Kohler 20--2800 kW manual Air-Vac Cooling System

4.4 Air-VacCooling System

The air flow direction with the Air-Vac system is the opposite of the conventional forced air cooling system. Use the Air-Vac system in confined areas since it includes a blower scroll which easily connects to the ductwork. For duct dimensions refer to the dimensional drawing for your model. With Air-Vac cooling, air is drawn across the generator end of the unit, into the

finned areas, and then out into the scroll located at the front of the engine.The heated air is forced through ductwork to the outside of the building. See Figure 4-6.

Note: Order Air-Vac cooling systems factory installed since major components of the engine are affected making it difficult and uneconomical to install at a later time.

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			TP-5700-4
1.	Air-Vac scroll	4.	Register type cover suitable for smaller sets
2.	Air inlet opening	5.	Flexible section
3.	Ductwork

Figure 4-6 Air-Vac Cooling System

14 Section 4 Air Requirements TP-5700 7/93