Groen NGB, Руководство оператора

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Equipment Description
The Groen NGB and NGB/E steam generators are designed to generate Low pressure steam tor use in GOLDLINE
cabinet mounted steamers and steam jacketed kettles.
The generator is housed in a stainless steel cabinet on top of which can be mounted various combinations of
steamers and kettles requiring a steam supply. It is small enough to fit in a 24 inch wide cabinet.
The NGB and NGB/E feature an easily accessible control box, which may be pulled out through the cabinet door for
servicing. (See Troubleshooting section of this manual.)
The generator itself is constructed or
1/ 4 inch-boiler plate according to ASME code (all welds are hydrostatically
tested) and is equipped with all required instruments, fittings, and controls.
Heat transfer fins inside the combustion chamber add to the high efficiency of this unit. The NGB and NGB/E are
both rated as 60% efficient or better, with a firing rate of 200,000 BTU/hr using propane or natural gas. The energy
output is 120,000 BTU/hr and effective boiler horsepower is 3.6.
The two models are distinguished by different ignition systems. to ignite the burners. Model NGB utilizes a standing
pilot but Model NGB/E employs a Corborundum glow coil.
Installation
WARNING: INSTALLATION OF THE STEAM GENERATOR MUST BE DONE BY PERSONNEL QUALIFIED TO WORK
WITH ELECTRICITY AND PLUMBING. IMPROPER INSTALLATION CAN CAUSE INJURY TO PERSONNEL
AND/OR DAMAGE TO THE EQUIPMENT. ANY MECHANICAL, ELECTRICAL, OR GAS TYPE CHANGE
MUST BE APPROVED BY THE GROEN DIVISION FOOD SERVICE ENGINEERING DEPARTMENT.
The unit should be installed in a ventilated room for efficient performance. All items which may obstruct or restrict
the flow of air for combustion and ventilation must be removed. The area directly around the appliance must be
cleared of all combustible materials.
1. Installation on both combustible and noncombustible floors is allowed, with a minimum clearance to
combustible construction of six (6) inches at the rear and six (6) inches at each side.
2. Installation of the Gas Steam Generator under a ventilating hood is required. Installation of the ventilating
hood should comply with local codes and/or ANSl/NFPA-96 Latest Edition. Also, the Gas Steam Generator
should be electrically interlocked to shut off the gas supply and prevent the operation or the unit if the exhaust
fan is not operating or if the fire suppression system is activated. Failure to follow these instructions can
cause bodily injury and/or property damage.
3. Level the unit by adjusting the legs. and check for levelness with a spirit level on top of the cabinet.
4. Complete the piping to the gas service main using
1/ 2 inch NPT pipe or approved equivalent. Connection to
the gas valve is at the right front corner of the generator.
5. Provide 115 VAC, 60 HZ, 1 PH, 15 AMP electrical service. Observe local codes and/or The National
Electrical Code in accordance with ANSI/NFPA 70 — latest edition. AN ELECTRICAL GROUND IS
REQUIRED. The electrical schematic is located on the inside of the cabinet door.
6. Installation must conform with the American National Standard Z223.1 — latest edition and the National Fuel
Gas Code. The unit should be installed in an adequately ventilated room with a provision for adequate air
supply to the unit. The best ventilation will utilize a vent hood and exhaust fan. DO NOT obstruct the flue or
vent duct after installation.
7. Adequate space for proper servicing and operation is required. DO NOT block any air intake spacing to the
combustion chamber or obstruct the air flow.
8. After the steam generator has been connected to the gas supply, all gas line joints must be checked for
leaks. NO FLAME SHOULD BE USED WHEN CHECKING FOR LEAKS. A thick soap solution or other
suitable leak detector should be employed.
9. The appliance and its individual shutoff valve must be disconnected from the gas supply piping system
during any pressure testing of the system at test pressures in excess of 1/2 psig (3.48 kPa). The appliance
must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any
pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psig (3.48 kPa).
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