User Manual

39
AUTOMATIC CONTROL
2 DOMESTIC HOT WATER SUPPLY CONTROL BT Reason for energy savings
2.3
Control of DHW storage charging with solar collector
and supplementary heat generation
DHW storage tank with two integrated heat
exchangers.
0 Manual control Control is affected via thermostat. The generator
must be preselected:
1 Automatic control of solar storage charge
(Prio. 1) and supplementary storage charge
(Prio. 2)
The solar collector can recharge any amount of
freely available energy up to the maximum DHW
storage tank temperature so that the maximum
possible share of solar energy is used. Heat
generation only supplements the required
energy amount to ensure a sufficient DHW
temperature at any time.
2 Automatic control of solar storage charge
(Prio. 1) and supplementary storage charge
(Prio.2) and demand based supply temperature
control or multi-sensor storage management
Solar storage tank charging has the highest
priority.
The remaining, required coverage is provided by
the heat generator via demand-controlled supply
temperatures thus reducing heat losses in
generation and distribution. Multi sensors allow
for dividing the DHW storage tank into various
zones, ensuring better adaptation to usage. This
reduces heat losses in the storage tank.
2.4 Control of DHW circulation pump
0 No control, continuous operation
3
Hot water circulates, leading to unnecessary
heat losses which have an impact on overall
efficiency of DHW heating.
1 With time program Heat losses in hot water circulation are limited to
primary occupancy periods.