Installation, use and maintenance guide
PIDRA 18
Page
30
ENG
ATTENTION: If the programmed time schedule is enabled (a clock symbol appears on the display) the appliance will
follow exclusively the preset ON and OFF times. No request for heat from the boiler or system will be considered by the
appliance outside the programmed time interval and the texts WAIT TIME or NO PROGRAM will appear on the display.
ATTENTION: If an external chronothermostat is connected to the appliance, the appliance will follow it exclusively. No
request for heat from the boiler tube or system will be considered by the appliance if the external chronothermostat
does not give consent and the text WAIT TIME appears on the display.
When
ACS ON
is activated the shower symbol with the temperature detected by the sensor will appear on the display. The shower
symbol will flash if the boiler tube requesting heat, whereas it will remain steady if the boiler tube is satisfied.
When is it important to use the THERMO ACS function?
In systems configured like the nearby diagram, where the appliance is connected
directly to a domestic hot water boiler tube and to the system.
When using this function the generator starts up automatically when the boiler tube is
running out of heat. Once the boiler tube is satisfied, the appliance switches the 3-way
valve to provide heat to the system.
We recommend installing a chronothermostat to prevent the appliance from being
stressed by uncontrolled ON and OFF cycles.
When is it important to use the THERMO ACS function together with the
THERMOCONTROL function?
In systems configured like the nearby diagram, where the appliance is installed in a
system fitted with both a boiler tube and a puffer.
Activate the THERMOCONTROL function to control the puffer and the THERMO
ACS function to control the boiler tube. With this logic the appliance controls the
ON/OFF cycles automatically according to the heat requests from both the puffer and
the boiler tube. Precedence is always given to the boiler tube, and once satisfied, the
appliance switches the 3-way valve and diverts the heat to the puffer and when it is
satisfied it switches OFF.
