Ferroli BLUEHELIX TECH RRT 28 С Instructions For Use, Installation And Maintenance page 154

Room temperature adjustment (with optional room thermostat)
Using the room thermostat, set the temperature required in the rooms. If the room thermostat is not installed, the boiler
will keep the system at the set system delivery setpoint temperature.
Room temperature adjustment (with optional remote timer control)
Using the remote timer control, set the required temperature in the rooms. The boiler will adjust the system water ac-
cording to the required room temperature. For operation with remote timer control, please refer to the relevant instruc-
tion manual.
ECO/COMFORT selection
The unit has a function that ensures a high domestic hot water delivery speed and maximum comfort for the user. When
the device is activated (COMFORT mode), the water contained in the boiler is kept hot, therefore ensuring immediate
availability of hot water on opening the faucet, without waiting times.
The device can be deactivated by the user (ECO mode) by pressing the winter/summer/off button (detail 7 - fig. 1) for
5 seconds. In ECO mode the display activates the ECO symbol (detail 12 - fig. 1). To activate the COMFORT mode,
press the winter/summer/off button again (detail 7 - fig. 1) for 5 seconds.
Sliding Temperature
When the optional external probe is installed the boiler adjustment system works with "Sliding Temperature". In this
mode, the heating system temperature is regulated according to weather conditions, to ensure the high comfort and
energy efficiency throughout the year. In particular, as the outside temperature increases the system delivery temper-
ature decreases according to a specific "compensation curve".
With the Sliding Temperature adjustment, the temperature set with the heating buttons (detail 3 - fig. 1) becomes the
maximum system delivery temperature. It is advisable to set a maximum value to allow system adjustment throughout
its useful operating range.
The boiler must be adjusted at the time of installation by qualified personnel. However, the user can make any further
adjustments necessary to optimise comfort levels.
Compensation curve and curve offset
Press the reset button (detail 6 - fig. 1) for 5 seconds to access the "Sliding temperature" menu; the display shows "CU"
flashing.
Use the DHW buttons (detail 1 - fig. 1) to adjust the desired curve from 1 to 10 according to the characteristic (fig. 13).
By setting the curve to 0, the sliding temperature adjustment is disabled.
Press the heating buttons (detail 3 - fig. 1) to access parallel curve offset; the display shows "OF" flashing. Use the DHW
buttons (detail 1 - fig. 1) to adjust parallel curve offset according to the characteristic (fig. 14).
Press the reset button (detail 6 - fig. 1) again for 5 seconds to exit the "Sliding Temperature" menu.
If the room temperature is lower than the required value, it is advisable to set a higher order curve and vice versa. Pro-
ceed by increasing or decreasing in steps of one and check the result in the room.
154
BLUEHELIX TECH RRT 28 C
90
10 9
85
80
70
60
50
40
30
20
20 10
fig. 13 - Compensation curves
cod. 3541N260 - Rev. 01 - 10/2017
8 7 6
5
4
3
2
1
0 -10 -20
EN