REFRIGERANT CIRCUIT

Liquid Pressure too High

Liquid Pressure too Low

Suction Pressure too High

Suction Pressure too Low S S P S

Liquid Refrigerant Floodback (TXV System)

I.D. Coil Frosting

Compressor Runs Inadequate or No Cooling

ELECTRICAL

Compressor & O.D. Fan Do Not Start

Compressor will not Start but O.D. Fan Runs

O.D. Fan will Not Start P P

Compressor Hums but will Not Start

Compressor Cycles on IOL

I.D. Blower willnot Start P S S P P

P P S S P P P

P S P P P S

P P P P S S

P S P P P S P S P S S S S S S S

Start Relay

Start capacitor

Contactor Contacts

Low Voltage Wiring

Contactor Coil

Control Transformer

Low Voltage Fuse

Low Superheat

Stuck Compressor

Ineffecient Compressor

S P S S S

S P P S S

S P P S S S S P S

Refrigerant Overcharge

Refrigerant Undercharge

P S P S S

P S P S

Noncondensables

Excessive Evap. Load

Restricted O.D. Airflow

TXV Stuck Open

O.D. Air Recirculation

S S P

High Superheat

Restricted I.D. Airflow

Ref. Circuit Restrictions

18-EB40D1-1A-EN

Page 43

NNootteess

18-EB40D1-1A-EN

Page 44

Important Product Information

Packaged Unit Serial Number_____________________________________________________

Packaged Unit Model Number_____________________________________________________

Date of Installation_______________________________________________________________

Dealer___________________________________________________________________________

Service Information

Call your installing dealer if the unit is inoperative. Before you call, always check the following to be sure service is required:

1. Be sure the main switch that supplies power to the unit is in the ON position.

2. Replace any burned-out fuses or reset circuit breakers.

3. Be sure the thermostat is properly set.

Service Phone ___________________________________________________________________

About Trane and American Standard Heating and Air Conditioning

Trane and American Standard create comfortable, energy efficient indoor environments for residential applications. For more information, please visit www.trane.com or www.americanstandardair.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 has a policy of continuous data improvement and it reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.

18-EB40D1-1A-EN 29 Mar 2022

Supersedes (New)