Potterton eurocondense four 125 kw Installation, Operation And Maintanance Manual page 91

Fig.34 Reduced setpoint increase
TA1
TK
TR
-15
Fig.35 Temperature profile of the floor cur­
ing function
X Fh
Fh + Bh
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TA1 Reduced setpoint increase start
TA2 Reduced setpoint increase end
TA2
TAg Outside temperature mixed
When only a small heating output is required to cover demand, the re­
duced room setpoint can be increased in the case of cold outside temper­
atures. This increase is subject to outside temperature. The lower the out­
side temperature, the higher the reduced room temperature setpoint will
be increased. The start and end of the increase can be selected. Between
these two points there is a linear increase of the "reduced setpoint" up to
-5 TAg
the "comfort setpoint".
RA-0000071
This function is used to suppress the pump switching off during the quick
reduction and when the room setpoint is reached (room thermostat, room
sensor or room model).
This function prevents overheating of the pump heating circuit by switching
the pump on and off, if the flow temperature is higher than the flow tem­
perature required according to the heating curve (e.g. in case of higher re­
quests from other consumers).
The heat demand of the mixer heating circuit to the generator is boosted
to above the set value here. This boost is intended to correct temperature
fluctuations to be able to be compensated with the mixer controller.
Setting the actuator running time of the mixing valve used.
For mixing circuits, a kick-start of the mixer drive is carried out after a
pump kick-start (pump is OFF). In this case, the mixer is controlled in di­
rection OPEN and CLOSED.
The time of activation in direction OPEN corresponds to the drive running
time.
The floor curing function serves controlled drying out of screed floors
Bh
RA-0000072
A correct function is only possible with a correctly installed heating system
(hydraulic, electrical systems and settings).
Deviations can result in damage to the screed.
The screed function can be stopped prematurely by setting 0=OFF.
Setting of the temperature to which manual control is carried out with floor
curing function activated.
TK Comfort setpoint
TR Room temperature reduced setpoint
Continuous pump operation (809, 1109, 1409)
No: the heating circuit pump /boiler pump can be switched off by quick
reduction or reaching the room set point.
Yes: the heating circuit pump/boiler pump remains switched on even
during the quick reduction and after the room setpoint has been
reached.
Overtemp protect pump circ (820, 1120, 1420)
Mixing valve boost (830,1130, 1430)
Actuator running time (834, 941, 1134)
Floor curing function (850, 1150, 1450)
X Start day
Fh Functional heating
Ch Curing heating
Off: The function is switched off.
Functional heating: Part 1 of the temperature profile is run automatically.
Curing heating: Part 2 of the temperature profile is run automatically.
Functional/curing heating: The whole temperature profile is run automat­
ically.
Manually: Manual control to the screed setpoint.
Caution
Observe the requirements and standards issued by the screed
manufacturer.
Floor curing setp manually (851, 1151, 1451)
9 Settings
91