Operating instructions

I-B. LOCATION

_WARNING:

MUNCHKIN MUST BE SET ON A LEVEL SURFACE SO

CONDENSATION DOES NOT BACK UP INSIDE BOILER.*

The Munchkin is designed for Installation on combustible flooring, in alcoves, basements, closets, utility rooms. The

Mnnchkin shall be installed so that the gas ignition system components are protected from water. This includes all related

piping and components.

Choose a location for your Munchkin, centralized to the piping system, along with consideration to vent pipe length. As the

length of vent pipe increases the firing rate of the Munchkin decreases. You must also locate the Munchkin where it will not

be exposed to freezing temperatures. Additionally, you will need to place the heater so that the controls, inletJoutlet, and gas

valve are easily accessed. This Munchkin must not be installed outdoors, as it is certified as an indoor appliance, and must be

kept vertical and on a level surface. Also, care must be exercised when choosing the location of this appliance; where leakage

from the relief valve, from related piping will not result in damage to the surrounding areas or to the lower floors of the

building. A heater should always be located in a area with a floor drain or installed in a suitable drain pan. Proper

clearance must be provided around the Munchkin as follows: Sides, bottom, top, and back are 0" (zero clearance). Venting is

also zero clearance. Front of the appliance needs 4" service clearance minimum. This front service may be achieved by a non-

rated or combustible door or access panel; providing the 4" front, 15" on top, and 16" either side service clearance is achieved

when the front cover is removed. Under no circumstances, shall Heat Transfer Products Inc. be held liable for any such

water damage whatsoever. This heater must not be located near flammable liquids such as gasoline, adhesives,

solvents, paint thinners, butane, liquefied propane, etc.; as the controls of this appliance could ignite those vapors,

causing an explosion.

1-C. PRESSURE RELIEF VALVE

A pressure relief valve is installed into the front right side manifold we recommend a WATTS ¾"M 335 MI valve or

equivalent and meets the requirements of ANSI/ASME Section IV for heating boilers. A 3A"pipe must be directed to a floor

drain or suitable location within 6" of drain or floor. Protect from freezing, do not plug or cap pressure relief valve. Serious

explosion causing property damage and or loss of life could result. Under no circumstances should the relief valve be

eliminated, capped or plugged.

SERVICING - _ WARNING - CAUTION

Before servicing let the munchkin cool down! Shut off electrical and gas supply.

Failure to follow warning could result in severe burn, electrical shock, gas

leakage, fire or explosion.

PART 2

2-A. ELECTRICAL CONNECTION

The electrical connection for the Munchkin is on the left side of the unit. There is a t½,,knockout location for electrical

connection. All electrical wiring must be performed by a qualified licensed electrician, and in accordance with National

Electrical Code, or to the applicable local codes and standards. For your convenience we have labeled all the wire which needs

to be connected to operate the Munckin. Caution: Do not remove labels on wires prior to disconnection. The electrical

requirements are for standard 120 volts, 60 Hz 10 amp service. This unit must be wired with #14 awg, and fused for no more

than 15 amps. It is of extreme imnortance that this unit be nronerlv _rounded! There are two ground points in the

electrical compartment that must be connected to the building ground system. Connect the building to the green ground screw

and the green ground wire. It is very imnortant that the buildin_ system around is insnected by a uualified electrician.

prior to makin_ this connection.

The black wire is the hot lead and white wire is the neutral lead. Once all connections have been made the electrical

access may be closed. It is very imnortant that the electrical nower is not turned on at this time! A green LED is

provided on the main control board. This LED must be illuminated when the Mnnchkin is turned on for proper

operation.