SECTION 16622

PACKAGED ENGINE GENERATOR SYSTEMS

PART 1 GENERAL

SECTION INCLUDES

Packaged engine generator system.

Remote radiator.

Heat exchanger.

Exhaust silencer and fittings.

Fuel fittings and day tank.

Remote control panel.

Battery and charger.

Weatherproof enclosure.

PRODUCTS FURNISHED BUT NOT INSTALLED UNDER THIS SECTION

Section 15450 - Plumbing Equipment: Installation of day tank.

Section 15515 - Hydronic Piping: Installation of exhaust silencer and fittings.

Section 15755 - Heat Exchangers: Installation of [remote radiator.] [heat exchanger.]

RELATED SECTIONS

Section 15242 - Vibration Isolation.

Section [_____ - __________:] Mechanical seismic controls.

Section 15260 - Piping Insulation.

Section 15410 - Plumbing Piping: Fuel system piping.

Section 15450 - Plumbing Equipment: Underground storage tanks.

Section 15510 - Hydronic Piping: Cooling water system and exhaust piping.

Section 15540 - HVAC Pumps.

Section 15890 - Ductwork.

Section 15910 - Ductwork Accessories.

Section 15936 - Air Outlets and Inlets.

Section 15952 - Controls and Instrumentation.

Section [_____ - __________:] Automatic transfer switches.

REFERENCES

ANSI/NEMA 250 - Enclosures for Electrical Equipment (1000 Volts Maximum).

ANSI/NEMA MG 1 - Motors and Generators.

ANSI/NFPA 70 - National Electrical Code.

ANSI/NFPA 99 - Health Care Facilities.

ANSI/NEMA AB 1 - Molded Case Circuit Breakers.

SYSTEM DESCRIPTION

Engine generator system to provide source of [emergency] [and] [standby] power.

System Capacity: [_____] kW, [_____] kVA at elevation of [_____] feet (_____] m) above sea level, and ambient temperature between [_____] and [_____] degrees F ([_____] and [_____] degrees C); [continuous] [standby] rating using [engine-mounted radiator.] [remote radiator.] [city-water cooling.] [engine-mounted heat exchanger.]

Operation: In accordance with ANSI/NFPA 99.

SUBMITTALS

Submit shop drawings and product data under provisions of Section [01300.] [01340.]

Submit shop drawings showing plan and elevation views with overall and interconnection point dimensions, fuel consumption rate curves at various loads, ventilation and combustion air requirements, and electrical diagrams including schematic and interconnection diagrams.

Submit product data showing dimensions, weights, ratings, interconnection points, and internal wiring diagrams for engine, generator, control panel, battery, battery rack, battery charger, exhaust silencer, vibration isolators, day tank, remote radiator, and remote annunciator.

Submit manufacturer's installation instructions under provisions of Section [01300.] [01340.]

PROJECT RECORD DOCUMENTS

Submit record documents under provisions of Section

[01700.] [01720.]

Accurately record location of engine generator and mechanical and electrical connections.

OPERATION AND MAINTENANCE DATA

Submit operation and maintenance data under provisions of Section [01700.] [01730.]

Include instructions for normal operation, routine maintenance requirements, service manuals for engine and day tank, oil sampling and analysis for engine wear, and emergency maintenance procedures.

QUALIFICATIONS

Manufacturer: Company specializing in packaged engine generator system with minimum [three] [_____] years [documented] experience.

Supplier: [Authorized] [Franchised] distributor of engine generator manufacturer with service facilities within [50] [_____] miles ([80] [_____] km) of project site.

DELIVERY, STORAGE, AND HANDLING

Deliver products to site under provisions of Section [01600.] [01610.]

Store and protect products under provisions of Section [01600.] [01620.]

Accept packaged engine generator set and accessories on site in crates and verify damage.

Protect equipment from dirt and moisture by securely wrapping in heavy plastic.

WARRANTY

Provide [two] [five] year warranty under provisions of Section [01700.] [01740.]

MAINTENANCE SERVICE

Furnish service and maintenance of packaged engine generator system for [one] [_____] years from Date of Substantial Completion.

EXTRA MATERIALS

Submit maintenance materials under provisions of Section [01700.] [01750.]

Furnish one set of tools required for preventative maintenance of the engine generator system. Package tools in adequately sized metal tool box.

Provide [two] [_____] additional sets of each fuel, oil, and air filter element required for the engine generator system.

PART 2 PRODUCTS

MANUFACTURERS

[____________________________] Model [__________.]

[____________________________] Model [__________.]

[____________________________] Model [__________.]

Substitutions: Under provisions of Section [01600.] [01630.]

ENGINE

Type: [Water-cooled] [Air-cooled] inline or V-type, [four stroke cycle,] [two stroke cycle,] [compression ignition Diesel] [electric ignition] internal combustion engine.

Rating: Sufficient to operate at 10 percent overload for one hour at specified elevation and ambient limits.

Fuel System: Appropriate for use of [No. 2 fuel oil.] [gasoline.] [propane.] [natural gas.] [propane and natural gas with automatic changeover dual fuel system.]

Engine Speed: [1200] [1800] [_____] rpm.

Governor: Isochronous type to maintain engine speed within 0.5 percent, steady state, and 5 percent, no load to full load, with recovery to steady state within 2 seconds following sudden load changes. [Equip governor with means for manual operation and adjustment.]

Safety Devices: Engine shutdown on high water temperature, low oil pressure, overspeed, and engine overcrank. Limits as selected by manufacturer.

Engine Starting: DC starting system with positive engagement, number and voltage of starter motors in accordance with manufacturer's instructions. Include remote starting control circuit, with MANUAL-OFF-REMOTE selector switch on engine-generator control panel.

Engine Jacket Heater: Thermal circulation type water heater with integral thermostatic control, sized to maintain engine jacket water at 90 degrees F (32 degrees C), and suitable for operation on [120] [_____] volts AC.

Radiator: Radiator using glycol coolant, with blower type fan, sized to maintain safe engine temperature in ambient temperature of 110 degrees F (43 degrees C). Radiator Air Flow Restriction: 0.5 inches of water (9.34 mm of mercury), maximum.

Engine Accessories: Fuel filter, lube oil filter, intake air filter, lube oil cooler, fuel transfer pump, fuel priming pump, gear-driven water pump. Include fuel pressure gage, water temperature gage, and lube oil pressure gage on engine-generator control panel.

Mounting: Provide unit with suitable spring-type vibration isolators and mount on structural steel base.

GENERATOR

Generator: ANSI/NEMA MG 1; [single] [three] phase, [four] [six] pole, reconnectible brushless synchronous generator with brushless exciter.

Rating: [_____] kW, [_____] kVA, at [0.8] [_____] power factor, [240/120] [208Y/120] [480Y/277] [__________] volts, [60] [_____] Hz at [1200] [1800] [_____] rpm.

Insulation: ANSI/NEMA MG 1, Class F.

Temperature Rise: [105 degrees C continuous.] [130 degrees C standby.]

Enclosure: ANSI/NEMA MG 1; open drip proof.

Voltage Regulation: Include generator-mounted volts per Hertz exciter-regulator to match engine and generator characteristics, with voltage regulation +/- one percent from no load to full load. Include manual controls to adjust voltage drop +/- 5 percent voltage level, and voltage gain.

ACCESSORIES

Remote Radiator: [Horizontal] [Vertical] discharge remote radiator, selected and sized by engine generator manufacturer to match engine cooling capacity, and suitable for operation at elevation of [_____] feet ([_____] m). Fan Motor Voltage: [480] [_____] volts, [single] [three] phase.

Heat Exchanger: Engine or base-mounted heat exchanger and expansion tank of type and capacity recommended by engine manufacturer. Include solenoid shut-off valve for installation on the cooling water inlet under Section 15755.

Day Tank: [25] [100] [_____] gallon ([95] [378] [_____] L) day tank unit with dual integral pumps and level control. Include flexible fuel line connections, fuel gage, check valve, high fuel level alarm contact, and indicating light. Operate pump with motor rated [120] [_____] volts AC.

Exhaust Silencer: [Residential] [Critical] type silencer, with muffler companion flanges and flexible stainless steel exhaust fitting, suitable for [horizontal] [vertical] orientation, sized in accordance with engine manufacturer's instructions.

Batteries: Heavy duty, diesel starting type lead-acid storage batteries, [170] [_____] ampere-hours minimum capacity. Match battery voltage to starting system. Include necessary cables and clamps.

Battery Tray: Plastic coated metal or wooden tray treated for electrolyte resistance, constructed to contain spillage of electrolyte.

Battery Charger: Current limiting type designed to float at 2.17 volts per cell and equalize at 2.33 volts per cell. Include overload protection, full wave rectifier, DC voltmeter and ammeter, and 120 volts AC fused input. Provide wall-mounted enclosure to meet ANSI/NEMA 250, Type 1 requirements.

Line Circuit Breaker: NEMA AB 1 molded case circuit breaker on generator output with integral thermal and instantaneous magnetic trip in each pole; [number and rating as indicated.] [sized in accordance with ANSI/NFPA 70.] Include battery-voltage operated shunt trip, connection to open circuit breaker on engine failure. Mount unit in enclosure to meet ANSI/NEMA 250, Type 1 requirements.

Engine-Generator Control Panel: ANSI/NEMA 250, Type 1 [generator mounted] [free-standing] [remote wall mounted] control panel enclosure with engine and generator controls and indicators. Include provision for padlock and the following equipment and features:

Frequency Meter: 45-65 Hz range, 3-1/2 inch (89 mm) dial.

AC Output Voltmeter: 3-1/2 inch (89 mm) dial, 2 percent accuracy, with phase selector switch.

AC Output Ammeter: 3-1/2 inch (89 mm) dial, 2 percent accuracy, with phase selector switch.

Output voltage adjustment.

Push-to-test indicator lamps, one each for low oil pressure, high water temperature, overspeed, and overcrank.

Engine start/stop selector switch.

Engine running time meter.

Oil pressure gage.

Water temperature gage.

Auxiliary Relay: 3PDT, operates when engine runs, with contact terminals prewired to terminal strip.

Remote Alarm Contacts: Pre-wire SPCT contacts to terminal strip for remote alarm functions required by ANSI/NFPA 99.

Weather-protective Housing: Reinforced steel housing allowing access to control panel and service points, with lockable doors and panels. Include fixed louvers, [[_____] gallon ([_____]L) fuel tank,] battery rack, and silencer.

Remote Engine Annunciator Panel: [ANSI/NFPA 99;] [include engine run and low fuel indicator lights and remote start/stop switch;] [surface] [flush] mounted panel with [brushed stainless steel] [[_____] color painted] finish.

PART 3 EXECUTION

EXAMINATION

Verify that surfaces are ready to receive work and field dimensions are as shown on Drawings.

Verify that required utilities are available in proper location and ready for use.

Beginning of installation means installer accepts existing conditions.

INSTALLATION

Install in accordance with manufacturer's instructions.

FIELD QUALITY CONTROL

Field [inspection and] testing will be performed under provisions of Section [01400.] [01410.]

Provide full load test utilizing portable test bank, if required, for four hours minimum. Simulate power failure including operation of transfer switch, automatic starting cycle, and automatic shutdown, and return to normal.

During test, record the following at 20 minute intervals:

Kilowatts.

Amperes.

Voltage.

Coolant temperature.

Room temperature.

Frequency.

Oil pressure.

Test alarm and shutdown circuits by simulating conditions.

MANUFACTURER'S FIELD SERVICES

Prepare, start, test, and adjust systems under provisions of Section [01600.] [01650.]

ADJUSTING

Adjust work under provisions of Section [01650.] [01660.]

Adjust generator output voltage and engine speed.

CLEANING

Clean work under provisions of Section [01700.] [01710.]

Clean engine and generator surfaces.	Replace oil and fuel filters.

DEMONSTRATION

Provide systems demonstration under provisions of Section [01600.] [01670.]

Describe loads connected to [emergency] [and] [standby] system and restrictions for future load additions.

Simulate power outage by interrupting normal source, and demonstrate that system operates to provide [emergency] [and] [standby] power.

END OF SECTION