Vermont Castings Intrepid INDVRCB Homeowner's Installation And Operating Manual page 26

Intrepid® Direct Vent - Rear Vent Gas Heater
Figure 49
Existing Ceiling
Support Box
ST960
center the retro connector and attach it to the support
box or decorative sleeve for double wall solid packed
pipe, with the sheet metal screws furnished. The holes
in the retro connector are pre-punched. (Fig. 49)
7. The connection between the appliance and the retro
connector may be completed with sections of black
direct vent pipe, together with an adjustable length.
Installation Instructions for Converting a Ma-
sonry Chimney
IMPORTANT: The existing masonry flue opening need to
have an area of at least 35 square inches (226 square mm)
to insure proper intake/exhaust flow.
1. Before cutting any holes, assemble the desired sections
of black direct vent pipe to determine the center of the
masonry penetration.
2. Once the center point of the penetration has been deter-
mined, cut a 6" (152 mm) diameter hole in the masonry.
Be careful, if the hole is too large, the retro connector
might not mount properly. If the hole is too small, then
the appliance might starve for intake air. If there is a
frame wall in front of the masonry wall, cut and frame a
10" (254 mm) clear square opening in the wall (centered
around the 6" (152 mm) masonry opening). If there is
sheet rock only (no studs) in front of the masonry, the
10" (254 mm) clear opening is still needed, but does not
need to be framed. This allows the retro connector to
mount directly on the masonry and provide clearance
to the combustibles. (Fig. 54)
3. Secure the flashing (705C) to the top of the masonry
chimney using a bead of non-hardening sealant-adhe-
sive. If the flashing is larger than the top of the chimney,
then cut and fold flashing as needed to fit chimney. (Fig.
50)
4. To determine the length of flex required, measure from 3"
(76 mm) above the top of the flashing down to the level
of the opening. Add to this measurement the distance
from the center of the chimney to out through the wall.
Cut a piece of 4" (102 mm) flex to this length (the flex
should already be extended to its nominal length).
5. Connect the 4" flex liner to the cap adapter (985K) using
three sheet metal screws. (Fig. 46)
6. Feed the 4" flex liner through the flashing into the chimney.
26
Sheet Metal
Screws (3)
Sheet Metal
Screws (3)
Cut & Bend
Flashing as
Figure 50
Needed to Fit
Chimney
Sealant -
Adhesive
ST962
tor to the masonry wall
using masonry bolts.
Re-drill larger holes on
connector as needed.
Be careful to insure that
the connector is centered
in the opening and the
mounting holes line up
with the masonry wall.
9. Slide the wall thimble
cover (940) over the retro
connector and secure
the with masonry bolts
as shown in Figure 53. If
you have a framed wall in
front of the masonry, use
wood screws to mount
the wall thimble cover to
the framed wall, over the retro connector and the 10" (254
m m ) s q u a r e
6" Diameter
framed open-
Opening in
ing as shown
Masonry Wall
in Figure 54. If
Retro
needed, add a
Connector
section of direct
vent pipe to the
retro connec-
tor in order to
extend through
the opening in
the wall thimble
cover.
10. The connection
between the ap-
pliance and the retro connector may be completed with
Continue to feed the liner
out through the opening
in the masonry wall.
7. Secure the cap adapter
to the flashing. Use three
(3) sheet metal screws
through the side of the
adapter into the flange on
the flashing as shown in
Figure 51. Twist-lock the
termination cap (980,991,
930) on to the cap adapt-
er.
8. Attach the flex to
the retro connector. Use
three sheet metal screws
to attach the flex liner to
the connector. (Fig. 52)
Mount the retro connec-
High Wind
Termination Cap
Standard
Termination
Cap
Top Adapter
Figure 51
Sheet
Metal
Screws (3)
Flashing
ST963
Figure 52
Masonry Bolts (3)
(Not included)
20012761
ST964