A.O. Smith 750 & 1000 Replacement Parts List Manual Download

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LB/LW WIRING CHART

LB/LW CONTROL BOARD WHC 1502

Part Number 210128

WHC1502

COLOR

GAUGE

PART NUMBER ***

White

41974

Black

99650

Green

41972

White

86580

Black

86578

Green

69058

White

170595

Black

170596

Green

170606

Blue

191719

Red

170603

Yellow

170604

Brown

170890

White/Red

191700

White/Yellow

191702

White/Black

191699

Black/White

191694

Yellow/Blue

191708

Red/Green

191717

*** Use dash number to indicate length of wire.
Example: 20 inch long red wire would be expressed as 170603-20.

Summary of Contents for 750 & 1000

Page 1: ...s 5 7 PROPANEGASTRAINASSEMBLY See pages 8 10 WATERWAYS COMBUSTION CHAMBER See page 2 EXHAUST DRAIN ASSEMBLY See page 3 BY PASS See pages 8 10 WIRING HARNESS PROBES See page 12 JACKET FRAMEASSEMBLY See page 4 CONTROLBOARD See page 11 WATERINLET See page 3 PSD 3 153 COMMERCIAL POWER BURNER BOILER REPLACEMENT PARTS LIST COPPERBOILERSFORHYDRONIC HEATING HOT WATER SUPPLY LEGEND MODELS LB LW 500 750 100...

Page 2: ...08 210404 7 Gasket Outer 211594 1 211594 1 211594 1 8 Gasket Burner 191564 1 191564 1 191564 1 9 Gasket Inner 211594 211594 211594 10 Housing Assembly 211742 211742 1 211742 2 11 Ignitor 192334 192334 192334 12 Insulation Burner 191618 191618 191618 13 Nut Manifold 191555 191555 191555 1 14 O Ring 191556 191556 191556 2 15 Probe Outlet Temp ECO 210572 210572 210572 16 Probe Inlet Temp 210571 21057...

Page 3: ...6 1 191556 1 14 Plate Drain Seal 191626 191626 191626 15 Pump Assembly Circulator LW Models 211611 211612 211538 16 Tube Assembly Inlet LW Models 210897 1 210897 2 192308 17 Tube Assembly Primary LB Models 210901 210901 192225 18 Tube Assembly Primary LW Models 210900 210900 192388 19 Tubing Condensate 191746 24 191746 24 191746 24 20 Tubing Pressure 191562 26 191562 26 191562 26 21 U Bolt Assembl...

Page 4: ...Side 191796 1 191796 1 191796 3 16 Panel Assembly Right Side 191796 191796 191796 2 17 Panel Lower Front 191805 191805 191805 1 18 Panel Rear Natural 191748 191748 1 192191 Panel Rear Propane 191748 191748 4 210020 19 Panel Top Cover 191609 191609 191609 1 20 Plate Rear Cover 1000 Model Only 210214 21 Screw Hex Head 5 16 210125 210125 210125 22 Screw Hex Head 6 32 210206 210206 210206 23 Switch Bl...

Page 5: ...ring Valve 3423 4 Item Not Illustrated DETAILBACKVIEW Note Manual firing valve item 43 used on US models made on or after 6 1 02 1 Blower 211613 2 Blower Adapter Assembly 191645 3 Blower Manifold Assembly 191832 4 Bracket Blower 191773 5 Clamp Hose 191794 6 Elbow 1 1630 7 Elbow Union 1 2482 1 8 Elbow Street 1 190763 9 Flange Observation Port 191573 10 Gasket Blower 191623 11 Gasket Burner 191564 1...

Page 6: ...le Below 24 Plug 1 8 Pipe 3348 25 Port Observation Lower 191572 26 Port Observation Upper 191572 1 27 Screen Air Inlet 192041 28 Screw Cap 1 4 190960 2 29 Srew Flathead 8 32 x 1 2 191542 30 Screw Flathead 8 32 x 3 4 191542 1 31 Switch Low Pressure 191149 1 33 Tee 1 8 40119 34 Tee Union 191633 35 Tubing Pressure 191562 36 Tubing Top Cover Assembly 191925 37 U Bolt Assembly 191938 1 38 Valve Main Ga...

Page 7: ... 2 22 Nipple 1 1 4 x 4 86505 6 23 Nut Hex 1 4 191817 1 Item Description Model 1000 24 Orifice Air Series 300 Nat Gas 192737 3 24 Orifice Air Series 30211 L P Gas 192737 2 25 Orifice Union See Orifice Table Below 26 Plug 1 8 Pipe 3348 27 Port Observation Lower 191572 28 Port Observation Upper 191572 1 29 Screen Air Inlet 192220 1 30 Screw Cap 1 4 190960 2 31 Srew Flathead 8 32 x 1 2 191542 32 Screw...

Page 8: ...cription Model 500 1 Ball Valve 191935 2 Hex Reducing Bushing LW Models for use w Relief Valve 91940 1 3 Relief valve LB Model 210451 LW Model 98883 3 4 Tee 2 x 2 x 1 78685 2 5 Tee 2 191584 6 Tee 2 x 2 x 2 78685 4 7 Valve Drain 26273 8 Valve Manual Shutoff 9 Orifice Gas Assembly See Orifice Table 10 Tube Condensate 191746 120 11 Strap Cable 99592 2 LB LW BY PASS PARTS LIST MODEL 500 Please update ...

Page 9: ...se Stainless 191772 21 Orifice Union See Orifice Table Below Item Description Model 750 1 Ball Valve 191935 2 Hex Reducing Bushing LW Models for use w Relief Valve 91940 1 3 Relief valve LB Model 210451 1 LW Model 98883 3 4 Tee 2 x 2 x 1 78685 2 5 Tee 2 191584 6 Tee 2 x 2 x 2 78685 4 7 Valve Drain 26273 8 Valve Manual Shutoff 3423 3 9 Orifice Gas Assembly See Orifice Table 10 Tube Condensate 19174...

Page 10: ... 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 Shutof...

Page 11: ... 16 86578 Green 16 69058 White 18 170595 Black 18 170596 Green 18 170606 Blue 18 191719 Red 18 170603 Yellow 18 170604 Brown 18 170890 White Red 18 191700 White Yellow 18 191702 White Black 18 191699 Black White 18 191694 Yellow Blue 18 191708 Red Green 18 191717 Use dash number to indicate length of wire Example 20 inch long red wire would be expressed as 170603 20 ...

Page 12: ...210574 2 Nat Prop Model 500 A O SMITH WATER PRODUCTS CO INC 5621 W 115TH STREET ALSIP ILLINOIS 60803 Phone 1 800 433 2545 Fax 1 800 433 2515 Website www hotwater com Inlet Temperature Control Assembly 210571 Tank Probe LW Models 211541 1 22 16 Ga 16 14 Ga 22 18 Ga 10 Stud 22 18 Ga LB LW WIRING AND HARNESS ASSEMBLY 78468 99593 6 78469 191673 42573 210091 210152 99599 2 Power Harness Assembly 210579...

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A.O. Smith 750 & 1000, Replacement Parts List Manual

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