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EXPERT MENU (FOR QUALIFIED TECHNICIANS ONLY)
6 720 644 593 (2010/04)
9.5.22 Valve DWU3 operating mode
Menu: Expert menu > Settings > C: Prio./sec.prio > DWU3 valve operating mode
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
.
9.5.23 Pump PD speed control
Menu: Expert menu > Settings > D: Ext. heat exchanger > PD pump speed control
The speed control function improves the efficiency of the solar heating system by keeping the
temperature difference within the set cut-in temperature differential.
9.5.24 Pump PD modulation
Menu: Expert menu > Settings > D: Ext. heat exchanger > PD pump modulation
This setting determines the minimum speed of the pump for the 2nd collector array.
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
Default setting
New setting
On, Off, Auto
Auto
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.
Setting range
Default setting
New setting
Off, On
on
Setting range
Default setting
New setting
30 - 100 %
50 %
Содержание Worcester TDS 300
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