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

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Off: The system pump is not locked.
On: When the generator lock is active the system pump is also locked.
Mixing valve boost (2130)
For the admixture the boiler flow temperature actual value must be higher
than the requested setpoint of the mixer flow temperature, since this can­
not be corrected otherwise. The controller forms the boiler temperature
setpoint from the boost set here and the current flow temperature setpoint.
Actuator running time (2134)
Setting the actuator running time of the mixing valve used.
Primary contr/system pump (2150)
Before buffer: The primary controller/feed pump is arranged with existing
buffer storage tank hydraulically upstream of the buffer storage tank.
After buffer: The primary controller/feed pump is arranged with existing
buffer storage tank hydraulically downstream of the buffer storage tank.
9.2.11 Boiler
Release below outside temp (2203)
The boiler is only put into operation if the mixed outside temperature is be­
low the threshold set here. The switching difference is 0.5°C.
Full charging buffer (2208)
Under prog. no. 4810 (full charging buffer storage tank) is selected, wheth­
er and when the buffer storage tank is fully charged despite automatic
generator lock. Under prog.no. 2203 it is set whether the boiler takes part
in the full charging or not.
Off: The boiler does not take part in the full charging of the buffer stor­
age tank.
On: The boiler takes part in the full charging of the buffer storage tank.
Setpoint min (2210) andSetpoint max (2212)
As a protection function the boiler temperature setpoint can be limited be­
low by the minimum setpoint (prog.no. 2210) and above by the maximum
setpoint (prog.no. 2212).
Setpoint manual control (2214)
Temperature to which the boiler is controlled in manual control mode.
Burner running time min (2241)
Here, the period following the commissioning of the burner is selected dur­
ing which the shutdown differential is increased by 50%. However, this
setting cannot guarantee that the burner remains operational for the selec­
ted period.
Burner off time min (2243)
The boiler minimum pause time only takes effect between heating require­
ments coming following in sequence. The boiler minimum pause time
blocks the boiler for a set time.
SD burner off time (2245)
When a switching difference is exceeded,Burner off time min (prog. no.
2243) is aborted. The boiler starts despite pausing time.
Pump overrun time (2250) andPump overr time after HW
(2253)
The delay times of the pumps are controlled according to heating mode or
drinking water mode.
Boiler pump on heat gen lock (2301)
Stop of boiler pump in case of activated manual heat generation lock (e.g.
via H1).
Off: Switching off not activated
9 Settings
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