37
INST
ALLER Section
(en)
7698967.01 (1-01/18)
BOILER PUMP PERFORMANCE
The maximum CH power cannot exceed the values below. Total system losses cannot exceed 2 m of H20 and the minimum flow
rate cannot be lower than 400 l/h.
CH power (kW)
Heating circuit flow
rate (l/h)
Minimum speed
head (m H
2
O)
Maximum speed
head (m H
2
O)
6
1032
-
2,7
5
860
2,5
3,3
4
688
3,3
4,2
3
516
4,5
4,7
∆
T=5 °K --- Flow temperature 35°C
CH power (kW)
Heating circuit flow
rate (l/h)
Minimum speed
head (m H
2
O)
Maximum speed
head (m H
2
O)
8
983
-
2,7
6
737
3,5
4
5
614
4
4,5
4
491
4,5
4,7
∆
T=7 °K --- Flow temperature 35°C
CH power (kW)
Heating circuit flow
rate (l/h)
Minimum speed
head (m H
2
O)
Maximum speed
head (m H
2
O)
12
1032
-
2,7
10
860
2,5
3,3
8
688
3,3
4,2
6
516
4,5
4,7
5
430
4,7
5
∆
T=10 °K --- Flow temperature 35°C
11.2.3 FAN SPEED SETTINGS (MAXIMUM POWER)
The maximum heating power of the boiler can be reduced to suit the requirements of the heating system it serves. A table
indicating fan speed values depending on the required maximum power output is shown below.
To access parameter
P30 (2441)
and modify the speed value, proceed as described in chapter 14.
Boiler model - Revs/min (rpm)
3.25
3.33
kW
G20
G31
G20
G31
11
3000
3000
-
-
12
3200
3200
-
-
14
3700
3600
3000
3000
16
4200
4100
3400
3200
18
-
-
3700
3500
20
-
-
4100
3800
22
-
-
4500
4200
24
-
-
4800
4500
11.2.4 EXTERNAL SENSOR
To connect this accessory, see figure to side (terminals
4
-
5
) and
the instructions supplied with the sensor.
With the External Sensor connected,
on the boiler
control panel move the set climate curve
Kt
in parallel (see
annex
"SECTION" E
and parameter
P03
in the table in section
14). To increase room temperature press
+
, to decrease press
-
.
SETTING THE "Kt" CLIMATE CURVE
To set the required kt climate curve, proceed as follows:
• Access the menu as described in section 14.
• Select parameter
P03
.
• Select the climate curve from among those available, see the curve chart in annex
"SECTION" E
at the end of this manual
(the preset curve is 1.5).
KEY TO CURVE CHART Kt -
"SECTION" E
Flow temp
Outside temp
