CALL OUT
HM
HEAT EXCHANGER - METAL (ASME-CERTIFIED, FOR COMMERCIAL USE)
1-HM
Heat Exchanger Assy.Copper ASME
Units manufactured from 12/2019 (Bronze)
Units manufactured prior to 12/2019 (Cast Iron)
Heat Exchanger Assy.Cupronickel ASME
Units manufactured from 12/2019 (Bronze)
Units manufactured prior to 12/2019 (Cast Iron)
2-HM
Inlet/Outlet Header ASME Complete
Units manufactured from 7/2020 (Bronze)
Units manufactured from 12/2019 (Bronze)
Units manufactured prior to 12/2019 (Cast Iron)
Inlet/Outlet Header ASME (Header Only)
Units manufactured from 7/2020 (Bronze)
Units manufactured from 12/2019 (Bronze)
Units manufactured prior to 12/2019 (Cast Iron)
15-HM
Inlet & Outlet Flange - prior to 12/2019
16-HM
Flange Gasket 1 1/2" Connections - prior to 12/2019
Flange Gasket 2" Connections - prior to 12/2019
3-HM
Return Header ASME
Units manufactured from 7/2020 (Bronze)
Units manufactured from 12/2019 (Bronze)
Units manufactured prior to 12/2019 (Cast Iron)
4-HM
Tube Bundle Copper ASME *
Units manufactured from 12/2019
Units manufactured prior to 12/2019
Tube Bundle Cupronickel ASME *
Units manufactured from 12/2019
Units manufactured prior to 12/2019
5-HM
Baffle
6-HM
Stud Bolt Kit
Units manufactured from 12/2019
Units manufactured prior to 12/2019
7-HM
Header Gasket (9)
8-HM
Unitherm Governor
9-HM
U.G. Retainer Spring
18-HM
U.G. Plug
10-HM
Bypass Valve
11-HM
Bypass Spring
Units with Plastic Bypass Valve (Units manufactured from 3/5/17 to 12/19)
Units with Bronze Bypass Valve (Units manufactured prior to 3/5/17)
12-HM
Drain Valve
13-HM
Sensor Well
14-HM
Well Retaining Clip
17-HM
Rear Drain Plug & Cover
19-HM
Adapter CPVC 2"
26-HM
Adapter - ProTek Shield (Includes 27-HM) from end of Q3 2020
27-HM
Nut - ProTek Shield Adapter - 2-Pc from end of Q3 2020
28-HM
U.G./Bypass Assembly (Units manufactured from 12/2019)
29-HM
ProTek Shield Assembly from end of Q3 2020
30-HM
ProTek Shield Adapter Assembly - from end of Q3 2020
J
CONTROL BOX
1-J
Transformer 120/240/24V
2-J
Rocker Switch
M
MISCELLANEOUS COMPONENTS
1-M
Pressure Switch 1.75 PSI
Pressure Switch 1.75 PSI Complete Kit (Units manufactured from 12/2019 to 6/2020)
Pressure Switch 11 PSI Special-See Water Pressure Switch Adj.
2-M
Thermostat Knob
3-M
Thermostat Shaft MV
4-M
Knobstop
5-M
Thermal Fuse
6-M
PRV
7-M
Deliming Kit
8-M
Wire/Harness Millivolt
Wire/Harness IID
9-M
Control Bezel MV (Includes Dial Decal)
10-M
Dial Decal MV
11-M
Control Bezel (Includes Switch Decal)
Units manufactured from 5/2011
Units manufactured prior to 5/2011
12-M
Switch/Decal-Membrane
Units manufactured from 5/2011
Units manufactured prior to 5/2011
13-M
Control Bezel Cover
14-M
Gasket Insulation (Swaybrace & Jacket Top)
15-M
Touch-up Paint
Green
Dark Gray
Cool Dark Gray
Warm Dark Gray
16-M
Tie Down Bracket (Optional)
17-M
Texas Code Option (ASME Only) - Units manufactured prior to 12/2019
Flanged Connection (Not Shown)
NPT Connection (Not Shown)
21-M
T & P Gauge
22-M
2" CPVC Connector (Outlet Plumbing)
NPT Connection
Flanged Connection
23-M
2" CPVC Connector & Nut (2)
24-M
O Ring (2)
18-M
PC Board Shield (Optional)
25-M
Gas Line Finish Flange
*WARNING: The Hydraulic conditions or water chemistry that caused the tube bundle to fail have very likely also damaged the bypass valve and Unitherm Governor. We
recommend you replace the Unitherm Governor and inspect the bypass assembly. Failure to do so could cause premature failure of this replacement part.
50
APPROVED
DESCRIPTION
UNCONTROLLED DOCUMENT IF PRINTED
206A
266/266A
336A
017983F
017984F
017985F
010051F
016193F
010053F
017987F
017988F
017989F
010360F
010361F
010362F
018740F
018740F
018741F
017961F
017961F
017992F
006730F
006730F
006730F
018739F
018739F
018739F
017966F
017966F
017966F
012319F
012319F
012319F
003766F
003766F
003766F
062236B
062236B
062236B
800080B
800080B
800080B
018738F
018738F
018738F
017973F
017973F
017973F
006731F
006731F
006731F
017974F
017975F
017976F
010055F
006733F
010057F
017978F
017979F
017980F
010368F
010369F
010370F
010038F
005261F
010040F
017982F
017982F
017982F
007870F
007870F
007870F
800014B
800014B
800014B
062234B
062234B
062234B
013792F
013792F
013792F
013738F
013738F
013738F
016194F
016194F
016194F
016196F
016196F
016196F
013794F
013794F
013794F
013793F
013793F
013793F
003765F
003765F
003765F
300203
300203
300203
005264F
005264F
005264F
005393F
005393F
005393F
018006F
018006F
018006F
018007F
018007F
018007F
017958F
017958F
017962F
018766F
018766F
018766F
018006F
018006F
018006F
006736F
006736F
006736F
009493F
009493F
009493F
006737F
006737F
006737F
018297F
018297F
018297F
009133F
009133F
009133F
009499F
009499F
009499F
800307
800307
800307
006886F
006886F
006886F
005899F
005899F
005899F
017957F
017957F
017957F
052871F
052871F
052871F
010386F
010386F
010386F
009490F
009490F
009490F
009489F
009489F
009489F
009858F
009858F
009858F
013491F
013491F
013491F
009491F
009491F
009491F
013492F
013492F
013492F
009492F
009492F
009492F
009487F
009487F
009487F
010350F
010350F
010350F
750125
750125
750125
750126
750126
750126
750256
750256
750256
750258
750258
750258
011636
011636
011636
015889F
015889F
015889F
015890F
015890F
015890F
014647F
014647F
014647F
013795F
013795F
013795F
015883F
015883F
015883F
006723F
006723F
006723F
006724F
006724F
006724F
015557F
015557F
015557F
016160F
016160F
016160F
399/406A
017986F
010054F
017990F
010363F
018741F
017992F
006730F
018739F
017966F
012319F
003766F
062236B
800080B
018738F
017973F
006731F
017977F
010058F
017981F
010371F
010041F
017982F
007870F
800014B
062234B
013792F
013738F
016194F
016196F
013794F
013793F
003765F
300203
005264F
005393F
018006F
018007F
017962F
018766F
018006F
006736F
009493F
006737F
018297F
009133F
009499F
800307
006886F
005899F
017957F
052871F
010386F
009490F
009489F
009858F
013491F
009491F
013492F
009492F
009487F
010350F
750125
750126
750256
750258
011636
015889F
015890F
014647F
013795F
015883F
006723F
006724F
015557F
016160F