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Building Technologies Division User Manual LMS14… CC1U7471en
6 The settings in detail 28.01.2015
6.16.2 Operating mode
Line no. Operating line
4102 Locks other heat sources
Off
On
When the solid fuel boiler is put into operation, other heat sources, such as oil/gas
boilers, are locked. Locking takes place whenever the boiler temperature rises to such
a level that crossing of the comparative temperature can be expected. This anticipation
function enables the locked heat sources to end any pump overrun before the solid fuel
boiler pump is activated. Also, in the case of a common stack, it can be made certain
that only one boiler is in operation at a time.
Note!
Due to locking of the other heat sources (Locks other heat sources (4102) set to On),
an installed system pump is also locked when Syst pump on heat gen lock (2121) is
set to Off.
In that case, consumers downstream from the system pump do not receive any heat.
T
t
4133
4 K
10'
Stat
TKx
8310
10'
4 K
1
0
7471d36/0910
Figure 64: Operating mode - Locks other heat sources
Key
Line no. Meaning
4133 TVgl Comparative temperature
8310 TKx Current boiler temperature
8560 TFx Solid fuel boiler temperature
10´ Actual value of boiler temperature anticipated in 10 minutes
dt Progression of time
dTF Temperature rise of solid fuel boiler
Stat State of heat generation lock (0 = not locked, 1 = locked)
The heat generation lock is activated if – based on the current temperature rise – the
boiler temperature will exceed the comparative temperature by 4 K in 10 minutes. Heat
generation lock remains active for as long as the boiler pump is running.
Locks other heat sources
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