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Parts List: A.O. Smith HW-520, HWB-520; Series 100/101

  • Links are included to the parts that are available to be purchased.
  • Parts that are not listed in the chart are either discontinued by AO Smith or are not available for purchase.
  • The item number in the first column corresponds to the location of the part in the line art drawing below the chart.

 

Item Description HW-520
Series 100/101
2 Box, Junction 190616-4 (new # 100110255)
5 Bracket, Shield 190473 (new # 100110664)
6 Burner, Main: Sea Level  
  - Propane 98593-22 (new # 100109983)
7 Burner, Pilot (with Orifice):  
  - Natural Gas 210871 (new # 100110271)
  - Propane Gas 210871-1 (new # 100111925)
11 Clamp, Capillary Tube 94998 (new # 100111094)
14 Coil, Combustion Chamber 99267 (new # 100110263)
16 Control, Intermittent Ignition:  
  - Natural Gas (Series 100) 191182-2 (new # 100109879)
  - Propane (Series 101) 191182-3 (new # 100111920)
17 Control, Limit 93661-4 (new # 100110233)
25 Exchanger, Heat 190889 (new # 100110260)
26 Fitting, Limit Control 97570 (new # 100029838)
28 Hood, Draft (Series 100) 98428-704 (new # 100110360)
  Hood, Draft (Series 101) 98428-704 (new # 100110360)
40 Ring, Support 85405 (new # 100110422)
44 Shield, Base Radiation 96015 (new # 100110645)
45 Shield, Door 191119 (new # 100110369)
46 Shield, Floor 96025 (new # 100110647)
48 Sheild, Pilot 170247 (new # 100110660)
49 Skirt Assembly 97262 (new # 100110430)
51 Switch, Safety Flow (Required, but not supplied with unit) 211480 (new # 100110588)
52 Tape, Asbestos Free (used with Item 40) 95072-1 (new # 100110424)
54 Thermal Balancer 98190 (new # 100110724)
57 Tube, By-Pass 97463 (new # 100110649)
59 Valve, Gas Control:  
  - Natural Gas, Series 100 78450 (new # 100110218)
  - Propane, Series 101 78450-1 (new # 100110219)
60 Valve, Relief 50 PSI 210451-1 (new # 100111922)
NOTES:
- The manufacturer may change part numbers and availability at any time.

 

 

 

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