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035-20646-001 Rev. A (1004)

28

Unitary Products Group

NOTES:

1. Airflow expressed in standard cubic feet per minute (CFM) and in cubic meters per minute (m

3

/min).

2. Motor voltage at 115 V.

FILTER PERFORMANCE

The airflow capacity data published in Table 17 represents blower per-
formance WITHOUT filters. To determine the approximate blower per-
formance of the system, apply the filter drop value for the filter being
used or select an appropriate value from the Table 18.

NOTE: 

The filter pressure drop values in Table 18 are typical values for

the type of filter listed and should only be used as a guideline.
Actual pressure drop ratings for each filter type vary between fil-
ter manufacturers.

TABLE 17: 

Blower Performance CFM

AIRFLOW WITH TOP RETURN

MODELS

Speed

Tap

EXTERNAL STATIC PRESSURE, INCHES W.C. (kPa)

Input/

Output/

Airflow/

cabinet

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) 

0.9 (0.224)

1.0 (0.249)

CFM  m

3

/min CFM  m

3

/min CFM  m

3

/min CFM  m

3

/min CFM  m

3

/min CFM  m

3

/min CFM  m

3

/min CFM  m

3

/min CFM  m

3

/min CFM  m

3

/min

60/55/

1200/B

High

1687

48

1652

47

1631

46

1595

45

1557

44

1511

43

1456

41

1382

39

1313

37

1211

34

Medium High 1193

34

1183

33

1173

33

1162

33

1142

32

1115

32

1076

30

1036

29

982

28

950

27

Medium Low 933

26

933

26

921

26

911

26

902

26

872

25

825

23

793

22

771

22

712

20

Low

752

21

745

21

731

21

718

20

698

20

652

18

602

17

580

16

536

15

496

14

80/75/

1200/B

High

1686

48

1658

47

1623

46

1572

44

1534

43

1465

41

1391

39

1305

37

1202

34

1091

31

Medium High 1257

36

1223

35

1218

34

1203

34

1177

33

1142

32

1094

31

1026

29

939

27

874

25

Medium Low 977

28

982

28

976

28

955

27

934

26

899

25

843

24

791

22

738

21

686

19

Low

775

22

777

22

757

21

733

21

698

20

663

19

627

18

584

17

549

16

490

14

80/75/

1600/C

High

2071

59

2026

57

1981

56

1935

55

1864

53

1796

51

1713

48

1625

46

1532

43

1401

40

Medium High 1583

45

1590

45

1569

44

1554

44

1532

43

1502

43

1457

41

1409

40

1327

38

1221

35

Medium Low 1256

36

1275

36

1275

36

1288

36

1275

36

1265

36

1232

35

1187

34

1126

32

1023

29

Low

937

27

939

27

936

26

945

27

942

27

936

26

912

26

874

25

810

23

726

21

100/95/

1600/C

High

1996

56

1961

56

1938

55

1896

54

1836

52

1779

50

1707

48

1625

46

1531

43

1399

40

Medium High 1449

41

1480

42

1495

42

1488

42

1488

42

1449

41

1417

40

1368

39

1299

37

1208

34

Medium Low 1167

33

1192

34

1192

34

1187

34

1202

34

1192

34

1182

33

1140

32

1097

31

1018

29

Low

932

26

900

25

871

25

840

24

805

23

761

22

710

20

663

19

641

18

623

18

100/95/

2000/C

High

2404

68

2320

66

2225

63

2138

61

2034

58

1924

54

1816

51

1692

48

1559

44

1422

40

Medium High 2018

57

1955

55

1883

53

1815

51

1750

50

1670

47

1586

45

1497

42

1394

39

1246

35

Medium Low 1626

46

1581

45

1531

43

1488

42

1418

40

1363

39

1291

37

1225

35

1123

32

964

27

Low

1336

38

1291

37

1249

35

1205

34

1155

33

1091

31

1018

29

951

27

884

25

759

21

120/112/

2000/D

High

2520

71

2432

69

2353

67

2251

64

2152

61

2042

58

1947

55

1815

51

1701

48

1525

43

Medium  High 2018

57

1979

56

1945

55

1911

54

1863

53

1779

50

1705

48

1599

45

1493

42

1353

38

Medium Low 1586

45

1545

44

1501

42

1457

41

1407

40

1351

38

1287

36

1216

34

1081

31

926

26

Low

1321

37

1266

36

1213

34

1163

33

1111

31

1071

30

987

28

864

24

763

22

700

20

TABLE 18: 

Filter Performance - Pressure Drop Inches W.C. and (kPa)

AIRFLOW RANGE

MINIMUM 

OPENING SIZE

FILTER TYPE

DISPOSABLE

 WASHABLE FIBER

1

*

PLEATED

CFM

m

3

/m

 in

2

   

cm

2

In W.C.

kPA

In W.C.

kPA

In W.C..

kPA

0 - 750

0 - 21.4

230

584.2

0.01

0.00249

0.01

0.00249

0.15

0.03736

751 - 1000

21.25 - 28.32

330

838.2

0.05

0.01245

0.05

0.01245

0.20

0.04982

1001 - 1250

28.33 - 35.40

330

838.2

0.10

0.02491

0.10

0.02491

0.20

0.04982

1251 - 1500

35.41 - 42.48

330

838.2

0.10

0.02491

0.10

0.02491

0.25

0.06227

1501 - 1750

42.49 - 49.55

380

965.2

0.15

0.03736

0.14

0.03487

0.30

0.07473

1751 - 2000

49.56 - 56.63

380

965.2

0.19

0.04733

0.18

0.04484

0.30

0.07473

2001 & Above

56.64 - Above

463

1176.0

0.19

0.04733

0.18

0.04484

0.30

0.07473

1.

Washable Fibers are the type supplied with furnace (if supplied).

Summary of Contents for PS9

Page 1: ...n Kit Assembly 5 Dimensions 6 Accessory Downflow Filter Rack 7 Return Filter Grill and Return Duct Installation 7 Typical Attic Installation 8 Typical Suspended Furnace Crawl Space Installation 8 Gas...

Page 2: ...ational vehicles Failure to carefully read and follow all instructions in this manual can result in furnace malfunction death personal injury and or property damage Furnaces for installation on combus...

Page 3: ...nd repairs are performed Clearances for access Ample clearances should be provided to permit easy access to the unit The following minimum clearances are recommended 1 Twenty four 24 inches 61 cm betw...

Page 4: ...proper fur nace operation Use the Example below to help you in calculating the duct area to deter mine whether the ducts have sufficient area so that the furnace oper ates at the specified external s...

Page 5: ...T The furnace transition kit and the cooling coil cabinet MUST BE SEALED as needed to prevent leaks AND SECURED Refer to the assembly drawing in Figures 2 IMPORTANT On all installations without a coil...

Page 6: ...recommended on all installations The connection of the plenum to the furnace and all the ducts connecting to the plenum must be sealed to prevent air leakage The sheet metal should be crosshatched to...

Page 7: ...allation 1 Install the return filter rack on the top of the furnace return air opening Secure the filter rack to the front and back flanges with screws The return air plenum can be placed over the fil...

Page 8: ...RAMING FILTER RACK MUST BE A MINIMUM DISTANCE OF 18 45 7 cm FROM THE FURANCE COMBUSTION AIR GAS PIPING VENT PIPE maintain required clearances to combustible RETURN AIR SUPPLY AIR 12 CLEARANCE FOR SERV...

Page 9: ...ere the altitude is greater than 2 000 ft 610 m above sea level on natural gas or the altitude is greater than 4 000 ft 1219 m above sea level on propane LP gas Refer to Table 7 or the instructions in...

Page 10: ...ion leads and wiring box may be relo cated to the left side of the furnace Remove the screws and cut wire tie holding excess wiring Reposition on the left side of the furnace and fas ten using holes p...

Page 11: ...an what one furnace can deliver twinning can be used to make two furnaces operate in tandem When two furnaces are installed using the same duct system it is very important that the two furnace cir cul...

Page 12: ...Cooling On a call for cooling Y signal from the wall thermostat both furnace blowers will come on at the same time in cooling speed When the thermostat is satisfied both blowers will stay on for 60 se...

Page 13: ...5 elbows in the combustion air piping and a maximum of 5 elbows in the vent piping 4 Three vent terminal elbows two for vent pipe and one for air intake pipe are already accounted for as vent terminat...

Page 14: ...cement must conform to ASTM D2564 for PVC or ASTM D2235 for ABS piping 7 All joints must provide a permanent airtight and watertight seal 8 Support the combustion air and vent piping such that it is a...

Page 15: ...ion2 A Clearance above grade veranda porch deck or balcony 12 inches 30 cm 12 inches 30 cm B Clearance to window or door that may be opened 6 inches 15 cm for applications 10 000 Btuh 3kW 12 inches 30...

Page 16: ...eet elbow on the vent connec tion 2 Place the 2 5 08 cm PVC WYE Y assembly on the 2 5 08 cm 45 PVC street elbow 3 Locate the rubber condensate hose in front of the blower access panel 4 Slide the hose...

Page 17: ...TION AIR This is a sealed combustion air configuration where the combustion air is supplied through a PVC or ABS pipe that is connected to the PVC coupling attached to the burner box and is terminated...

Page 18: ...ea of a specific louver or grille is not known refer to Table 10 to estimate free area Do not use less than 1 4 0 635 cm mesh Free area or louvers and grilles varies widely the installer should follow...

Page 19: ...materials in the SEALED COM BUSTION AIR SUPPLY section in these instructions when installing the combustion air pipe from the unit and into a ventilated attic space or crawl space DO NOT terminate ven...

Page 20: ...w the heat tape manufacturer s recommendations CONDENSATE DRAIN HOSE PART NUMBERS DOWNFLOW HORIZONTAL CONDENSATE INTERNAL DRAIN CONFIGURATIONS Downflow Furnace is shipped with one end of condensate ho...

Page 21: ...all hose 6 between the top drain of the rain gutter of the inducer and the remaining open end of 3 8 barbed tee 13 Ensure that all hoses are properly installed have no kinks and are draining properly...

Page 22: ...er smaller dogleg end of hose 10 should be installed into the large recessed drain in the condensate trap 7 Install the condensate trap bracket with the condensate trap on to the front side of the fur...

Page 23: ...n air blower heat exchanger or a blocked vent pipe connection Corrective action is required These are manual reset controls that must be reset before operation can continue PRESSURE SWITCHES This furn...

Page 24: ...will start and come up to speed Shortly after inducer start up the hot surface igniter will glow for about 17 seconds b After this warm up the ignition module will energize open the main gas valve c...

Page 25: ...ivided by the time it took to measure 2 cubic ft 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...

Page 26: ...gas valve as described in E above There will be no second connection to the manometer as it will reference atmo spheric pressure Refer to Figure 36 for connection details IMPORTANT The cap for the pre...

Page 27: ...by positioning the jumper on two of the four positions as shown in Figure 38 The furnace control board also allows user selection of the blower speed that is energized during continuous fan operation...

Page 28: ...4 1554 44 1532 43 1502 43 1457 41 1409 40 1327 38 1221 35 Medium Low 1256 36 1275 36 1275 36 1288 36 1275 36 1265 36 1232 35 1187 34 1126 32 1023 29 Low 937 27 939 27 936 26 945 27 942 27 936 26 912 2...

Page 29: ...peed blower it is found that total system static is 0 58 w c To determine the system airflow complete the following steps 1 Obtain the airflow values at 0 50 0 60 ESP Airflow 0 50 2125 CFM Airflow 0 6...

Page 30: ...035 20646 001 Rev A 1004 30 Unitary Products Group SECTION XII WIRING DIAGRAM FIGURE 39 Wiring Diagram...

Page 31: ...035 20646 001 Rev A 1004 Unitary Products Group 31 NOTES...

Page 32: ...to change without notice Printed in U S A 035 20646 001 Rev A 1004 Copyright by York International Corp 2004 All rights reserved Supersedes Nothing Unitary 5005 Norman Product York OK Group Drive 7306...

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