Technical data

Functional description
34
Installation instructions VRC 470 0020116690_00
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
mixing circuit, the controller does not deactivate the
heating circuit pump in the mixing circuit.
HEATING 1 is always deactivated during cylinder
charging.
8.5.10 Setting the relay output for 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
With this function, you can use the controller to activate
the desired actuation of a cylinder charge pump (LP) or
circulation pump (ZP) for an implemented hydraulic
scheme. The setting "Not connected" means that the
output on the VR 61/2 is not used.
8.6 System configuration: Solar
8.6.1 Reading the value of the cylinder sensor SP2
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.
8.6.5 Reading the value of the TD2 sensor
Menu ¬ Installer level ¬ System configuration
[Solar----] ¬ Sensor TD2
Only with a connected VR 68/2
This function allows you to read the current measured
value of the TD2 cylinder sensor.
8.6.6 Reading the status of the multi relay
Menu ¬ Installer level ¬ System configuration
[Solar----] ¬ Status multi relay
Only with a connected VR 68/2
This function allows you to read the current status of
the multi relay (On, Off).