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035-19913-001 Rev. A (0404)

Unitary Products Group

11

SECTION III: REPLACEMENT PARTS LIST

7

13

7A

12

16

3

10

2

14

5

8

9

1,17

11

6

34

39

33

35

37

31

26

23

22

18

24

25

20

21

19

50

41

55

43

30

14

11

56

25

9

20

6

55

36

Summary of Contents for P*DU-"V"

Page 1: ...in fire or explosion A qualified service agency should be contacted to inspect the furnace and replace all gas controls control system parts electrical parts that have been wet or the furnace if deem...

Page 2: ...ontaining the furnace 4 Examine the furnace casing making sure the physical support is sound without sagging cracks or gaps Examine the furnace base making sure it is physically sound without cracks g...

Page 3: ...the OFF position Do not force See Figure 4 6 Wait five 5 minutes to clear out any gas If you then smell gas STOP Follow B in the safety information above If you don t smell gas go to next step 7 Move...

Page 4: ...uration you have look up the recommended filter size from Table 1 Removing Filters Internally Mounted Air Filters Most upflow furnaces have their filters located on the side or bottom of the furnace i...

Page 5: ...Switch 1LP is open The Inducer Motor is energized on high speed closing the con tacts of 1LP The Control checks that 1LP is closed The Inducer is switched to low speed The Igniter is energized for 17...

Page 6: ...provide the highest CFM Pin Position B and C are the medium and medium low CFM settings Pin Position D will provide the lowest CFM Refer to Table 16 in the installation manual for the proper HEAT Tap...

Page 7: ...so remove and discard these two screws located on each front corner of the blower assembly 3 Loosen the blower wheel set screw that secures the blower wheel to the blower motor shaft 4 Remove the moto...

Page 8: ...ix mounting screws that hold the vent motor to the restrictor plate The surface is gasketed and the gasket can be reused if it is carefully removed It is necessary to remove this assembly to gain acce...

Page 9: ...Dirty Filter Improperly sized duct system Incorrect blower speed selection Incorrect firing rate Faulty blower motor Faulty Control 6 Flash Reason 1LP has opened five times during one call for heat Ef...

Page 10: ...W INDUCER LOW STAGE PRESSURE SWITCH HSI 1ST STAGE MAIN VALVE FLAME SENSE LOW CIRCULATOR HEAT SPEED 1ST STAGE LOW PRESSURE SWITCH CLOSE RECOGNITION HSI WARM UP 17 SEC IGNITION ACTIVATION PERIOD 4 SEC T...

Page 11: ...9913 001 Rev A 0404 Unitary Products Group 11 SECTION III REPLACEMENT PARTS LIST 7 13 7A 12 16 3 10 2 14 5 8 9 1 17 11 6 34 39 33 35 37 31 26 23 22 18 24 25 20 21 19 50 41 55 43 30 14 11 56 25 9 20 6...

Page 12: ...MANIFOLD GAS 26 PAN BASE 27 28 29 30 WRAPPER BURNER BOX 31 CHANNEL TOE PLATE 32 33 PANEL FRONT Blower 34 PANEL FRONT Burner 35 PANEL TOP 36 SUPPORT BURNER 37 WRAPPER CABINET 38 39 PLUG WINDOW CLEAR 87...

Page 13: ...RESSURE SWITCH KIT DOES NOT INCLUDE ORIFICES FOR APPLICATION INFORMATION SEE FORM 650 78 N1 1V 1PS0314 REPLACEMENT PART CONTACT INFORMATION This is a generic parts list To request a complete parts lis...

Page 14: ...035 19913 001 Rev A 0404 14 Unitary Products Group SECTION IV WIRING DIAGRAM FIGURE 10 Wiring Diagram...

Page 15: ...035 19913 001 Rev A 0404 Unitary Products Group 15 NOTES...

Page 16: ...pplies only to products installed in the United States and Canada EXCLUSIONS This warranty does not cover any 1 Shipping labor or material charges 2 Damages resulting from transportation installation...

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