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Key
Part Number
A
C
D
G
H
I
J
K
L
M
N
O
P
Q
R
S
Not Shown
Not Shown
P77-3 SC30 Manual 9.27.2019
PARTS LIST: MIDCO burner (J121-DS)
33116
31603
31586
33140
31581
31582
33129
101420
101419
31574
101427
33133
31579
101426
33112
33120
33151
33118
31583
31584
Description
Manifold
Flange Gasket
Blower Wheel
Ground Barrier Kit
Main Gas Port and Tube Kit – PROPANE
Main Gas Port and Tube Kit – NATURAL
Transformer 115/1/50-60 Primary, 24V-30VA
Or
Transformer 220/24V 50/60 Hz, 35VA
3/4" NPT Gas Valve -- 24 Volt
Electrode (spark or flame) - 2 required
Electrode Wires, Boots and Strain Reliefs
Ignitor Assembly
Motor, 115/1/50-60 Hz
Or
Motor, 220/1/60 Hz
Ignitor Regulator 1/8 NPT
Thermal Switch
DSI Electronic Control Board
Input Adjuster Sealing Gasket
PROPANE Conversion Kit
NATURAL Conversion Kit
Page 29
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