Heat & Glo MISSION-BAY Owner's Manual page 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).
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 page 18).
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.
Page 20
MASONRY
CHIMNEY
WALL THIMBLE
COVER
CUT AND BEND FLASHING AS
NEEDED TO FIT CHIMNEY
Heat & Glo · Mission Bay · 250-7512F
WARNING
Fire Risk.
Explosion Risk.
• Do not let the flex liner sag below the level at
which it will connect to the appliance or connector.
This could allow hot gas to become trapped and
potentially become a fire hazard. The flex liner path
should always be sloped up toward the termination
cap.
Step 7.
If additional lengths of flex liner are needed to span the
chimney height, use a flex coupler to connect the pieces of
flex liner together. Connect the flex to the coupler by using
four sheet metal screws for each side (Figure 5.27).
Figure 5.27
Step 8.
Secure the top adapter to the flashing. Use three sheet
metal screws through the side of the top adapter into the
flange on the flashing (Figure 5.28, on the next page). Twist
lock the high wind termination cap on to the top adapter.
FLEX LINER
FLEX COUPLER
SHEET METAL
SCREWS
July 12, 2006