User Manual

37
AUTOMATIC CONTROL
2 DOMESTIC HOT WATER SUPPLY CONTROL BT Reason for energy savings
Term: Function
Charging time release: Storage charging time
release by time switch program
Multi-sensor storage management: Demand-
oriented storage management using two or more
temperature sensors
Heat generation: Boilers (fired with different
types of fuels), heat pump, solar power, district
heating, CHP.
Demand-oriented supply: Information
exchange to supply according storage
temperature demand
Return temperature control: Charging pump
control for return temperature reduction
Solar storage charge: Control of charging pump
on / off to maximum DHW storage temperature
during supply of free solar energy. Solar collector
supplies the first priority energy.
Supplementary storage charge: Release of
supplementary control from heat generation with
storage charging time release by time switch
program to nominal DHW storage temperature or
when going below the reduced DHW storage
temperature. Heat generation supplies the
second priority energy.
1
2.1
Control of DHW storage temperature with integrated
electric heating or electric heat pump
0 Automatic control on/off
Control is affected via a thermostat.
1 Automatic control on/off and scheduled charging
enable
Release of the charging time results in energy
savings (losses in the DHW storage tank) by
defining the charging duration and preventing
frequent charging. If the DHW temperature
drops below a certain reduced level, recharging
takes place even without a time-based release.
2 Automatic control on/off and scheduled charging
enable and multi-sensor storage management
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.
2.2
Control of DHW storage temperature using heating
water generation
0 Automatic control on/off
Control is affected via thermostat.
1 Automatic control on/off and scheduled charging
enable
2
Release of the charging time enable results in
energy savings (losses in storage tank) by
defining the charging duration and preventing
frequent charging. If the DHW temperature
drops below a certain reduced level, recharging
takes place even without a time-based release.
2
Automatic control on/off, scheduled charging
enable and demand-based supply temperature
control or multi-sensor storage management
Demand-controlled supply temperature reduces
heat losses in generation and distribution. The
supply temperature can be matched to the DHW
storage tank temperature and increased as
needed. Spreading the load over time (e.g.
heating circuits) lowers the maximum output for
generation: Generation can be operated in an
optimum part load range.