For boilers built on or after 6/01/02, Description

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

Item	Description	Model 750	Item	Description	Model 750
1	Blower	211614	21 ....	Nut, Hex 1/4"	170272
2	Blower Adapter Assembly	191645	22 ....	Orifice, Air	192737-1
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.
					DETAILBACKVIEW

LEGEND ORIFICE TABLE

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

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

LEGEND ORIFICE TABLE