Hoval AgroLyt 20, Руководство по эксплуатации, Страница: 12 / 34

Key Designation Function
15
Fuse
Check the 6.3 A fuse if all the displays are dark. This
should only be done by the heating engineer.
16
Door lock lever
Locks the door and prevents it from being opened during
operation. The door may only be opened for refilling. This
should be done slowly and carefully. Sparks and tongues
of flame can emerge through the door.
17
Flue gas thermometer
The flue gas temperature is shown here. If the flue gas
temperature is over a longer period over 240 °C, (or
210 ºC for boilers with heating surface cleaning) the boil-
er must be cleaned. If the flue gas temperature remains
excessive, it will also be necessary to adjust the air flow
rate. See next position or call a heating engineer.
18
Air flow adjustment
(primary air)
To guarantee that the combustion is optimal, it is neces-
sary to adjust the necessary air flow rate.
The initial setting is performed by the heating engi-
neer.
The required air flow rate depends on various criteria
(e.g. type and humidity of wood, type of chimney, posi-
tion of building, etc.). Therefore, each boiler has to be
adjusted on-site.
A flue gas thermometer is essential for setting the air
flow rate!
Pre-condition for a correct setting:
The boiler must be clean; particularly the downstream
heating surface!
The primary air flow is adjusted as follows:
Set the upper adjusting knob (18) to 3 (i.e. basic set-
ting)
If the flue gas temperature at full load exceeds 230 °C *):
Turn back knob to 2 or, if necessary, to 1.
If the flue gas temperature at full load is less than 180 °C **):
Turn knob to 4 or, if necessary, to 5.
Ensure that the setting is not changed by accident!
If the flue gas temperature rises only after few weeks:
Clean the downstream heating surface!
Air flow adjustment
(secondary air)
The adjustment of the secondary air flow is carried
out and fixed by the heating engineer as part of
the commissioning work.
Heating system control
*) For boilers with heating surface cleaning system “WiKo” 200 °C
**) For boilers with heating surface cleaning system “WiKo” 160 °C
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