Jack BIG BJ90, Owner'S Manual

Page: 32 / 56

BAROMETRIC DRAFT REGULATOR
Insert the draft regulator in the open end of the stub.
Revolve it so it is right-side-up and imprinting on
regulator reads normally. See Fig. 9
To function properly, the draft regulator must be
mounted level and plumb in the tee joint stub.
Using a carpenter’s spirit level placed vertically
across the ring, position the draft regulator so it is
plumb and does not lean forward or backward.
(See Fig. 10) Also, place the spirit level horizontally
across the front, in line with the pivot pins and posi-
tion the regulator so it sets true (level). (See Fig.
11) Tighten locking screw to hold draft regulator in
place.
FIG. 9
FIG. 10
FIG. 11
Installation
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