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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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Table of Contents
Summary of Contents for Dover unified brands Groen NGB/3E
- Page 1 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. WARNING / FOR YOUR SAFETY and liquids in the vicinity of this or any other appliance.
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Page 2: Important Operator Warnings
IMPORTANT - READ FIRST - IMPORTANT WARNING: THE UNIT MUST BE INSTALLED BY PERSONNEL QUALIFIED TO WORK WITH GAS, ELECTRICITY AND PLUMBING. IMPROPER INSTALLATION CAN CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO THE EQUIPMENT. THE UNIT MUST BE INSTALLED IN ACCORDANCE WITH APPLICABLE CODES. NOTICE: LEVEL THE UNIT BEFORE USE. -
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
Installation WARNING WHEN THE UNIT IS RECEIVED, IMMEDIATELY INSPECT IT FOR EXTERNAL OR INTERNAL MAKING ANY ELECTRICAL OR MECHANICAL 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. - Page 7 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.
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Page 8: Initial Start-Up
Initial Start-Up After the unit has been installed, test it to ensure that it is operating properly. Remove literature and packing material from the interior and exterior of the unit. Make certain the water supply is turned on. Turn on electrical power to the unit. Make sure the gas supply line is open, and turn on the gas valve. -
Page 9: Operation
Operation WARNING Controls ALL POTENTIAL USERS OF THE EQUIPMENT Operating controls are located on the front panel of the unit. SHOULD BE TRAINED IN SAFE AND CORRECT The on/off switch starts the unit or shuts it off. OPERATING PROCEDURES. The RESET indicator lights to show that the boiler has filled with water and that the main burners can ignite. -
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
Cleaning WARNING Whenever the boiler is turned off and allowed to cool to about 170ºF, it drains WATER AND VALVES MAY BE VERY HOT, automatically. This should be done every day to minimize scale buildup inside the AND MAY CAUSE BURNS. PROTECT HANDS boiler. - Page 12 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.
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Page 13: Maintenance
Maintenance Your Groen boiler is designed to minimize maintenance, but certain parts may need WARNING to be replaced after prolonged use. For the most part, no user adjustments should USE ONLY GROEN-SUPPLIED PARTS. be necessary. If a need for service arises, only Groen personnel or Authorized Groen USING SUBSTITUTE, UNAUTHORIZED OR Representatives should perform the work. -
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...
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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.
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