BR342 Ducted Installation Instructions
Air Distribution Duct Sizing & Design
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These items must be determined in conjunction with the Air Distribution Duct System Sizing & Design requirements. See
"Table A - Air Distribution Duct Sizing & Design" on page 6.
12
Wiring Requirements
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Route a copper, with ground, 240VAC supply wire from the time delay fuse or circuit breaker box to the roof opening.
The proper size wire can be determined from chart on page 6.
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This supply wire must be located in the front portion of the roof opening.
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The power MUST be on an appropriately sized separate time delay fuse or circuit breaker. The proper size protection
can be determined from data table on page 6.
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Make sure that at least 381mm of supply wire extends into the roof opening. This insures an easy connection at the
junction box.
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Protect the wire where it passed into the opening with approved method.
NOTE
If vent fan was removed, the existing wire may be used provided it is of proper size, location, and correctly
fused.
