eta T2-BT Configuration

Configuration parameter [Aux.boiler] function block
29
5.6 [Aux.boiler] function block
Parameters to be set
Set or check the following parameters.
Explanation of [Lin y1] and [Lin y2] for auxiliary
boiler's output set point
Optional: only for option [Requested aux. boiler
output].
With this option, the ETAtouch controller specifies
the required output with an analogue signal (0-
10 V).
The [Lin y1] parameter is used to set the required
auxiliary boiler output for the weakest signal and [Lin
y2] is used for the output for the strongest signal.
Explanation of [Rated output]
Set the rated output on the basis of the auxiliary
boiler's type plate.
Explanation of [Locking]
This parameter specifies whether the auxiliary boiler
and the ETA boiler may be in operation simultaneously.
With the [No] setting, the auxiliary boiler and the ETA
boiler may be in operation simultaneously.
With the setting [Yes], the auxiliary boiler will be
blocked as soon as the ETA boiler is supplying
heat. With this setting, you also need to set the
parameter to [Lock aux. boiler] in the ETA boiler's [Yes]
function block.
Explanation of [Min. runtime]
This parameter is used to set the minimum duration for
auxiliary boiler operation when the ETAtouch controller
demands it.
Explanation of [Start lag]
This parameter is used to set the duration of a delay in
the operation of the auxiliary boiler after the ETA
control system has demanded it.
If there is still a demand by the ETA control system
after this period ends, then the auxiliary boiler will
begin operation.
Explanation of [Boiler order]
Optional: only for multiple auxiliary boilers
If more than one auxiliary boiler is installed, the priority
of each of them is set with this parameter. It can be
given a setting from 1 (highest) to 4 (lowest).
Outputs
Target output
a
a. Only visible with option [Requested aux. boiler output].
Lin output
Lin y1
Lin y2
Aux.boiler
Settings
Rated output
Locking
Min. runtime
Start lag
Boiler order
AuxBoilerTemp
AuxBoilerMax
Aux.boiler charging pump
b
b. Only visible with option [Aux.boiler charging pump].
Enable AuxBoilChargePump
Thermostat diff.
Hysteresis
Return
c
Return riser valve
MixValve runtime
c. Only visible with option [Aux.boiler charging pump] and
[Return riser valve].

eta T2-BT Specifications

General

Brand	eta
Model	T2-BT
Category	Control Panel
Language	English