Connecting An Outside Temperature Sensor - REMEHA Avanta Range 24c Installation & Service Manual

Terminal
Block X9
1
Outside sensor (red band) for direct boiler weather compensation
or when used in conjuction with a compatable Open Therm
2 control eg: Chronotherm or Celcia 20
3
4
5
Exist
links
6
7
8
fi g. 24 Wiring diagram outside temperature sensor
LT.AL.W7H.000.029e
75
60
40
20
-15 0
fi g. 25 Heat curve Remeha Avanta Plus
LT.AL.W7H.000.030
X9
Factory setting
10 20
Remeha Avanta Plus
If the DHW water temperature on the OpenTherm
be adjusted, then the Remeha Avanta Plus will supply water
at the temperature determined on the OpenTherm
maximum being set in the boiler.
OpenTherm is an industry standard modulating control avail-
®
able from several control manufacturers.

The Remeha Avanta Plus can therefore be controlled directly
by any other controls with this OpenTherm
2.7.5

Connecting an outside temperature sensor

An outside temperature sensor can be connected to connec-
tors 1 and 2 of the X9 terminal block.
The boiler will regulate the output using the set point of the
internal heat curve.
This can be set as follows:
- Outside temperature minimum set point = -15°C (adjustable
with parameter p29 to between 0 and -30°C)
- Outside temperature maximum set point = 20°C (adjustable
with parameter p28 to between 0 and 40°C)
- Flow temperature set point at maximum outside tempera-
ture = 20°C (adjustable with parameter p27 to between
0 and 60°C)
- Flow temperature set point at minimum outside temperature
= 20°C (adjustable with parameter p1 to between
20 and 85°C)

An outside sensor used in conjunction with a simple 230 V
time clock will provide easy to set up and operate - timed
weather compensation heating based on the above graph.
24
® control can
with the
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