
18
Biomass boiler with return protection, loading with com-
bined thermal store, 2 mixed heating circuits (high temper-
ature HT and low temperature LT).
Use of the complete buffer volume for the boiler and the
solar system
1*: Temperature controlled mixing unit to prevent calcifi-
cation of the DHW heat exchanger. Can be omitted in the
case of sufficient mixing volume in the combined thermal
store.
2*: Reloading can also be with a pump and 2 changeover
valves.Scalding protection DHW and DHW recirculation
not drawn
5�9 Biomass boilers and combined thermal store
HT
LT
HF
HF
ST
SB
C
Control principle:
When heating requirements in combined thermal store will
be loaded to P1.
When solar Combisystems to higher temperatures is loaded
as a buffer and unloaded with P2.
T D M A - VA R I C A L :
Hydraulic plans