Time of day - Hour
Heating circuit pressure (bar)
External temperature (°C)
-only with external sensor connected
Room temperature (°C)
- only active when the BUS device is connected
D.H.W. Flow rate (l/m)
Set C.H. temperature (°C)
Set D.H.W. temperature (°C)
Month until next maintenance
Technical Assistance Centre telephone number and name
(only display if setted parameters 890)
D.H.W. comfort temperature (°C) - if activated
SRA Function
- “enabled” or “disabled”
Storage temperature °C
- only for boiler with storage
SRA function
This is a function which enables the boiler to automatically adapt its
operation routine (the temperature of the heating elements) in line
with the outdoor conditions, in order to achieve and maintain the re-
quested room temperature conditions.
Depending on the peripheral units connected and the number of zones
controlled, the boiler adjusts its ow temperature automatically.
The various corresponding parameters should therefore be set (see
adjustments menu).
To activate the function, press the SRA button.
For further information please refer to the CHAFFOTEAUX temperatu-
re adjustment manual.
Example 1:
S
InglE zOnE SyStEM (hIgh-tEMpEraturE) wIth On/Off rOOM thErMOStat:
In this case the following parameters must be set:
4 21 - Activation of temperature adjustment using sensors
- Select 1 = Basic temperature adjustment
2 44 - Boost Time (optional)
The wait time for the ow temperature increase in steps of 4°C
may be set. The value varies according to the type of system
and installation.
If the Boost Time value = 00 the function is not activated.
Example 2:
S
InglE zOnE SyStEM (hIgh-tEMpEraturE) wIth On/Off rOOM thErMOStat + OutDOOr
SEnSOr:
In this case the following parameters must be set:
4 21 - Activation of temperature adjustment using sensors
- Select 3 = outdoor sensor only
4 22 -
Temperature adjustment curve selection
- Select the relevant curve according to the type of system,
installation, heat insulation used in the building, etc.
4 23 - Perform a parallel curve shift if necessary, increasing or
decreasing the set-point temperature (this may also be
modied by the user, using the heating temperature
adjustment knob, which, with the Auto function activated, is
used to shift the curve in a parallel manner).
Example 3:
S
InglE zOnE SyStEM (hIgh-tEMpEraturE) wIth rEMOCOn rEMOtE COntrOl +
OutDOOr SEnSOr
In this case the following parameters must be set:
4 21 - Activation of temperature adjustment using sensors
- select 4 = outdoor sensor + room sensor
4 22 -
Temperature adjustment curve selection
- Select the relevant curve according to the type of system,
installation, heat insulation used in the building, etc
4 23 - Perform a parallel curve shift if necessary, increasing or
decreasing the set-point temperature. (This may also be
changed by the user by the encoder which, with the Auto
function activated, is used to shift the curve in a parallel
manner.)
4 24 - Inuence of room sensor
- used to adjust the inuence the room temperature has on the
calculation of the set-point ow temperature (20 = maximum,
0 = minimum).