B
Product Fiche
Vortex Pro
Combi Models
Symbols
Unit
VTXOMCOMBI21
VTXOMCOMBI26
VTXOMCOMBI36
Condensing boiler
Yes
Yes
Yes
Low temperature boiler
No
No
No
B1 Boiler
No
No
No
Combination heater
Yes
Yes
Yes
Rated heat output
Prated
kW
21
26
36
Useful heat output
At rated heat output and high temperature regime
P4
kW
21
26
36
At 30% of rated heat output and low temperature regime
P1
kW
6.3
7.8
10.8
Auxiliary electricity consumption
At Full load
elmax
kW
0.158
0.13
0.15
At part load
elmin
kW
0.052
0.052
0.039
In standby mode
PSB
kW
0.009
0.009
0.009
Declared load profile
XL
XL
XL
Daily electricity consumption
Qelec
0.293
0.23
0.205
Annual electricity consumption
AEC
65.4
50.5
45.2
Useful efficiency
Seasonal space heating energy efficiency
ƞs
%
90.81
91.71
94.56
At rated heat output and high temperature regime
ƞ
4
%
88.9
93.6
95.1
At 30% of rated heat output and low temperature regime
ƞ
1
%
97.1
96.4
99.3
Other items
Standby heat loss
Pstby
kW
0.23
0.264
0.522
Ignition burner power consumption
Pign
kW
0
0
0
Annual energy consumption
QHE
kWh
-
-
-
Sound power level, indoors
LWA
dB
50.6
50.6
53.7
Emissions of nitrogen oxides
NOx
mg/ kWh
180.4
151.8
127.3
Emissions Class
2
2
2
Water heating efficiency
ƞ
wh
%
68.23
62.6
60.38
Daily fuel consumption
Qfuel
kWh
27.2
30
31.1
Annual fuel consumption
AFC
GJ
21.556
26.673
24.67
50
