Mainfour 01_10

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)