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DV Only: Maximum height allowed for the vent is 35ft
(10.67m).
Install sealed throat connector or flashing to prevent
leakage of room air up through chimney.
DV Only: Before installing vent liners, mark each liner on
both ends to designate which is the intake and the
exhaust.
Measure the height of the chimney beforehand and
purchase the appropriate kit. Never attempt to over-
stretch a flexible liner to accommodate the height of the
chimney.
The flue damper can be fully blocked open or removed for
installation of the Sienna; the smoke shelves, shields and
baffles may be removed if attached by mechanical
fasteners.
The chimney must be clean, in good working order and
constructed of non-combustible materials.
Make sure that all chimney cleanouts are tight fitting and
will not permit air to leak into the chimney.
Refractory, glass doors, screen rails, screen mesh and
log grates can be removed from the fireplace before
installing the Sienna.
Initial Installation
QUALIFIED INSTALLERS ONLY
VENTING FIREPLACE INSERTS:
The ENVIRO SIENNA may be installed and vented into any solid fuel replace that has been installed
in accordance with the National, Provincial/State and local building codes and has been constructed of
non-combustible materials. This appliance must not be connected to a chimney ue serving a separate
solid fuel-burning appliance. Before starting refer to INITIAL INSTALLATION - PREPARING YOUR SIENNA FOR
INSTALLATION and INITIAL INSTALLATION - CONVERTING A DIRECT VENT FIREPLACE TO A B-VENT FIREPLACE.
An approved chimney liner and rain cap must be used. A throat connector or ashing must be installed
to ensure a tight seal, top performance, safety and efciency. Carefully follow the manufacturer’s
instructions that accompany the chimney liner kit. Use listed B-Vent or Flexmaster double walled
aluminum ex vent.
If necessary, remove the vent collar plate from the top of the insert and connect it securely to the liner
with sheet metal screws and/or hose clamps. Check for any tears in the liner at this point. IMPORTANT:
The screws that hold the vent collar plate in its approved position must be installed.
Provide for proper and adequate venting and air supply for this appliance in accordance with the tables
in the current National Fuel Gas Code, Z223.1/NFPA 54 or the CSA B149.1.
The ow of combustion and ventilation air must not be obstructed.
Means for inspection of the vent connection to the appliance at the time of installation shall be
provided.
Figure 20: Installation of Sienna DV and BV.