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Mersey Super - Installation & Service Instructions
Page 20 of 35
Fig. 22
6.5. FLAME SAFETY DEVICE
a. Gain general access -see 6.2.
b. Disengage the electrode lead from the piezo unit.
c. Release the thermocouple from the back of the flame safety device.
d. Release the union nuts above and below the flame safety device.
e. Release the union nut securing the pilot transfer tube to the flame safety device.
f. Remove the 3 screws securing the flame safety device to the chassis base and carefully
withdraw the unit.
g. Re-assemble in reverse order.
Page 12
REPLACEMENT OF PARTS - Page 13
h. Test for gas soundness as follows:-
- Ensure the water service cock is in the OFF position. This will ensure water cannot flow
and open the automatic valve.
- Turn ON the gas, purge and light the pilot, this will pressurise the burner supply pipe.
- Test the gas supply to flame safety device and burner supply pipe above the flame safety
device for gas soundness using leak detection fluid.
i. Re-assemble remaining parts and ensure the water service cock is in the ON position.
file://P:\System\DATA\Dx\DS1\installation\2551\I24-2551\I24-2551.htm
09/12/2009
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