Market Forge M24G Installation Manual

MG SERIES

GAS OPERATED BOILERS

INSTALLATION - OPERATION - MAINTENANCE

MODELS

 M24G
 M36G

44 Lakeside Avenue, Burlington, Vermont 05401 USA

Telephone: [phone] Fax: [phone]

www.mi.com PN 14-0307 Rev D (4/16)

© 2016 - Market Forge Industries Inc.

Your Service Agency’s Address:

Model

Serial number

Boiler installed by

Installation checked by

IMPORTANT

TABLE OF CONTENTS

WARNING: Improper installa­tion, adjustment, alternation,
service or maintenance can
cause property damage, in­jury or death. Read the instal­lation, operation and mainte­nance instructions thoroughly
before installing or servicing
this equipment.

INSTRUCTIONS TO BE FOL­LOWED IN THE EVENT THE
USER SMELLS GAS MUST BE
POSTED IN A PROMINENT LO­CATION. This information may
be obtained by contacting your
local gas supplier.

FOR YOUR SAFETY

Do not store or use gasoline or
other ammable vapors or liq­uids in the vicinity of this or any
other appliance.

INSTALLATION

Introduction .............................................................. 2

Service Connections ..................................................... 4

OPERATION

Control Panel ............................................................ 6

MAINTENANCE

Cleaning the Boiler ....................................................... 7

The information contained in this
manual is important for the prop­er installation, use, and mainte­nance of this boiler. Adherence
to these procedures and instruc­tions will result in satisfactory
baking results and long, trou­ble free service. Please read
this manual carefully and retain
it for future reference.

ERRORS: Descriptive, typo­graphic or pictorial errors are
subject to correction. Speci­cations are subject to change
without notice.

Introduction

TO THE KITCHEN MANAGER:

1. Read this manual carefully and in its entirety. Contact

Market Forge Ind., Inc. for clarication if necessary.

2. Protect your kitchen personnel from scalding and
other serious injury by providing training programs to

acquaint all equipment operators with the correct and

safe methods of operation.

3. Operators must be made aware of the consequences

of misuse. Steam producing equipment, no matter

who the manufacturer, is inherently dangerous when
misused. The possibility of serious scalding always
exists; the careless and/or untrained operator will be
injured.

4. This equipment must be maintained according to the
guidelines in this manual (see “maintenance”). Lack
of maintenance will lead to a potentially hazardous
condition and possible liability. Operators should re-

port any equipment malfunction immediately and

steps must be taken to correct the problem before

further use of the equipment is allowed.

5. Keep this manual for daily reference.

Market Forge, in the interest of both cost and efciency

has designed these steam boilers with the latest auto­matic controls in order to make it easier for the operator
to use and maintain this equipment. Standard compo­nents are utilized on all models unless variances in size
or capacity dictate a divergence from this policy for more

efciency of operation. This parts and service manual is
written and illustrated to cover all steam boiler equipment

that uses gas as a source of fuel other than those which
have been custom designed under special order.

THEORY OF OPERATION FOR GAS BOILER

An explanation of how the control system operates on au­tomatic gas boilers follows:

After the boiler is lled with water to the proper level and

the fuel switch is turned ON, the main gas valve will be

activated allowing gas to ow to the main burners that will

be ignited by the Spark Pilot. When the boiler builds to its
set pressure, the pressure switch opens. This will open

the circuit to the gas valve that will stop the ow of gas

to the main burners. As the pressure in the boiler drops
the pressure control switch will again complete the circuit
and build the boiler back to its set pressure. To stop all
steam generation place the FILL/ON-OFF switch to the
OFF position.

CAUTION

Be sure to read.

• Keep this appliance area free and clear from com­bustibles.

• Do not obstruct the ow of combustion and ventila­tion air.

• Keep this manual for future reference.

• This installation must conform with local codes, or in
the absence of local codes, with the National Fuel
Gas code, ANSI Z223.1-Latest Edition. For installa­tion in Canada, this appliance is to be in accordance
with the current CAN/CGA-B149 (.1 or .2) Installa­tion Code for Gas Burning Appliances and Equip­ment and/or Local Codes.

• This appliance, when installed, must be electrically
grounded in accordance with local codes, or in the
absence of local codes, with the National Electric
Code, ANSI/NFPA70-Latest Edition. For installation
in Canada, All electrical connections are to be made
in accordance with CSA C22.1 Canadian Electrical
Code Part 1 and/or Local Codes.

INSTALLATION

• The boiler and its individual shut off valve must be
disconnected from the gas supply piping system
during any pressure testing of that system at test
pressure in excess of 1/2 PSI (0.03 kg/cm2).

• The boiler must be isolated from the gas supply
system by closing its individual manual shut off valve
during any pressure testing of the gas supply piping

system at test pressures equal to or less than 1/2

PSI (0.03 kg/cm2).

• The wiring diagram label is located on the inside of
the Lift-Off Front Panel.

2