Saey 194, Инструкция по установке и эксплуатации, Страница: 12 / 22

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If it draws too little, then the following measures should be considered:
a. Extending the chimney
b. Improving the insulation of the chimney (less cooling of the flue gases)
c. Improving the flow of air into the space in which the stove is installed.
d. Improving the air tightness of the chimney.
Many problems with stoves are caused by badly working chimneys. Therefore we
offer the following tips. These are for information only and are not binding on us.
There are just too many unknown factors affecting how well the appliance-
chimney combination works. If in doubt, you should contact a specialist.
Chimneys that have worked perfectly well with an old stove can give problems
with a new one. The stoves of 30 years ago had much lower performance than
the present generation of stoves which burn a lot cleaner and also have higher
requirements as regards the chimney.
Tips:
e. A round channel is preferable (to minimise friction)
f. The diameter of the chimney must not be smaller at any point than that of
the appliance (except in very long chimneys where a narrower section
should sometimes be included).
g. The mouth of the chimney should be unobstructed.
h. The chimney should be as close as possible to vertical with as few curves
as possible.
i. The chimney must not draw in extra air. Watch out for flue dampers and
cleaning hatches in the cellar or on the roof!
j. The chimney must not have too many connections - that reduces the
upwards pressure. Consult your chimney specialist!
k. Flue connections to different stoves and fireplaces must not be located
opposite each other at the same height, in order to prevent the chance
that combustion gases will not be drawn out. Two flue connections must
be at separated vertically by at least 30 cm.
l. For the chimney opening, you will need to comply with your national
legislation. For Belgium this is NBN 61-001. Here are a few rules from this
standard that cover chimney openings:
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