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Parts List: A.O. Smith CTG-40, CTG-50 Series 226

  1. Use the chart to find the part you need to order. A diagram of the unit is below the chart to assist you in locating your part.
  2. Click on the underlined link to go directly to the part's page for pricing and ordering.
  3. For parts that are not underlined and do not have a link, please Contact Us for price and availability.
  4. The manufacturer has changed some part numbers to a new part number, and we have referenced the new part number in the chart (if applicable). Please note that the manufacturer may change part numbers and availability at any time.
  5. You can download and print the original PDF of the A.O. Smith parts list at the bottom of the page.
Item Description
CTG-40
Series 226
Natural Gas
CTG-50
Series 226
Natural Gas
1 Anode 183523-39 (new # 9003892005) 183523-39 (new # 9003892005)
1 Anode, Magnesium for SMR S19 & S44 Code 183463-39 (new # 9001829005) 183463-39 (new # 9001829005)
2 Flue Baffle 181589 (new # 9006927005) 181589 (new # 9006927005)
3 Hanger, Flue Baffle 181360 (new # 9004362115) 181360 (new # 9004362115)
4 Restrictor, Flue Baffle 34894 (new # 9004776115) 34894 (new # 9004776115)
5 Main Burner Assembly 183003 (no longer available) 183003-1 (no longer available)
6 Air Shutter 181673 (new # 9005805215) 181673 (new # 9005805215)
7 Main Burner 181654 (no longer available) 181654 (no longer available)
8 Pilot Burner Assembly 183004 (no longer available) 183004 (no longer available)
9 Nut, Air Shutter 181665-1 181665-1
10 Orifice, Main Burner 181508-32 (new # 9005950005) 181508-32 (new # 9005950005)
11 Thermocouple 23673 (new # 9000876015) 23673 (new # 9000876015)
12 Tube, Main Burner 181663 (no longer available) 181663-1
13 Pilot Tube 23330 (new # 9004473115) 23330 (new # 9004473115)
14 Nut, Compression 32365 (new # 9001895015) 32365 (new # 9001895015)
16 Door Hinge 181453 181453
17 Inner Door Assembly 181667 (new # 9004369115) 181667 (new # 9004369115)
18 Outer Door 181650-1 (new # 181650-001) 181650-1 (new # 181650-001)
19 Draft Hood 181082-700 181082-700
20 Outlet Heat Trap ----- -----
  Ignitor:    
26 Lighter Rod and Cable 180117 (new # 9004352115) 180117 (new # 9004352115)
27 Piezo Ignitor ----- -----
28 Bracket, Piezo Ignitor ----- -----
29 Pipe Collar 20172-21 (new # 9004610115) 20172-21 (new # 9004610115)
30* Pipe Insulation 181639 181639
31 Thermostat 180193-4 (new # 9004353105) 180193-4 (new # 9004353105)
32 Heat Trap Inlet Tube ----- -----
33 Inlet Tube 21067-37 (new # 9003903005) 21067-37 (new # 9003903005)
34 Drain Valve 26273-7 (new # 9001870015) 26273-7 (new # 9001870015)
35 T & P Relief Valve 43151-2 (new # 9003741005) 43151-2 (new # 9003741005)
36 Thermostat Shield (Optional) 191259-001 191259-001
NOTES:
- The manufacturer may change part numbers and availability at any time.
* Not Illustrated

 

 

Download original AO Smith Parts List
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