LB/LW NATURAL GAS TRAIN/BLOWER ASSEMBLY- MODEL 750

Item

Description

Model 750

Item

Description

Model 750

1

Blower

191652-1

21 ....

Nut, Hex 1/4"

170272

 

2

Blower Adapter Assembly

191645

22 ....

Orifice, Air

192737-2

 

3

Blower Manifold Assembly

191832

23 ....

Orifice, Union (See Orifice Table Below)

*4

Bracket, Blower

191773

24 ....

Plug, 1/8" Pipe

3348

 

*5

Clamp, Hose

191794

*25 ....

Port, Observation Lower

191572

 

6

Elbow, 1"

1630

*26 ....

Port, Observation Upper

191572-1

 

7

Face Bushing 1"x1 1/4"

99376

27 ....

Screen, Air Inlet

192041

 

*9

Flange, Observation Port

191573

*28 ....

Screw, Cap 1/4"

190960-2

 

10

Gasket, Blower

191623

 

*29 ....

Srew, Flathead #8-32 x 1/2"

191542

 

*11

Gasket, Burner

191564

 

*30 ....

Screw, Flathead #8-32 x 3/4"

191542-1

 

12

Gasket, Manifold

191565

 

31 ....

Switch, Low Pressure

191149-1

 

*13

Gasket, Port (1/8" Thick)

191576-1

 

33 ....

Tee, 1/8"

40119

 

*14

Gasket, Port (1/16" Thick)

191576

 

*34 ....

Tee, Union

191633

 

15

Manifold Assembly

191610

 

*35 ....

Tubing, Pressure

191562

 

16

Nipple, Close 1/8"

191147-1

 

*36 ....

Tubing, Top Cover Assembly

191925

 

17

Nipple, Close Stainless

191772

 

*37 ....

U-Bolt Assembly

191938-1

 

18

Nipple, 1x4 1/2" with Tap

86397-14

 

38 ....

Valve, Main Gas

78481-3

 

19

Nipple, 1" x 9 1/2"

86397

 

*39 ....

Washer, Lock 1/4"

1006

 

20

Nipple, 1" x 2"

1177

 

40 ....

Valve, Solenoid Gas

192189

 

20A ...

Nipple, 1"x15 1/2"

86397-13

 

41 ....

Shutter, Blower

211694

 

20B ...

Nipple, 1 1/4" x 2"

86505-29

 

20C ..

Nipple, 1"xClose

1342

42 ....

Flange, Shutter

211695

 

20D ..

Nipple, 1"x4"

86397-7

43 ....

Manual Firing Valve

3423-4

 

*Item Not Illustrated.

 

 

 

 

 

 

 

 

 

 

DETAIL BACK VIEW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LEGEND ORIFICE TABLE

for boilers built on or after 6/01/02.

Model

Natural Gas

Size (In.)

Elevation (Ft.)

LB & LW-750

191884-11

0.464

0 - 2000

LB & LW-750

191884-12

0.450

2001 - 3000

LB & LW-750

191884-13

0.443

3001 - 4000

Note: Manual firing valve (item 43) used on US models made on or after 6/1/02.

LEGEND ORIFICE TABLE

Model

Natural Gas

Size (In.)

Elevation (Ft.)

LB & LW-750

191884-3

0.484

0 - 2000

LB & LW-750

191884-5

0.469

2001 - 3000

LB & LW-750

191884-7

0.461

3001 - 4000

6

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A.O. Smith LB/LW 1000 Blower Adapter Assembly, Blower Manifold Assembly, Clamp, Hose, Face Bushing 1x1 1/4, 20D Nipple

LB/LW 1000, LB/LW 500, LB/LW 700 specifications

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