8
2.2
Technical specifications datasheet
GENERAL
Product Identification Number
CE 0063 BS3806
Dimensions (h x w x d)
cm
161,7 x 73,6 x 122,5
Classification
II2H3P
Gas Appliance Type
B23, B23P; C13, C33, C43, C53, C63, C83
Type boiler
S-CB
+
400
S-CB
+
550
CH boiler water content
litres
30
43
Weight (empty)
kg
400
450
Connections flow/return
inches
R 2 ½"
Gas connection
inches
R 2"
Flue gas / air supply connection
1
mm
180-180
HEATING
Values min-max:
Nominal input (Net)
kW
50,0
– 400
68,0
– 550
Nominal input (gross) (G20, G25.3)
kW
55,4
– 444
75,5
– 611
Nominal input (gross) (G31)
kW
54,3
– 435
73,9
– 598
Nominal input (gross) (G30/G31)
kW
54,2
– 434
73,7
– 596
Nom. output 80/60°C
kW
48,3
– 386
66,1
– 535
Nom. output 50/30°C
kW
52,2
– 418
71,2
– 576
Nom. output 37/30°C
kW
54,1
– 433
73,7
– 597
Efficiency 40/30°C DIN4702-8
%
Up to 109,5
GAS CONSUMPTION
2
Gases according to EN437
Values min-max:
Natural gas
G25.3
m³
st
/h
6,0
– 48,1
8,2
– 66,2
Natural gas
G20
m³
st
/h
5,3
– 42,3
7,2
– 58,2
Propane gas G31
1
m³
st
/h
2,1
– 16,4
2,8
– 22,5
Butane/Propane (B/P) G30/G31
1
m³
st
/h
1,6
– 12,4
2,1
– 17,1
Gas supply pressure nominal
3
G25.3
mbar
25
G20
mbar
20
G31
2
mbar
30/37
G30/G31
2
mbar
50
NOTES
1
All boilers are supplied as twin pipe model.
2
Using propane, butane and B/P, maximum fan speed needs to be reduced (parameter P4BD)
3
Below a table is given in which the min. and max. gas supply pressures are listed according to
EN437:
p nominal [mbar]
p min [mbar]
p max [mbar]
G25.3
25
20
30
G20
20
17
25
G31
30
25
35
37
25
45
G30/G31
50
43
57
