12
INSTALLATION (Continued)
Clearances to Heat-Sensitive Materials (continued)
The roof of the enclosure must have a minimum of 400,000 mm² for example : 825 mm (X) • 500
mm (Y) = 412 500 mm2) of venting to the ceiling cavity and a minimum of 50 mm clearance
around the flue system and hot air ducts (the 50 mm clearance can be included in the 400,000
mm² of venting).
CAUTION
BEFORE CLOSING THE WALLS, MAKE SURE THAT THE FLUE DAMPER AND THE
DOOR MECHANISM WORKS PROPERLY. SEE SECTIONS Chimney Damper AND
Access Door for Counterweight.
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