AO Smith Water Heater 976 Series User Manual

COMMERCIAL WATER HEATER PARTS LIST  
Model BTH-300A  
Model BTH-400A  
POWERED ANODE ASSEMBLY  
See Page 7  
Series 976/977  
OPERATING CONTROL WIRING  
See Page 3- 4  
CYCLONE XHE - MODEL BTH-300A/400A  
See Page 2  
BLOWER/BURNER ASSEMBLY  
See Page 5  
GAS VALVE  
See Page 5  
CONTROL PANEL  
See Page 3  
EXHAUST ELBOW, VENT KIT & BLOWER  
INTAKE PARTS  
See Page 6  
PRINTED IN U.S.A. 0606  
PART NO. 197177-002  
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CYCLONE XHE BTH 300A/400A - OPERATING CONTROLS & WIRING (See Next Page)  
BTH 300A  
976/977  
BTH 400A  
976/977  
Item Description  
1
2
Switch, On/Off ....................................................................................... 9005929215 ... 9005929215  
VFD & Control Assembly ..............................................................................------.......... 9006081205  
Transformer........................................................................................... 9004515205 ... 9004515205  
Probe, Upper ......................................................................................... 9004238215 ... 9004238215  
Probe, Lower ......................................................................................... 9004241215 ... 9004241215  
Display Board ........................................................................................ 9004593205 ... 9004593205  
Cable Assembly .................................................................................... 9006082215 ... 9006082215  
Switch, Blocked Inlet ............................................................................. 9006083215 ... 9006006215  
Blower Prover Air Switch ....................................................................... 9004586215 ... 9006002215  
Switch, Natural Low Gas Pressure ........................................................ 9006084215 ... 9006084215  
Switch, LP Low Gas Pressure ............................................................... 9004474215 ... 9004474215  
Valve, Natural Gas ................................................................................ 9006085205 ... 9006085205  
Valve, LP Gas ....................................................................................... 9006086205 ... 9006086205  
Switch, Blocked Outlet .......................................................................... 9006087215 ... 9006088215  
Tubing, 1/4" ID, PVC ............................................................................. 9006089215 ... 9006089215  
3
4
5
6
7
8
9
10  
10  
11  
11  
12  
13  
3
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CYCLONE XHE BTH 300A/400A - CONNECTIONS (Continued)  
4
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GAS VALVE  
BTH 300A  
976/977  
BTH 400A  
976/977  
Item Description  
1
2
3
4
Switch, Low Gas Pressure .... 9006084215 ...........9006084215  
LP Gas .................................. 9004474215 ...........9004474215  
Valve, NAT Gas .................... 9006085205 ...........9006085205  
Valve, LP Gas ....................... 9006086205 ...........9006086205  
Orifice, NAT .......................... 9006090215 ...........9006091215  
Orifice, LP ............................. 9006092215 ...........9006093215  
Orifice holder ........................ 9006094215 ...........9006094215  
Standard hardware items may be purchased locally.  
BLOWER/BURNER ASSEMBLY  
BTH 300A  
976/977  
BTH 400A  
976/977  
Item Description  
1
2
3
4
5
6
7
8
9
Gasket - 8" ...................................... 9006095205 .... 9006095205  
Shield - Heat ................................... 9006096205 .... 9006096205  
Gasket - Insulation .......................... 9006097205 .... 9006097205  
Flange - Burner ............................... 9006098205 .... 9006098205  
Burner Assembly............................. 9006099205 .... 9006099205  
Gasket - Burner .............................. 9006100205 .... 9006100205  
Ignitor .............................................. 9006101205 .... 9006101205  
Window - Observation..................... 9006102215 .... 9006102215  
Gasket - Viewport ........................... 9006103215 .... 9006103215  
10 Screw - Socket Head Cap............... 9006104215 .... 9006104215  
11 Blower/Motor ................................... 9006105205 .... 9006114205  
12 Sensor - Flame ............................... 9006106205 .... 9006106205  
13 Coupling - Power Vent .................... 9006107205 .... 9006107205  
14 Blower Intake Reducer Assembly. .. 9006108205 .... 9006108205  
5
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EXHAUST ELBOW, VENT KIT & BLOWER INTAKE PARTS  
BTH 300A  
976/977  
BTH 400A  
976/977  
Item  
Description  
EXHAUST ELBOW AND FITTINGS  
1
2
3
Exhaust Elbow Assembly ............................................................................................ 9006109205..... 9006109205  
Tubing ......................................................................................................................... 9006110215..... 9006110215  
Connector, Exhaust ..................................................................................................... 9006111205..... 9006111205  
VENT KIT PARTS  
4
5
6
Intake/Vent Terminal ................................................................................................... 9006112205..... 9006112205  
Wall Plates (2 required)............................................................................................... 9006113205..... 9006113205  
Silicone Sealer, 2 oz. tube ............................................................................................... 181564............. 181564  
6
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POWERED ANODE ASSEMBLY  
BTH 300A  
976/977  
BTH 400A  
976/977  
Item Description  
1
2
3
Anode ........................................................................................................ 194787 .......... 194787  
Control Box............................................................................................ 9004595205 .. 9004595205  
LED w. Lead Wire ..................................................................................... 194959 .......... 194959  
7
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A.O. Smith Water Heater Parts Fulfillment  
125 Southeast Parkway  
Franklin, TN 37068  
1-800-433-2545  
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