Operation Manual

12
GTU C 330 16/09/2015 - 300017846-02
3. Technical description
 Display
024681012141618202224
A
bar
3 4 5 6 7
91011
8
2
1
BC
SUNDAY
1 Text and numerical display
2 Graphic display bar for the programme in circuit A, B or C
3 Light area: Reduced temperature heating period or tank load disabled
4 Dark area: Comfort temperature heating period or tank load enabled
5 Flashing cursor showing the current time
6 Number display (current time, adjusted values, parameters, etc.)
7 Number of the boiler for which the parameters are displayed
8 The arrows flash when setting values can be modified using the + and - keys
9 Circuit operation symbols
>
Opening the 3-way valve
=
Closing the 3-way valve
:
Displayed circuit pump on
A B C Name of the circuit displayed
10
Arrows indicating the chosen time programme (P1, P2, P3 or P4) for the circuit displayed, A, B,
C, or the activation of the manual summer mode
11 Symbols indicating that the following inputs/outputs are active

DHW load pump on
#
Summer mode (Automatic or Manual)
D
Burner on
D Burner on with 1 stage
Y
Burner on with 2 stages