PSD-3-443/c
COMMERCIAL WATER HEATER PARTS LIST
MODEL BTH-300A
SERIES 970/971
POWEREDANODEASSEMBLY
See Page 8
MODEL BTH-400A
SERIES 970
OPERATINGCONTROLWIRING
See Page 4
CYCLONEXHE-MODELBTH-300A/400A
See Page 2
GAS VALVE
See Page 5
RECIRCULATINGSYSTEM
See Page 5
BLOWER/BURNERASSEMBLY
See Page 7
EXHAUST ELBOW, VENT KIT & BLOWER
INTAKEPARTS
CONTROLPANEL
See Page 3
6
PRINTEDINU.S.A.0604
195788-001
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CYCLONE XHE BTH 300A/400A - CONTROL PANEL
BTH300A
970/971
BTH400A
970/971
Item
1
2
Description
Board, Display Panel ............................ 194808............ 194808
Bracket, Mounting Left ......................... 194123-1 ......... 194123-1
Bracket, Mounting Right........................ 194123............ 194123
Control Board, Cable Assembly
3
(includes 4 & 4A) .................................. 194811............ 195018
Control Board..................................... 194812............ 195010
Cable Assembly ................................ 194809............ 194809
Junction Box Assembly ........................ 194126............ 194126
JunctionBoxCover ................................. 2233 ............... 2233
Label, Display Pan
Label, Led ...........
Panel Front .........
Screw, Plastic.....
Switch,Off/On......
4
4A
5
6
7
8
9
10
11
CYCLONE XHE BTH 300A/400A - OPERATING CONTROLS & WIRING (See Next Page)
BTH 300A
970/971
BTH 400A
970/971
Item Description
1
2
3
4
5
7
8
9
10
Cable Assembly, Power Switch ..................................................................194785............ 194785
BlowerProverAirSwitch .............................................................................194706............ 195013
Box, Anode .................................................................................................194857............ 194857
Box, Junction ..............................................................................................194126............ 194126
Cable Assembly, Low Voltage ....................................................................194918............ 194918
Wire Harness ..............................................................................................194783............ 194783
Cable, Assembly - Controls ........................................................................194784............ 194784
Wire Assembly - Air Flow Switch.............................................................. 192802-2 ......... 192802-2
Wire Assembly - Air Flow Switch............................................................. 192802-1 ......... 192802-1
Control Board, Cable Assembly (Includes Item 11 & 11A) ..........................194811............ 195018
Control Board...........................................................................................194812............ 195010
Cable Assembly ......................................................................................194809............ 194809
DisplayBoard .............................................................................................194808............ 194808
ElectronicControl .......................................................................................194747............ 194747
Probe,Upper ...............................................................................................196597............ 196597
Probe,Lower ...............................................................................................196598............ 196598
Switch, Blocked Inlet ..................................................................................194911............ 195012
Switch, Blocked Outlet - NAT .....................................................................194910............ 194910
Switch, Blocked Outlet - LP........................................................................195017............ 195017
Pump,Recirculation....................................................................................194799............ 194799
Switch,On/Off.............................................................................................193243............ 193243
Switch, NAT, Low Gas Pressure............................................................. 191149-6 ......... 191149-6
Switch, LP ,Low Gas Pressure ................................................................. 191149-4 ......... 191149-4
Transformer .................................................................................................192608............ 192608
Valve,NaturalGas .................................................................................... 194536-5 ......... 194536-5
Valve, LP Gas ........................................................................................... 194536-6 ......... 194536-6
Tubing, 1/4" ID, PVC ...................................................................................193738............ 193738
CableAssembly, Igniter ..............................................................................194937............ 194937
11
11A
12
13
14
15
16
17
18
19
20
21
22
22
23
24
3
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DETAIL 2 - CYCLONE XHE BTH 300A - CONNECTIONS (Continued)
4
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RECIRCULATING SYSTEM
BTH 300A
970/971
BTH 400A
970/971
Item Description
1
2
3
4
5
6
7
8
9
Elbow, 3/4" Female - 3/4" Female........................................................... 194873 ................. 194873
Elbow, 3/4" Male - 1" Female ................................................................. 194872 ................. 194872
Hose, Flexible ......................................................................................... 194912 ................. 194912
Nipple, 3/4" - Pipe x 2"........................................................................... 194921-3 ..............194921-3
Nipple, 3/4" - Pipe x 4"........................................................................... 194921-2 ..............194921-2
Nipple, 3/4" - Pipe x close ..................................................................... 194921-1 ..............194921-1
Pump,Recirculation................................................................................ 194799 ................. 194799
Tee,Non-Reducing.................................................................................. 194870 ................. 194870
Tube, Closed End Dip ............................................................................. 194924 ................. 194924
Tube,Inlet ............................................................................................... 194820 ................. 194820
Vent, Automatic Air ................................................................................ 194830 ................. 194830
10
11
Standard hardware items may be purchased locally.
DETAIL 4 - GAS VALVE
BTH 300A
970/971
BTH 400A
970/971
Item
Description
1
2
3
4
Nipple, 3/4" - Pipe ...................................... 85040-18........ 85040-18
Nipple, 1/8" - Pipe ...................................... 192948-2........ 192948-2
Pipe, Union ................................................... 95515 ............ 95515
Switch, Low Gas Pressure ......................... 191149-6........ 191149-6
LP Gas .................................................... 191149-4....... 191149-4
Tee,Non-Reducing........................................ 40119 ............ 40119
Valve, NATGas ......................................... 194536-5........ 194536-5
Valve, LP Gas ............................................ 194536-6........ 194536-6
Orifice,NAT ............................................... 192477-7......... 192477
Orifice, LP.................................................. 192477-8........ 192477-9
Orificeholder ................................................ 192447 .......... 192447
5
6
7
8
Standard hardware items may be purchased locally.
5
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EXHAUST ELBOW, VENT KIT & BLOWER INTAKE PARTS
BTH 300A
970/971
BTH 400A
970/971
Item
Description
EXHAUSTELBOWANDFITTINGS
1
2
3
4
5
6
7
8
9
Adapter, Hose Fitting ....................................................................................................... 192472 .............. 192472
Elbow, 90° ....................................................................................................................... 194836 .............. 194836
Nipple, Pipe, Closed ........................................................................................................ 194558 .............. 194588
Plug, Hex......................................................................................................................... 194560 .............. 194560
Tee................................................................................................................................... 194559 .............. 194559
Tubing ............................................................................................................................191746-72 ........ 191746-72
Connector,Exhaust ......................................................................................................... 192636 .............. 192636
Hose Clamp, 3"................................................................................................................ 192696 .............. 192696
Hose Clamp, 4.5"............................................................................................................. 192697 .............. 192697
VENT KIT PARTS
10
11
12
13
14
15
Elboww/Screen ............................................................................................................... 192815 .............. 195009
Elbow, 45° x 3.5" dia........................................................................................................ 181901 .............. 181901
Screen ............................................................................................................................. 181662 .............. 195008
IntakeTerminal ................................................................................................................ 182167 .............. 182167
Wall Plates (2 Req'd) ....................................................................................................... 181557 .............. 181557
Silicone Sealer, 2 oz. tube ............................................................................................... 181564 .............. 181564
BLOWER INTAKE PARTS
16
17
18
19
Coupling ........................................................................................................................... 182094 .............. 182094
HoseClamp ..................................................................................................................... 194838 .............. 194838
Tube,Intake ..................................................................................................................... 194923 .............. 194923
VentTerminal,Intake ....................................................................................................... 192815 .............. 192815
# Dash number indicates inches.
* Not Illustrated.
192815
195009
6
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BLOWER/BURNER - ASSEMBLY
BTH 300A
970/971
BTH 400A
970/971
Item Description
1
2
3
4
5
6
7
8
9
Burner .................................................................................................. 194779 ................ 194998
Blower/MotorAssembly ....................................................................... 194746 ................ 194746
Flange-Burner ...................................................................................... 194960 ................ 194960
Gasket ................................................................................................. 194817 ................ 194817
Gasket, Burner .................................................................................... 194777 ................ 195016
Gasket-Viewport .................................................................................. 194827 ................ 194827
Ignitor ................................................................................................... 192334 ................ 192334
Screw, #8-18 x 1/2 ............................................................................... 192698 ................ 192698
Screw, Socket Head Cap ..................................................................... 192515 ................ 192515
Screw, Truss Hd. Mach 1/4-20 x 2.00 . ................................................ 194816 ................ 194816
Sensor, Flame ....................................................................................194776-1 .............194776-1
Window,Observation ...........................................................................98758-3 .............. 98758-3
10
11
12
Standard hardware items may be purchased locally.
7
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POWERED ANODE ASSEMBLY
BTH 300A
970/971
BTH 400A
970/971
Item Description
1
2
3
4
Anode .........................................................................................................194787............194787
Anode Wire, 28"..........................................................................................194925............194925
Control Box .................................................................................................194857............194857
LED w. Lead Wire .......................................................................................194959............194959
A.O. SMITH WATER PRODUCTS COMPANY
5621 W. 115TH STREET • ALSIP, ILLINOIS 60803
PHONE: 1-800-433-2545 • FAX: 1-800-433-2515
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