A.O. Smith SLB/LW:1000 manual LB/LW Propane GAS Train Assembly, LB/LW BY-PASS Parts List

LB/LW PROPANE GAS TRAIN ASSEMBLY

Item	Description	Part No.	Item	Description	Part No.
1 ....	Valve, Main Gas, LP 300 Series	............. 77780	10 ....	Elbow, 90 Street 1-1/4”	94516
2 ....	Regulator, LP 301 Series	192460	11 ....	Elbow, 90 1-1/4”	192216
3 ....	Valve, Firing	3423-3	12 ....	Nipple, 1-1/4” w/Tapping	86505-32
4 ....	Pipe Plug	3348	13 ....	Nipple, 1-1/4”	86505-6
5 ....	Switch, Low Gas Pressure	191149-3	14 ....	Nipple, 1-1/4”	86505-4
6 ....	Nipple, 1-1/4”	86505-13	15 ....	Tee, 1/8” NPT Branch	192465
7 ....	Nipple, 1-1/4”	86505-2	16 ....	Connector, Angle 1/8”	1578
8 ....	Nipple, 1-1/4”	86505-17	17 ....	Bleeder, Tube	210016
9 ....	Elbow, Union 1-1/4”	86506	18 ....	Bleeder, Tube	192461

On LB models the circulating pump must be between the boiler inlet and the bypass (see figure below).

LW models have pump mounted inside the jacket.

Please update these numbers

	LB/LW BY-PASS PARTS LIST
Item	Description	Part No.
1	Ball Valve	191935
2	Tank/Pump Kit (LW Models Only - Not Shown)	210625
3	Hex Reducing Bushing (LB Only)	91940-8
4	Flush Bushing (LB Only)	192163-2
5	Relief Valve (LW Model)	98883-3
......	Relief Valve (LB Model)	210451-2
6	Strap, Cable (not shown)	99592-2
7	Tee, Condensate	192040-1
8	Tee (For use w/relief valve):
.............	LW Model	78685-4
.............	LB Model	191584
9	Tee 2"x2"x2"	191584
10	Tee 2"x2"x3/4"	78685-4
11	Valve, Drain	26273
12	Valve, Manual Shutoff	3423-3
13	Vent Patch Assembly	192161
14	Nipple (For use w/relief valve)
.............	LW Model	20373-12
.............	LB Model	92706-4
15	Clamp, Hose	191794-1

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