Munchkin HIGH EFFICIENCY HEATER with the "925" Controller - User Manual

HEAT TRANSFER PRODUCTS, INC.
120 BRALEY RD., E. FREETOWN, MA 02717
Installing, Operating & Maintaining
MUNCHKIN™ HIGH EFFICIENCY HEATER
with the “925” Controller
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch: do not use any phone in
your building.
• Immediately call your gas supplier from a neighbor's phone.
Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire department.
Installation and service must be performed by a qualified
installer, service agency or the gas supplier.
WARNING
If the information in this manual is not followed exactly, a fire or explosion may
result causing property damage, personal injury or loss of life.
WARNING
This manual must only be used by a qualified heating installer / service
technician. Failure to comply could result in severe personal injury, death or
substantial property damage. It is also important to keep these Instructions
with the appliance.
MH27745
CONTROLS

Summary

ELECTRICAL

ELECTRICAL CONNECTION

Details the procedure and requirements for connecting power and controls to the unit.

WIRING DIAGRAMS

GAS CONNECTION

GAS CONNECTION

Covers the essential steps and safety precautions for connecting the gas supply.

VENTING

APPROVED VENTING MATERIALS

VENTING THE MUNCHKIN

Provides code restrictions and guidelines for vent terminal location and installation.

CONDENSATE REMOVAL

PIPING

HYDRONIC PIPING WITH CIRCULATORS OR ZONE VALVES

Guides installation for closed loop systems with circulators or zone valves.

FILL AND PURGE HEATING SYSTEM

START-UP PROCEDURES

SEQUENCE OF OPERATION

Describes the step-by-step process the control follows from power-on to heating.

ITEMS TO BE CHECKED BEFORE LIGHTING THE MUNCHKIN

Lists essential checks before the initial startup of the appliance.

LIGHTING INSTRUCTIONS

Provides safety warnings and instructions for lighting the burner.

OPERATING INSTRUCTIONS

TO TURN OFF GAS TO APPLIANCE

TROUBLESHOOTING

MUNCHKIN ERROR CODE

Explains temporary error codes that may lead to controller lockout and require manual reset.

BOILER ERROR

BOILER FAULT

Details how fault conditions are indicated and how to clear them.

MAINTENANCE

MAINTENANCE PROCEDURES

BEFORE EACH HEATING SEASON

CONDENSATE CLEANING INSTRUCTIONS

Provides step-by-step instructions for cleaning the condensate line and trap.

COMBUSTION CHAMBER COIL CLEANING INSTRUCTIONS

Details the procedure for cleaning the combustion chamber coils and burner assembly.

Munchkin HIGH EFFICIENCY HEATER with the "925" Controller Specifications

General

Brand	Munchkin
Model	HIGH EFFICIENCY HEATER with the "925" Controller
Category	Boiler
Language	English