Potterton eurocondense four 125 kw, Installation, Operation And Maintanance Manual, Page: 105 / 148

Optg action return diversion (4796)
The function can either be used as return temperature increase or as re­
turn temperature decrease.
Temp decrease: If the return temperature of the consumers is higher
than the temperature on the selected sensor (prog. no. 4795), the lower
part of the storage tank can be preheated with the return flow. The re­
turn temperature drops even lower with this, which leads to a higher effi­
ciency with a condensing boiler, for example.
Temp increase: If the return temperature of the consumers is lower than
the temperature on the selected sensor (prog. no. 4795), the return flow
can be preheated by redirecting over the lower part of the storage tank.
In this way, for example, return flow preheating can be implemented.
Full charging (4810)
The function
full charging
makes it possible for the released generator to
be switched off first despite automatic generator lock if the buffer storage
tank is fully charged. During active function the generator parameterized
for the full charging function is only switched off when the full charging set­
point is reached or the boiler must be switched off because of burner con­
trol.
Off: The full charging function is switched off.
Heating mode: Full charging becomes active if the automatic generator
lock blocks the heat source during valid heat request based on the buf­
fer temperature. If the buffer storage tank reaches the requested tem­
perature at the sensor parameterized for the full charging function, the
function is ended.
Always: Full charging becomes active if the automatic generator lock
blocks the generator during valid heat request based on the buffer tem­
perature or the heat request is invalid. If the buffer storage tank reaches
the requested temperature at the sensor parameterized for the full
charging function, the function is ended.
Full charging temp min (4811)
The buffer storage tank is charged minimally o the set value.
Full charging sensor (4813)
With B4: For the full charging function the buffer storage tank sensor B4
is considered.
With B42/B41: For the full charging function the buffer storage tank sen­
sor B42, if not available buffer storage tank sensor B41, is considered.
9.2.16 Drinking water storage
Forward shift charging (5011)
H Heating program
M Several times during the day
T DHW release
The DHW release is pushed forward by the set charge push forward time
compared to each heating circuit allocation and kept during the heating cir­
cuit allocation.
Flow setpoint boost (5020)
The boiler temperature setpoint for charging the DHW storage tank con­
sists of the DHW temperature setpoint and the flow setpoint boost.
Transfer boost (5021)
Through the transfer, energy can be moved from the buffer storage tank
into the DHW storage tank. For this the current buffer storage tank temper­
ature must be higher than the current temperature in the DHW storage
tank. This temperature difference is set here.
Type of charging (5022)
Charging a stratification cylinder (if available):
Recharging : The cylinder is only recharged at every DHW demand.
Fig.41 Charge push forward time
H
T
1h
1h
M
RA-0000082
9 Settings
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