Ferroli BLUEHELIX HITECH RRT K 50 Instructions For Use, Installation & Maintenance page 304

Turning the boiler off and on
Changing from one mode to another is possible by repeatedly pressing the button
the sequence shown in fig. 11.
A ="Summer" mode - B = "Winter" mode - C = "Off" mode
To turn the boiler off, repeatedly press the button
1.2
bar
37
°C
OFF
A
When the boiler is turned off, the PCB is still powered. DHW and heating are disabled. The frost
protection system remains on. To relight the boiler, press the button
The boiler will be immediately ready in Winter and DHW mode.
The frost protection system does not work when the power
B
and/or gas to the unit are turned off. To avoid damage
caused by freezing during long shutdowns in winter, it is
advisable to drain all water from the boiler, the DHW circuit
and the heating system water; or drain just the DHW cir-
cuit and add a suitable antifreeze to the heating system,
as prescribed in sec. 2.3.
304
BLUEHELIX HITECH RRT K 50
until detail C of fig. 11 is displayed.
1.2
bar
29
°C
27
°C
B
fig. 11- Turning the boiler off
cod. 3541Z783 - Rev 00 - 03/2024
, following
1.2
bar
OFF
OFF
C
.
EN