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Appendix D—HeatShift™System
Overview (applies to LDK7)
NOTE Discharge opening must be located in the
same room as fireplace when using LDK7.
Min. 2-1/2" opening required at ceiling
Ceiling
Flexible or rigid,
5" diameter
UL-181, Class 1
Air Duct (4)
(use LDK6 kit
or equivalent)
Min. 1"
clearance to
combustibles
around pipe
8-1/2"
14-1/2"
9-3/8"
79
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