Installation Instructions

Description of functions
Installation instructions VRC 470f 0020124645_00 33
8
When cylinder charging ends ("desired hot water tem-
perature" reached), the controller switches the boiler
off. The run-on time for the cylinder charge pump starts.
The controller automatically deactivates the cylinder
charge pump after the run-on time has elapsed.
If a VIH RL cylinder is connected and if the cylinder is
connected directly to the boiler, the function has no
effect.
8.5.9 Activating parallel charging (domestic hot
water cylinder and mixing circuit)
Menu ¬ Installer level ¬ System configuration
[Domestic hot water ----] ¬ Paral. cyl. charge
With this function, you can define, for the connected
mixing circuit, that the mixing circuit should continue to
be heated during charging of the domestic hot water
cylinder.
When parallel charging is enabled, the mixing circuit
continues to be supplied while the cylinder is being
charged. Provided there is a demand for heat in the mix-
ing circuit, the controller does not deactivate the heat-
ing circuit pump in the mixing circuit.
HEATING 1 is always deactivated during cylinder charg-
ing.
8.5.10 Setting the relay output for the cylinder
charge pump and circulation pump
Menu ¬ Installer level ¬ System configuration
[Domestic hot water ----] ¬ LP/ZP relay connection
Only with a connected VR 61/2
This function allows you to configure the LP/ZP output
on the VR 61/2. You can set the controller to operate a
cylinder charge pump (LP) or a circulation pump (ZP) as
required for the system configuration implemented. The
setting "Not connected" means that the output on the
VR 61/2 is not used.
8.6 System configuration: Solar
i
Does not apply in combination with a VMS
solar station.
8.6.1 Reading the value of the SP2 cylinder sensor
Menu ¬ Installer level ¬ System configuration
[Solar ----] ¬ Sensor cylinder 2
Only with a connected VR 68/2
This function allows you to read the current measured
value of the SP2 cylinder sensor.
8.6.2 Reading the value of the solar gain sensor
Menu ¬ Installer level ¬ System configuration
[Solar ----] ¬ Sensor solar gain
Only with a connected VR 68/2
This function allows you to read the current measured
value of the gain sensor.
8.6.3 Reading the status of the solar pump
Menu ¬ Installer level ¬ System configuration
[Solar ----] ¬ Status solar pump
Only with a connected VR 68/2
This function allows you to read the current status of
the solar pump (On, Off).
8.6.4 Reading the value of the TD1 sensor
Menu ¬ Installer level ¬ System configuration
[Solar ----] ¬ Sensor TD1
Only with a connected VR 68/2
This function allows you to read the current measured
value of the TD1 cylinder sensor.