Munchkin 399M - Manual (Page 39)

39
MAINTENANCE
CONTROL WIRING LAYOUT
Fig. 8-1
*
There is a spare 6.3 amp “slow blow” fuse included on the control cover. HTP p/n 7250-378 or
you may purchase it from Radio Shack p/n: 270-1068
Caution: Do not replace with any amperage other than 6.3A
d. Re-connect gas valve, air-gas mixer and replace bracket. (IMPORTANT: CHECK FOR GAS
LEAKS)
e. Re-set thermostats (IMPORTANT: MAKE SURE EXHAUST VENT IS NO LONGER BLOCKED!)
f. Turn the Munchkin back on** and observe condensate flow.
g. Re-connect the condensate hose to the outside connection.
**NOTE: When firing up the boiler for the first few times you may experience some flut-
tering of the gas burner that may result in a flame lockout. This is normal and will
require you to re-cycle the unit until this clears up. This is caused by water still present
in the combustion chamber.
E. MUNCHKIN CONTROLLER
DANGER
IT IS EXTREMELY IMPORTANT THAT YOU CHECK FOR LEAKS WHEN
RECONNECTING THE GAS VALVE AND MAKING SURE THE EXHAUST VAN IS NO
LONGER BLOCKED. FAILURE TO DO SO MAY RESULT IN SEVERE PERSONAL INJURY
OR DEATH.