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Gas 620 Ace 570 710 860 1000 1150 1300
Full load central heating ef
ficiency
Pn
(
Hs
) 70/50 °C % 88.7 88.7 88.8 88.8 88.9 88.9
Full load central heating ef
ficiency
Hs
50/30 °C % 94.4 94.8 95.1 95.5 95.9 96.2
Min load central heating ef
ficiency
Hs
Return tem
perature 60 °C
% 85.3 85.9 86.3 86.8 87.2 87.7
Part load central heating ef
ficiency
Pn
(
Hs
) Return
temperature
30 °C
% 98.4 98.2 98.0 97.8 97.6 97.4
(1) Factory setting
Tab.87 Gas and flue gas data
Gas 620 Ace 570 710 860 1000 1150 1300
Gas test pressure G20 mbar min
max
17
25
17
25
17
25
17
25
17
25
17
25
Gas inlet pressure G20 mbar max 30 30 100 100 100 30
Gas consumption G20 m3/h min
max
8.5
56.3
9.6
70.5
13.5
85.1
13.4
99.3
16.2
114.1
18.0
129.1
NOx annual emissions G20 O2 = 0%
(EN15502)
ppm 29 29 30 30 30 31
NOx annual emissions G20
Hi
(EN15502)
mg/kWh 47 48 49 50 51 52
NOx annual emissions G20
Hs
(EN15502)
mg/kWh 43 43 44 45 46 47
NOx annual emissions BREEAM
Hs
mg/kWh 15 16 16 17 18 18
BREEAM Credits 2 2 2 2 2 2
Flue gas amount kg/h min
max
135
896
153
1121
216
1354
214
1579
258
1815
286
2054
Flue gas temperature °C min
max
30
60
30
61
30
64
30
63
30
66
30
65
Maximum counter pressure
for flue gas outlet
Pa 130 120 130 150 150 150
Flue efficiency (
Hi
) 80/60 °C Am
bient temperature
20 °C
%
97.8 97.8 97.8 97.7 97.7 97.7
Flue losses (
Hi
) 80/60 °C Am
bient temperature
20 °C
%
2.2 2.2 2.2 2.3 2.3 2.3
Tab.88 Central heating circuit data
Gas 620 Ace 570 710 860 1000 1150 1300
Water content l 98 120 142 164 186 208
Water operating pressure bar min 0.8 0.8 0.8 0.8 0.8 0.8
Water operating pressure
PMS
bar max 7.0 7.0 7.0 7.0 7.0 7.0
Water temperature °C max 110 110 110 110 110 110
Operating temperature °C max 90 90 90 90 90 90
Water flow ΔT=11K m3/h max 40.8 51.2 61.8 72.2 83.1 94.1
Water flow at full load cen
tral heating
80/60 °C m3/h nom 22.2 27.8 33.6 39.2 45.1 51.0
Water flow at full load cen
tral heating
70/50 °C m3/h nom 22.6 28.3 34.1 39.8 45.8 51.9
Water flow at full load cen
tral heating
50/30 °C m3/h nom 24.0 30.2 36.6 42.8 49.4 56.1
12 Technical specifications
7734324 - v.06 - 01102021 89
89


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