XO S30S Manual De Utilización página 20

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/ certified Silver
Tape or Duct Tape.
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