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Boiler
Munchkin
Gas-Fired Hot Water Circulating Heater
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MAINTENANCE NOTES
Contents
Main
Page
Page
CONTENTS
Page
Before Installing
(CONTD
PART 2: HOW THE MUNCKIN CONTENDER OPERATES
PART 2: HOW THE MUNCHKIN CONTENDER OPERATES
SYSTEM RELIEF
EXHAUST VENT CONNECTION
PART 2: HOW THE MUNCHKIN CONTENDER OPERATES
SYSTEM RETURN CONDENSATE CUP/DRAIN ASSEMBLY
GAS LINE CONNECTION
COMBUSTION AIR INLET CONNECTION SYSTEM SUPPLY
ELECTRICAL BOX/CONTROL PANEL
NOTICE
Precautions
PART 4: PREPARE MUNCHKIN CONTENDER HEATER
PART 4: PREPARE MUNCHKIN CONTENDER
]]
Expansion tank and make-up water
PART 5: MUNCHKIN CONTENDER PIPING
Diaphragm (or bladder) expansion tank
Sizing space heat system piping
Page
Page
MUNCHKIN CONTENDER PIPING
Piping symbol legend
M.CONTENDER PIPING DETAILS
Standard Munchkin Contender Heater! (zoning with valves) Space heating mode
Drawing 1A
P2
Standard Munchkin Contender Heater (zoning with valves) Domestic water heating mode
Drawing 1B
P2
Standard Munchkin Contender Heater Preferred piping (zoning with circulators) Space heating mode
Drawing 1C
Standard Munchkin Contender Heater (zoning with circulators) Domestic water heating mode
Drawing 1D
Multiple Munchkin Contender Heaters Preferred piping (zoning with circulators) Space heating mode
Drawing 1E
P2
Drawing 1F
PART 6. MUNCHKIN CONTENDER PIPING WITH OPTIONAL VISION I SYSTEM
Munchkin Contender Heater with optional VISION 1 system (zoning with valves) Space heating mode
D. HEATER PIPING DETAILS WITH THE VISION I SYSTEM
Drawing 2A
purge
P1 P2
Drawing 2B
P1 P2
Drawing 2C
P1 P2
Munchkin Contender Heater with optional VISION 1 system (zoning with circulators) Space heating mode
Drawing 3A
P1 P2
Drawing 3B
P1 P2
Drawing 3C
P1 P2
Drawing 3D
purge
P1 P2
Drawing 3E
purge
P1 P2
Drawing 3F
P1 P2
Drawing 3G
P1 P2
PART 7: VENTING, COMBUSTION AIR & CONDENSATE REMOVAL
Page
AROUND OBSTRUCTIONS
EXHAUST PIPING
Page
Page
Page
Page
43
Fig. 7-10 2 sidewall vent with V500 kit
Fig. 7-11 2 sidewall vent with 2 concentric vent kit (KGAVT0501CVT)
Fig. 7-9 2 sidewall vent with tee (intake) and coupling (exhaust)
I. DIAGRAMS FOR SIDEWALL VENTING
44
Fig.7-12 2" roof vent with tee (intake) & coupling (exhaust)
Fig. 7-13 2" roof vent with 2" concentric vent kit (KGAVT0501CVT)
PART 8: GAS PIPING
}
PART 8: GAS PIPING
PART 9: FIELD WIRING
Page
Page
PART 10: FIELD WIRING VISION 1 OPTION
PART 11. START-UP PREPARATION
Water pH between 6.0 and 8.0
Hardness less than 7 grains.
Chlorine concentration less than 200 ppm
Clean system to remove sediment
Page
PART 11. START-UP PREP ARATION
PART 12. START-UP PROCEDURE
FOR YOUR OWN SAFETY READ BEFORE OPERATING
WHAT TO DO IF YOU SMELL GAS
Page
PART 12. START-UP PROCEDURE
PART 13: START-UP PROCEDURES WITH THE VISION 1 OPTION
The Munchkin Contender cannot be programmed while there is a call for heat.
NOTICE
Page
PART 14: TROUBLESHOOTING
60
PART 14: TROUBLESHOOTING
Table 14-2: 925 Control Board FAULT Codes Code Description Remedy
PART 15: MAINTENANCE
Outside Temperature (F) Resistance (ohms)
Heater and Indirect Temperature (F) Resistance (ohms)
PART 14: TROUBLESHOOTING
Page
Fig. 15-1
Fig. 15-2
Fig. 15-3
Light Off Activities
Date completed _______________
HEATER START UP REPORT
Inspection Activities
Date last completed
HEATER INSPECTION AND MAINTENANCE SCHEDULE
Date last completedInspection Activities
HEATER INSPECTION AND MAINTENANCE SCHEDULE