Potterton EC three 125 Installation, Operation And Maintenance Manual page 110

Programming
110
- El imm heater DHW K6: With the connected electrical immersion heater, the
DHW can be charged according to the operating side DHW storage operating
lines electrical immersion heater.
Note: The Operating mode is set under programme number 5060.
- Collector pump Q5: Connection of a circulating pump in case of solar collector
use.
- Cons circuit pump VK1/2: Connection of a pump at the input Q15/18 for an addi-
tional consumer, which is requested via an Hx-input.
- Boiler pump Q1: the connected pump is used for recirculation of the boiler water.
- Alarm output K10: An occurring fault will be signalled with the alarm relay. The
contact is closed with the delay time selected under prog. no. 6612. If no fault
message exists, the contact opens without delay.
Note: The alarm relay can be reset without removing the fault (see prog. no. 6710).
The alarm relay can also be closed temporarily by a message which, for example,
leads to restart.
- Heating circuit pump HC3 / Q20: Activating the pump heating circuit HC3.
- System pump Q14: Connection of a system pump.
- Heat gen shut-off valve Y4: Connection of a changeover valve for hydraulic de-
coupling the heat generator from the rest of the heating system.
- Solid fuel boiler pump Q10: Connection of a circulating pump for the boiler cir-
cuit for connection to a solid fuel boiler.
- Time program 5 K13: The relay will be controlled by the time program 5 accord-
ing to the settings.
- Buffer return valve Y15:This valve must be configured for return temperature in-
crease/decrease or the buffer storage tank partial charging.
- Solar pump ext exch K9:here, the solar pump external exchanger K9 must have
been set for the external heat exchange.
- Solar ctrl elem buffer K8: if several exchangers are connected, the buffer storage
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 buffer K8: if several exchangers are connected, the swimming
pool must be set at the respective relay output and the type of the solar regulat-
ing 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: Boiler pump in common for all boilers in a cascade.
- St tank transfer pump Q11: The drinking water storage can be charged from the
buffer storage, if is sufficiently hot. This transfer is carried out with the transfer
pump Q11.
- DHW mixing pump Q35: Separate pump for storage circulation during active le-
gionella function.
- DHW interm circ pump Q33: Charge pump for domestic hot water storage with
external heat exchanger.
- Heat request K27: As soon as a heat demand exists in the system, the output K27
will be activated.
- Heating circuit pump HC1 /HC2: The relay is used for actuating the heating cir-
cuit pump Q2/Q6.
- DHW controlling element Q3: Depending on the hydraulics a connected DHW
charging pump or diverting valve.
- Status output K35: The status output will be operated when a command exists
from the controller to the firing automation. If there is a disturbance, which pre-
vents the firing automation to operate, the status output will be switched off.
Condensing gas boiler Eurocondense three125-300 kW 7308536-02 06.13