3. The stove pipe must enter the chimney at least 8
inches higher than the bottom of the chimney liner.
The distance between the ceiling and the vent
pipe edge closest to the ceiling must be at least 18
inches (46 cm).
4. Install a thimble into the created opening. The
thimble must:
• Be made of clay
• Be at least 5/8 inch (16 mm) thick
• Be oversized for stovepipe so that there is
approximately a ½ inch (13 mm) air gap. This is
a requirement so that the pipe can safely expand
and contract as it warms and cools.
• Be located so that it will be surrounded by either
12 inches (305 mm) or masonry brickwork or 24
inches (61 cm) of stone.
• Be installed so that its butt is flush with the
chimney lining (see Figure 1 1 page 10)
5. Secure the thimble with refractory mortar.
6. Install the stove pipe so that it is as far as possible
into the thimble without protruding passed the flue
lining (again, see Figure 11 page 10)
7. In order to maintain continuity of airtightness at the
location where the chimney or other component
penetrates the air barrier
between the stove pipe and the thimble with either
high temperature sealant or ceramic wool.
8. Using either high-temperature caulk, ceramic wool,
or furnace cement secure and seal the throat
damper and (if present) any clean out or other
openings at the base of the chimney.
Figure 15
Fireplace converted to Chimney
Wood Fire Stove
system, seal the airspace
VENTILATION
IMPORTANT: Make sure nothing is blocking the
air movement around the stove so there is enough
makeup air to allow the stove to operate correctly
when an outside air kit is not used.
Air introduction to stove happens in three locations:
1. The Lower Primary Air Orifice (LPAO), behind the
door.
2. The primary air inlet.
3. The secondary stage air tubes.
LPAO
Primary Air Inlet
Figure
16 Stove Air Flow
• By pushing the air control (on the front of the
stove) into the stove the primary air inlet hole at the
back of the stove is closed.
• Pulling the primary air inlet air control away from
the stove increases the size of the opening for air
to enter the firebox.
In general, the further the air control is pulled out
the hotter the stove will get. The best position for the
air control will depend on the chimney specifications,
weather, and fuel.
In order to find the best position for the air control
in your installation, start a stove fire as this manual
details. For 15 to 20 minutes have the air control pulled
away from the stove to fully open the Primary Air Inlet.
At the secondary air combustion (top of the firebox)
you should be able to observe a secondary combustion
taking place. Push the air control in towards the
stove to the desired heat setting. If the secondary
combustion disappears, restart it by pulling the air
control away from the stove. Move the air control to
the desired heat setting by gradually pushing it in and
ensuring that secondary air combustion is still being
supported. Secondary air combustion is important for
maximizing the heat transfer from the stove to you and
minimizing the amount of smoke which can condense
within your chimney as creosote.
E13
Operating Instructions and Owner's Manual
Secondary Air
Combustion