52
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
Id
Param-
eter
Parameter
Description
Range
Default
Custom-
ised value
t7
Display
lighting
Establishes the display lighting mode.
0 :
the display lights up during use and lowers after 15 seconds of inactivity.
In the case of anomaly the display flashes.
1 :
display lighting off.
2 :
the display is always lit up.
0 - 2
0
t8
Display
Establishes what the indicator displays 19 (Fig. 34)
.
"Summer" mode:
0: the indicator is always off
1: pump active displays the flow temperature,
pump off the indicator is off
"Winter" mode:
0: always displays the value set on the CH selector
1: pump active displays the flow temperature,
pump off always displays the value set on the CH selector
0 - 1
1
t9
Flow off
temperature
increase
Increases the flow off temperature at ignition only in the first 60 seconds.
After the flame is detected, the temperature is increased by t9
0 - 15
0
Id
Param-
eter
Parameter
Description
Range
Default
C u s t o m -
ised value
A0
Hydraulic
model
Defines the type of hydraulics in the boiler (0 = instant; 1 = storage tank)
0 - 1
0
A1
Maximum
pump speed
Defines the maximum operating speed of the circulator
(If A1 = A2 circulator operating at set speed)
A2 - 9
9
A2
Minimum
pump speed Defines the minimum operating speed of the circulator
1 - A1
6
A3
Pump
operating
mode
Sets the pump operating mode
- DELTA T = 0: proportional head (see parag. 1.28-1.29)
- DELTA T = 5
-
25 K: ∆T constant (see Parag. 1.28-1.29)
0 - 25
15
A4
Storage tank
flow offset
Establishes the temperature to be added to the DHW set-point to calculate
the flow set to heat the storage tank (only useful with a coupled storage
tank and parameter A0=1).
5 - 50 °C
25
A5
Storage tank
activation
offset
Temperature value to be subtracted from the DHW set-point to calculate the
boiler ignition to heat the storage tank (only useful with a coupled storage
tank and parameter A0=1).
0 - 15 °C
3
A6
DHW
thermostat
Establishes the switch-off method in DHW mode.
0 Fixed: the switch-off temperature is fixed at the maximum value regardless
of the value set on the control panel.
1 Correlated: the boiler switches off according to the temperature set.
0 - 1
0
Id
Param-
eter
Parameter
Description
Range
Default
Custom-
ised value
S0
DHW mini-
mum no. of fan
revs
Defines the operating speed of the fan at minimum DHW output
20 - 60
(x 50 = RPM)
27 (G20)
26 (G31)
27 (G230)
S1
DHW
maximum no.
of fan revs
Defines the operating speed of the fan at maximum DHW output
S0 - 140
(x 50 = RPM)
121 (G20)
115 (G31)
122 (G230)
S2
Ignition phase
no. of fan revs Defines the operating speed of the fan during the ignition phase
40 - 80
(x 50 = RPM)
56 (G20)
56 (G31)
56 (G230)