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EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY)
9.5.5 Pump SP speed control
Menu: Expert menu > Settings > 1: Standard system > SP 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.
In systems with external heat exchanger and 2 heat consumers or systems with external heat
exchanger and 2nd collector array, pump SP is always run at 100 %.
Setting range
On, Off
9.5.6 Pump SP modulation
Menu: Expert menu > Settings > 1: Standard system > SP pump modulation
This setting determines the minimum speed of the solar system pump.
In systems with external heat exchanger and 2 heat consumers or systems with external heat
exchanger and 2nd collector array, pump SP is always run at 100 %.
The minimum pump speed of pumps SP and PD is always the same for the configurations 1-D or 1-BD.
If the setting for one of the pumps is changed, the programmer automatically alters the other to match.
Setting range
30 - 100 %
64
Default setting
on
Default setting
50 %
New setting
New setting
6 720 644 593 (2010/04)
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