This guide covers the critical design parameters that determine whether your generator installation will pass inspection and perform reliably under emergency conditions: ventilation sizing, exhaust system design, clearance distances, noise mitigation, fuel storage limits . This guide covers the critical design parameters that determine whether your generator installation will pass inspection and perform reliably under emergency conditions: ventilation sizing, exhaust system design, clearance distances, noise mitigation, fuel storage limits . Complete guide to NFPA 37 requirements for commercial generator installations including room ventilation, exhaust systems, clearance distances, noise compliance, and permitting. A poorly designed generator room does more than create maintenance headaches. However,when the oil volume exceeds 100L,it should be placed in the special oil storage room with a fi re erably located in the first floo lution produced by the unit during operation. Factor in any acoustic enclosures, vibration isolators, or sub-base fuel tanks. Minimum clearance requirements:. Thus, compliance with NFPA 110's exhaust system requirements helps ensure that exhaust gases are appropriately vented and that the generator remains safe and efficient to operate. Ventilation is typically done through the use of an air inlet, air outlet/exhaust fan, and/or other ventilation openings. When ever possible, face the generator.