Dunkirk EXCELSIOR EXB4075 Installation, Operation & Maintenance Manual page 37

Figure 31 - Proper Draft Regulator Locations
Figure 32 - Typical Chimney Locations
Must be at least
4 inches thick -
and be tight.
Must slope up
at least 1/4
inch per foot of
horizontal run
14 - CHIMNEY AND VENTING CONNECTIONS
Minimum height must be
at least 3 Ft higher than
highest part of passage
through roof. Must be
at least 2 FT higher
than any neighboring
object within 10 Ft. Must
have unobstructed top
opening.
Tight, smooth,
correctly sized
Sealed in
thimble
Tight clean-out
door
Figure 33 - Pressure Tapping for Checking Draft
Draft Regulator
Vane
Crimped
Balanced
End
Weight
37
1/4"NPT TEST PORT
FOR OVER-FIRE
MEASUREMENT