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9.5.19 Pump PC speed control
Menu: Expert menu > Settings > C: Prio./sec.prio > PC pump speed control
WARNING: risk of damage to system due to pump failure.
B If a pump with internal electronic circuitry is connected, deactivate the speed control
function on the programmer.
The speed control function improves the efficiency of the solar heating system by keeping the
temperature difference within the set cut-in temperature differential.
If connection R4 is used for the pump PC, it can not be controlled by the speed control function.
Setting range
On, Off
9.5.20 Pump PC modulation
Menu: Expert menu > Settings > C: Prio./sec.prio > PC pump modulation
This setting determines the minimum speed of the pump for the 2nd heat consumer.
If connection R4 is used for the pump PC, it can not be controlled by the speed control function.
Setting range
30 - 100 %
9.5.21 Pump PC/Valve DWUC operating mode
Menu: Expert menu > Settings > C: Prio./sec.prio > PC pump/DWUC valve operating mode
In Auto mode, the connected pump runs whenever the conditions for switching on are met. Selecting
the option On switches the pump on. Selecting the option Off deactivates the pump.
In Auto mode, the valve allows fluid to flow from I to II when the conditions for doing so are met. If the
option On is selected, the valve allows fluid to flow from I to II. If the option Off is selected, the valve
allows fluid to flow from I to III.
Setting range
Auto, On, Off
Default setting
on
Default setting
50 %
Default setting
Auto
6 720 644 593 (2010/04)
EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY)
New setting
New setting
New setting
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