100
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
3.13 SCREED HEATER
e appliance is equipped with a function to perform the thermal shock on new radiant panel systems, as required by the applicable
standard.
Contact the manufacturer of the radiant panels for the thermal shock characteristics and its correct execution.
To be able to activate the function there must be no remote control connected, while in case of system divided into zones it must
be properly connected, both hydraulically and electrically.
65
e function is activated from boiler in “o” by pressing and holding the “
”, “ ” and “ ” buttons for more than 5 seconds.
e function lasts in total 7 days, 3 days at the lower temperature set and 4 days at the higher temperature set (Fig. 66).
Aer activating the function, the lower set (range 20 ÷ 45 °C default = 25 °C) and the higher set (range 25 ÷ 55 °C default = 45 °C) appear in
sequence.
e temperature is selected by means of the buttons “
” and conrmed by pressing the button “ ”.
e display now shows the countdown of days alternated with the current ow temperature, as well as the normal operating symbols of
the boiler.
In case of failure or lack of supply voltage, the function is suspended and will resume when the normal operating conditions are reset
from the point where it was interrupted.
When the time expires, the boiler automatically goes back to “Stand-by” mode, the function can also be stopped by pressing the button “
”.
66
Key (Fig. 66):
(A) - Top set
(B) - Lower set
(C) - Days
TM - Flow temperature
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