Nibe VEDEX 4000, Installation And Maintenance Manual

Page: 21 / 36

21 VEDEX 4000
Turbulators
Ten turbulators are supplied with the boiler. These
are located in the ducts in the boiler’s convection part
as illustrated. The turbulators affect the turbulence of
the flue gases, which means that a greater amount
of energy is transferred to the boiler water. The tem-
perature in certain chimneys may become so low that
there may be a risk of condensation build-up in the
smoke duct. To increase the temperature in the chim-
ney the turbulators can be removed, one at a time as
illustrated. For each turbulator that is removed, the
flue gas temperature rises from the boiler by 15 – 25
°C. Remove the turbulators in number order until the
flue gas temperature in the chimney is correct.
The flue gas temperature must not drop be -
low 65 °C 0.5 m below chimney opening.
NOTE
LEK
1 3 4
5 6
2
Installing ceramics
Pre-installed ceramic kit Ceramic grate
Flame trough
Place the ceramic inserts in through the filler door. First
position the front stone and back stone (B). Then position
the rear stones (C) followed by stones (D).
The trough must be slid all the way into the
chamber.
NOTE
Scratches on ceramics do not affect the boil -
er operation or the combustion process.
NOTE
A
B
C
C
D
D
B
Open the lower door of the combustion chamber. Slide
the ash drawer (A) onto the guides under the ceramic
grate and then insert the ceramic insert (E).
E