eta HACK User Manual

Configuration parameter [Aux.boiler] function block
49
6.7 [Aux.boiler] function block
Parameters to be set
Set or check the following parameters.
Detailed descriptions of the parameters are provided
below.
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 simultaneous-
ly. 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.
Outputs
Target output
a
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
Enable AuxBoilChargePump
Thermostat diff.
Hysteresis
Div. valve aux. boiler
c
Enable diverter valve
Hysteresis
Switch priority
Return
d
Return riser valve
MixValve runtime
a. Only visible with [Requested aux. boiler output] option.
b. Only visible with [Aux.boiler charging pump] option.
c. Only visible with [Diverter valve] option.
d. Only visible with option [Aux.boiler charging pump] and
[Return riser valve].

eta HACK Specifications

General

Brand	eta
Model	HACK
Category	Boiler
Language	English