New Buck Corporation 74 User Manual

Page 17

3. Measure up so there will be at least 1/4" rise per foot of horizontal connector pipe,

maintaining clearances to the ceiling as noted in (Figure 6 Page 14.) This will give you the
center of the hole for the chimney penetration.

4. After locating the center of the penetration, install the tee-box and chimney as per the

chimney manufacturer's specifications.

5. Connect the chimney connector to the tee-box using #24 ga. minimum blue or black steel

connector pipe. DO NOT use galvanized pipe. Connect each section so the crimped end
faces downward, and secure each section to each other using three (3) sheet metal screws or
rivets. (See Figure 7.)

C. Wall Exit Into Masonry Flue (Using Single Wall Pipe.)

1. Before connecting these units to a masonry chimney, determine that the masonry flue

pass-through connector thimble meets the NFPA-211 Code and local building codes
and is a minimum of 18" from the ceiling. If the connector thimble does not meet
these codes, the pass-through connector must be modified.

Figure 7

CEILING CENTER LINE
OF ELBOW

SECURE WITH (3)
SHEET METAL SCREWS

1/4” RISE PER FT’

MASONRY CHIMNEY

FLOOR PROTECTOR
See Figure 9. Page 19.

CLEAN OUT
DOOR

MASONRY
FLUE
LINERS

MARK PLUM LINE

SEAL AROUND PIPE TO
THIMBLE OR PASS-
THROUGH CONNECTOR
WITH NON-COMBUSTIBLE
MATERIAL

WALL