Installation & Servicing instructions
AT
AG 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 flow 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 specific 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 specific
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/off 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 off manually the clock program will be followed.
