Minimum Inside Vertical Clearances; Class A Chimney Retrofit - Napoleon NPS45 Installation And Operating Instructions Manual

4.5.3 MINIMUM INSIDE VERTICAL CLEARANCES

4.5.4 CLASS A CHIMNEY RETROFIT

Vertical Cap
Storm Collar
Ceiling Support
Floor Protection
Vertical Cap
Storm Collar
Class A Chimney
Ceiling Support
Floor Protection
Roof Flashing
Vent must maintain 3"
clearance to combus-
tibles.
3"
2"
Outside air (Recommended)
(Installation showing inlet of out-
side air in ventilated crawl space)
Roof Flashing
Vent must maintain
3" clearance to
combustibles.
3"
2"
Outside air
(Recommended)
(Installation show-
ing inlet of outside
air in ventilated
crawl space)
21
EN
W415-1472 / 04.21.15