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ULLETINULLETIN
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ULLETIN
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PSD - Alsip, Illinois
Date: December 20, 1999 No. 137 Rev. 2
Subject: Gas Water Heater Conversion Policy
To: All Accounts
* This supersede all previous letters and field bulletins concerning residential and commercial water heater conversion.
ULLETINULLETIN
TERTER
TER
TERTER
GAS WATER HEATER CONVERSION POLICY
All A.O. Smith Water Products Company’s residential and commercial gas water heaters are designed certified by CSA or UL,
under ANSI Standards for operation on one type of gas only, as indicated on the water heater’s model number and rating
plate.
A.O. Smith realizes that there may be certain situations where a field conversion may be necessary and in order to facilitate
such a conversion, A. O. Smith complies with CSA or UL regulations ensuring that a field conversion be appropriately and
safely completed.
An improper field conversion from one type of gas to another could cause potentially dangerous conditions that may cause an
explosion or fire resulting in property damage, bodily injury or both.
A.O. SMITH WILL ONLY ALLOW THE CONVERSION OF GAS WATER HEATERS FROM LP GAS (PROPANE) TO
NATURAL GAS. THE CONVERSION OF A GAS WATER HEATER FROM NATURAL GAS TO LP GAS (PROPANE) IS
NOT ALLOWED UNDER ANY CIRCUMSTANCES.
A.O. Smith will provide kits as demand warrants through our Parts Department, phone no.
1-800-433-2545. Prices, dimensions and specifications are subject to change without notice.
Each conversion kit is to be installed by an A.O. Smith service agent or a gas utility serviceman in accordance with
A.O. Smith’s written instructions and all codes and requirements of the authority having jurisdiction. Failure to follow
instructions could result in serious injury or property damage. The utility performing this work assumes responsibility for
this conversion.
Changing the Input on Gas Water Heaters
The only changes to the input of a gas water heater allowed are:
• Adjustments to match that shown on the rating plate of the heater. The installation instructions supplied with the
heater indicate if adjustments to input are a required procedure.
• Changes made as required to adjust the heater for proper operation at high altitude as determined by a qualified
service technician. Service manuals include the proper procedure for adjusting heaters at high altitudes.
Conversion of Gas Water Heaters
The conversion of LP gas (Propane) to Natural gas is ONLY allowed providing:
• The conversion is done as part of a gas utility’s program where propane appliances were installed anticipating the
completion of natural gas service to the area. The conversion must be done under the direct supervision of the
utility and by their service representatives.
Claims of damage or injury arising from the unauthorized conversion of any A.O. Smith water heater not design certified for
conversion will be the complete and total responsibility of the person or entity making the conversion.
If you have any questions regarding the above policy, please contact the A.O. Smith Parts Department at 1-800-433-2545 or
our Technical Information Center at 1-800-527-1953.
A.O. SMITH WATER PRODUCTS CO., INC.
5621 W. 115TH STREET • ALSIP, ILLINOIS 60803
FAX: 1-800-433-2515 • www.hotwater.com
Printed in the U.S.A. 2574 04/00 No. 137 Rev. 2
PHONE: 1-800-433-2545
Page 2
COMMERCIAL TANK TYPE WATER HEATER PARTS LIST
SEE NEXT PAGE FOR PARTS LIST
PSD-3-597
MODEL BTP-540A AND 700A
SERIES 920
5
19
ITEM NO. 44
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5621 W. 115TH STREET' ALSIP, ILLINOIS 60803
17
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JANUARY 1994PQINT~n IN II S A
Page 3
WATER HEATER PARTS LIST (SEE FRONT PAGE FOR IllUSTRATION)
Item
# Anode, Plug 43817-4(4) 43817-4(4)
#Baffle,Flue 191996-1(16) 191996(16)
#Bolt,Base 41431(4) 41431(4)
Box, Junction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93558 93558
# Bracket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191534(6) 191534(6)
6
7
8
.BurnerAssembly,Power 191993-1 191993
Chamber, Combustion , ... 191020 191020
Channel. . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . 95312-3 95312-3
# CI C d tamp, on UI , 94694(2) 94694(2)
Cleanout Assembly
10
11
12
13
14
15
16
17
17A
18
19
20
21
22
23
# Gasket. . . . . . . . . . . . . . . . . . . . .
# Pressure Plate. . . . . . . . . . . . . . . .
# Screw, Self Tapping # Collar, Pipe. . . . . . . . . . . . . . .
# Collar, Pipe. . . . . . . . . . . . . . .
Conduit, Assembly - Short. . . . . . . . . . . .
Conduit, Assembly - Long.
Control, Barometric Draft (Control Only) ..
Control. Barometric (With Tee Included) . .
# Cover, Front. . . . . . . . . . .
Cover, Inner. . . . . . . . . . . . . . . . . . . .
Cover, Jacket. . . . . . . . . . . . . . . . . .
Cover,JunctionBox , Gasket, Skirt Ring. . . . . . . . . . . . . . .
HorizontaIVentKit (InQludes the following items:)
Description BTP-540 BTP-700
99038(2)
99037(2)
69852-1(12)
20172-6(2)
95030-2(2)
78916-4
78916-5
69803-9
170777-2
38445(2)
190885-2
97062
2233
76443
192049-1
99038(2)
99037(2)
69852:1(12)
20172-6(2)
95030-2(2)
78916-4
78916-5
69803-9
170777-2
38445(2)
190885-2
97062
2233
76443
192049
24
25
26
27
Adapter, Hood. . . . , . . . . . . . .
Hood,Vent-SideWall Reducer - Flue. . . . . , . . . . . . .
Direct Vent Kit. . . . . . . .
192079-1
191236
191981
192050-1
(Includes item 23 and the following items:)
28
29
30
31
32
33
34
35
36
37
Adapter, Inlet. .
Hood,Vent-SideWall Insulation - Fiberglass Skirt:
Top. . . . . . . . . . . . . .
Bottom. . . . . . . . . . . .. . . . . . . .
Insulation, Skirt. . . . . .. . . . . . . . . . . .
Insulation, Top Cover. . . . . . . ,. . . . . . .
Jacket Base. . . . . . . . . . ... . . . . . . .
JacketHalf-Lower Jacket,Half-Upper : Label, Lighting and Operating. . . . . . . .
* Labels
A$~E California. . . . . . . . . . . . . . . . . . . . . .
# Cleanout . . . . . . . . . . . . . . . . . . . . . .
Combination Outlet. . . . . . . . . . . . . . . . . . . . .
192072
191236
181268-14
181268-18
191017
191018
76242
76697-5
78749-6
191808
68065
42985
97444(2)
191159
94519
180980
191068
191916
191983
94518
191973
190600
77995
42346-3
39884
26273-6
99465-3
38
39
40
41
42
43
44
Permafoam . . . . . . . . . . . . . . . . . . . . .
Relief Valve. . . . . . . . . . . . . . . . . . . . .
U.L . . . . . . .. . '.' . . . . .. '.-
Venting. . . . . . . . . . . .'. . . . . . . ..
Water Inlet. . . . . . . . . . . . . . . . . . . .
Wiring Diagram. . . . . . . . . . . . . . . . . .
800 Help Line. . . . . . . . . . . . . . . . .. .
Plate, Pressure Data. . . . . . . .. . . . . . . .
Plug, Cap. . . . . . . . . . . . . . . . . . . .
Retainer. . . . . . . . . . . . . . . . . . .
Thermostatw/ECO # Thread-Cutting Screw. . . . . . . . . . . . . .
Valve, Drain Valve,Relief * Wire
45
16 AWG Stranded, 109°C, AWM & TEW
86578
86580
78394-15
46
Black. . . . . . . . .
White. . . . . . . . . . . . . . . . . . . . .
* Wire Assembly: . . . . . . . . . . . . . . . . .
. Not illustrated.
# Quantities if more than one, shown in parenthesis next to part number
Part numbers underlined are recommended stock items for emergency replacement
ReQuest Dart" from Product Service Division aivina all information such as model and series number.
170336
191533(6)
192079
191235
191981-1
192050
192072
191235
181268-14
181268-18
191017
191018
76242
76697-5
78749-6
191808
68065
42985
97444(2)
191159
94519
180980
191068
191916
191983
94518
191973
190600
77995
42346-3
39884
170336
191533(6)
26273-6
99465-3
86578
86580
78394-16
Page 4
3
Page 5
POWER BURNER PARTS LIST (SEE PAGE 3 FOR IllUSTRATION)
Item
1
Adapter, Inlet (Direct Vent Only) , Back Assembly, Control Box. . . . . . . . . . . . . . . .
Description
2
Bracket, Gas Valve Bracket, Sight. . . . . . . . . . . . . . . . . . . . . . . . . . .
3
4
Capacitor , "
5
# Clamp, Hose (2) Collar, Refractory ., Conduit Assembly Conduit Assembly Connector - Tube. . . . . . . . . . . . . . . . . . . . . . . .
6
7
8
9
9A
10
11
Cover - Control Box. . . . . . . . . . . . . . . . . . . . . .
# End Cap, Terminal Gasket, Blower Inlet. . . . . . . . . . . . . . . . . . . . . .
12
13
14
15
Gasket, Blower Mounting. . . . . . . . . . . . . . . . . . .
Gasket, Burner Mounting. . . . . . . . . . . . . . . . . . .
Gasket, Burner Sealing Gasket, Flange. . . . . . . . . . . . . . . . . . . . . . . . . .
16
17
HousingAssembly,Burner Igniter, Hot Surface Label, Rhino Power. . . . . . . . . . . . . . . . . . . . . . .
18
19
# Module, Control. . . . . . . . . . . . . . . . . . . . . . . . .
20
21
Motor/BlowerAssembly "O"Ring Orifice. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22
23
24
Panel Assembly, Control Plug, Pipe. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
25
26
27
28
Screen, Bluwer Inlet (not used with Item 1) . . . . . .
Standard hardware items may be purchased locally
Switch,Pressure Switch,Pressure Switch, Reset. . . . . . . . . . . . . . . . . . . . . . . . . . .
29
30
#Terminal Tie, Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31
32
33
34
35
Transformer. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tube, Burner and Plates Assembly. . . . . . . . . . .
Tubing-Pressure Tubing-Pressure Tubing-Pressure Tubing-Pressure Valve, Control (Robertshaw) Window,Observation . Wire Assembly. . . . . . . . . . . . . . . . . . . . . . . . . .
35A
36
36A
37
38
39
40
Wire Assembly, Igniter ,...
192072
192005
191522
190911
191689
191794-2
191008
190928-3
190928
192152(2)
192027
98206(2)
192030
192025-1
192026
190873
190864-1
192001-1
190907
191453
191675
191995-1
190914
190908-6
192028
191690
192007 -1
192018
192019-1
190894
98205(4)
191189
99238-1
192002-1
192024-14
192024-7
192024-2
192024-11
78450-7
191186
192023
190933-1
BTP-700ABTP-540A
192072
192005
191522
190911
191689-1
191794-2
191008
190928-3
190928
192152(2)
192027
98206(2)
192030
192025
192026
190873
190864-1
192001
190907
191453
191675
191995
190914
190908-3
192028
191690
192007
192018
192019
190894
98205(4)
191189
99238-1
192002
192024-14
192024-7
192024-2
192024-11
78450-7
191186
192023
190933-1
# Quantities if more than one, shown in parenthesis next to part number.
Part numbers underlined are recommended stock items for emergency replacement.
Request parts from Water Products Company giving all information such as model
and series number.
. Not illustrated.
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