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Groen NGB/3E Operator's Manual

Steam boilers, gas heat, 200,000 btu/hr firing rate, 3.7 effective boiler horsepower
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OPERATOR MANUAL
IMPORTANT INFORMATION, KEEP FOR OPERATOR
This manual provides information for:
MODEL NGB/3E
& CNGB/3-24

STEAM BOILERS

· Gas Heat
· 200,000 BTU/hr Firing Rate
· 3.7 Effective Boiler Horsepower
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READ, UNDERSTAND AND FOLLOW THE INSTRUCTIONS AND
WARNINGS CONTAINED IN THIS MANUAL.
WARNING / FOR YOUR SAFETY
and liquids in the vicinity of this or any other appliance.
POST IN A PROMINENT LOCATION
Instructions to be followed in the event user smells
gas. This information shall be obtained by consulting
your local gas supplier. As a minimum, turn off the gas
and call your gas company and your authorized service
agent. Evacuate all personnel from the area.
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, injury or
death. Read the installation, operating and maintenance
instructions thoroughly before installing or servicing this
equipment.
NOTIFY CARRIER OF DAMAGE AT ONCE
It is the responsibility of the consignee to inspect the container upon receipt of
same and to determine the possibility of any damage, including concealed dam-
age. Unified Brands suggests that if you are suspicious of damage to make a
notation on the delivery receipt. It will be the responsibility of the consignee to file
a claim with the carrier. We recommend that you do so at once.
Manufacture Service/Questions 888-994-7636.
Information contained in this document is known to be current and accurate at the time
of printing/creation. Unified Brands recommends referencing our product line websites,
unifiedbrands.net, for the most updated product information and specifications.
PART NUMBER 121003 REV D (07/14)
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1055 Mendell Davis Drive
Jackson, MS 39272
888-994-7636, fax 888-864-7636
unifiedbrands.net

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Summary of Contents for Groen NGB/3E

  • Page 1: Steam Boilers

    OPERATOR MANUAL IMPORTANT INFORMATION, KEEP FOR OPERATOR This manual provides information for: MODEL NGB/3E & CNGB/3-24 STEAM BOILERS · Gas Heat · 200,000 BTU/hr Firing Rate · 3.7 Effective Boiler Horsepower READ, UNDERSTAND AND FOLLOW THE INSTRUCTIONS AND WARNINGS CONTAINED IN THIS MANUAL.

  • Page 2: Important Operator Warnings

    THAT IS HIGHLY ALKALINE. WARNING: USE OF ANY REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY GROEN OR THEIR AUTHORIZED DISTRIBUTOR VOIDS ALL WARRANTIES AND CAN CAUSE BODILY INJURY TO THE OPERATOR AND DAMAGE THE EQUIPMENT. SERVICE PERFORMED BY OTHER THAN FACTORY- AUTHORIZED PERSONNEL WILL VOID ALL WARRANTIES.

  • Page 3: Table Of Contents

    Table of Contents Important Operator Warnings ............page 2 References..................page 3 Equipment Description..............page 4 Water Quality and Treatment ............page 5 Installation .................. page 6-7 Initial Start-Up................page 8 Operation ..................page 9 Sequence of Operation ..............page 10 Cleaning..................

  • Page 4: Equipment Description

    Equipment Description Groen NGB/3E and CNGB/3-24 steam boilers generate low pressure steam for use with HyPlus cabinet mounted steamers and steam jacketed kettles. Both models use a spark ignition system. The boiler is housed in a stainless steel cabinet. Various combinations of steam-operated kettles and steamers can be mounted on the top.

  • Page 5: Water Quality And Treatment

    Water Quality & Treatment REDUCE SCALE PROBLEMS BY USING It is essential to supply the steam generator with water that will not form scale or cause AND MAINTAINING A WATER SOFTENER corrosion. Even though the steam generator is engineered to minimize scale formation FOR YOUR STEAMER! and the effects of corrosion, their development depends on the quality of your water and the number of hours per day you operate the equipment.

  • Page 6: Installation

    DAMAGE. REPORT ANY DAMAGE TO THE FREIGHT CARRIER. CHANGE IN THE UNIT WITHOUT PRIOR After inspection, keep the unit in its shipping container until it is installed. It can be GROEN APPROVAL WILL VOID ALL installed on combustible and non-combustible floors. Minimum clearances are: WARRANTIES.

  • Page 7: Installation

    Installation CAUTION DO NOT LOCATE THE BOILER CABINET Copies of the electrical schematic are located in the electrical enclosure DIRECTLY OVER A FLOOR DRAIN OR FLOOR on the equipment and in this manual. In Canada, electrical service must SINK. HUMIDITY OR WATER FROM WILL comply with the Canadian Electrical Code, CSA C22.1, Part 1, and/or DAMAGE ELECTRICAL.

  • Page 8: Initial Start-Up

    170ºF, the boiler will automatically drain. The pilot is off when the on/off switch is OFF. If the boiler functions as described above, it is ready for use. If it does not, contact your authorized Groen Service Agent. OM-NGB/3...

  • Page 9: Operation

    In addition to operating these controls, there are gas supply controls located on the gas valve. For NGB/3E: When the control knob is “ON,” gas flows to the pilot, as well as to the main burners. Operating Procedure Turn on the water supply to the unit.

  • Page 10: Sequence Of Operation

    Sequence of Operation CAUTION When electrical power is turned on to the unit, the following happens: WAIT AT LEAST 60 SECONDS BEFORE • The drain valve closes ATTEMPTING TO RE-LIGHT THE MAIN • The water valve opens BURNER AFTER IT SHUTS OFF. •...

  • Page 11: Cleaning

    The manual drain valve is pipe plugs from the front of the boiler. located under the boiler. Pour 32 ounces of de-limer (Groen Delimer Descaler - Part Number 114800), or equivalent) into the boiler. Replace the pipe plug. Use pipe joint compound, and tighten the plug securely.

  • Page 12: Cleaning

    Cleaning WARNING 13. Set steamer timers for 10 minutes. SOLUTION AND VALVES WILL BE VERY HOT, AND MAY CAUSE BURNS. PROTECT HANDS 14. When steamer timers sound, turn them to OFF and open the doors. FROM HOT SURFACES AND CONTINUE TO USE PROTECTIVE GLOVES.

  • Page 13: Maintenance

    Component Replacement NGB/3E boilers are easy to service. The design is simple, and controls are readily accessible. Before replacing any part, COMPLETELY SHUT OFF THE GAS AND ELECTRICAL POWER TO THE UNIT.

  • Page 14: Troubleshooting

    Troubleshooting Do not operate the unit if it malfunctions or has damaged or broken parts. NGB/3 and NGB/3/E steam boilers are designed to operate smoothly and efficiently when maintained properly. However, the following is a list of checks to make if there is a problem. Electrical schematics are provided in this manual, and inside the unit electrical enclosure.
  • Page 15 Troubleshooting Main burner will not light User a. Is pilot burner lit? (spark ignition). b. Is the boiler filled with water? Is the green light in the start switch “ON”? Authorized c. Is the igniter-sensor defective? (X) Service Rep Only d.
  • Page 16 Parts List NGB/3 Burner & Gas Valve Description Part # Baffle Plate 083076 Pilot Burner Mounting 102257 Bracket Pilot Burner W/ Spark 102258 Igniter-sensor Shield for Pilot Burner 102260 Flame Deflector (Single 056965 Loop) Holder for #640 Main Burner Assy 0-2000 Ft. 047267 Elev.(Incl.
  • Page 17 Parts List NGB/3 Boiler Description Part # Boiler Weldment MS98221 Sight Glass Assembly 121754 Kit, Repair - Sight Glass 097099 Flue Assembly 099217 Safety Valve (15PSI) 102297 Pressure Relief Valve (12PSI) 099228 Water Level Probes (lo, med, 076526 Solenoid Valve (Water-in) 099220 Check Valve 004187...
  • Page 18 Parts List NGB/3 Electrical Controls Description Part # Switch “On/off” 088876 Switch “Start” (Momentary) 099290 Indicator Light “Reset” 099289 Light, Indicator Amber 116384 Light, Indicator Red (2) 116383 Terminal Block, 2-Pole 003887 Bushing Snap 11/16” ID 012864 Circuit Board Support 099292 Water Level Control Board 116016...

  • Page 19: Electrical Schematic

    Electrical Schematic TO 120V AC TO T3 WHITE SWITCH CONTACT ARRANGEMENT BLACK VIEWED FROM REAR STEAMER FROM T2 TO K7 COIL @ STEAMER @ STEAMER SPRAY VALVE 24VAC 75VA ON SWITCH WHITE TSTAT DRAIN VALVE CLOSES @ 170° BLUE DUAL WATER LEVEL CONTROL BROWN FILL VALVE BLUE...

  • Page 20: Service Log

    Service Log Model No: Purchased From: Serial No: Location: Date Purchased: Date Installed: Purchase Order No: For Service Call: Date Maintenance Performed Performed By OM-NGB/3...
  • Page 21 Service Log Model No: Purchased From: Serial No: Location: Date Purchased: Date Installed: Purchase Order No: For Service Call: Date Maintenance Performed Performed By OM-NGB/3 21...
  • Page 22 Service Log Model No: Purchased From: Serial No: Location: Date Purchased: Date Installed: Purchase Order No: For Service Call: Date Maintenance Performed Performed By OM-NGB/3...
  • Page 23 Service Log Model No: Purchased From: Serial No: Location: Date Purchased: Date Installed: Purchase Order No: For Service Call: Date Maintenance Performed Performed By OM-NGB/3 23...
  • Page 24 1055 Mendell Davis Drive • Jackson MS 39272 888-994-7636 • 601-372-3903 • Fax 888-864-7636 unifiedbrands.net PART NUMBER 121003 REV D (07/14) © 2014 Unified Brands. All Rights Reserved. Unified Brands is a wholly-owned subsidiary of Dover Corporation.

This manual is also suitable for:

Cngb/3-24

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