A.O. Smith 750 & 1000 - Manual (Page 10)

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Please update these numbers
LB/LW PROPANE GAS TRAIN ASSEMBLY - MODEL 1000
Item Description Part No.
1 ...... Valve, Main Gas, LP 300 Series .................. 77780
2 ...... Regulator, LP 301 Series ........................... 192460
3 ...... Valve, Firing ................................................. 3423-3
4 ...... Pipe Plug ....................................................... 3348
5 ...... Switch, Low Gas Pressure ....................... 191149-3
6 ...... Nipple, 1-1/4” ............................................ 86505-13
7 ...... Nipple, 1-1/4” ............................................. 86505-2
8 ...... Nipple, 1-1/4” ........................................... 86505-17
9 ...... Elbow, Union 1-1/4” ..................................... 86506
Item Description Part No.
10 ...... Elbow, 90 Street 1-1/4” ................................. 94516
11 ...... Elbow, 90 1-1/4” ......................................... 192216
12 ...... Nipple, 1-1/4” w/Tapping .......................... 86505-32
13 ...... Nipple, 1-1/4” ............................................. 86505-6
14 ...... Nipple, 1-1/4” ............................................ 86505-4
15 ...... Tee, 1/8” NPT Branch .................................. 192465
16 ...... Connector, Angle 1/8” ................................... 1578
17 ...... Bleeder, Tube .............................................. 210016
18 ...... Bleeder, Tube .............................................. 192461
19 ...... Nipple, Close Stainless ........................... 191772-1
20 ...... Orifice, Union ....................... See Orifice Table Below
1 ........ Ball Valve ........................................................................ 191935
*2 ........ Tank/Pump Kit (LW Models) .......................................... 210625
3 ........ Hex Reducing Bushing (LB Model) .............................. 91940-8
4 ........ Flush Bushing (LB Model) ........................................... 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
LB/LW BY-PASS PARTS LIST - MODEL 1000
Item Description Part No.
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.
*Item Not Illustrated.
Propane Gas Size (In.) Elevation (Ft.)
192739 0.333 0 - 2000
192739-1 0.329 2001 - 3000
192739-2 0.325 3001 - 4000
LB/LW 1000 ORIFICE TABLE