Midco J120-3 Parts List

R eplacement Parts

List

704

8472 34

Printed in USA

Quality Designed for Proven Performance

Installation and Service Manual 8448-60 (IN20)
date coded 272 through 979

First construction early 1972.
Supersedes "H" Series Incinomite

MODEL J40-DS:

• Discontinued December 1, 1977 (date code 4877).

MODEL J80-DS:

• Featured 05-13 Fenwal Control with non-replaceable pigtail fuse.

• Discontinued November 2, 1983 (date code 4483).

• Superseded by Model J81-DS which features an 05-14 Fenwal Control with
Manual Reset Circuit Breaker, and a modified Terminal Strip.

MODEL J80-3 & J120-3:

• Superseded by Models J81-3 and J121-3 in early 1984 to reflect a change in the
Terminal Board wiring and Terminal designation.

IMPORTANT: Availability of parts as well
as specifications are subject to change
without notice.

Please consult factory for item availability.
AVOID ERROR IN PARTS SELECTION. When ordering,

use complete MIDCO part number and description. Furnish
burner model number, bill of material number and date code
or serial number from specification plate.

Midco International Inc.

4140 West Victoria Street
Chicago, Illinois 60646
tel [phone]
fax [phone]
web www.midcointernational.com
[e-mail]

Incinomites Models

J40-DS, J80-DS, J80-3, J120-3

J40-DS, J80-DS, J80-3, J120-3 Parts List

J40/80 Blower Housing Replacement Kit (order
Blower Wheel, Motor, Shutters, Inlet Screen,
Manifold, etcetera, separately)
J120 Blower Housing Replacement Kit (order
Blower Wheel, Motor, Shutters, Inlet Screen,
Manifold, et cetera, separately)
Shutter Replacement Kit
Manifold
Input Adjuster Screw Assembly
Ignitor Gas Inlet Block, Tube and Ignitor Tip
Assembly—J40/80
Blast Tube -- J120
Blast Tube -- J40/80
Flange Gasket
Mounting Flange Replacement Kit (order Gasket
separately)
Blower Wheel -- J40/80

J40/80 NATURAL -- #55 Drill (.052)
J120 NATURAL -- #50 Drill (.70)
J40/80 PROPANE -- #58 Drill (.042)
J120 PROPANE -- #52 Drill (.063)
Ground Barrier -- J80/J120-3
Blower Wheel -- J120
Inlet Ring and Screen Replacement Kit
Main Gas Port and TubeKit -- J40 NATURAL
Main Gas Port and Tube Kit -- J80 NATURAL
Main Gas Tube Kit -- J120 NATURAL
Electrode (spark or flame rod) -- 2 required -­J80/J120-3

Ignitor Tubing Kit -- J40/80-DS
Electrode Wires and Boots -- J40/80-DS
Ignitor Assembly -- J40/80-DS
Ignitor Assembly -- J80-3
Electrode -- 2 required -- J40/80-DS
Motor -- J120 (GE 5KH33DG1021Y,
5KH33DN199Y; Marathon P48S34D217A)
(Instruction Bulletin 8470-32 is included)
Input Stop Nipple
Motor -- J40/80 (Singer AK-5119AX; Franklin
8213910302, 8253910282, 8353910282;
Universal JA2PO22N#, JA2PO85NV#)
Electrode Wires, Boots and Strain Reliefs—
J80/J120-3
Ignitor Gas Inlet Block, Tube and Ignitor Tip
Assembly—J121A-3
Ignitor Assembly—J121A-3
Input Adjuster Cap
1/8 NPT Ignitor Regulator (Maxitrol RV10)
1/8 NPT Ignitor Solenoid Valve -- 120/1/60
Gas Valve 3/4" -- J80 (GC K40AC252,
K3A452B; M-H V4249A; PENN Baso H91LA-7;
W-R 2509A266)
Gas Valve 1" -- J120 (GC K40AC362, K3A462B;
M-H V4036A; PENN Baso H91MA-1; W-R
2509A258)
On-Off Toggle Switch
Thermal Switch (ESSEX 403-46; T-O-D 60T-13­203125, 60T-13-203420)
Blower Air Switch (Chgo. Saf. Prod. #SMP;
Tridelta #FP4039)
Input Adjuster Sealing Gasket

6400-80

6400-85

6401-90
6403-00
6404-90
6405-00

6406-00
6406-05
6407-30
6407-90

6410-00

6412-95
6412-96
6412-97
6412-98
6413-09
6415-00
6416-90
6417-50
6417-52
6417-54
6418-00

6421-59
6424-80
6424-90
6425-90
6430-00
6443-50

6447-00
6464-00

6466-90

6481-70

6481-90
6622-40
8400-00
8402-00
8418-01

8418-03

8423-05
8425-18

8425-19

8450-59

Part # Part #Description Description

IGNITOR CONTROL PIPING

2

Assembly includes Brass Orifice tee (Orifice), Pressure

Tap, Regulator and Compression Fitting

Midco International Inc. 4140 West Victoria Street * Chicago, Illinois 60646 704

tel [phone] * fax [phone] * web www.midcointernational.com email [e-mail] 8472 34

Printed in USA