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• Menu sequence and structure
3110086 EHC20 UK 110515
6.4.10 Pressure control
The relay switches on if the pressure drops below a minimum or exceeds a maximum.
Setting range: On, Off / default: Off
6.4.10.1 Pressure control
In this menu, you can enable system pressure control via a direct sensor. As soon as the set pressure conditions are
exceeded, the set relay will switch on.
6.4.10.2 RPS1 / RPS2
Pressure sensor model
In this menu, you can set the type of pressure sensor used.
Please note: If, for example, VFS1 is connected, RPS1 will be hidden.
Setting range: Off; 0-0.6 bar; 0-1 bar; 0-1.6 bar; 0-2.5 bar; 0-4 bar; 0-6 bar; 0-10 bar
Default: Off
6.4.10.3 Pmin
Minimum pressure in the system. If this pressure drops below, the controller will issue an error message and the relay
will switch (hysteresis: 0.5 bar).
Setting range: Off; 0.0 to 10 bar
Default: Off
6.4.10.4 Pmax
Maximum pressure in the system. If this pressure is exceeded, the controller will issue an error message and the relay
will switch (hysteresis: 0.5 bar).
Setting range: Off; 0.0 to 10 bar
Default: Off
6.4.11 Booster pump
An additional pump which fills the system at the start of each solar charge.
6.4.11.1 Filling time
Duration of pump operation
Determines for how long the pump should fill the system after being triggered.
Setting range: 0 - 120 seconds / default: 30 seconds
6.4.12 Parallel operation R (X)
The relay operates at the same time as the set relay R1 or R2.
Setting range: On, Off
6.4.12.1 Delay
In this menu, you can specify how long after starting R1 or R2 the system waits until the relay operating in parallel starts.
Setting range: 0 - 120 seconds / default: 30 seconds
