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When the boiler is turned off, the printed circuit board
is still powered. Domestic hot water and heating are
disabled. The frost protection system remains activat-
ed. To operate the boiler normally, press the winter/
summer/off button (detail 7 - fig. 1) twice.
The boiler will be immediately ready.
B
The frost protection system does not work when the power and/or gas to the unit are turned off. In winter to
avoid damage to the entire system caused by freezing during long periods of shutdown, it is advisable to fit an
external frost protection kit..
NOTE - If the sun symbol does not appear on the display but the multifunction numbers are present, the boiler is
in"Winter" mode.
1.4 Adjustments
Heating temperature adjustment
Use the heating buttons (details 3 and 4 - fig. 1) to ad-
just the temperature from a min. of 20°C to a max. of
75°C.
Room temperature adjustment (with optional room thermostat)
Using a room thermostat, or programmable room thermostat set the temperature required in the rooms. (The
use of a room thermostat / programmable thermostat is mandatory as per the Building regulations part L).
Room temperature & time adjustment (with optional room thermostat)
Using the remote timer control, set the required temperature in the rooms. The boiler will adjust the system water according
to the required room temperature. For operation with remote timer control, please refer to the relevant instruction manual.
6
BLUEHELIX TECH RRT
cod. 3541P151 - Rev. 00 - 11/2018
18S / 24S / 30S
fig. 8
fig. 9
EN
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