Focus Heterofocus 1400, Руководство по проектированию, установке и эксплуатации

Страница: 7 / 24

Page 7 of 24
Important: this fresh air intake is compulsory when operating venting appliances
such as kitchen hoods, permanent air extractors or any appliances creating an
air depression in the habitation. Fresh air intake must remain unrestricted while
appliance is in use to prevent room air starvation, which can cause smoke
spillage and an inability to maintain a fire. A lack of air intake may alarm smoke
detectors. Duct maximum length : 30 feet.
Guidance on how to seal at the penetration of the building envelope :
Installation of the combustion air inlet system will require a 6” diameter
penetration through the wall and then insert the passive air vent with pipe
extension through this opening. Take note that proper caulking is to be used
between the vent and exterior wall to insure no air leaks in or out of building
envelope. For in depth detail refer to your local building code having jurisdiction.
For vertical external façade building termination, we recommend Deflect-O fresh
air intake galvanized hood and pipe with screen ref. GFAI6 (see image
hereunder and technical specs at the end of this manual).
Internal termination must finish with a standard ventilation grill.