Zephyr Firenze ZFI-M90S Use, Care And Installation Manual page 9

WARNING FIRE HAZARD
NEVER exhaust air or terminate duct work into spaces between walls, crawl spaces, ceiling, attics or garages.
All exhaust must be ducted to the outside, unless using the recirculating option.
Use single wall rigid Metal ductwork only.
Fasten all connections with sheet metal screws and tape all joints w/ certifi ed Silver Tape or Duct Tape.
Some Ducting Options
(blower
housing)
ductless
recirculating
(blower
housing)
Roof Pitch w/
Flashing & Cap
Soffit or crawl space
side wall cap
w/ gravity damper
7
(blower
side wall cap
housing)
w/ gravity damper
(blower
housing)