Potterton eurocondense four 125 kw, Installation, Operation And Maintanance Manual, Page: 111 / 148

Solid fuel boiler pump Q10: Connection of a circulation pump for the
boiler circuit for the connection of a solid fuel boiler.
Time setting 5 K13: The relay is controlled by the time program 5 ac­
cording to the settings.
Buffer return valve Y15: This valve must be configured for the return
temperature increase/reduction or partial charging of the buffer storage
tank.
Solar pump ext exch K9: The solar circuit pump for the external heat ex­
changer K9 must be set here.
Solar ctrl elem buffer K8: If several exchangers are connected, the buf­
fer storage tank must be set at the respective relay output and the type
of solar regulating unit must be defined under prog.no.5840.
Solar ctrl elem swi pool K18: If several exchangers are connected, the
swimming pool must be set at the respective relay output and the type of
the solar regulating unit must be defined in prog.no. 5840.
Swimming pool pump Q19: Connection of a swimming pool pump at the
input Q19 .
Cascade pump Q25: Common boiler pump for all boilers in a cascade.
St tank transfer pump Q11: The DHW storage tank can be heated by the
buffer storage tank subject to it being hot enough. This transfer is
brought about by transfer pump Q11.
Hot water mixing pump Q35: Separate pump for storage circulation dur­
ing active legionella function.
HW interm circ pump Q33: Charging pump for DHW cylinder with exter­
nal heat exchanger.
Heat request K27: Output K27 is activated as soon as a heat demand
exists in the system.
heating pump CH1 Q2/heating pump CH2 Q6: The relay is used for ac­
tuating the heating circuit pump Q2/Q6.
Hot water ctrl elem Q3: Depending on the hydraulics a connected DHW
charging pump or diverting valve.
Status output K35: The status output is operated when a command ex­
ists from the controller to the burner control. If there is a disturbance,
which prevents the burner control from operating, the status output is
switched off.
Status information K36: The output is set when the burner is in opera­
tion.
Flue gas damper K37: This function activates the flue gas damper con­
trol. If the flue gas damper control is activated the burner will only start
operating when the flue gas damper is open.
Fan shutdown K38: This output serves to switch the fan off. The output
is activated when the fan is needed; otherwise it is not activated. The
fan should be switched off as often as possible in order to minimise the
total energy consumption of the system.
Sensor input BX1 (5930),Sensor input BX2 (5931) andSensor
input BX3 (5932)
Functions in addition to the basic functions are made possible by configur­
ing the sensor inputs.
None: Sensor inputs deactivated.
Hot water sensor B31: Second DHW sensor, which is used for full
charging of the legionella function.
Collector sensor B6: First solar collector sensor in a collector field.
HW circulation sensor B39: Sensor for DHW circulation return.
Buffer sensor B4: Lower buffer storage tank sensor.
Buffer sensor B41: Centre buffer storage tank sensor.
Common flow sensor B10: Common flow sensor for boiler cascades.
Solid fuel boiler sensor B22: Sensor for the acquisition of the tempera­
ture of a solid fuel boiler.
HW charging sensor B36: DHW sensor for DHW charging systems.
Buffer sensor B42: Upper buffer storage tank sensor.
Common return sensor B73: Return sensor for the return diversion func­
tion.
Cascade return sensor B70: Common return sensor for boiler cascades.
Swimming pool sensor B13: Sensor for measurement of swimming pool
temp.
9 Settings
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