Potterton eurocondense four 125 kw Installation, Operation And Maintanance Manual page 108

9 Settings
108
Pump speed min (5101) andPump speed max (5102)
Setting of the minimum and maximum speed of the storage tank charging
pump in percent.
Speed Xp (5103)
The P-band Xp defines the amplification of the controller. A smaller Xp val­
ue leads to a higher actuation of the charging pump with equal control dif­
ference.
Speed Tn (5104)
The reset time Tn determines the reaction speed of the controller when
compensating for remaining controller differences. A shorter reset time Tn
leads to faster compensating.
Speed Tv (5105)
The preholding time Tv determines how long a spontaneous change of the
control difference continues to have an effect. A short time only influences
the control variable only for a short time.
Transfer strategy (5130)
The transfer is always allowed or to the set DHW release times.
Interm circ boost recharging (5139)
Setpoint boost for charging setpoint on charging sensor B36 with recharg­
ing.
Intermediate circuit boost (5140)
Setpoint boost for charging setpoint on charging sensor B36 with full
charging.
Excess interm circ temp max (5141)
With this parameter the end criterion of a full charging during control is
specified on the charging sensor B36. If the contents of the stratification
cylinder is charged to the bottom, the temperature increases on the charg­
ing sensor
Flow setp compensation delay (5142)
The filter time for the setpoint lead is set here.
Flow setp compensation Xp (5143)
The P-band Xp defines the amplification of the controller. A smaller Xp val­
ue leads to higher actuation of the charging pump with equal control differ­
ence.
Flow setp compensation Tn (5144)
The reset time Tn determines the reaction speed of the controller when
compensating for remaining controller differences. A shorter reset time Tn
leads to faster compensating.
Flow setp compensation Tv (5145)
The preholding time Tv determines how long a spontaneous change of the
control difference continues to have an effect. A short time only influences
the control variable only for a short time.
Full charging with B36 (5146)
Here it can be set whether the end of the full charging is detected via the
temperature on the charging sensor B36.
No: The end of the full charging is detected via the temperature on the
upper and lower storage sensor B3 and B31.
Yes: The end of the full charging is detected via the temperature on the
upper storage sensor B3 and on the charging sensor B36.
Min start temp diff Q33 (5148)
This parameter determines the switch-on delay of the intermediate circuit
pump depending on the boiler temperature. The intermediate circuit pump
is switched on as soon as the boiler temperature has reached the boiler
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