23
2.
Operation
2.5.5 Chimney sweeper function
This function aids the performance of legally required emis-
sions testing.
Note!
The chimney sweeper function cannot be started in
“solid fuel/buffer mode”. The chimney sweeper function
must not be started if an installed solid fuel boiler is operating
(heated up). The chimney sweeper function may be started if
there is no solid fuel boiler installed or if this is not operating
but only the accumulator tank is active. In this case, first set
the operating mode switch on the WVF+ to relay test 2 or on
the B-PLM+ to relay test 1 (see WVF+ or B-PLM+ operating
manual). Sufficient heat consumption must be ensured when
using an external control.
Pressing the
manual operation/chimney sweeper func-
tion
button once turns on the lighting and display. Pressing
the button again activates the chimney sweeper function for
emission testing – Fig. 17. The boiler temperature is set to
appr
ox. 140 °F / 60 °C for 45 minutes.
Fig. 17
Chimney sweeper func.
Power 100%
45 min
(Operating phases)
30%
Cancel 100%
107
°F
(Symbol flashes)
The various operating phases are displayed here,
including Burner in operation, Burner OFF, etc.
By pressing the corresponding menu button, the boiler is
enabled to operate with 30 % or 100 % output for emission
testing – Fig. 18. The backlight is turned off after 10 min.,
however, the function and display remain unchanged. Only
the lighting is switched on when the button is first pressed.
The operating time is reset to 45 min. when the
manual ope-
ration/chimney sweeper
function
button is pressed again.
Fig. 18
Chimney sweeper func.
Power 30%
45 min
(Operating phases)
30%
Cancel 100%
107
°F
(Symbol flashes)
Fig. 19
Chimney sweeper func.
Power 30%
45 min
(Operating phases)
30%
Cancel 100%
107
°F
(Symbol flashes)
Fig. 20
Shut-down procedure
Burnout
Info
Menu
107
°F
The chimney sweeper function ends:
– when the
Cancel
button is pressed – Fig. 19.
– automatically, after about 45 minutes.
2.5.6 Shut-down procedure
The boiler is turned off – Fig. 20.
The green LED flashes during
the shut-down procedure.
