Heat & Glo MISSION-BAY Owner's Manual page 19

Step 4.
Pass the flex pipe down through the center of the chimney
system, and center the top adapter on the top of the chimney
pipe. Drill four 1/8 in. (3mm) diameter holes through the
top adapter, and into the chimney top. Ensure that you are
drilling into the metal on the chimney. Twist lock the high
wind termination cap onto the top adapter (Figures 5.22
and 5.23).
Figure 5.22
DRILL FOUR 1/8 in.
(3mm) DIAMETER
HOLES
Figure 5.23
Step 5.
Pull the flex pipe down through the ceiling support box, until
it protrudes approximately 3 in. (76mm). Connect the flex
pipe to the retro connector, and attach with sheet metal
screws.
Step 6.
Push the flex pipe back up into the ceiling support box,
center the retro connector, and attach it to the support box
with sheet metal screws.
Step 7.
The connection between the appliance and the retro
connector may be completed with sections of direct vent
pipe.
July 12, 2006
4. Existing Masonry Chimney
HIGH WIND
TERMINATION
CAP
Ensure that existing chimney is functionally sound and clean.
SHEET METAL
• Have inspection done by qualified chimney sweep or
SCREWS
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 round support box/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, on the next page).
Heat & Glo · Mission Bay · 250-7512F
TOP ADAPTER
RETRO CONNECTOR
90 DEGREE ELBOW
DIRECT VENT PIPE
Figure 5.24
CAUTION
professional installer BEFORE converting to direct vent
appliance.
TERMINATION CAP
PART #SLK-991DA
FLASHING
4 in. (102mm)
FLEX LINER
Page 19