Yunca Heating Solid Fuel Maintenance Guide April 2010
3. FIREBRICKS, COMBUSTION
PLATES, AIR TUBES.
With the exception of the “new model” style multi
(freestanding and inbuilt), all Yunca fires feature a
40mm firebrick (1605) – three or four down each
side and four or five across the back - to protect
your firebox. In some models these fit snugly, in
others there may be a small gap between bricks.
Grip the brick at the base, lift slightly and pull
forward to remove.
3A. HOBSON, FITZROY, QEWB SERIES
and VARIANTS.
The firebricks support a solid combustion plate
(1606Q).
Woodburners feature a round air tube (1607,
1607C) fitted at the front of the combustion
plate (one end of the tube goes through a hole
in the right side of the firebox, and the other end
hooks over the angle piece on the left of the
combustion plate). It may be easier to fit the
round air tube when the front, right fire brick is
removed.
CLEAN AIR versions of the HOBSON and
FITZROY have a SQUARE air tube (1607HSC)
fitted, it sits on top of the bricks, under the
combustion plate.
3B. BLENZ (also EXCEL, FINZ)
Three different types for these models:
- no air tube
- a single air tube
- a double round air tube.
In the case of all models there are four fire
bricks (1605) placed inside the frame, which is
supported by the side bricks. Bricks within the
combustion frame can be replaced with the
frame in-situ, slightly angle the brick up and into
place. N.B. Older models had a solid metal
plate, these are now replaced with the frame
and fire bricks.
When replacing the frame remove bricks and
any air tube from inside the frame first. Then
remove side bricks to enable the empty frame
to be removed from the firebox. Ensure the
firebox is emptied of all bricks to give room to
manoeuvre. Place the replacement frame inside
the firebox, support the corners first, and then
place side and back bricks. Finally, place bricks
into the top of the frame and fit any air tube. It
may be easier to fit the round air tube when the
front, right fire brick is removed.
3C. WEGJ 2000
Five fire bricks (1605) are placed inside the
frame. It may be difficult to replace bricks in
clean air models because there is less room
above the frame, however by “stacking” one
brick on top of another, and pushing them to the
side, there may be enough room to manoeuvre
new bricks into place.
A round air tube (1607W2R, 1607W2RC) is
fitted at the front of the combustion plate frame
(one end of the tube goes through a hole in the
left side of the firebox, and the other end
against the angle piece on the right of the
combustion plate). It may be easier to fit the
round air tube when the front, left fire brick is
removed.
CLEAN AIR versions have a SQUARE air tube
(1607W2S) fitted, it sits on top of the bricks,
under the combustion plate.
N.B. The “original” Wegj has a steel drum firebox, please
refer to our spare parts guide or the manufacturer for
guidance.
3D. “NEW MODEL” MULTI
(FREESTANDING and INBUILT)
These models use castings rather than bricks,
although after use they may not look it!
Replace castings that are worn / warped (they
lift out). When cleaning the fire ensure you
remove the back and rear castings from time to
time as ash will deposit behind these parts and
put pressure on other parts (such as the grate)
causing them to warp.
The combustion plate (1606M) is solid with
bars at the front and back, and a cut out either
side. The bars are different widths, the smaller
bar faces to the front of the fire.
A half moon casting (1207M) is bolted to the
underside of the ledge that supports the
combustion plate at the top of the firebox. The
straight edge of this part faces the front of the
firebox. To fit – first remove the combustion
plate to allow access above. Hold the casting in
place, insert the bolts up from underneath and
reach up through the gap to secure with the
nuts provided.
YUNCA HEATING
41 ONSLOW ST, PO Box 932,
INVERCARGILL
Ph 03 216 6626
sales@yunca.co.nz
www.yunca.co.nz
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