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Recharging fuel
(cont.)
B
A
Fig. 10
1. Press the "START/STOP" button.
The flue gas fan starts up and the primary air
damper closes.
2. Initially open the hopper cover to lock
3. Wait a short while to allow the low temperature car-
bonisation gas to be drawn out of the hopper.
4. Turn mushroom handle
hopper cover. Fully open the cover.
Measures to be carried out in the event of the boiler overheating
Your boiler is protected from overheating by safety
equipment.
Components:
High limit safety cut-out
■
Thermally activated safety valve
■
Note
Never make adjustments at the high limit safety cut-out
or thermally activated safety valve, which would result
in an exclusion of liability.
Replace faulty components only with genuine spare
parts from Viessmann.
Boiler water temperature has reached 100 °C
A
.
B
clockwise to unlock the
5. Check the fuel level and the height of the glowing
embers.
If there are only glowing embers present, continue.
6.
Danger
Recharging the fuel too slowly, recharging
large amounts of logs or recharging with
pieces of residual wood encourages the for-
mation of low temperature carbonisation
gases in the hopper and can result in defla-
gration.
■
Quickly recharge with wood according to
the current heat demand.
Never place pieces of residual wood,
■
shavings, sawdust, woodchips, wood bri-
quettes or residual wood with shavings
directly onto the glowing embers.
!
Please note
If the logs are too big, they will impair the
function of the boiler and may damage it.
Take the depth of the hopper and size of the
hopper cover into account when selecting
logs. Never exceed the maximum log length.
See page 55.
7. Close the hopper cover.
8. Open the ash door if necessary.
This supports the combustion process. We recom-
mend this procedure only with flue gas tempera-
tures up to 100 °C.
Note
Notify your heating contractor if the boiler overheats
again after a short time or overheats regularly.
Start-up/shutdown
19
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