Section 2 – Installation
IMPACT-36 plus II Recreational Vehicle Generator
◆ 2.3.2 COOLING AIR INLET OPENINGS | Figure 2.11 — Suspended Mount Inlet Door |
Provide three air inlet openings, whether the genera- tor is housed in a conventional compartment or not. Two of the openings should be 10 square inches and located as shown in Figure 2.10. The third opening should provide for a minimum of 40 square inches unrestricted and be located lower on the compart- ment door.
NOTE:
Screening, louvers, or expanded metal that cover air openings restrict air flow that must be com- pensated for by making the actual air opening pro- portionately larger. See “Compensating for Restrictions.”
For conventional compartment mounted units, the air inlet is generally provided in the compartment door.
Figure 2.10 — Air Inlet in Compartment Door
•Using ductwork (Figure 2.12). The installer must be sure air is available to the top of the generator since air inlets are located at the top.
Figure 2.12 — Air Inlet Using Ductwork
10 Square Inches
(Optional Openings)
40 Square Inches
(Minimum Opening)
• By providing an opening in the vehicle skirt and space above the generator for cooling air flow (Figure 2.13). Recommended clearance above the top of the generator is at least 2 inches.
Figure 2.13 — Air Inlet in Vehicle Skirt
IMPORTANT: IF PLANNING TO INSTALL THE GEN- ERATOR IN A COMPARTMENT, BE SURE TO LEAVE AT LEAST ONE INCH (2” recommended) OF CLEAR-
ANCE BETWEEN THE GENERATOR AND COM- PARTMENT WALLS AND CEILING. INCLUDE 26 GAUGE GALVANIZED STEEL LINING AND SOUND INSULATION WHEN MEASURING FOR THIS 1 INCH (2” recommended) CLEARANCE.
When the unit is installed on a suspended mounting system, one of several different methods of supplying air flow may be used as follows:
• Provide a door in the vehicle skirt having an air inlet opening (Figure 2.11).
24 Generac® Power Systems, Inc.