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
CYCLONE XHE BTH 300A/400A - PARTS LIST
BTH 300A
976/977
BTH 400A
976/977
Item Description
1
2
3
Cleanout Gasket ........ 9004099015 ....... 9004099015
Cover, Cleanout ......... 9004098005 ....... 9004098005
Temperature and
Pressure Relief Valve... 9005903205 ....... 9005903205
Standard hardware items may be
purchased locally.
2
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
CYCLONE XHE BTH 300A/400A - CONNECTIONS (Continued)
4
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
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
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
A.O. Smith Water Heater Parts Fulfillment
125 Southeast Parkway
Franklin, TN 37068
1-800-433-2545
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