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? IMPORTANT INFORMATION
OPERATOR MANUAL
Part Number 121003
Model: NGB/3, NGB/3/E
Steam Boilers
Gas Heated
200,000 BTU/hr firing rate
120,000 BTU into product
3.7 effective boiler horsepower
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE
VICINITY OF THIS OR ANY OTHER APPLIANCE.
READ THE INSTALLATION, OPERATING AND MAINTENANCE INSTRUCTIONS THOROUGHLY
BEFORE INSTALLING, OPERATING OR SERVICING THIS EQUIPMENT.
INSTRUCTIONS TO BE FOLLOWED IN THE EVENT USER SMELLS GAS. THIS INFORMATION
SHALL BE OBTAINED BY CONSULTING YOUR LOCAL GAS SUPPLIER. AS A MINIMUM,
IMMEDIATELY TURN OFF THE GAS AND CALL YOUR GAS COMPANY AND YOUR
AUTHORIZED SERVICE AGENT. EVACUATE ALL PERSONNEL FROM THE AREA.
IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE CAN
CAUSE PROPERTY DAMAGE, INJURY OR DEATH.
? KEEP FOR OPERATOR
FOR YOUR SAFETY
POST IN A PROMINENT LOCATION
WARNING
Information contained in this document is
known to be current and accurate at the time
of printing/creation. Unified Brands recom-
mends referencing our product line websites,
unifiedbrands.net, for the most updated
product information and specifications.
? IMPORTANT INFORMATION
?
OM-NGB/3
DOMESTIC
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Related Manuals for Groen NGB/3 Series
Summary of Contents for Groen NGB/3 Series
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Page 1: Important Information
? IMPORTANT INFORMATION ? KEEP FOR OPERATOR ? IMPORTANT INFORMATION OPERATOR MANUAL OM-NGB/3 DOMESTIC Part Number 121003 Model: NGB/3, NGB/3/E Steam Boilers Gas Heated 200,000 BTU/hr firing rate 120,000 BTU into product 3.7 effective boiler horsepower FOR YOUR SAFETY DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE. - Page 2 Do not use a de-greaser that contains potassium hydroxide or sodium hydroxide or 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.
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Page 3: Table Of Contents
OM-NGB/3 Table of Contents OPERATOR WARNINGS ..............2 EQUIPMENT DESCRIPTION . -
Page 4: Equipment Description
However, most water supplies carry heavy loads of 5. Groen gas and electric pressure boilers are minerals. This will form scale on the boiler, reduce available with two separate water intakes: its steam output, and possibly cause premature component failure. - Page 5 MAKING ANY ELECTRICAL OR MECHANICAL WHEN THE UNIT IS RECEIVED, IMMEDIATELY CHANGE IN THE UNIT WITHOUT PRIOR INSPECT IT FOR EXTERNAL OR INTERNAL GROEN APPROVAL WILL VOID ALL DAMAGE. REPORT ANY DAMAGE TO THE WARRANTIES. FREIGHT CARRIER. After inspection, keep the unit in its shipping 1.
- Page 6 A strainer screen at the connection is also recommended, to trap any debris before it can enter the system. c. The NGB/3 boiler uses a maximum of 12.9 gallons of water per hour. Piping should be sized to handle total water consumption.
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Page 7: Initial Start-Up
When the pressure reaches 9- 1/2 PSI, the main burner will turn off. Thereafter, a. For NGB/3: Turn the knob on the gas valve to as pressure decreases, the burner will “PILOT,” then push the knob inward and hold, automatically re-light to maintain the 9-1/2 PSI while lighting the pilot burner. - Page 8 5) The green light in the switch will come on, supply controls located on the gas valve. the RESET light will go off, and the main a. For NGB/3: The control knob is turned to the burner will light. “PILOT” position and held down to light the 6) When the water level reaches the “hi”...
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Page 9: Sequence Of Operation
OM-NGB/3 Sequence of Operation When electrical power is turned on to the unit, the problem which caused the shut-down has been following happens: corrected. As an additional safety measure, the unit is • The drain valve closes equipped with an A.S.M.E.-certified safety valve •... -
Page 10: Cleaning
FROM HOT SURFACES AND WATER. water quality and hours of operation. Minimally, Groen recommends cleaning the boiler at least once each month. 1. Turn the boiler on/off switch to the OFF position. 2. Slowly open the manual drain valve to empty A. - Page 11 GLOVES AS RECOMMENDED BY DE-LIMING AGENT MANUFACTURER. 19. Turn the on/off switch OFF, and slowly open the manual drain valve. 8. Pour 32 ounces of de-limer (Groen Delimer Descaler - Part Number 114800), Lime-a-Way® or equivalent) into the boiler. CAUTION...
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Page 12: Maintenance
Component Replacement done, and who did it. Keep this log with the NGB/3 and NGB/3/E boilers are easy to service. warranty. The design is simple, and controls are readily accessible. -
Page 13: 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 14 OM-NGB/3 SYMPTOM WHAT TO CHECK Items marked with (X) should only be done by a factory-authorized service rep. Pilot burner will not light User can a. Is supply gas valve open? (spark ignition) check b. Is gas valve knob in the “ON” position? c.
- Page 15 OM-NGB/3 Troubleshooting (Continued) SYMPTOM WHAT TO CHECK Items marked with (X) should only be done by a factory-authorized service rep. Boiler blows down Auth a. Is the thermostatic switch defective? Check for loose electrical immediately when turned off. Service connections on switch. (X) Rep Only Boiler does not drain.
- Page 16 OM-NGB/3 Parts List NGB/3 Burner and Gas Valve NATURAL GAS PROPANE GAS Description Part No. Description Part No. Baffle Plate 083076 Baffle Plate 083076 Pilot Burner Mounting Bracket 102215 Pilot Burner Mounting Bracket 102215 Pilot Burner (Standing Pilot) 102249 Pilot Burner (Standing Pilot)
- Page 17 OM-NGB/3 Parts List NGB/3 Boiler Description Part No. Description Part No. Boiler Weldment MS98221 Air Vent 084098 Sight Glass Assembly 071534 Vacuum Breaker 090787 Kit, Repair - Sight Glass 097099 Globe Valve 1/2"NPT 099255 Flue 099217 Operating Pressure Switch-9½ PSI...
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Page 18: Parts List
OM-NGB/3 Parts List NGB/3 Electrical Controls Description Part No. Description Part No. Switch "On/off" 088876 Fuse, 15 AMP (250VAC) 087946 Switch "Start" (Momentary) 099290 Relay 24VAC Coil 074842 Indicator Light "Reset" 099289 Transformer 120/208/240V Pri-24V 094164 Sec. Circuit Board Supports (1/2" High) - Page 19 OM-NGB/3 Electrical Schematic NGB/3 (Standing Pilot)
- Page 20 OM-NGB/3 Electrical Schematic NGB/3/E (Spark Ignition)
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Page 21: References
OM-NGB/3 References AMERICAN GAS ASSOCIATION LABORATORIES 8501 East Pleasant Valley Road Cleveland, Ohio 44131 AMERICAN NATIONAL STANDARDS INSTITUTE 1403 Broadway New York, New York 10018 Z21.30 Installation of Gas Appliances and Gas Piping Z223.1 (latest edition) National Flue Gas Code... -
Page 22: Service Log
OM-NGB/3 Service Log Model No. Purchased From Serial No. Location Date Purchased Date Installed Purchase Order No. For Service Call Date Maintenance Performed Performed by... - Page 23 Groen Foodservice Equipment (“Groen Equipment”) has been skillfully manufactured, carefully inspected, and packaged to meet rigid standards of excellence. Groen warrants its Equipment to be free from defects in material and workmanship for (12) twelve months, with the following conditions and subject to the following limitations.
- Page 24 1055 Mendell Davis Drice Jackson, MS 39272 Telephone 888-994-7636 OM-NGB/3 (Revised 12/97) Part Number 121003...
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