A. O. Smith FSCH-30 Parts List

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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

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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: [phone] • www.hotwater.com

Printed in the U.S.A. 2574 04/00 No. 137 Rev. 2

PHONE: [phone]

PSD-1-279

RESIDENTIAL WATER HEATER PARTS liST

MODELS FSGH/PGXH-30, 40 & 50

SERIES: 240/241

FLAME

;PREADER

PART NO.

181101

29

SMA R99 MODELS ONLY

.,..:;

PRINTED IN U.S.A.

-~... -~ ~..

PART NO. 181--1

A.O. SMITH WATER PRODUCTS CO., INC.

PHONE' 1.800-433-2545 . FAX: [phone] . WWW.HOTWATER.COM

5621 W. 115TH STREET. ALSIP, ILLINOIS 60803

(~

March 1997

Item

1

ANODE

FSGH & 'T' Mooels PGXH & 'T' Mooels BURNER ASSEMBLY, MAIN - Natural .

2

BURNER ASSEMBLY, MAIN - Propane

3

Burner Head - Natural Burner Head - Propane Orifice, Main Burner - Natural... Orifice, Main Burner - Propane Burner Ass~bly, Pilot - Natural Burner Ass~bly, Pilot - Propane... ...

4

5

6
7

Thermocouple Tube, Main Burner- Natural Tube, Main Burner - Propane ... Tube, Pilot ... ... ... Dirt Leg Assembly- Propane DOOR

8
9

Description

FSGH/PGXH-30

240/241

43817-25

180618-44

182725

182725-1

182730

182730
181508-31
181791-50

1B2Z29.

182729-1

~
182727
182728

23925-20

181206

FSGH/PGXH-40

240/241

43817-29
180618-42
182725-15
182725-16

182730

182730
181508-31
181791-50

1S21.29.

182729-1

~

182727

182728

23925-20

181206

FSGH/PGXH-50

240/241

43817-35

180618-44

182725-4
182725-5

182730

182730
181508-31
181791-50

162Z29.

182729-1

2a§15.

182727

182728

23925-20

181206

10

Outer Inner Draft HocxJ Flue Baffle ... ... ... Flue Restrictor . Hanger, Baffle HEAT TRAP ('T' Models)

11
12
13
14
15

16

.-

18

Inlet Outlet LABEL

. Flammable Vapor Warning . Lighting & Operating . Scald Warning . T~perature . Instruction Manual Nut, Compression.. Pipe Collar... ... Spacer, Inlet Tube ... THERMOSTAT

19
20
21
22
23
24
25
26

Natural.. ... ... Propane... ...

27

Tube, Inlet.. ... VALVE

28
29

Drain Main Gas Shutoff

8MR 844

Heat Trap, Inlet Tube

16

Tube. Inlet

28

180522
180596
181082
181589

34894

181360

181068-35

181235

181139
182798
181138
182734
182732

32365

20172-14

42589-1

1B2l.9.1
1B2Z92

160907-35

26273-5

181737

181295-35

160501-35

180522
180596
181082
181589

34894

181360

181068-35

181235

181139
182798
181138
182734
182732

32365

20172-14

42589-1

1621.91

1.62.Z92

160907-35

26273-5

181737

181295-35
160501-35

180522
180596
181082
181589

34894

181360

181068-35

181235
181139

182798
181138
182734
182732

32365

20172-14

42589-1

1.62Z9.1

1B2.Z92

160907-35

42037-1

181737

181295-35
160501-35

SMRR99

BURNER ASSEMBLY, MAIN - Natural .

2
3

Burner Head Assembly Orifice, Main Burner - Natural Manual, Earthquake Instructioo Nox Flame Spreader Assembly - Natural

4

..

- - -..

182726-0
182730-1

181508-31

181809
181101
160629

182726-1
182730-1

181508-31

181809
181101
160629

182786-3
182730-1

181508-31

181809
181101

160629
SMAS06
Insert Sheet 182552 182552 182552
Manual. Earthquake Instruction 181809 181809 181809

32 Drain Valve - 50 allan on ... 26273-5 26273-5 26273-5

SMA S19

1 ANODE

FSGH & 'T' Mooels ...".."""""""""""""""'.".." 43817-25 43817-29 43817-35
PGXH & 'T' Mooels 180618-44 180618-42 180618-44

SMA K32
BURNER ASSEMBLY, MAIN - Natural

2
4

Note: Underlinoo parts are r~ommendoo stock items for emergency replacement. Consider gas used in your area only.

Orifice. Main Burner - Natural

SMA S45

1 Anode, Outlet ..."... 181125-42 181125-42

Nipple """ 38469-4 38469-4
Pi e Plu , 92650 92650

* Not illustratoo.

"T" denotes heat trap models.

182725-2

181508-32

182725-17
181508-32

182725-6

181508-32

181125-42

38469-4

92650