Potterton eurocondense four 125 kw Installation, Operation And Maintanance Manual page 107

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Recooling temp (5055)
Setting the temperature for recooling the DHW-storage.
Recooling collector (5057)
Recooling of the overhaeted collector through giving off of the energie to
the surrounding of the collector.
El imm heater optg mode (5060)
Substitute: The DHW is only heated by an immersion heater if the boiler
signals a malfunction or a boiler lock exists.
Summer: The DHW is heated by an immersion heater if all connecting
heating circuits have switched to summer mode. As soon at least one
heating circuit is switched to heating mode, the DHW preparation is tak­
en over by the boiler again. The conditions listed for the immersion heat­
er under the substitute operating mode are also activated in summer
mode.
Always: DHW is heated exclusively by the immersion heater.
El immersion heater release (5061)
24h/day: Immersion heater permanently released
Hot water release: Immersion heater released subject to DHW-release
(see prog. no. 1620).
Time hot water: Release of the immersion heater via the time switching
programme 4 of the local controller.
El immersion heater control (5062)
External thermostat: The storage tank temperature is achieved with an
external thermostat without the controller providing a set temperature.
Hot water sensor: The storage tank temperature is achieved with an ex­
ternal thermostat with setpoint control of the controller.
Hot water boost (5070)
The DHW-push can activated manually or automatically. It causes a one-
time DHW charging to the nominal setpoint.
Off: The DHW-push can only activated manually.
On: If the DHW temperature drops by more than two switching differen­
ces (prog. no. 5024) below the reduced setpoint (prog. no. 1612), it will
be recharged once to the DHW nominal setpoint (prog.no.1610).
Note
The automatic push only works when DHW operating mode is set.
Excess heat draw (5085)
Excess heat draw-off can be triggered by the following functions: Maxi­
mum storage tank temperature, automatic push, heating priority time push,
excess heat draw-off, active inputs H1, H2, H3 or EX2, storage tank re­
verse cooling, solid boiler excess heat draw-off. If an excess temperature
discharge is activated, the excess energy can be dissipated through the
central heating drawing off heat. This can be separately set for each heat­
ing circuit.
With buffer (5090)
No: The DHW storage tank is supplied directly by the boiler.
Yes: The DHW storage tank is supplied by the buffer storage tank.
With prim contr/system pump (5092)
No: The DHW storage tank is supplied without primary controller/feed
pump.
Yes: The DHW cylinder is supplied from the primary controller on/by the
feed pump.
With solar integration (5093)
This function determines whether the DHW cylinder should be heated by
solar energy.
9 Settings
107