4
2 TECHNICAL DATA
DESCRIPTION
UM
25 KIS
30 KIS
G20
G31
G20
G31
Heating
Nominal heat input (***)
kW-kcal/h
20,00-17.200
25,00-21.500
Nominal heat output (80°/60°)
kW-kcal/h
19,38-16.667
24,38-20,963
Nominal heat output (50°/30°)
kW-kcal/h
20,92-17.991
26,78-23,027
Reduced heat input
kW-kcal/h
3,10-2.666
5,00-4.300
3,95-3.397
5,00-4.300
Reduced heat output (80°/60°)
kW-kcal/h
2,94-
2.525
4,80-4.128
3,79-3.261
4,81-4.132
Reduced heat output (50°/30°)
kW-kcal/h
3,04-2.613
5,11-4.395
4,09-3.519
5,10-4.382
Nominal Range Rated heat input (Qn)
kW-kcal/h
20,00-17.200
25,00-21.500
Minimum Range Rated heat input (Qm)
kW-kcal/h
8,20-7.052
8,20-7.052
12,00-10.320
12,00-10.320
DHW
Nominal heat input (***)
kW-kcal/h
25,00-21.500
30,00-25.800
Nominal heat output (*)
kW-kcal/h
25,00-21.500
30,00-25.800
Reduced heat input
kW-kcal/h
3,10-2.666
5,00-4.300
3,95-3.397
5,00-4.300
Reduced heat output (*)
kW-kcal/h
3,10-2.666
5,00-4.300
3,95-3.397
5,00-4.300
Useful efficiency Pn max - Pn min (80°/60°)
%
96,9-94,7
97,5-96,0
Combustion efficiency
%
97,2
97,7
Useful efficiency Pn max - Pn min (50°/30°)
%
104,6-98,0
107,1-103,6
Useful efficiency Pn max 30% (30° return)
%
109,1
108,8
Efficiency at average P Range Rated (80°/60°)
%
97,0
97,3
Efficiency at average P Range Rated 30% (30° return)
%
109,3
109,0
Overall electric output (max CH-DHW output)
W
62 - 95
85 - 102
Circulator electric power (1.000 l/h)
W
42
42
Category ● Country of destination
II2H3P
●
(+)
II2HY203P
●
(+)
II2H3P
●
(+)
II2HY203P
●
(+)
Voltage supply
V-Hz
230-50
230-50
Protection level
IP
X5D
X5D
Stop loss
W
30
32
Losses at the flue with burner off - burner on
%
0,09-2,80
0,08-2,26
Heating operation
Maximum pressure
bar
3
3
Minimum pressure for standard operation
bar
0,25÷0,45
0,25÷0,45
Maximum temperature
°C
90
90
Selection field of heating water temperature
(Std/Low temp.)
°C
20÷80/20÷45
20÷80/20÷45
Pump: maximum head available
mbar
408
408
for system capacity
l/h
1.000
1.000
Membrane expansion tank
l
8
8
Expansion tank pre-loading (heating)
bar
1
1
DHW operation
Maximum pressure
bar
8
8
Minimum pressure
bar
0,5
0,5
Quantity of hot water with Δt 25° C
l/min
14,3
17,2
with Δt 30° C
l/min
11,9
14,3
with Δt 35° C
l/min
10,2
12,3
DHW minimum capacity
l/min
2
2
Selection field of domestic H
2
O temperature
°C
37-60
37-60
Flow regulator
l/min
10
12
Gas pressure
G20
G20.2
G31
G20
G20.2
G31
Nominal pressure natural gas (G20 - I2H)
mbar
20
-
-
20
-
-
Nominal pressure MTN-H (G20.2 - I2Y20)
mbar
-
20
-
-
20
-
Nominal pressure
LPG (G31 - I3P)
mbar
-
-
37
-
-
37
CH output
G20
G31
G20
G31
Air capacity
Nm
3
/h
24,298
24,819
30,372
31,024
Flue gas capacity
Nm
3
/h
26,304
26,370
32,880
32,963
Mass flue gas flow rate (max-min)
g/s
9,086-1,408
9,297-2,324
11,357-1,794
11,621-2,324
DHW output
G20
G31
G20
G31
Air capacity
Nm
3
/h
30,372
31,024
36,447
37,228
Flue gas capacity
Nm
3
/h
32,880
32,963
39,456
39,555
Mass flue gas flow rate (max-min)
g/s
11,357-1,408
11,621-2,324
13,629-1,794
13,946-2,324
Fan performance
Residual discharge head of concentric pipes 0.85 m
Pa
60
60
Residual discharge head of separate pipes 0.5 m
Pa
180
190
Residual discharge head of boiler without pipes
Pa
186
196
Nox
class 6
class 6
Emission values at maximum and minimum output (**)
G20
G31
G20
G31
Maximum
-Minimum
CO s.a.
less than
p.p.m.
140-10
140-30
150-10
150-20
CO
2
%
9,0-9,0
10,0-10,0
9,0-9,0
10,0-10,0
NOx s.a.
less than
p.p.m.
50-30
40-40
50-40
40-50
T flue gases
°C
77-64
81-63
70-
63
72-
60
(*) Average value between various hot water operation conditions.
(**) Check performed with concentric pipe Ø 60-100, length 0,85 m. - water temperature in CH 80-60°C - values measured with casing fully closed
(***) The rated heat input with gas G20.2 (I2Y20) undergoes a reduction:
- START 25 KIS: Qn heating=18kW; Qn DHW=23kW
- START 30 KIS: Qn heating=23kW; Qn DHW=27,5kW.
(+) The installation of this product is allowed only in the destination Countries contained in the data plate, regardless of the present translation language.
The data indicated must not be used to certify the system; for certification, use tha data indicated in the “System handbook” measured during first ignition.
