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20
Regency U39 ULTIMATE Direct Vent Freestanding Gas Stove
Converting a Masonry Chimney
Important: The existing  masonry flue
opening needs to have an area of at least
a 36 sq. in. to insure proper intake/ex-
haust flow.
1) Before cutting any holes, assemble the
desired sections of black direct vent pipe to
determine the center of the masonry pen-
etration.
Diagram 6
2) Once the center point of the penetration has
been determined, cut a 6" (152mm) dia. hole
in the masonry. Be careful, if the hole is too
large, the Retro Connector might not mount
properly, and 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" (254mm) clear square
opening in the wall (centered around the 6"
(152mm) masonry opening). IF there is
sheet rock only (no studs) in front of the
masonry, the 10" (254mm) 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 clear-
ance to the combustibles. Diagram 11.
3) Secure the Flashing (Part # 705C) 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 chim-
ney, then cut and fold flashing as needed
to fit chimney. Diagram 7.
Diagram 7
4) To determine the length of flex required,
measure from 3" (76mm) above the top of
the Flashing down to the level of the open-
ing. Add to this measurement the distance
from the center of the chimney to out through
the wall. Cut a piece of 4" flex to this length
(the flex should already be extended to its
nominal length).
5) Connect the 4" flex liner to the Top Adaptor
(Part # 985K) using 3 sheet metal screws.
Diagram 2.
6) Feed the 4" flex liner through the Flashing
into the chimney. Continue to feed the liner
out through the opening in the masonry
wall.
7) Secure the Top Adaptor to the Flashing.
Use 3 sheet metal screws through the side
of the adaptor into the flange on the Flashing
(diagram 8). Twist lock the Termination Cap
(Part # 980 or 991) on to the Top Adaptor.
Diagram 8
8) Attach the flex to the Retro Connector. Use
3 sheet metal screws to attach the flex liner
to the Connector. Diagram 9. Mount the
Retro Connector to the masonry wall using
masonry bolts. Re-drill larger holes on con-
nector as needed. Be careful to insure that
the connector is centered in the opening
and the mounting holes line up with the
masonry wall.
INSTALLATION
Diagram 3
Diagram 4
Diagram 5
4) Pass the flex pipe down through the center
of the chimney system, and center the
adaptor on the top of the chimney pipe. Drill
four 1/8" diameter holes through the adap-
tor and into the chimney top. Insure that   you
are in fact, drilling into the metal on  the
chimney. Twist-lock the Termination Cap
(Part# 980 or 991) onto the Adaptor. (Dia-
gram 3 and 4).
5) Pull the flex pipe down through the ceiling
support box, until it protrudes approximate-
ly 3" (76mm). Connect the flex pipe to the
Retro Connector by slipping it into the
4-3/4" diameter sleeve on the top side of the
Connector. Use 3 sheet metal screws to
assemble these two parts.
6) Push the flex pipe back up into the ceiling
support box, center the Retro Connector,
and attach it to the support box, or decora-
tive sleeve for double wall solid packed
pipe, with the sheet metal screws (sup-
plied).  The holes in the Retro Connector are
pre-punched. Diagram 5.
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.