Inc. Water Heater User's Manual
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ITEM DESCRIPTION 
1.  Cold Water Inlet Dip Tube 
(N/A 33E & 40E)
2. Plastic Cap 
3.  Magnesium Anode Rod 
(aluminum avaliable)
4.  Name Plate/Rating Label 
6.  Immersion Well & Aquastat 
8. Drain Valve 
9.  Mounting Bracket Gasket 
10.  Burner Mounting Bracket 
(part of jacket assembly on Models
20e, 32E through 51 Series; sold 
separately on 71E and 120E)
11. Bottom Pan 
12.  Combustion Chamber Sleeve 
13. Combustion Chamber 
14. Inspection Block 
15. Inspection Door 
16.  Inspection Door Gasket 
17. Heater Jacket 
18. Tank 
19. 
Hot Out Nipple 
51 Series: 1” 
AlI others: 3/4” 
50ES: N/A
20. Top Pan 
21. 
Burner 
22. Primary Relay 
23. 
Cad Cell
I
TEM DESCRIPTION 
1. Motor
2. Blower Wheel 
3
. Burner Housing 
4.  Motor Cord Cover
5. J-Box 
6. Transformer 
7. Housing Cover 
8.  Slot Cover Plate
9. Inner Air Band 
10. Outer Air Band
11.  Coupling (not shown)
BURNER COMPONENTS LIST
BURNER COMPONENTS
ITEM DESCRIPTION 
12. Oil Line Assembly
13. Fuel Unit 
14. Elbow
15. Gun Assembly
16. Air Tube 
17. Flange 
18. Air Cone
19. Gasket
2
0. Nozzle 
(not shown)
21. Relay 
2
2. Cad Cell 
OIL FIRED WATER HEATER
BOCK TANK ASSEMBLY
PARTS LIST
When ordering repair parts, always give 
the part name, model number, size and 
serial number.
Handhole cover plate and gasket
(for 50ES only) not shown.










