Bradford White MI30T Service Manual page 29

The Bradford White
DEFENDER
Safety System
GAS CONTROL REPLACEMENT
Step 8. Install new Gas Control into water heater (contintued).
b) Reattach main burner feedline, pilot tube, piezo igniter wire, inner door wire (red) and thermopile wire
(white) to Gas Control. Attach inner door wire (red) to the positive (+) terminal and the thermopile wire
(white) to the negative (-) terminal.
Positive (+) Terminal
(red wire)
c) Gather piezo igniter wire, thermopile wire (white), inner door wire (red), and pilot tube and secure along
side of feedline using new wire tie provided.
d) Reconnect gas supply piping to inlet of Gas Control.
Step 9. Reinstallation of inner door assembly.
a) Prior to reinstallation of inner door, fully inspect inner door gasket for the following:
> Tears
> Missing Material
> Cracks
> Dirt or debris
If the gasket is not effected by any of the above, gasket replacement will not be required. If replacement is
required, replace using new gasket kit following the instructions provided with kit.
b) Clean any gasket residue or other debris from combustion chamber surface before installing
the inner door/gasket assembly.
c) Position thermopile wire, pilot tube and Piezo wire against left side inner door flange gasket. DO NOT ROUTE
THROUGH RADIUSED CHANNEL WITH FEEDLINE. Be sure that thermopile and pilot tube are not
in position to interfere with outer jacket burner access door when reinstalled.
Testing, Disassembly & Replacement (Honeywell)
®
> Gasket Adhesion to inner door
> Other imperfections that will inhibit proper seal
> Material left on combustion chamber
A seal breach may result in a fire or
explosion causing property damage,
Position thermopile, pilot
tube and Piezo wire.
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SERVICE PROCEDURE RG-VI
Gas Control
Negative (-) Terminal
(white wire)
CAUTION
Use back up wrench on wrench boss
of Gas Control, never use back up
wrench on body of Gas Control.
WARNING
personal injury or death.
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