Baxi 424 Combi 2 User Manual page 10

3 Technical specifications
Tab.3 General
Rated heat input (Qn) for domestic hot water
Rated heat input (Qn) with domestic hot water tank
Rated heat input (Qn) for heating
Reduced heat input (Qn) 80/60 °C
Rated heat output (Pn) for domestic hot water
Rated heat output (Pn) with domestic hot water tank
Rated heat output (Pn) 80/60 °C for heating
Rated heat output (Pn) 50/30 °C for heating
Reduced heat output (Pn) 80/60 °C
Reduced heat output (Pn) 50/30 °C
Rated efficiency 50/30 °C (Hi)
Tab.4 Characteristics of the heating circuit
Maximum pressure
Minimum pressure
Temperature range for heating circuit
Water capacity of expansion vessel
Tab.5 Characteristics of the domestic water circuit
Minimum pressure
Maximum pressure
Minimum dynamic pressure
Minimum water flow
Specific flow (D)
Temperature range for domestic water circuit
Domestic water production with ΔT = 25 °C
Domestic water production with ΔT = 35 °C
Tab.6 Combustion characteristics
G20 gas consumption (Qmax)
G20 gas consumption (Qmax) with domestic hot water tank
G20 gas consumption (Qmin)
G31 propane gas consumption (Qmax)
G31 propane gas consumption (Qmin)
Diameter of separate discharge pipes
Diameter of coaxial discharge pipes
Flue gas mass flow rate (max)
Flue gas mass flow rate (max) with domestic hot water tank
Flue gas mass flow rate (min)
Tab.7 Electrical characteristics
Power supply voltage
Power supply frequency
Rated electric power
Rated electrical output with domestic hot water tank
10 400 Combi 2
424
kW 24.7
kW –
kW 20.6
kW 4.9
kW 24
kW –
kW 20
kW 21.8
kW 4.8
kW 5.2
% 105.8
424
bar 2.5
bar 0.5
°C 25 - 80 25 - 80
l 7
424
bar 0.8
bar 8.0
bar 0.15
l/min 2.0
l/min 11.5
°C 35 - 60 35 - 60
l/min 13.8
l/min 9.8
424
m /h 2.61
3
m /h –
3
m /h 0.52
3
–
kg/h
–
kg/h
mm 80/80
mm 60/100 60/100
kg/sec 0.011
kg/sec –
kg/sec 0.002
424
V 230
Hz 50
W 90
W –
430 424 LPG
30 24.7
- –
20.6 20.6
6.0 4.9
29.1 24
- –
20 20
21.8 21.8
5.8 4.8
6.3 5.2
105.8 105.8
430 424 LPG 430 LPG
2.5 2.5
0.5 0.5
25 - 80
7 7
430 424 LPG 430 LPG
0.8 0.8
8.0 8
0.15 0.15
2.0 2
14 11.5
35 - 60
16.7 13.8
11.9 9.8
430 424 LPG 430 LPG
3.17 2.61
- –
0.63 0.52
–
1.92
–
0.38
80/80 80/80
60/100
0.014 0.011
- –
0.003 0.002
430 424 LPG 430 LPG
230 230
50 50
90 90
- –
430 LPG
30
-
20.6
6
29.1
-
20
21.8
5.8
6.3
105.8
2.5
0.5
25 - 80
7
0.8
8
0.15
2
14
35 - 60
16.7
11.9
3.17
-
0.63
2.33
0.47
80/80
60/100
0.014
-
0.003
230
50
90
-