8
candle flame, as shown in Figure 3 . Put a candle near the chimney connection drain. If the
flame bends towards drain, the draft is satisfying (Figure 3b). If the flame doesn’t bend or
bends a little, that indicates poor draft(Figure 3a).
If there is poor draft in the chimney (Figure 3a), check the chimney operation. The chimney
should be located inside the building, and if it’s located on the external walls of the building,
it’s recommended insulation chimney.
Figure 3a Figure 3b
Disadvantages of the chimney (Figure 4):
`
1.
The chimney is higher than the top of the roof, a small cross section of the output,
2.
Excessive slope
3.
A sudden change of direction of the flue channel
4.
Stove or some other device connected to the same flue channel,
5.
Bulges in the flue channel
6.
Cracks
7.
Alien body or accumulated grime,
8.
Tube inserted too deeply,
9.
Fan or other device that creates a vacuum in the room
10.
Unsealed or opened cleaning hole
