TABLE OF CONTENTS
TABLE OF CONTENTS
PART 1 . . . . . . . . . . . . . . . . . . . . . .4 thru 6
GENERAL INFORMATION
A How It Operates . . . . . . . . . . . . . . . . . .4
BMunchkin Ratings and
C | .5 | |
D | Pressure Relief Valve | .6 |
PART 2 . . . . . . . . . . . . . . . . . . . . . .6 thru 8
ELECTRICAL
A Electrical Connection . . . . . . . . . . . . . .6
PART 3 . . . . . . . . . . . . . . . . . . . . .8 thru 10
GAS CONNECTION
A Gas Connection . . . . . . . . . . . . . . . . . . .9
B Gas Piping . . . . . . . . . . . . . . . . . . . . . . .9
C Gas Table . . . . . . . . . . . . . . . . . . . . . . . .9
PART 4 . . . . . . . . . . . . . . . . . . . .11 thru 17
VENTING
A Approved Venting Materials . . . . . . . .11
BVenting the Munchkin in
4” or 6” Plastic Pipe . . . . . . . . . . . . . .11
CLonger Vent Runs Using a
Combination of 4” to 6” Pipe . . . . . . .14
DHeater Removal from a
Common Vent System . . . . . . . . . . . .15 E Condensate Requirements . . . . . . . . .17
PART 5 . . . . . . . . . . . . . . . . . . . .17 thru 28
PIPING
AHydronic piping with
Circulators or Zone Valves . . . . . . . . .17 B Circulator Sizing . . . . . . . . . . . . . . . . .18 C Fill and Purge Heating System . . . . . .19 D Piping
PART 6 . . . . . . . . . . . . . . . . . . . .29 thru 32
START UP PROCEDURES
AItems to be checked before
lighting the Munchkin . . . . . . . . . . . . .29 B Lighting Instructions . . . . . . . . . . . . . .29 C Operating Instructions . . . . . . . . . . . .30
DAdjusting the Temperature
on the Munchkin Display . . . . . . . . . .30 E Status Menu . . . . . . . . . . . . . . . . . . . .31 F Test Mode . . . . . . . . . . . . . . . . . . . . . .31 G To Turn Off Gas to Appliance . . . . . . .31
PART 7 . . . . . . . . . . . . . . . . . . . .32 thru 36
SERVICING
A Sequence of operation . . . . . . . . . . . .32
BMunchkin Temporary
Fault Condition . . . . . . . . . . . . . . . . . .32
CMunchkin Fault Requiring
Manual Reset . . . . . . . . . . . . . . . . . . .34
PART 8 . . . . . . . . . . . . . . . . . . . .37 thru 41
MAINTENANCE
A Maintenance Procedures . . . . . . . . . .37 B Before Each Heating Season . . . . . . .37
CCondensate Cleaning Instructions . . .37
DCombustion Chamber
Coil Cleaning Instructions . . . . . . . . . .38 E Munchkin Controller . . . . . . . . . . . . . .39
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