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March 4, 2002 Page 18 30211C
DV400S DIRECT VENT ROOM HEATER
R
Figure 13
Retro-Fit to Metal
Chimney
VERTICAL
TERMINATION
CAP
VERTICAL
TERMINATION
ADAPTER
UL1777 LISTED
4'' GAS VENT
FLEX LINER
EXISTING
CLASS A
METAL
CHIMNEY
(6'' MIN. DIAMETER)
DURAVENT GS
VENT SECTIONS
When using an existing Class A Metal Chimney
the following requirements are necessary:
Minimum size diameter is 6 inches.
Minimum height from the base of the stove to the
top of termination cap is 9 feet.
The vent from the top of the Heater to the
Chimney must be rigid vent sections. A 4'' UL
1777 listed gas vent aluminum flexible liner can
be used inside the chimney. The flexible liner
must be secured to the last rigid section with
three (3) sheet metal screws. A minimum 3 inch
overlap is required. Remove and discard the
existing chimney termination cap.
Determine the length of the 4'' UL 1777 listed gas
vent flex liner required to meet the vent sections
at the top of the Heater.
Follow the liner manufacturer’s instructions for
installing the liner in the chimney. Attach a flex-
ible liner puller to the liner and secure a rope
to the puller. One person should feed the liner
through the chimney, and another person should
pull the liner from the bottom, with the rope, guid-
ing the liner down the chimney. Extend and run
the 4'' gas vent liner down the chimney leaving 10''
extending from the top of the chimney stack.
Install and secure the VTA (Vertical Termination
Adapter) onto the chimney with the brackets pro-
vided.
Place and secure the Termination Cap on the VTA
with the screws provided. See Figure 13.