53
Solid fuel boiler
the solid fuel boiler function can be used for trans-
ferring heat from a solid fuel boiler to a store.
the allocated relay is energised when all switch-on
conditions are fulfilled:
• the temperature difference between the allocated
sensors has exceeded the switch-on temperature
difference
• the temperature at the solid fuel boiler sensor has
exceeded the minimum temperature
• the temperature at the store sensor has fallen
below the maximum temperature
If
∆
Tset
is exceeded, pump speed control will come
into effect. For every deviation of 2 K [4 °ra], the
pump speed will be adjusted by 10 %.
adjustment channel Description
adjustment range / selection Factory setting
relay
relay selection
system dependent
system dependent
sen. Boiler
solid fuel boiler sensor selection
system dependent
system dependent
sen. store
store sensor selection
system dependent
system dependent
∆
ton
switch-on temperature difference 1.0 ... 30.0 K [2.0 ... 60.0 °ra]
6.0 K [12.0°ra]
∆
toff
switch-off temperature difference 0.5 ... 29.5 K [1.0 ... 59.0 °ra]
4.0 K [8.0°ra]
∆
tset
set temperature difference
1.5 ... 40.0 K [3.0 ... 80.0 °ra]
10.0 K [20.0°ra]
min. speed
minimum speed
30 ... 100 %
30 %
tmax st.
maximum temperature
10 ... 95 °C [50 ... 204 °F]
60 °C [140 °F]
tmin boiler
minimum temperature
10 ... 95 °C [50 ... 204 °F]
60 °C [140 °F]
Funct.
activation / Deactivation
activ., Deactivated
Deactivated
Arrangement / Opt. functions / Add new function... / Solid fuel boiler
Sensor Store
Relay
Sensor Solid fuel boiler
295931-36390-8667 SOM 8 plus_en.indb 53
20.10.2011 13:14:47