Market Forge MFGB-20 Installation Manual

Self-Contained, GAS OPERATED

Models:

35

Garvey St., Everett, MA

02149

-

4403

Tel.

(617) 387

-

Steam-Jacketed Kettles

OWNERS MANUAL

FACSIMILE # [phone]
OUTSIDE MA [phone]

Form No. S-2377 Printed in U.S.A. 11 /89

STATIONARY

4100, Telex 94-9414, Cable MAFORCO

MFGB-20
MFGB-30
MFGB-40
MFGB-60
MFGB-80

MFGB-20-5
MFGB-30-5
MFGB-40-5
MFGB-60-5

MFGB-80-5

Market Forge Co.

Everett, Massachusetts 02149-4403

LIMITED ONE YEAR WARRANTY

We warrant that Market Forge® cooking equipment will be free from defects in material and factory workmanship for a
period of one year from the EFFECTIVE WARRANTY DATE, which shall be the date the equipment is placed in service or
15 months from date of shipment from our factory, whichever comes first. Providing the equipment is unaltered, has been
properly installed, maintained and operated, we will repair or replace, at our option, F.O.B. Everett, Massachusetts, that
part of any such equipment that becomes defective due to defects in material and/or factory workmanship during the
applicable warranty period, subject to the following limitations.

Market Forge® will replace, repair, or adjust at no cost any part of all equipment which becomes defective due to material
or factory workmanship within ninety (90) days of the EFFECTIVE WARRANTY DATE. Any labor required for any such
repair, replacement or adjustment after ninety (90) days shall be paid by the user or dealer, unless our extended labor
warranty contract has also been purchased to cover this particular equipment Adjustments are only covered in the first
30 days of the one-year warranty.

With respect to STEAM BOILER SHELLS only, there is an additional four (4) year warranty limited to the replacement of
such shells. Whenever we replace a steam boiler shell after one (1) year from the EFFECTIVE WARRANTY DATE, the
user shall pay a pro-rata share of the then selling price thereof based on the number of months elapsed from the
EFFECTIVE WARRANTY DATE. There is no labor compensation when boiler shells are pro-rated. Boiler shells which
have not been properly maintained will not be considered for proration. Factory inspection may be necessary. *Boiler
shells should be descaled every 90-120 days, by an authorized service agent to insure efficiency and avoid premature
failure.

There is only a 90 day parts and labor warranty on the following: gaskets, steam traps, air vents, knobs, dynaseal
washers, rubber washers, cathodic descalers or anodes, sight glass. Any parts used in conjunction with a boiler descaling
(cleaning) are the responsibility of the owner/user regardless of time in use.

All warranty service, labor or parts (shipped or replaced) must be performed by the appointed Market Forge authorized
service agent for your area. Any repairs performed by non-authorized services will void the warranty. We reserve the right
to disallow any request for reimbursement of charges incurred by others.

WITH RESPECT TO EQUIPMENT REQUIRING WATER CONNECTIONS, WATER SUPPLY SHOULD BE ANALYZED
TO MAKE SURE HARDNESS IS NO GREATER THAN 2.0 GRAINS PER GALLON, PH LEVEL IS WITHIN THE RANGE
OF 7.0-8.5 AND TDS LEVEL NO GREATER THAN 250 P.P.M., WATER WHICH FAILS TO MEET THESE STANDARDS
SHOULD BE TREATED BY INSTALLATION OF A WATER CONDITIONER. EQUIPMENT FAILURE CAUSED BY
INADEQUATE WATER QUALITY IS NOT COVERED UNDER WARRANTY.

THIS WARRANTY IS LIMITED TO COOKING EQUIPMENT INSTALLED WITHIN THE CONTINENTAL UNITED STATES
AND CANADA, IN ALASKA, HAWAII, AND ELSEWHERE OUTSIDE CONTINENTAL U.S. AND CANADA. THIS
WARRANTY IS LIMITED TO THE REPLACEMENT OF PARTS ONLY.

THERE ARE NO WARRANTIES, EXPRESSED OR IMPLIED, MADE BY MARKET FORGE® FOR ITS COOKING
EQUIPMENT EXCEPT THIS WARRANTY, WHICH IS EXPRESSLY IN LIEU OF ANY OTHER WARRANTIES,
EXPRESSED OR IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE AND IN LIEU OF ALL OTHER OBLIGATIONS OR LIABILITY ON THE PART OF MARKET
FORGE®, INCLUDING LI ABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES OR FOR LOSS OF PROFITS
OR GOODWILL NO OTHER WARRANTIES ARE AUTHORIZED ON BEHALF OF MARKET FORGE®. MARKET
FORGE® COOKING EQUIPMENT IS NOT DESIGNED FOR PERSONAL, FAMILY OR HOUSEHOLD PURPOSES, AND
ITS SALE FOR SUCH PURPOSES IS NOT INTENDED, BUT IN THE EVENT THAT OUR COOKING EQUIPMENT IS
SO USED, THEN THIS WARRANTY SHALL NOT APPLY AND THE EQUIPMENT SHALL BE SOLD AS IS, WITHOUT
WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE.

TABLE OF CONTENTS

Page

SECTION 1 INSTALLATION & OPERATION 1 -8
SECTION 2 INTRODUCTION 9
SECTION 3 TROUBLESHOOTING & MAINTENANCE 10-18
WIRING DIAGRAMS 19-20
SECTION 4 ILLUSTRATED PARTS LIST 21 -29

INSTALLATION INSTRUCTIONS

1. Mounting and Location:
Unpack unit carefully, check for any damage that may have occurred during shipment. Notify

the carrier and Market Forge Co. if any damage was sustained.

The kettle must be installed on a non -combustible floor. Minimum clearance from combustible
construction to be six (6) inches from side and back, and two (2) inches from the draft hood.
Provide a minimum clearance of fifteen (15) inches for servicing controls. Position kettle in its
designated area.

Level kettle by adjusting feet.

2. Flue

Connect draft hood furnished to the kettle flue outlet. Connect to the draft hood a vertical run
of flue pipe at least four (4) feet — can be shorter if positioned under kitchen hood. It is
recommended that flue gases be vented to a ventilating hood or directly to the atmosphere
(outside air).

Kettles have seven (7) inch diameter flue pipe except 20 gal. (MFGB 20) which has six (6)
inch diameter.

3. Gas

Connect gas control valve to gas supply line minimum of 1/2" IPS.
NOTE: It is important that the gas supply line be capable of furnishing sufficient supply of gas

required. Use threaded pipe joint compound resistant to the action of LP gases for all
installations including those for natural gas. Check for gas leakage at piping
connections with soapy water. Do not use an open flame to check for gas leaks.
Required BTU of gas per hour is indicated on kettle rating plate.

4. Electrical Connection
Connect a 120 volt 60 HZ 1 PH power supply (input) at the control enclosure.

NOTE: Wire used for electrical installation must be of rated temperature of 90 degrees C
minimum, 14 AWG minimum.

CAUTION: Kettle must be electrically grounded for safe operation. An electrical ground
connection is provided.

A wiring diagram is located inside the controls housing.

5. Water Feed Connection

Manual Fill:
No external water connections are necessary.

6. Water Fill Procedure

Manual Fill Models:
To fill, open valve and place a funnel in the inlet nipple. Add water to the maximum level on the
gauge glass. Remove funnel and close valve tightly.

CAUTION: Steam jacket should be filled with water having a hardness no greater than 2.0 grains and

a pH between 7.0 and 8.5 only. See the above table for the quantity of water required to fill
the steam jacket to the proper level.

TO ADD WATER TO THE STEAM JACKET

1. Allow kettle to cool. Never attempt to add water to a hot kettle.

2. Lift the safety valve lever to release any residual steam contained in the steam jacket.

3. Place the thermostat in the off position. Disconnect electric power at the customer supplied
electrical cut off device.

4. Open the globe valve and place a funnel in the inlet nipple. See the above sketch.

5. Pour water into funnel. Lift safety valve lever to allow air to escape from the jacket. Continue adding
water until water in the jacket exceeds the minimum level. Do not fill above maximum level.

6. Remove the funnel, close the globe valve tightly, and restore power to the kettle.

CAUTION: Drain the steam jacket if the kettle is stored in an unheated area. Water freezing in the

steam jacket may result in permanent damage to the unit.

APPLIANCE FAILURE CAUSED BY INADEQUATE WATER QUALITY IS NOT COVERED UNDER
WARRANTY.

INSTALLATION INSTRUCTIONS

7. Burner Operating Procedure For (Standing) Pilot (MFGB MODELS)

1. Turn thermostat dial to "off".

2. Turn gas control knob on valve to "off".

3. Wait 5 minutes for gas to vent.

4. Light match. Turn gas control knob to "pilot", depress and hold down.

5. Light pilot and continue holding knob depressed for one (1) minute.

6. Release and turn knob to "on".

NOTE: If pilot does not stay on repeat Steps 1 thru 5.

7. Burner lights when thermostat is set to desired temperature.

Burner Shut Down Procedure

1. Turn thermostat dial to "off".

2. Turn gas control knob to the "pilot" position, depress slightly, and then turn to the "off" position.

GAS VALVE-MODEL MFGB

INSTALLATION INSTRUCTIONS

8. Burner Operating Procedure For Intermittent Pilot Spark Ignition (MFGB-5 MODELS)

CAUTION

This Kettle is equipped with Electronic Spark Ignition, DO NOT attempt to light manually.

1. Turn thermostat dial to "off".

2. Turn gas control knob to "on".

3. Burner lights when thermostat is set to desired temperature.

Burner Shut Down Procedure

1. Turn thermostat dial to "off".

2. Turn gas control knob to "off".

GAS VALVE-MODEL MFGB-5

NOTES:

1. Clearance from combustible construction 6"
(152mm) sides and back; 2" (51mm) from flue.

2. T&S b 206 cold water 12" swing nozzle V4 N.P.T.
inlet with integral faucet —available as shown if
specified, other T&S water fill devices also
available if specified.

GAL

A 22 /559 23 /584 25 1/2 / 648 29% / 749 32 1/2 / 826
B 16 /406 20 1/4/514 22'/4/572 25 /635 27% / 702
C 28'/4/718 29 1/4/743 31 3/4/806 35% / 908 38% / 984
D 21 /533 22 /559 23 /584 25 /635 26 /660

E 17 /432 17 /432 21 /533 22 /559 23% / 597

F 56 /1422 63 /1600 66 /1676 76 /1930 82 /2083
G 15 /381 14 3/4/375 15 1/4/387 16 1/2/419 17 1/4/438
K 33% / 851 37 1/2 / 953 40 /1016 44 /1118 47 1/4/1200

L 171/4/438 17 3/4/451 19 /483 21 /533 22% / 572
M 6 /152 7 /178 7 /178 7 /178 7 /178

SERVICE CONNECTIONS Gas Fired

G

Gas Connection—1/2" (13mm) I.P.S.
Electrical Connection—115 VAC, 60Hz, single

E

phase, 1 amp. Use wire suitable for at least 90°C.

DIMENSIONS

20 30 40 60 80

IN./MM IN./MM IN./MM IN./MM IN./MM

N 1614/410 16 5/5/422 17 7/8/454 197, / 505 21 3/8/518

FIRING RATE BTU/HR

SIZE NATURAL PROPANE
20 GAL. 90,000 90,000
30 GAL. 120,000 110,000
40 GAL. 120,000 110,000

60 GAL. 125,000 125,000
80 GAL. 125,000 125,000

CAUTION:
Before connecting water to this unit, have water supply analyzed to
make sure hardness is no greater than 2.0 grains and pH level is no
greater than 7.0-8.5. Water which fails to meet these standards
should be treated by installation of a water conditioner.
EQUIPMENT FAILURE CAUSED BY INADEQUATE WATER
SUPPLY IS NOT COVERED UNDER WARRANTY.

OPERATING INSTRUCTIONS

Daily Operation

1. Check water level in the water gauge glass. Refilling the steam jacket is seldom necessary,
however should the water level go below the minimum level, add water to the maximum level mark.

IMPORTANT: Use soft water. DISCONNECT ELECTRIC POWER.

CAUTION: NEVER ATTEMPT TO FILL KETTLE WHEN IT IS HOT.

To fill, open valve and place a funnel in the inlet nipple - add water. Remove funnel and close valve

tightly. See instructions on page 2 for filling instructions.

2. Set the thermostat dial to the desired cooking temperature, the main burner will light. The kettle will
heat the product in the cooking chamber to the pre-set temperature and automatically maintain the
temperature for an indefinite period of time.

New Temperature Setting:
If a new temperature is desired during cooking operation simply turn thermostat dial to new setting.
Should the new temperature desired be more than 60 degrees F. lower than the initial setting, it will be

necessary to wait for the kettle temperature to drop. Unit will again maintain temperature setting.

OPERATING AND MAINTENANCE

INSTRUCTIONS

Maintenance

1. Wash kettle before and after each use with hot soapy water and rinse thoroughly with clean water.

Dry thoroughly.

2. Periodically, the main burner and the surrounding attached parts should be cleaned with a damp

cloth.

3. In the event the controls require cleaning, care must be taken to prevent moisture from settling on

the controls.

4. The stainless steel surface of the kettle may be polished with any recognized commercial stainless

steel cleaner.

5. Steel wool should not be used.

6. The safety relief valve should be tested daily when the kettle is under pressure. To test, raise lever

and discharge steam.

CAUTION: VALVE IS HOT!

If opening lever fails to discharge steam, notify service personnel at once.

7. Examine the venting system once or more a year and clean as required.

Servicing

Contact the factory at the address shown on the front of this manual, the factory representative or a
local authorized service company to perform maintenance or repairs.