Atag XL110 - Page 35

Installation & Servicing instructions ATAG XL
35
0-10Volt
Open-
Therm
On/Off
T3
DHW
1 2 3 4 5 6 7 8 9 10 11 12 13 14
T10
General
purpose
LWCO
T4
Out
Figure 8.1.c
3. 0-10 Volt-control
At a heat demand of the 0-10 Volt controller a signal is sent out and varies from 0-10 Volt.
ThissignalistranslatedbytheATAGXLtoasetvalue(desiredowwatertemperature
or load) which is send via the ATAG data bus to the boiler(s). Depending on the Voltage
the set value becomes higher or lower.
The 0-10 Volt-controller must be connected to terminal 3, position 9 and 10.
The choice for temperature or load control can be done by a paramter setting.
Go to Setting level and Param. Chapter, than to Cascade Param. and select P101.
When P101 is adjusted to 1 the load control is set. On that moment P205 until P210 in
chapterCascadeParam.isreleasedandcanbeadjustedaccordingtospecicrequests.
When P101 is adjusted to 2 the temperature control is set. On that moment P215 until
P220inchapterCascadeParam.isreleasedandcanbeadjustedaccordingtospecic
requests.
See chapter 11 for the adjustment possibilities.
ADVICE: Choose temperature control for a more balanced boiler control
Behaviour of connected external controls
- When using an OpenTherm or 0-10Volt control and a clock program is selected, the
clock program of the XL will be ignored.
- Whenanon/o󰀨controlisconnectedandthethermostatisswitchedonmanuallybefore
the pre-set switch-on time, the clock program will be ignored and will run on the set
daytemperature.Whenswitchingo󰀨manuallytheclockprogramwillbefollowed.