Existing Masonry Chimney - Quadra-Fire HUDBAY-FS Installation Manual

4. Existing Masonry Chimney

TOP ADAPTOR
RETRO CONNECTOR
90 DEGREE
ELBOW
DIRECT VENT
PIPE
Figure 5.23
!
Ensure that existing chimney is functionally sound and
clean.
• Have inspection done by qualified chimney sweep or
professional installer BEFORE converting to direct vent
appliance.
Step 1 - Before cutting any holes, assemble the desired
sections of direct vent pipe to determine the center of the
masonry penetration.
Step 2 - Once the center point of the penetration has
been determined, cut a 6 in. (152mm) diameter hole in the
masonry. If the hole is too large, the retro connector might
not mount properly; if the hole is too small, the appliance
might starve for intake air. If there is a frame wall in front of
the masonry wall, cut and frame a 10 in. (254mm) square
opening in the wall (centered around the 6 in. (152mm)
masonry opening). If there is sheet rock only (no studs)
in front of the masonry the 10 in. (254mm) opening is
still needed, but does not need to be framed. If the hole
is framed a wall thimble is required. This allows the retro
connector to mount directly on the masonry and provide the
correct clearances to combustibles, Figure 5.25.
21
TERMINATION
CAP
FLASHING
4 in. (102mm)
FLEX LINER
CAUTION
Quadra-Fire • Hudson Bay Installation Manual_R26 • 01/20
STUDWALL
10 in. x 10 in. (254mm x 254mm)
FRAMED OPENING IN WALL
RETRO CONNECTOR
FOUR MASONRY BOLTS
(NOT INCLUDED)
Figure 5.25
Step 3 - Secure the flashing to the top of the masonry
chimney using a bead of non-hardening sealant-adhesive.
If the flashing is larger than the top of the chimney, cut and
fold flashing as needed to fit chimney, Figure 5.26.
CUT AND BEND FLASHING AS
NEEDED TO FIT CHIMNEY
SEALANT-ADHESIVE
Figure 5.26
Step 4 - To determine the length of flex needed, measure
from 3 in. (76mm) above the top of the flashing down to the
level of the opening. Add the distance from the center of the
chimney out through the wall. Cut a piece of 4 in. (102mm)
flex to this length (extended to its nominal length). Be sure to
leave 2-3 in. (51-76mm) of flex above the existing chimney
to allow for connection to the termination kit.
Step 5 - Connect the flex liner to the top adapter using
three sheet metal screws, Figure 5.21.
Step 6 - Feed the flex liner through the flashing into the
chimney. Carefully feed the flex liner down the chimney to
the bottom and out the opening in the masonry wall, forming
an angle to line up the flex liner with the vent opening on the
appliance.
MASONRY
CHIMNEY
WALL THIMBLE
COVER
3-90-7003999