Piazzetta P963 THERMO Instructions For Installation, Use And Maintenance Manual page 29

Action
Operation of the external thermostat depends on the function that the
user selects through the programming menu under the item EXTERNAL
THERMOSTAT (see "PROGRAMMING").
If MODULATION has been selected, when the thermostat activates the
appliance promptly goes to minimum power, whereas if STAND-BY is
selected the appliance carries out a temporary shutdown phase which
lasts until the thermostat condition changes.
a
Take care because this is a "free" contact, with zero potential,
and therefore no live element should be connected.
Room thermostats, boiler or storage tank thermostats, free
contacts from control units or solar systems etc. can be
connected.
Action
This function is managed by the electronic control board; an output
signal is produced (relays, solenoid valves) upon reaching or exceeding
a temperature threshold that can be freely set by the user (see
"PROGRAMMING") under AUX THERMOSTAT.
a
IThis signal is at 230 V and must therefore be managed with
due precaution when connecting to other components to avoid
damage or dangerous situations. No indication is given on the
display.
EXTERNAL THERMOSTAT
Description
AUX THERMOSTAT
Description
H07027850 / DT2000931 – 01
Display
S T A N D - B Y
.
1 2 : 0 0 2 2
c
1
DT2040121-00
Display
DT2040113-00
29