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Siemens Switzerland Ltd
User manual RVS61.843 CE1U2355en_02
HVAC Products 6 The settings in detail 23. November 2007
Electric immersion heater
Line no. Operating line
5060 El imm heater optg mode
Substitute* ¦ Summer ¦ Always
5061 El immersion heater release
24h / day ¦ DHW release* ¦ Time program 4
Substitute
The electric immersion heater ensures DHW charging should the heat pump go to
lockout, should it be off, or should DHW charging be aborted by the heat pump.
If the electric immersion heater must ensure DHW charging because the heat pump
was not able to complete the charging process, the controller saves the DHW
temperature at which the electric immersion heater took over on operating line “Curr
DHW charg temp HP”(7093).
Also, at the changeover point, the switch-on temperature is readjusted. If the DHW
temperature increases due to the electric immersion heater or some other heat source
(e.g. solar), the switch-on point also increases according to the slave pointer principle.
The switch-on point increases to a maximum of the current DHW setpoint minus the
switching differential. If the DHW temperature falls below the switch-on point, the heat
pump is put into operation.
Summer
When all heating circuits have switched to summer operation, the electric immersion
heater ensures DHW charging from the next day. This means that the heat pump
remains deactivated during summer operation.
DHW heating via the heat pump is resumed only when at least one of the heating
circuits has switched to heating mode.
In heating mode, the electric immersion heater is operated as described above under
“Substitute“.
Always
DHW charging is always provided by the electric immersion heater.
The DHW operating mode button
also acts on the electric immersion heater. For
the DHW to be heated, the DHW operating mode button must be pressed.
24h/day
The electric immersion heater is always released, independent of time programs.
Example:
DHW release
The electric immersion heater is switched according to DHW release.
El imm heater optg mode
El imm heater release
0 6121824
h
2358Z24
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