New Buck Corporation 74 Manual page 20

Connectors may pass through walls or partitions constructed of combustible material if the
connector is:
(a) Either listed for wall pass-through or is routed through a device listed for wall pass-
through and is installed in accordance with the conditions of the listing.
(b) Selected or fabricated in accordance with the conditions and clearances as stated in
the NFPA-211 Code. Any unexposed metal that is used as part of a wall pass-through
system and is exposed to flue gases shall be constructed of stainless steel or other
equivalent material that will resist corrosion, softening, or cracking from flue gases at
temperatures up to 1800
In addition, a connector to a masonry chimney shall extend through the wall to the inner
face or liner but not beyond, and shall be firmly cemented to masonry.
EXCEPTION: A thimble may be used to facilitate removal of the chimney connector for
cleaning, in which case the thimble shall be permanently cemented in place
with high-temperature cement.
2. Once the through-the-wall thimble codes are met, simply connect the chimney collar to
the wall pass-through
connector pipe as follows:
(a) Maintain 1/4" rise per foot (horizontal length) from the appliance to the chimney.
(b) Connect each section so the crimped end faces downward.
(c) Secure each section to each other using at least three (3) sheet metal screws or rivets.
(d) Use three (3) sheet metal screws to fasten pipe to connector collar on heater.
D. Ceiling Exit-Close Clearance
1. Suspend a plumb bob from the ceiling above the unit so that the weight is hanging in the
center of the flue exit (A small weight on a string will serve as a plumb bob). Mark the
ceiling where the string is suspended to locate the center of the chimney hole.
2. After locating the center of the hole, install the ceiling support box, chimney flashing
and rain cap.
3. Install Double Wall Connector and close clearance chimney systems per manufacturer's
written instructions. See stove manufacturer's list of tested pipes in this manual.
(See Page 17.)
o
F.
connector using #24 ga.
Page 16
minimum, blue or black steel