MainFour
Gas wall hung compact boilers
Compact dimensions Compactness and easiness of use MainFour, can be easily fitted in a cupboard thanks to its compact dimensions (730x400x299). MainFour is available in fanned flue and open flue versions with an output of 24 kW. The wide LCD display and digital push-buttons enable to show immediately all the information required.
2
MAINFOUR 240F
combi, fanned flue
24 kW
24
combi, open flue
24 kW
MainFour
• Compact dimensions • Digital control panel with LCD display and push-buttons • Bi-thermic rapid heat exchanger • Anti-scale electronic system • Full anti-frost device • Connection to Baxi solar system option
The new digital control panel with LCD display and push-buttons, make the boiler’s working check easy and immediate: clear and simple symbols allow to show all boiler’s parameters and anomalies that may occur
Combi
Hydraulic systems
Steel burner Bi-thermic rapid heat exchanger made of copper pipes protected with anticorrosion coating Automatic by-pass System to prevent pump sticking operating every 24 hours Central heating relief valve set at 3 bar
Thermoregulation system
Two heating temperatures possible ranges: 35/80°C, 30/45°C Built-in climatic regulation (outdoor sensor available as optional)
Control system
Overheat limit thermostat for the water/flue exchanger Hydraulic pressure switch to prevent boiler’s operating in event of low water Pressure switch to ensure safe discharge of flue products (240F model) Flue thermostat to ensure safe discharge of flue products (24 model) Electronic temperatures control by NTC sensors Full anti-frost device Anti-scale electronic system Electronic thermometer Central heating pressure gauge
Fanned flue
Open flue
Maximum heat input kW Minimum heat input kW Maximum heat output kW Minimum heat output kW
240F
24
25,8 10,6 24 9,3
26,3 10,6 24 9,3
Maximum efficiency % Energetic efficiency (92/42/CEE) Efficiency at 30% % Minimum working temperature °C Expansion vessel capacity/pre-charge l/bar Heating system max pressure bar Regulation of water temperature in heating circuit °C Regulation of water temperature in DHW circuit °C DHW production ∆T 25°C l/min
92,9 90,2 -5 6/0,5 3 35/80 30/45 35/55 13,7
90,6 89,3 -5 6/0,5 3 35/80 30/45 35/55 13,7
Minimum capacity DHW flow rate Minimum pressure on DHW circuit Maximum pressure on DHW circuit Flue tube Coaxial flue system Ø 60/100 max length Dual flue system Ø 80 max length Maximum flue mass flow rate Minimum flue mass flow rate Maximum flue temperature
2 0,15 8 - 5 30 0,016 0,016 149
2 0,15 8 120 0,021 0,018 120
l/min bar bar Ø mm m m kg/s kg/s °C
Dimensions (h x w x d) mm Net weight kg Gas type Power consumption W Grade of protection
730x400x299 31 29 Natural gas/LPG Natural gas/LPG 130 130 IPX5D IPX5D
3
MainFour 240F, 24
Fanned flue
5,5 5 4,5 4 3,5 3
400 162
122
Ø100
Ø120
2,5 2
A 23
A 23
1,5
600
800
1000
1200
B 680
400
730
200
B 680
FLOW RATE (l/h)
Flue systems
70
65
65
65
65
70 70
MR Heating system fl ow G 3/4” US DHW outlet G 1/2” GAS Gas inlet G 3/4” ES Mains water G 1/2” RR Heating system return G 3/4”
Front view
400
299
Fanned flue Coaxial flue system
97
97
299
Front view
=
130
=
Separate ducts
Front view
=
299
400
Max length without terminal (m) Coaxial duct
122
97
=
400
Length reduction with a 90° bend insertion (m)
Length reduction with a 45° bend insertion (m)
Flue discharge Ø (mm) 60-100
5
1
0,5
installation with wind proof terminal
30
0,5
0,25
80
installation with chimney terminal
15
0,5
0,25
133
14001 - O H SA
Quality Environment Safety
-I
70
A: Boiler hanging points. Distance between hanging points: 343 mm B: Distance between hanging points and hydraulic connection
97
145
130
120
114
400
S 18001
9001
65
Dual flue system 122
100
ISO
65
162
ø 120
SO
65
9 14 5,5 2,5
9 14 5,5 2,5
Open flue
65
120
0
730
1 0,5 0
145
HEAD (mH2O)
Open flue
400
6
Quality Environment Safety are Baxi strategic aims and the awarded certifications ensure compliance with the specific regulations
www.baxi.it
36061 BASSANO DEL GRAPPA (VI) Italy Via Trozzetti, 20 Tel. +39 0424 517111 - Fax: +39 0424 38089 marketing@baxi.it The Company assumes no responsibility for any possible contents mistakes, and reserves the right to make changes in products, due to technical or commercial demands, at any time without notice. Baxi S.p.A. 12-09 (E)