Instructions / Assembly

49
CALL OUT DESCRIPTION 206A 266/266A 399/406A
HM HEAT EXCHANGER - METAL
1-HM Heat Exchanger Assy.Copper ASME
Units manufactured from 12/2019 (Bronze) 017983F 017984F 017986F
Units manufactured prior to 12/2019 (Cast Iron) 010051F 016193F 010054F
Heat Exchanger Assy.Cupronickel ASME
Units manufactured from 12/2019 (Bronze) 017987F 017988F 017990F
Units manufactured prior to 12/2019 (Cast Iron) 010360F 010361F 010363F
2-HM Inlet/Outlet Header ASME Complete
Units manufactured from 7/2020 (Bronze) 018740F 018740F 018741F
Units manufactured from 12/2019 (Bronze) 017961F 017961F 017992F
Units manufactured prior to 12/2019 (Cast Iron) 006730F 006730F 006730F
Inlet/Outlet Header ASME (Header Only)
Units manufactured from 7/2020 (Bronze) 018739F 018739F 018739F
Units manufactured from 12/2019 (Bronze) 017966F 017966F 017966F
Units manufactured prior to 12/2019 (Cast Iron) 012319F 012319F 012319F
15-HM Inlet & Outlet Flange - prior to 12/2019 003766F 003766F 003766F
16-HM Flange Gasket 1 1/2" Connections - prior to 12/2019 062236B 062236B 062236B
Flange Gasket 2" Connections - prior to 12/2019 800080B 800080B 800080B
3-HM Return Header ASME
Units manufactured from 7/2020 (Bronze) 018738F 018738F 018738F
Units manufactured from 12/2019 (Bronze) 017973F 017973F 017973F
Units manufactured prior to 12/2019 (Cast Iron) 006731F 006731F 006731F
4-HM Tube Bundle Copper ASME *
Units manufactured from 12/2019 017974F 017975F 017977F
Units manufactured prior to 12/2019 010055F 006733F 010058F
Tube Bundle Cupronickel ASME *
Units manufactured from 12/2019 017978F 017979F 017981F
Units manufactured prior to 12/2019 010368F 010369F 010371F
5-HM Baffle 010038F 005261F 010041F
6-HM Stud Bolt Kit
Units manufactured from 12/2019 017982F 017982F 017982F
Units manufactured prior to 12/2019 007870F 007870F 007870F
7-HM Header Gasket (9) 800014B 800014B 800014B
8-HM Unitherm Governor 062234B 062234B 062234B
9-HM U.G. Retainer Spring 013792F 013792F 013792F
18-HM U.G. Plug 013738F 013738F 013738F
10-HM Bypass Valve 016194F 016194F 016194F
11-HM Bypass Spring
Units with Plastic Bypass Valve (Units manufactured from 3/5/17 to 12/19) 016196F 016196F 016196F
Units with Bronze Bypass Valve (Units manufactured prior to 3/5/17) 013794F 013794F 013794F
12-HM Drain Valve 013793F 013793F 013793F
13-HM Sensor Well 003765F 003765F 003765F
14-HM Well Retaining Clip 300203 300203 300203
17-HM Rear Drain Plug & Cover 005264F 005264F 005264F
19-HM Adapter CPVC 2" 005393F 005393F 005393F
26-HM Adapter - ProTek Shield (Includes 27-HM) from end of Q3 2020 018006F 018006F 018006F
27-HM Nut - ProTek Shield Adapter - 2-Pc from end of Q3 2020 018007F 018007F 018007F
28-HM U.G./Bypass Assembly (Units manufactured from 12/2019) 017958F 017958F 017962F
29-HM ProTek Shield Assembly from end of Q3 2020 018739F 018739F 018739F
30-HM ProTek Shield Adapter Assembly - from end of Q3 2020 018006F 018006F 018006F
J CONTROL BOX
1-J Transformer 120/240/24V 006736F 006736F 006736F
2-J Rocker Switch 009493F 009493F 009493F
M MISCELLANEOUS COMPONENTS
1-M Pressure Switch 1.75 PSI 006737F 006737F 006737F
Pressure Switch 1.75 PSI Complete Kit (Units manufactured from 12/2019 to 6/2020) 018297F 018297F 018297F
Pressure Switch 11 PSI Special-See Water Pressure Switch Adj. 009133F 009133F 009133F
2-M Thermostat Knob 009499F 009499F 009499F
3-M Thermostat Shaft MV 800307 800307 800307
4-M Knobstop 006886F 006886F 006886F
5-M Thermal Fuse 005899F 005899F 005899F
6-M PRV
PRV - 75 PSI ASME (Bronze) Units manufactured from 12/2019 017957F 017957F 017957F
PRV - 125 PSI (Optional) Units manufactured prior to 12/2019 008091F 007224F 007224F
7-M Deliming Kit 052871F 052871F 052871F
8-M Wire/Harness Millivolt 010386F 010386F 010386F
Wire/Harness IID 009490F 009490F 009490F
9-M Control Bezel MV (Includes Dial Decal) 009489F 009489F 009489F
10-M Dial Decal MV 009858F 009858F 009858F
11-M Control Bezel (Includes Switch Decal)
Units manufactured from 5/2011 013491F 013491F 013491F
Units manufactured prior to 5/2011 009491F 009491F 009491F
12-M Switch/Decal-Membrane
Units manufactured from 5/2011 013492F 013492F 013492F
Units manufactured prior to 5/2011 009492F 009492F 009492F
13-M Control Bezel Cover 009487F 009487F 009487F
14-M Gasket Insulation (Swaybrace & Jacket Top) 010350F 010350F 010350F
15-M Touch-up Paint
Green 750125 750125 750125
Dark Gray 750126 750126 750126
Cool Dark Gray 750256 750256 750256
Warm Dark Gray 750258 750258 750258
16-M Tie Down Bracket (Optional) 011636 011636 011636
17-M Texas Code Option (ASME Only) - Units manufactured prior to 12/2019
Flanged Connection (Not Shown) 015889F 015889F 015889F
NPT Connection (Not Shown) 015890F 015890F 015890F
21-M T & P Gauge 014647F 014647F 014647F
22-M 2" CPVC Connector (Outlet Plumbing)
NPT Connection 013795F 013795F 013795F
Flanged Connection 015883F 015883F 015883F
23-M 2" CPVC Connector & Nut (2) 006723F 006723F 006723F
24-M O Ring (2) 006724F 006724F 006724F
18-M PC Board Shield (Optional) 015557F 015557F 015557F
25-M Gas Line Finish Flange 016160F 016160F 016160F
*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.