A.O. Smith 977 Series User Manual

Size:
162.38 Kb
Download

COMMERCIAL WATER HEATER PARTS LIST

Model BTH-300A

Model BTH-400A

POWERED ANODE ASSEMBLY Series 976/977

See Page 7

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

1

PART NO. 197177-002

CYCLONE XHE BTH 300A/400A - PARTS LIST

 

 

BTH 300A

BTH 400A

 

 

Item

Description

976/977

976/977

1

Cleanout Gasket ........

9004099015 .......

9004099015

2

Cover, Cleanout .........

9004098005 .......

9004098005

3

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

BTH 400A

 

 

Item

Description

976/977

976/977

1

Switch, On/Off .......................................................................................

9005929215 ...

9005929215

2

VFD & Control Assembly ..............................................................................

------ ..........

9006081205

3

Transformer ...........................................................................................

9004515205 ...

9004515205

4

Probe, Upper .........................................................................................

9004238215 ...

9004238215

5

Probe, Lower .........................................................................................

9004241215 ...

9004241215

6

Display Board ........................................................................................

9004593205 ...

9004593205

7

Cable Assembly ....................................................................................

9006082215 ...

9006082215

8

Switch, Blocked Inlet .............................................................................

9006083215 ...

9006006215

9

Blower Prover Air Switch .......................................................................

9004586215 ...

9006002215

10

Switch, Natural Low Gas Pressure ........................................................

9006084215 ...

9006084215

10

Switch, LP Low Gas Pressure ...............................................................

9004474215 ...

9004474215

11

Valve, Natural Gas ................................................................................

9006085205 ...

9006085205

11

Valve, LP Gas .......................................................................................

9006086205 ...

9006086205

12

Switch, Blocked Outlet ..........................................................................

9006087215 ...

9006088215

13

Tubing, 1/4" ID, PVC .............................................................................

9006089215 ...

9006089215

3

CYCLONE XHE BTH 300A/400A - CONNECTIONS (Continued)

4

GAS VALVE

 

 

BTH 300A

BTH 400A

 

 

Item

Description

976/977

976/977

1

Switch, Low Gas Pressure ....

9006084215 ...........

9006084215

 

LP Gas ..................................

9004474215 ...........

9004474215

2

Valve, NAT Gas ....................

9006085205 ...........

9006085205

 

Valve, LP Gas .......................

9006086205 ...........

9006086205

3

Orifice, NAT ..........................

9006090215 ...........

9006091215

 

Orifice, LP .............................

9006092215 ...........

9006093215

4

Orifice holder ........................

9006094215 ...........

9006094215

Standard hardware items may be purchased locally.

BLOWER/BURNER ASSEMBLY

 

 

BTH 300A

BTH 400A

 

 

Item

Description

976/977

976/977

1

Gasket - 8" ......................................

9006095205 ....

9006095205

2

Shield - Heat ...................................

9006096205 ....

9006096205

3

Gasket - Insulation ..........................

9006097205 ....

9006097205

4

Flange - Burner ...............................

9006098205 ....

9006098205

5

Burner Assembly .............................

9006099205 ....

9006099205

6

Gasket - Burner ..............................

9006100205 ....

9006100205

7

Ignitor ..............................................

9006101205 ....

9006101205

8

Window - Observation.....................

9006102215 ....

9006102215

9

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

BTH 400A

 

 

Item

Description

976/977

976/977

EXHAUST ELBOW AND FITTINGS

 

 

1

Exhaust Elbow Assembly ............................................................................................

9006109205 .....

9006109205

2

Tubing .........................................................................................................................

9006110215 .....

9006110215

3

Connector, Exhaust .....................................................................................................

9006111205 .....

9006111205

VENT KIT PARTS

 

 

4

Intake/Vent Terminal ...................................................................................................

9006112205 .....

9006112205

5

Wall Plates (2 required) ...............................................................................................

9006113205 .....

9006113205

6

Silicone Sealer, 2 oz. tube ...............................................................................................

181564 .............

181564

6

POWERED ANODE ASSEMBLY

 

 

BTH 300A

BTH 400A

Item

Description

976/977

976/977

1

Anode ........................................................................................................

194787 ..........

194787

2

Control Box ............................................................................................

9004595205 ..

9004595205

3

LED w. Lead Wire .....................................................................................

194959 ..........

194959

7

A.O. Smith Water Heater Parts Fulfillment

125 Southeast Parkway

Franklin, TN 37068

1-800-433-2545

www.hotwater.com

8