Boiler type
Calenta
25s
28c
35s
40c
General
EC indentification no.
PIN
0063BT3444
Flow rate setting
Adjustable
Modulating, Start/Stop, 0 - 10 V
Nominal output (Pn)
Heating System (80/60 °C)
minimum-
maximum
kW
5,0 - 24,1
5,0 - 24,1
6,3 - 34,0
6,3 - 34,0
Factory setting
kW
24,1
19,4
34,0
23,3
Nominal output (Pn)
Heating System (50/30 °C)
minimum-
maximum
kW
5,6 - 25,5
5,6 - 25,5
7,0 - 35,9
7,0 - 35,9
Factory setting
kW
25,5
20,5
35,9
24,5
Nominal output (Pn)
DHW System
minimum-
maximum
kW
-
5,0 - 28,6
-
6,3 - 39,7
Factory setting
kW
-
28,6
-
39,7
Nominal input (Qn)
Heating System (Hi)
minimum-
maximum
kW
5,2 - 25,0
5,2 - 25,0
6,5 - 35,1
6,5 - 35,1
Factory setting
kW
25,0
20,1
35,1
24,0
Nominal input(Qn)
Heating System (Hs)
minimum-
maximum
kW
5,8 - 27,8
5,8 - 27,8
7,2 - 39,0
7,2 - 39,0
Factory setting
kW
27,8
22,3
39,0
26,7
Nominal input (Qnw)
DHW System (Hi)
minimum-
maximum
kW
-
5,2 - 28,0
-
6,5 - 38,8
Factory setting
kW
-
28,0
-
38,8
Nominal input (Qnw)
DHW System (Hs)
minimum-
maximum
kW
-
5,8 - 31,1
-
7,2 - 43,1
Factory setting
kW
-
31,1
-
43,1
Heating efficiency under full
load (Hi) (80/60 °C)
-
%
96,3
96,3
96,9
96,9
Heating efficiency under full
load (Hi) (50/30 °C)
-
%
102,0
102,0
102,2
102,2
Heating efficiency under
partial load (Hi) (Return
temperature 60°C)
-
%
96,1
96,1
96,3
96,3
Heating efficiency under
partial load (EN 92/42)
(Return temperature 30°C)
-
%
108,0
108,0
108,2
108,2
Data on the gases and combustion gases
Gas categories
-
I
2L3P
and I
2H
Gas inlet pressure G20 (Gas
H)
minimum-
maximum
mbar
17 - 30
Gas inlet pressure G25 (Gas
L)
minimum-
maximum
mbar
20 - 30
Gas inlet pressure G31
(Propane)
minimum-
maximum
mbar
30 - 50
Gas consumption G20 (Gas
H)
minimum-
maximum
m
3
/h
0,55 - 2,65
0,55 - 2,96
0,69 - 3,71
0,69 - 4,11
Gas consumption G25 (Gas
L)
minimum-
maximum
m
3
/h
0,64 - 3,08
0,64 - 3,45
0,80 - 4,32
0,80 - 4,78
Gas consumption G31
(Propane)
minimum-
maximum
m
3
/h
0,21 - 1,02
0,21 - 1,15
0,27 - 1,44
0,27 - 1,59
NOx-Emission per year (n =1)
mg/kWh
38
38
42
42
Mass flue gas flow rate
minimum-
maximum
kg/h
8,9 - 42,1
8,9 - 47,1
11,1 - 57,3
11,1 - 63,9
(1) Time needed as of the start of water draw-off to obtain an increase in temperature of 40K at the appliance's water outlet for the purposes of
installation calculation, based on the draw-off flow rate CW.
(2) The specific length of the pipe Ø 10/12 mm is the maximum uninsulated length, on the understanding that, in the most unfavourable summer
situation, the appliance will supply hot water in less than 30 s with a permanent increase in temperature of 35 ºC at the draw-off point in the
kitchen.
(3) Front panel removed
3. Technical description
Calenta 25s - 28c - 35s - 40c
18
040412 - 7600585-01
