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66832-UIM-D-1205

Unitary Products Group

27

Input / Output / CFM / Cabinet Width (A=14-1/2, B=17-1/2, C=21, D=24-1/2)
Motor voltage is 115VAC.

TABLE 18: Blower Performance - CFM

UPFLOW, SINGLE SIDE RETURN (WITHOUT FILTER)

BTU/H (kW)

Input / Output

Cabinet 

Size

Speed

 Tap

EXTERNAL STATIC PRESSURE, INCHES WC (kPa)

0.1 (0.025)

0.2 (0.050)

0.3 (0.075)

0.4 (0.099)

0.5 (0.124)

0.6 (0.149)

0.7 (0.174)

0.8 (0.199)

cfm cm/m

cfm cm/m

cfm cm/m

cfm cm/m

cfm cm/m

cfm cm/m

cfm cm/m

cfm cm/m

50/40 (14.7/11.7)

1

B

High

1411

40.0

1360

38.5

1289

36.5

1218

34.5

1154

32.7

1075

30.4

983

27.8

882

25.0

Med

1213

34.3

1177

33.3

1134

32.1

1085

30.7

1022

28.9

960

27.2

880

24.9

782

22.1

Low

887

25.1

884

25.0

871

24.7

848

24.0

814

23.0

775

21.9

726

20.6

656

18.6

75/60 (22.0/17.6)

1

B

High

1535

43.5

1470

41.6

1408

39.9

1343

38.0

1275

36.1

1202

34.0

1115

31.6

1014

28.7

Med

1215

34.4

1199

34.0

1182

33.5

1151

32.6

1106

31.3

1039

29.4

976

27.6

887

25.1

Low

875

24.8

874

24.7

864

24.5

847

24.0

827

23.4

799

22.6

736

20.8

658

18.6

75/60 (22.0/17.6)

1

C

High

1792

50.7

1724

48.8

1630

46.2

1552

43.9

1462

41.4

1367

38.7

1264

35.8

1152

32.6

Med

1597

45.2

1555

44.0

1496

42.4

1444

40.9

1372

38.9

1287

36.4

1190

33.7

1086

30.8

Low

1115

31.6

1140

32.3

1167

33.0

1183

33.5

1149

32.5

1093

31.0

1023

29.0

939

26.6

100/80 (29.3/23.4)

1

C

High

1868

52.9

1781

50.4

1690

47.9

1600

45.3

1498

42.4

1396

39.5

1277

36.2

1156

32.7

Med

1602

45.4

1553

44.0

1503

42.6

1447

41.0

1376

39.0

1287

36.4

1181

33.4

1060

30.0

Low

1147

32.5

1147

32.5

1147

32.5

1147

32.5

1132

32.1

1078

30.5

1009

28.6

918

26.0

100/80 (29.3/23.4)

2

D

High

NOT ALLOWED

Med-High

Med-Low

Low

125/100(36.6/29.3)

3

D

High

Med-High

Med-Low

Low

150/120(44.0/35.2)

2

D

High

Med-High

Med-Low

Low

DUAL RETURN (TWO SIDES OR ONE-SIDE & BOTTOM)

50/40 (14.7/11.7)

1

B

High

1507

42.7

1433

40.6

1371

38.8

1300

36.8

1223

34.6

1132

32.1

1040

29.4

938

26.6

Med

1239

35.1

1215

34.4

1175

33.3

1144

32.4

1085

30.7

1012

28.7

938

26.6

838

23.7

Low

907

25.7

907

25.7

891

25.2

875

24.8

849

24.0

800

22.7

741

21.0

672

19.0

75/60 (22.0/17.6)

1

B

High

1634

46.3

1562

44.2

1484

42.0

1417

40.1

1340

37.9

1238

35.1

1154

32.7

1030

29.2

Med

1243

35.2

1228

34.8

1214

34.4

1184

33.5

1133

32.1

1079

30.6

999

28.3

912

25.8

Low

886

25.1

886

25.1

886

25.1

886

25.1

865

24.5

823

23.3

777

22.0

700

19.8

75/60 (22.0/17.6)

1

C

High

1978

56.0

1896

53.7

1803

51.1

1693

47.9

1589

45.0

1478

41.9

1366

38.7

1235

35.0

Med

1682

47.6

1657

46.9

1606

45.5

1530

43.3

1455

41.2

1366

38.7

1265

35.8

1137

32.2

Low

1235

35.0

1235

35.0

1235

35.0

1235

35.0

1198

33.9

1154

32.7

1083

30.7

987

27.9

100/80 (29.3/23.4)

1

C

High

2122

60.1

2027

57.4

1916

54.3

1821

51.6

1717

48.6

1590

45.0

1462

41.4

1312

37.2

Med

1667

47.2

1696

48.0

1656

46.9

1597

45.2

1523

43.1

1438

40.7

1330

37.7

1191

33.7

Low

1130

32.0

1145

32.4

1177

33.3

1194

33.8

1181

33.4

1146

32.5

1077

30.5

982

27.8

100/80 (29.3/23.4)

2

D

High

2350

66.5

2248

63.7

2129

60.3

2015

57.1

1876

53.1

1745

49.4

1596

45.2

1425

40.4

Med-High

2122

60.1

2018

57.1

1926

54.5

1824

51.6

1722

48.8

1606

45.5

1458

41.3

1311

37.1

Med-Low

1958

55.4

1875

53.1

1782

50.5

1690

47.9

1608

45.5

1491

42.2

1364

38.6

1213

34.3

Low

1820

51.5

1757

49.8

1664

47.1

1594

45.1

1506

42.6

1405

39.8

1287

36.4

1137

32.2

125/100(36.6/29.3)

2

D

High

2483

70.3

2392

67.7

2282

64.6

2161

61.2

2032

57.5

1887

53.4

1739

49.2

1567

44.4

Med-High

2198

62.2

2123

60.1

2039

57.7

1930

54.7

1830

51.8

1708

48.4

1550

43.9

1413

40.0

Med-Low

1999

56.6

1916

54.3

1859

52.6

1778

50.3

1684

47.7

1576

44.6

1451

41.1

1315

37.2

Low

1832

51.9

1775

50.3

1709

48.4

1642

46.5

1556

44.1

1450

41.1

1335

37.8

1209

34.2

150/120(44.0/35.2)

2

D

High

2570

72.8

2462

69.7

2361

66.9

2244

63.5

2128

60.3

1983

56.2

1826

51.7

1655

46.9

Med-High

2205

62.4

2105

59.6

2033

57.6

1952

55.3

1865

52.8

1738

49.2

1617

45.8

1459

41.3

Med-Low

1993

56.4

1931

54.7

1869

52.9

1880

53.2

1708

48.4

1590

45.0

1485

42.1

1330

37.7

Low

1831

51.8

1782

50.5

1722

48.8

1660

47.0

1575

44.6

1477

41.8

1364

38.6

1231

34.9

BOTTOM/END RETURN

50/40 (14.7/11.7)

1

B

High

1419

40.2

1357

38.4

1297

36.7

1212

34.3

1131

32.0

1050

29.7

942

26.7

846

24.0

Med

1221

34.6

1185

33.6

1145

32.4

1092

30.9

1036

29.3

961

27.2

879

24.9

780

22.1

Low

920

26.1

902

25.5

883

25.0

860

24.4

818

23.2

761

21.5

711

20.1

639

18.1

75/60 (22.0/17.6)

1

B

High

1552

43.9

1491

42.2

1420

40.2

1348

38.2

1271

36.0

1185

33.6

1080

30.6

970

27.5

Med

1229

34.8

1237

35.0

1198

33.9

1164

33.0

1105

31.3

1039

29.4

956

27.1

861

24.4

Low

889

25.2

892

25.3

879

24.9

866

24.5

846

24.0

807

22.9

760

21.5

689

19.5

75/60 (22.0/17.6)

1

C

High

1946

55.1

1862

52.7

1775

50.3

1620

45.9

1518

43.0

1409

39.9

1291

36.6

1160

32.8

Med

1683

47.7

1611

45.6

1551

43.9

1484

42.0

1388

39.3

1300

36.8

1190

33.7

1080

30.6

Low

1110

31.4

1138

32.2

1175

33.3

1190

33.7

1175

33.3

1126

31.9

1041

29.5

937

26.5

100/80 (29.3/23.4)

1

C

High

1997

56.5

1920

54.4

1822

51.6

1723

48.8

1620

45.9

1500

42.5

1355

38.4

1211

34.3

Med

1728

48.9

1679

47.5

1635

46.3

1556

44.1

1465

41.5

1359

38.5

1249

35.4

1117

31.6

Low

1131

32.0

1156

32.7

1181

33.4

1190

33.7

1171

33.2

1126

31.9

1049

29.7

926

26.2

100/80 (29.3/23.4)

2

D

High

2327

65.9

2232

63.2

2121

60.1

1999

56.6

1888

53.5

1763

49.9

1628

46.1

1473

41.7

Med-High

2050

58.0

1967

55.7

1868

52.9

1757

49.8

1658

46.9

1525

43.2

1403

39.7

1260

35.7

Med-Low

1911

54.1

1839

52.1

1758

49.8

1675

47.4

1593

45.1

1468

41.6

1340

37.9

1189

33.7

High

1780

50.4

1712

48.5

1642

46.5

1566

44.3

1465

41.5

1366

38.7

1249

35.4

1094

31.0

125/100(36.6/29.3)

2

D

High

2397

67.9

2304

65.2

2192

62.1

2063

58.4

1955

55.4

1822

51.6

1678

47.5

1521

43.1

Med-High

2151

60.9

2063

58.4

1977

56.0

1881

53.3

1774

50.2

1652

46.8

1528

43.3

1377

39.0

Med-Low

1972

55.8

1906

54.0

1838

52.0

1748

49.5

1660

47.0

1551

43.9

1419

40.2

1282

36.3

Low

1845

52.2

1794

50.8

1721

48.7

1646

46.6

1559

44.1

1451

41.1

1344

38.1

1208

34.2

150/120(44.0/35.2)

2

D

High

2488

70.5

2389

67.6

2276

64.4

2151

60.9

2024

57.3

1883

53.3

1730

49.0

1577

44.7

Med-High

2164

61.3

2084

59.0

2024

57.3

1920

54.4

1816

51.4

1692

47.9

1558

44.1

1395

39.5

Med-Low

1998

56.6

1934

54.8

1868

52.9

1773

50.2

1673

47.4

1567

44.4

1445

40.9

1294

36.6

Low

1843

52.2

1793

50.8

1728

48.9

1653

46.8

1553

44.0

1453

41.1

1328

37.6

1192

33.8

1.

Return air is through side opposite motor (left side)

.

2. Airflows above 1800 CFM (50.97 m3/min) require either return from two sides or one side plus bottom
3. Airflows expressed in standard cubic feet per minute (CFM) and in cubic meters per minute (m

3

/min).

Содержание G8C

Страница 1: ...orizontal Configuration 5 Vent Blower 5 Top Cap 6 Dimensions 7 Combustible Floor Base Accessory 8 Typical Attic Installation 9 Typical Suspended Furnace Crawl Space Installation 9 Side Return Cutout Markings 10 Horizontal Mount and Filter 10 Downflow Filter 10 Return Filter Grill and Return Duct Installation 11 Gas Valve 11 Upflow Configuration 50 125 MBH Model Only 12 Downflow Configuration 50 12...

Страница 2: ...e within the stated rise range as indicated on the furnace rating plate and the firing input rate must be set to the unit nameplate value e The external static pressure of the air distribution system ductwork must at set for heating operation to be at least 0 10 to 0 20 inches water column based on the input rate of the furnace with the lower value for input rates less than 55 000 btu hr and the u...

Страница 3: ...ized with the air distribution as possible 3 Where adequate combustion air will be available particularly when the appliance is not using outdoor combustion air 4 Where it will not interfere with proper air circulation in the confined space 5 Where the outdoor vent terminal will not be blocked or restricted Refer to VENT CLEARANCES located in SECTION VII of these instructions These minimum clearan...

Страница 4: ...ALLATION POSITION 150 MBH Models This furnace may be installed in an upflow or horizontal position No conversion is necessary This furnace is not approved for downflow application CONVERSION INFORMATION 50 125 MBH Models This furnace may be shipped in either the upflow or the downflow con figuration To convert from upflow to downflow or vice versa it is neces sary only to exchange the top and bott...

Страница 5: ...p cap See Figure 4 15 Install the top cap at the same end of the furnace as the vent blower using the sheet metal screws saved earlier See Figure 1 16 Install the bottom cap on the bottom of the furnace using the sheet metal screws saved earlier See Figure 1 17 The conversion is now complete The furnace may now be installed in the upflow position or in the horizontal position on either side TO CON...

Страница 6: ...ar ducts attached to the plenum and there are two 7 inch round ducts attached to the furnace 1 Take 8 x 14 which equals 112 sq in X 2 which equals 224 square inch then go to round duct size located in Table 2 2 The square inch area for 7 inch round pipe is 38 4 multiply by 2 for two round ducts which equals 76 8 square inch 3 Then take the 224 square inch from the rectangular duct and add it to th...

Страница 7: ...incorrect gas orifice and or a faulty limit switch can cause the furnace to operate above the maximum supply air temperature Refer to sections II III and IX for additional informa tion on correcting the problem FIGURE 5 Dimensions DOWNFLOW UPFLOW A A B E D BOTTOM VIEW F G 29 3 4 29 3 4 C 31 1 2 31 1 2 14 BOTTOM VIEW H J 16 1 4 TABLE 4 Cabinet and Duct Dimensions BTUH kW Input Output Nominal CFM m3...

Страница 8: ...nstructions supplied with the duct con nector for proper installation Refer to the separate accessory parts list at the end of these instructions for the approved accessory duct con nectors When replacing an existing furnace if the existing plenum is not the same size as the new furnace then the existing plenum must be removed and a new plenum installed that is the proper size for the new furnace ...

Страница 9: ...ace then the existing plenum must be removed and a new plenum installed that is the proper size for the new furnace Attach the return plenum to the furnace inlet duct flanges This is typi cally through the use of S cleat material when a metal plenum is used The use of an approved flexible duct connector is recommended on all installations The connection of the plenum to the furnace and all the duc...

Страница 10: ... disposable filters Air velocity must not exceed 650 feet per minute through high velocity cleanable permanent filters Use of a filter that is too small will cause static pressure in the duct system to be too high which will have an adverse effect on heating and cooling operation Downflow Filters Downflow furnaces typically are installed with the filters located above the furnace extending into th...

Страница 11: ...ducts rectangular ducts and or round ducts can be attached to the plenum Route the combustion air and the vent PVC pipes around the access panels for the filters 2 Install the filter s provided or you may install Permanent washable filters Filter should extend through the entire length of the filter rack to prevent air from bypassing the filter IMPORTANT Air velocity through throwaway type filters...

Страница 12: ...le tubing over the pres sure port so that the body of the port is inside the tubing 6 Use a reducer connector to connect the 3 8 0 9 cm ID flexible tube to a 1 4 0 9 cm ID flexible tube that is connected to a U tube manometer or digital pressure measuring equipment IMPORTANT The inlet gas pressure operating range table specifies what the minimum and maximum gas line pressures must be for the furna...

Страница 13: ...ll create an extremely dangerous condition resulting in premature heat exchanger failure excessive sooting high levels of carbon monoxide personal injury property damage a fire hazard and or death High altitude and propane LP conversions are required in order for the appliance to satisfactory meet the application An authorized distributor or dealer must make all gas conversions In Canada a certifi...

Страница 14: ... type cycle rate adjustments Follow the thermostat manufacturer s instructions IMPORTANT Set the heat anticipator in the room thermostat to 0 40 amps Setting it lower will cause short cycles Setting it higher will cause the room temperature to exceed the set points The 24 volt 40 VA transformer is sized for the furnace components only and should not be connected to power auxiliary devices such as ...

Страница 15: ...long this wire This communication makes the second furnace blower come on at the same time and on the same speed as the first furnace blower Single Wire Twinning Instructions Connect the control wiring as shown in the Figure 23 1 Connect the low voltage wiring from the wall thermostat to the ter minal strip on the control board of Furnace 1 2 Connect a wire from the TWIN terminal of Furnace 1 to t...

Страница 16: ...ll for first stage heat W1 signal from the wall thermo stat Furnace 1 will start the ignition sequence and the burners will light About thirty seconds after the burners light the blowers on both furnaces will come on in heating speed When the thermostat is satis fied the burners will shut off and after the selected blower off delay time both blowers will shut off at the same time On a call for sec...

Страница 17: ...ized standard or a masonry or concrete chimney lined with a material acceptable to the authority having jurisdiction Venting into an unlined masonry chimney or concrete chimney is prohibited Whenever possible B 1 metal pipe should be used for venting Where use of an existing chimney is unavoidable the following rules must be followed 1 The masonry chimney must be built and installed in accordance ...

Страница 18: ...PE FLUE PIPE BURNER ACCESS PANEL CELLAR WALL OPTIONAL SIDEWALL VENT SYSTEM field supplied TOP COVER VENT DAMPER FIGURE 31 Typical Chimney Connections FIGURE 32 Horizontal Air Inlet Outlet and Chimney Connections FURNACE WATER HEATER CHIMNEY OR GAS VENT OPENING OPENING FURNACE WATER HEATER OUTLET AIR DUCT INLET AIR DUCT TABLE 10 Horizontal Sidewall Venting Clearances Horizontal Vent Length Ft m wit...

Страница 19: ...t will not be affected by wind gusts light snow airborne leaves or allow recirculation of flue gases 4 Termination should be located where it will not be damaged or exposed to flying stones balls etc 5 Termination should be positioned where vent vapors are not objec tionable 6 Horizontal portions of the vent system must slope upwards and be supported to prevent sagging The vent system may be suppo...

Страница 20: ... manually adjustable louvers are not permitted for use 4 A automatically operated damper or automatically adjustable lou vers shall be interlocked so that the main burner cannot operate unless either the damper or the louver is in the fully open position FIGURE 34 Combustion Airflow Path Through The Furnace Casing to the Burner Box This type of installation requires that the supply air to the appl...

Страница 21: ...pliance unless otherwise permitted by the authority having jurisdiction The opening shall be located within 12 30 5 cm horizontally from the burner level of the appliance Refer to AIR SOURCE FROM OUTDOORS AND VENT AND SUPPLY AIR SAFETY CHECK in these instructions for additional information and safety check procedure 2 The duct shall be either metal or a material meeting the class 1 requirements of...

Страница 22: ...nted gas CARBON MONOXIDE POISONING HAZARD Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation could result in carbon monoxide poisoning or death The following steps shall be followed for each appliance connected to the venting system being placed into operation while all other appliances connected to the venting system are not i...

Страница 23: ...odule will energize open the main gas valve c After flame is established the supply air blower will start in about 30 seconds IMPORTANT Burner ignition may not be satisfactory on first startup due to residual air in the gas line or until gas manifold pressure is adjusted The ignition control will make 3 attempts to light before lock ing out With furnace in operation check all of the pipe joints ga...

Страница 24: ...re and temperature correction factor of 0 960 times 3600 then divided by the time it took to measure 0 0566 m3 of gas from the gas meter For Propane LP Gas multiply the Heat content of the gas MJ m3 or Default 93 14 times 0 00283 m3 of gas measured at the gas meter times a barometric pressure and temperature correction factor of 0 960 times 3600 then divided by the time it took to measure 0 0283 c...

Страница 25: ... wrench 10 Turn the electrical and gas supplies back on and with the burners in operation check for gas leakage around the gas valve pressure port for leakage using an approved gas detector a non corrosive leak detection fluid or other leak detection methods ADJUSTMENT OF TEMPERATURE RISE Be sure to relight any gas appliances that were turned off at the start of this input check TABLE 15 Inlet Gas...

Страница 26: ...al System Static Pressure ESP without the filter 4 Select a filter pressure drop from the table based upon the number of return air openings or return air opening size and add to the ESP from Step 3 to determine the total system static 5 If total system static matches a ESP value in the airflow table i e 0 20 w c 50 Pa 0 60 w c 150 Pa etc the system airflow cor responds to the intersection of the ...

Страница 27: ...ow 1820 51 5 1757 49 8 1664 47 1 1594 45 1 1506 42 6 1405 39 8 1287 36 4 1137 32 2 125 100 36 6 29 3 2 D High 2483 70 3 2392 67 7 2282 64 6 2161 61 2 2032 57 5 1887 53 4 1739 49 2 1567 44 4 Med High 2198 62 2 2123 60 1 2039 57 7 1930 54 7 1830 51 8 1708 48 4 1550 43 9 1413 40 0 Med Low 1999 56 6 1916 54 3 1859 52 6 1778 50 3 1684 47 7 1576 44 6 1451 41 1 1315 37 2 Low 1832 51 9 1775 50 3 1709 48 4...

Страница 28: ...32 UIM D 1205 Copyright by York International Corp 2005 All rights reserved Supersedes 66832 035 19991 001 Rev C 0805 Unitary 5005 Norman Product York OK Group Drive 73069 SECTION XI WIRING DIAGRAM FIGURE 40 Wiring Diagram Nov 18 2005 03 43PM a5kps v1 50 ...

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