A.O. Smith 120 trough 500, Service Handbook

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BTR TANK TYPE HEATERS
SERVICE WORKBOOK
A.O. Smith Water Products Service Handbook
Irving, Texas ©2000 Training Department
50
PARTS LIST FOR BTR Models 120 Through 500(A)
Series 104 Through 109 Series
(Series 106/107 have a service switch on Circuit Board 6522; Series 108/109 have new
main burner production method. Both parts will automatically be shipped
on 104 thru 109 series heaters.)
Item Parts Description BTR-120 BTR-154 BTR-180 BTR-199 BTR-200 BTR-250
1 Main Burner, Orifice Bracket 98044(3) 98044(3) 98044(5) 98044(5) 98044(5) 98044(5)
2 Main Burner 192322 98047 192322 192322 192322 098047
3 Main Burner w/Pilot Bracket 193873-0 193873-1 193873-0 193873-0 193873-0 193873-0
4 Pilot Burner, Natural 193314-0 193314-0 193314-0 193314-0 R 193314-4
5 Pilot Burner, Propane 193314-1 193314-1 193314-1 193314-1 193314-1 193314-3
6 Gasket, Cleanout 99036 99036 99036 99036 99036 99036
7 Pressure Plate, Cleanout 99037 99037 99037 99037 99037 99037
8 Screw, Self tapping, Cleanout 69852 69852 69852 69852 69852 69852
9 Control, Ignition Module 193325 193325 193325 193325 193325 193325
10 Control, Dual w/eco 192828 192828 192828 192828 192828 192828
11 Drafthood 193597-0 193597-1 192957-0 192957-0 192957-0 193287
11 Drafthood 110, 111 Series
12 Manifold 76244-0 76244-0 76244-2 76244-2 76244-2 76244-2
13 Instruction Manual, (not illustrated) 193927 193927 193927 193927 193927 193927
14 Main Burner Orifice, Natural 76243-32 76243-30 76243-35 76243-32 76243-32 76243-xx
15 Main Burner, Orifice, Propane 76243-49 76243-46 76243-51 76243-49 76243-48 76243-xx
16 Anode Rod 43817-38 (2) 43817-38 (2) 43817-38 (4) 43817-38 (4) 180618-42 (3) 180618-42 (4)
17 T & P Relief Valve 99465-7 99465-7 99465-7 99465-7 99465-7 192467
18 Transformer 193444 193444 193444 193444 193444 193444
19 Inlet Tube 193729 192626 193729 193729 192626 192626
20 Gas Valve, Natural 192827-2 192827-2 192827-2 192827-2 192827-2 192827-2
21 Gas Valve, LP 192827-3 192827-3 192827-3 192827-3 192827-3 192827-3
22 Off/On Switch 193243 193243 193243 193243 193243 193243
Item Parts Description BTR-251 BTR-275 BTR-305 BTR-365 BTR-400 BTR-500
1 Main Burner, Orifice Bracket 98044(7) 98044(5) 98044(7) 98044(9) 98044(9) 98044(9)
2 Main Burner 98047 98047 192322 192322 192322 192322
3 Main Burner w/Pilot Bracket 193873-0 193873-1 193873-0 193873-0 193873-0 193873-0
4 Pilot Burner, Natural 193314-4 193314-4 193314-4 193314-4 193314-4 193314-4
5 Pilot Burner, Propane 193314-3 193314-3 193314-3 193314-3 193314-3 193314-3
6 Gasket, Cleanout 99036 99036 99036 99036 99036 99036
7 Pressure Plate, Cleanout 99037 99037 99037 99037 99037 99037
8 Screw, Self tapping, Cleanout 69852 69852 69852 69852 69852 69852
9 Control, Ignition Module 193325 193325 193325 193325 193325 193325
10 Control, Dual w/eco 192828 192828 192828 192828 192828 192828
11 Drafthood 193287 193287 193287 193287 193287 193287
11 Drafthood 110, 111 Series
12 Manifold 76244-3 76244-2 76244-3 76244-4 76244-4 76244-4
13 Instruction Manual, (not illustrated) 193927 193927 193927 193927 193927 193927
14 Main Burner Orifice, Natural 76243-xx 76243-xx 76243-37 76243-32 76243-31 76243-28
15 Main Burner, Orifice, Propane 76243-xx 76243-xx 76243-48 76243-49 76243-48 76243-44
16 Anode Rod 43817-38 (4) 180618-42 (3) 43817-38 (4) 180618-42(4) 180618-42 (3) 180618-42 (4)
17 T & P Relief Valve 192467 192467 192467 192467 192467 192467
18 Transformer 193444 193444 193444 193444 193444 193444
19 Inlet Tube NA 192626 NA 192626 192626 192626
20 Gas Valve, Natural 192827-2 192827-2 192827-2 192827-2 192827-2 193366-0
21 Gas Valve, LP 192827-3 192827-3 192827-3 192827-3 192827-3 193366-1
22 Off/On Switch 193243 193243 193243 193243 193243 193243
∗
For complete parts list call 1-800-433-2545