Multiquip MQP20IZ, MQP40IZ Installation Overview, Cold Climates and Derating Factors, Location

INSTALLATION OVERVIEW

Cold Climates and Derating Factors

Extreme temperature and high elevation effect the efficiency of the engine-generator set. Always take into account derating factors of climate and elevation when sizing a generator set.

Use Premium No.1-D Grade diesel fuel when the ambient temperature is below freezing. Fuel heating may be required to prevent fuel filters from clogging when temperatures fall below the cloud point of the fuel at approximately 20°F (-6°C) for No. 2-D and -15°F (-26°C) for No. 1-D.

Location

Location of the generator set will determine the cost effectiveness of an installation. The generator set can be located inside a building or outside the building with a shelter or weather-protective housing. The location will help determine the layout of the fuel tanks, louvers, ventilation ducts, accessories, etc. Consider the following when deciding where to locate the generator set:

„Safety considerations

„Noise. See pages 27 thru 32 for environmental considerations.

„Ambient temperature

„Mounting

„Fuel, exhaust, ventilation, and cooling systems

„Location of the distribution switchboard and transfer switch

„Branch circuits for coolant heaters, battery charger, etc.

„Security from flooding, fire, icing, and vandalism

„Containment of accidentally spilled or leaked fuel or engine fluids

Outdoor Locations

„Airborne noise. Locate and/or route engine exhaust piping away from nearby windows & doorways.

„Outdoor enclosures. Give consideration to type of outdoor housing, including weather-protective and/or sound attenuated types.

„Security. Consider use of security fences and site barriers.

„Property line distances. Ensure before proceeding with final installation plans you are aware of your property lines.

„Engine exhaust. Engine exhaust must be routed away from building intake vents, windows, doorways and other openings.

„Mounting - Ensure generator is located (mounted) over non-combustible materials and is situated in such a manner as to prevent combustible materials from accumulating under the generator.

Indoor Locations

„Dedication of room for the generator sets only. For emergency power systems, codes may require the generator room be dedicated for that purpose only. Also consider the effect of the large ventilation air flows would have on other equipment in the same room.

„Fire rating of the room construction. Most codes specify a 1 or 2 hour rating. Check with the local fire authority for code guidelines.

„Working space. Working space around electrical equipment is usually specified by code. There should be at least four feet (1200 mm) of clearance around each generator set. The generator should be accessible for service without removing the set or any accessories.

„Type of cooling system. A factory-mounted radiator is recommended.

„Ventilation. Large volumes of air flow are involved. Room ventilation fans might be required for a heat exchanger or remote radiator configurations.

„Engine exhaust. The engine exhaust outlet should be as high as practical on the downwind side of the building and away from vents and building openings.

„Fuel storage and piping. Codes may restrict fuel storage inside buildings. It is important to consider a safe method for refueling the fuel tank. Check with the local fire authority for code guidelines.

PAGE 16 — INDUSTRIAL GENERATOR SETS — APPLICATION & INSTALLATION MANUAL — REV. #4 (09/07/07)