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INTRODUCTION
EN
0020140122_02 - 05/13
3.2 Product
structure
3.2.1 M
onozone operation mode
T
he Monozone operation mode is compatible with:
- eBUS controllers range (VRT 392, VRT 392f, VRT 350, VRT 350f,
VRC 430, VRC 430f, VRC 470, VRC 470f)
- S
ystem and open vent boiler
I
t allows the controller to communicate with the traditional
230V zone valves and DHW storage cylinder. Information
about the heat required by the cylinder is communicated to
the heating appliance. The heating appliance (boiler) then
decides whether a hot water request has to be fulfilled and
sends a signal to position the 230V zone valves.
T
he initial start-up of the VR66 controls is carried out together
with the initial start-up of the boiler.
i
If a
VR65
is replaced by a
VR66
it has to be set on
monozone mode.
3.2.2
Priorities in boilers are de
fi
ned as follows:
Display
Meaning
0
Hot water priority
- The 3-port valve is in the heating or hot water position
depending on the operating mode.
- With 2-port valves, either the DHW valve or the CH valve is open,
both valves are closed on standby.
1
Enable mid position
- The 3-port valve is in the mid position for simultaneous heating
and hot water request, or in the heating or hot water position,
depending on the operating mode.
- With 2-port valves, both valves are open during simultaneous
heating and hot water request. Otherwise, only one valve is
always open and both valves are closed on standby.
2
Only heating mode (only for test
operation!)
- Only the CH valve is activated.
NOTE: Factory settings of boiler = 0 : hot water priority.
Содержание VR 66
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