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Note: To convert a B-Vent to a Direct Vent,
remove the air intake plug, remove the
spill switch assembly and re-install the ue
slider bottom plate, re-install the jumper
onto the thermocouple wire, re-install the air
intake cover plates, install the proper venting,
re-install the screw into the draft tube at the
front top of the unit.
Figure 38: Air Intake Cover Plates.
VENTING FIREPLACE INSERTS:
The ENVIRO Sonnet 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. Before starting, refer to I
NITIAL INSTALLATION - PREPARING YOUR SONNET FOR
I
NSTALLATION and INITIAL INSTALLATION - CONVERTING A DIRECT VENT FIREPLACE TO A B-VENT FIREPLACE. Please
reference the information in Table 5 and Figures 39, 40, and 43.
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.
Initial Installation
QUALIFIED INSTALLERS ONLY
3. Remove screw from draft tube and remove air intake covers.
a) Remove the glass door as shown in the M
AINTENANCE AND SERVICE - GLASS DOOR REMOVAL.
b) Using a T-20 screwdriver remove the screw that is in the draft tube pointed at in Figure 30.
c) Remove the two (2) air intake covers below the rebox (refer to Figure 38), they can be pried out
using a at head screwdriver.
d) Install door.
4. Test re the appliance and ensure proper operation. A venturi adjustment (Figure 8) could be required
to achieve an efcient ame, refer to Figure 79. Improper operation or adjustment could result in
Carbon Monoxide production causing personal injury or property damage.
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.
NOTE: If the Sonnet unit is pulled out
of its installation, and the vent air intake
system is disconnected for any reason,
ensure that the vent-air intake pipes are
re-sealed with high-temperature sealant
or silicone and reconnected with three
(3) sheet metal screws evenly spaced.
2ft (0.6m)
Minimum
3ft (0.9m)
Minimum
Within
10ft (3m)
Roof ridge or
any other portion
of a building
Figure 39: Roof Clearances.