Section 2 – Installation
IMPACT-36 plus II Recreational Vehicle Generator
◆2.2.1 COMPARTMENT SIZE
Plan the compartment size carefully. Provide a mini- mum of at least 1 inch (2” recommended) of clear- ance between the generator and compartment walls and 1 inch (2” recommended) of clearance between the generator and the ceiling AFTER the compart- ment has been lined with metal, and AFTER sound insulation has been installed (Figure 2.5).
NOTE:
Refer to the “Major Features and Dimensions” drawing in the back of this manual.
Figure 2.5 — Provide Clearance Around
Generator
•Line the entire compartment interior with 26 gauge galvanized steel as described above.
•Line the exterior (underside) of the compartment floor with 26 gauge galvanized steel.
•Vapor seal all compartment seams and joints, to prevent poisonous, flammable or explosive vapors from entering the vehicle interior. Refer to the sealant information as noted previously.
NOTE:
Silicone rubber base sealant is an acceptable caulking material. Pressing putty tape onto com- partment joints and seams is NOT acceptable.
•After the compartment has been metal lined and vapor sealed, line the compartment interior walls and ceiling with an approved,
◆2.2.2 COMPARTMENT CONSTRUCTION
•The generator compartment should be constructed of 1/2 inch thick plywood. Make the compartment floor a double thickness of 1/2 inch plywood with the grain of the wood at cross section for added strength (Figure 2.6).
Figure 2.6 — Typical Compartment Construction
DANGER
Do not install sound insulation or any absorbent material on the compartment floor interior. Such materials will become soaked with combustible or explosive vapors and liq- uids and will become a fire hazard.
•Openings in compartment walls for passage of elec- trical conduit, conductors, hoses, cables, etc., must be made vapor tight with suitable caulking material.
•Flexible conduit must be sealed internally at the end where it terminates inside a compartment's electrical junction box.
NOTE:
The preceding is required because flexible con- duit, due to its unique construction, is not vapor- tight along its entire length.
DANGER
Do not install any flammable material directly above or around the compartment. Heat, transferred through the compartment struc- ture, may be sufficient to ignite, char or dis- color seat cushions, fiberboard and other flammable materials. Use approved
Generac® Power Systems, Inc. 21