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Main5

Gas wall hung ultra compact boilers


Ultra compact dimensions Compactness and easiness of use Main5 is the new range of combi Baxi boilers which can be easily fitted almost everywhere thanks to its very compact dimensions (700x400x299). The wide LCD display and digital push-buttons enable to show immediately all the information required. Particularly suitable for extreme weather conditions, Main 5 is endowed with the new electronic system GDC (Gas Detection Control). GDC system continuously monitors the combustion, ensuring operation in maximum safety and efficiency of the boiler.

MAIN5

2

24F

combi, fanned flue

18 kW

24 kW

18F

combi, fanned flue

18 kW

18 kW

14F

combi, fanned flue

14 kW

18 kW


Main5

Main5

• Ultra compact dimensions • Bi-thermic rapid heat exchanger • Able to safely work with a minimum gas pressure of 4 mbar and 170 V minimum supply voltage • Combustion control system (GDC) to guarantee the safe operation of the boiler even in case of combustion anomalies (flue obstruction, flue recirculation, etc.) • Easy access to the components, including the expansion vessel, thanks to the new structure and internal layout • Anti-scale electronic system • Anti-frost protection 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

18F

14F

Maximum heat input

kW

25,8

19,4

19,4

Minimum heat input

kW

10,6

10,6

10,6

Maximum heat output

kW

24

18

18

Minimum heat output

kW

9,3

9,3

9,3

Automatic by-pass

Maximum efficiency

%

92,9

92,8

90,7

System to prevent pump sticking operating every 24

Energetic efficiency (92/42/CEE)







90,2

90,3

90,1

Steel burner Bi-thermic rapid heat exchanger made of copper pipes protected with anticorrosion coating

hours

Efficiency at 30% Minimum working temperature

%

24F

°C

-5

-5

-5

l/bar

6/0,5

6/0,5

6/0,5

Central heating relief valve set at 3 bar

Expansion vessel capacity/pre-charge

Control system

Heating system max pressure

bar

3

3

3

Regulation of water temperature in heating circuit

°C

30/76

30/76

30/76

Combustion control system (GDC) Overheat limit thermostat for the water/flue exchanger Hydraulic pressure switch to prevent boiler’s operating in event of low water

Regulation of water temperature in DHW circuit

°C

35/55

35/55

35/55

DHW production ∆T 25°C

l/min

13,7

10,3

10,3

Minimum capacity DHW flow rate

l/min

2

2

2

Minimum pressure on DHW circuit

bar

0,15

0,15

0,15

Maximum pressure on DHW circuit

8

bar

8

8

Electronic temperatures control by NTC sensors

Coaxial flue system Ø 60/100 max length

m

5

5

5

Anti-frost protection of CH circuit

Dual flue system Ø 80 max length

m

30

30

30

Anti-scale electronic system Electronic thermometer Central heating pressure gauge

Flue mass flow rate at max

kg/s

0,016

0,014

0,014

Flue mass flow rate at min

kg/s

0,016

0,016

0,016

Flue temperature at max

°C

149

135

135

Dimensions (h x w x d)

mm

Net weight

kg

Gas type Power consumption Grade of protection

700x400x299 27

27

27

Natural gas/LPG W

110

110

110

IPX5D

IPX5D

IPX5D

3


Flow rate/head curve

Dimensions

Installation template

400 5,5 5 4,5 4 3,5 3

184

Ø100

2,5 2 1,5 1

0

200

400

600

800

1000

1200

1400

FLOW RATE (l/h)

700

0,5 0

29

9

Coaxial flue system

Dual flue system 184

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” A: Boiler hanging points.

120

400

299

Front view

Max length without terminal (m)

Length reduction with a 90° bend insertion (m)

Length reduction with a 45° bend insertion (m)

Flue discharge Ø (mm)

5

1

0,5

60-100

installation with wind proof terminal

30

0,5

0,25

80

installation with chimney terminal

9

0,5

0,25

133

Coaxial duct Separate ducts

-I

Quality Environment Safety

SA S 18001

9001

14001 - O H

SO

ISO

HEAD (mH2O)

6

Quality Environment Safety are Baxi strategic aims and the awarded certifications ensure compliance with the specific regulations

36061 BASSANO DEL GRAPPA (VI) Via Trozzetti, 20 marketing@baxi.it www.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. 01-13 (E)

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