Munchkin VWH High Efficiency Hot Water Supply Boiler User Manual
Page 3
TABLE OF CONTENTS
3
TABLE OF CONTENTS
PART 1 . . . . . . . . . . . . . . . . . . . . . .4 thru 8
GENERAL INFORMATION
A
How It Operates . . . . . . . . . . . . . . . . . .4
B
Munchkin Ratings and Dimensions . .5–7
C
Pre-installation Requirements . . . . . . .7
D
Pressure Relief Valve . . . . . . . . . . . . . .8
PART 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
ELECTRICAL
A
Electrical Connection . . . . . . . . . . . . . .9
PART 3 . . . . . . . . . . . . . . . . . . . .10 thru 11
GAS CONNECTION
A
Gas Connection . . . . . . . . . . . . . . . . . .10
B
Gas Piping . . . . . . . . . . . . . . . . . . . . . .10
C
Gas Table . . . . . . . . . . . . . . . . . . . . . . .10
PART 4 . . . . . . . . . . . . . . . . . . . .12 thru 18
VENTING
A
Approved Venting Materials . . . . . . . .12
B
Venting the Munchkin in
3”, 4” or 6” Plastic Pipe . . . . . . . . . . .12
C
Longer Vent Runs . . . . . . . . . . . . . . .14
D
Heater Removal from a
Common Vent System . . . . . . . . . . . .15
E
Condensate Removal . . . . . . . . . . . . .16
PART 5 . . . . . . . . . . . . . . . . . . . .19 thru 29
PIPING
A
Expansion Tank . . . . . . . . . . . . . . . . . .19
B
High Velocity Circulator Pump . . . . . .19
PART 6 . . . . . . . . . . . . . . . . . . . .30 thru 34
START UP PROCEDURES
A
Sequence of Operation . . . . . . . . . . .30
B
Items to be checked before
lighting the Munchkin . . . . . . . . . . . . .30
C
Lighting Instructions . . . . . . . . . . . . . .31
D
Operating Instructions . . . . . . . . . . . .31
E
Adjusting the Operating Set Points
of the Munchkin VWH Display . . . . . .31
F
Status Menu . . . . . . . . . . . . . . . . . . . .32
G
Test Mode . . . . . . . . . . . . . . . . . . . . . .32
H
To Turn Off Gas to Appliance . . . . . . .33
PART 7 . . . . . . . . . . . . . . . . . . . .35 thru 37
TROUBLESHOOTING
A
Munchkin Error Code . . . . . . . . . . . . .35
B
Boiler Error . . . . . . . . . . . . . . . . . . . . .35
C
Boiler Fault . . . . . . . . . . . . . . . . . . . . .35
PART 8 . . . . . . . . . . . . . . . . . . . .38 thru 43
MAINTENANCE
A
Maintenance Procedures . . . . . . . . . .38
B
Annual Maintenance . . . . . . . . . . . . . .38
C
Condensate Cleaning Instructions . . .38
D
Combustion Chamber
Coil Cleaning Instructions . . . . . . . . . .39
E
Munchkin Controllers . . . . . . . . . . . . .40