78
INS
TALL
AT
O
RE
U
TENTE
MANU
TENT
O
RE
4
TECHNICAL DATA.
4.1 INDOOR UNIT VARIABLE THERMAL OUTPUT.
N.B.:
the power data in the table has been obtained with intake-ex-
haust pipe measuring 0.5 m in length. Gas flow rates refer to net
calorific value below a temperature of 15°C and at a pressure of
1013 mbar.
4.2 COMBUSTION PARAMETERS.
Combustion parameters: measuring conditions of useful efficien-
cy (flow temperature/return temperature= 80 / 60 °C), ambient
temperature reference = 15°C.
METHANE (G20)
PROPANE (G31)
HEAT
THERMAL
HEAT
THERMAL
MODULATION
GAS FLOW RATE BURNER
MODULATION
GAS FLOW RATE BURNER
(kW)
(kcal/h)
(%)
(m
3
/h)
(%)
(kg/h)
28.3
24295
D.H.W.
100
3.06
100
2.25
27.5
23650
97
2.98
97
2.19
26.5
22790
93
2.87
92
2.11
25.5
21930
89
2.76
88
2.03
24.1
20717
HEAT.
+
D.H.W.
84
2.61
82
1.91
23.5
20210
81
2.54
80
1.87
22.7
19542
78
2.46
75
1.81
21.5
18490
74
2.33
71
1.71
20.5
17630
70
2.22
67
1.63
19.5
16770
66
2.11
63
1.55
18.5
15910
62
2.01
59
1.47
17.5
15050
58
1.90
55
1.39
16.5
14190
54
1.79
51
1.31
15.5
13330
50
1.68
47
1.24
14.5
12470
45
1.58
42
1.16
13.5
11610
41
1.47
38
1.08
12.5
10750
37
1.36
34
1.00
11.5
9890
33
1.26
30
0.92
10.5
9030
29
1.15
26
0.84
9.5
8170
24
1.04
22
0.76
8.5
7310
20
0.93
18
0.68
7.5
6450
16
0.82
14
0.61
6.5
5590
11
0.72
10
0.53
5.5
4730
7
0.61
6
0.45
4.5
3870
2
0.50
2
0.37
4.3
3689
1
0.48
1
0.35
G20
G31
Supply pressure
mbar (mm H
2
O)
20 (204)
37 (377)
Gas nozzle diameter
mm
5.00
3.80
Flue flow rate at nominal heat output
kg/h (g/s)
44 (12.22) - 38 (10.56)
43 (11.94) - 37 (10.28)
Flue flow rate at min heat output
kg/h (g/s)
8 (2.22)
7 (1.94
CO
2
at Q. Nom./Acc./Min.
%
9.70 (+ 0.3 / - 0.1) / 8.80
(+ 0.1 / - 0.3)
11.40 (+ 0.10 / - 0.30) /
10.60 (± 0.20)
CO with 0% O
2
at Nom./Min. Q.
ppm
300 / 6
430 / 9
NO
X
with 0% O
2
at Nom./Min. Q.
mg/kWh
59 / 34
85 / 55
Flue temperature at nominal output
°C
70
70
Flue temperature at minimum output
°C
64
63
Max air combustion temperature
°C
50
50
Intake / exhaust available head 6050 revs
Pa
140
---
Intake / exhaust available head 6050 revs
Pa
200
---
Intake / exhaust available head 6300 revs
Pa
240
---
Intake / exhaust available head 5750 revs
Pa
---
140
Intake / exhaust available head 5750 revs
Pa
---
200
Intake / exhaust available head 6060 revs
Pa
---
240