Yes
If no other heat source provides forced charging, electric immersion heater K16 is used.
Solar integration
Line no. Operating line
4783 With solar integration
Select here whether the buffer storage tank can be charged by solar energy.
6.18 DHW storage tank
Abortion of DHW charging
2358A05
B3
Q3
K6
If DHW charging is stopped because the heat
pump has exceeded the number of permitted
charging attempts (2893), the electric immersion
heater (K6) – if present – continues the charging
process.
If no electric immersion heater is used, DHW
charging is resumed as soon as the DHW storage
tank temperature has dropped by the preset DHW
switching differential.
The following criteria can lead to abortion of DHW charging by the heat pump:
• The heat pump cannot complete DHW charging due to a high-pressure fault
• The heat pump must stop DHW charging because the hot-gas or the flow
temperature approaches its maximum value. The permitted approach to the
maximum value is preset.
Charging control
Line no. Operating line
5020 Flow setpoint boost
5021 Transfer boost
5022 Type of charging
With B3 ¦ With B3 / B31 ¦ With B3, legio B3/B31
5024 Switching differential
The DHW request to the heat source is made up of the current DHW setpoint plus the
adjustable setpoint boost.
Flow setpoint boost
Heat transfer makes it possible to transport energy from the buffer storage tank to the
DHW storage tank. In that case, the actual buffer storage tank temperature must be
higher than the actual temperature of the DHW storage tank.
Increase of transfer boost
The respective temperature differential can be set here.
Type of charging
Storage tank charging can be effected with one or 2 sensors.
It is also possible to implement charging with one sensor and the legionella function
with 2 sensors (setting 3).
161/258
Siemens Switzerland Ltd User manual RVS61.843, RVS41.813 CE1U2355en_02
HVAC Products 6 The settings in detail 28. September 2009
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