Fourtech
Gas wall hung compact boilers
Ultra compact dimensions
Fourtech is the new Baxi boiler distinguished by ultra compact dimensions (730x400x299), easy installation and easiness of use. Fourtech is available in a wide range of models fanned ue or open ue, combi or heating only with an output up to 24 kW.
Fourtech
2
24 F
combi, fanned flue
24 kW
24
combi, open flue
24 kW
1.24 F heating only, fanned flue
24 kW
1.14 F heating only, fanned flue
14 kW
1.24
heating only, open flue
24 kW
1.14
heating only, open flue
14 kW
Fourtech
Fourtech is provided with a wide, back lighted LCD display and seven regulation/programming buttons which allow an easy interacting with the boiler. The dedicated button to enter info MODE grants an easy control of the main parameters. Settings of the boiler, such as: • gas conversion (Nat. gas/LPG) • regulation of the heating temperature range ( 30-85 or 30-45 °C) • stand- by time • activation of the solar function can be set directly from the control panel with no need to access the electronics (PCB). In case of connection with an indirect cylinder its temperature can be adjusted directly on the boiler’s control panel. Even the diagnostic is easy and sophisticated: registration and display of the latest anomaly is allowed.
LCD display, clear and immediate Burner lighted/lack of gas Central heating operation
CH water temperature regulation Anomaly general warning
Information
DHW operation
DHW temperature regulation Lack of water Need of Reset
On/Off -Winter/Summer selection Reset 3
Special electronics
High energy efficiency
Designed for hard environmental conditions, the new electronics (PCB) has been realized to guarantee the boiler functioning down to 170 V
Fourtech boilers, fanned flue models, have obtained the maximum energy efficiency achievable thanks to the new combustion chamber: 3 stars according to European 92/42/CEE
New flue exit system
Grade of protection
The standard 90° flue connection ensures an easier stock management of the flue accessories and an increased efficiency thanks to the new combustion chamber.
Connection to Baxi integrated solar systems Combi models are designed to be easily connected to Baxi integrated solar systems. Baxi has developed a special kit ( including diverter valve and thermostatic mixing valve) that diverts the solar water through the boiler or to the point of use, depending on the water temperature. It is suitable for hard water areas.
4
Temperature °C
Fourtech boilers have obtained the maximum achievable grade of protection against water
65 62,5 60 57,5 55 52,5 50 47,5 45 42,5 40 37,5 35 32,5 30 27,5 25 22,5 20 17,5 15 12,5 10 00:00:00
Flowmeter
00:00:30
00:01:00
00:01:30
00:02:00
00:02:30
00:03:00
Time
Flowmeter
ON-OFF sensor
00:03:30
Fourtech is provided with a modulating DHW priority sensor, flowmeter, that adjusts the boiler’s heat output according to the DHW amount for higher comfort and quicker reaction
Fourtech
Technical features • Digital control panel with wide LCD display • New compact hydraulic group with 3 way electric valve provided with metal bar for a safe installation • ★★★ Energy efficiency: the maximum achievable for fanned flue models • Connection to Baxi integrated solar systems option • Compact dimensions: 730x400x299 • Full anti-frost device • 3 way electric valve on the CH return circuit to protect the boiler from temperature shocks and heat peaks • Extractable filter on the CH return circuit to protect the primary exchanger from impurities • Connection to an indirect cylinder option (heating only models). The cylinder temperature can be regulated
directly on the boiler’s control panel • Sanitary flowmeter with turbine for a perfect modulation of the output according to the DHW demand • Electronic ignition and flame sensing device • IPX5D: the maximum archievable grade of protection against water • Easy maintenance: frontal access to all components
5
Heating only
Combi Fanned flue 24 F
Open flue
Fanned flue
Open flue
24
1.24 F
1.14 F
1.24
1.14
25,8
15,1
26,3
15,4 7,1
Maximum heat input
kW
25,8
26,3
Hydraulic system
Minimum heat input
kW
10,6
10,6
10,6
7,1
10,6
3 way electric valve Steel burner Primary exchanger made of copper pipes protected with anti-corrosion coating Stainless steel DHW heat exchanger Automatic by-pass Low energy circulating pump with automatic air vent System to prevent pump and 3 way electric valve operating every 24 hours. Central heating relief valve set at 3 bar
Maximum heat output
kW
24
24
24
14
24
14
Minimum heat output
kW
9,3
9,3
9,3
6,0
9,3
6,0
Maximum efficiency
%
92,93
91,20
92,93
92,50
91,20
90,90
´´´
´´
´´´
´´´
´´
´´
Efficiency at 30%
%
90,37
89,30
90,37
89,80
89,30
88,60
Minimum working temperature
°C
-5
-5
-5
-5
-5
-5
6/0,5
6/0,5
6/0,5
6/0,5
6/0,5
100
100
100
100
100
3
3
3
3
3
Thermoregulation system Two heating temperatures possible ranges: 30/85°C, 30/45°C Built-in climatic regulation (outdoor sensor available as optional)
Energetic efficiency (92/42/CEE)
Expansion vessel capacity/pre-charge Maximum capacity of the heating system
l/bar l
6/0,5 100
Heating system max pressure
bar
3
Regulation of water temperature in heating circuit
°C
30/45 30/85
30/45 30/85
30/45 30/85
30/45 30/85
30/45 30/85
30/45 30/85
Regulation of water temperature in DHW circuit
°C
30/60
35/60
5/60
5/60
5/60
5/60
Specific flow according to EN 625
l/min
10.7
10,7
-
-
-
-
DHW production ∆T 25°C
l/min
13,7
13,7
-
-
-
-
Control system
Minimum capacity DHW flow rate
l/min
2,0
2,0
-
-
-
-
Overheat limit thermostat to protect primary exchanger Hydraulic pressure switch to prevent boiler’s operating in event of low water Pressure switch to ensure safe discharge of flue products (fanned flue models) Flue thermostat to ensure safe discharge of flue products (open flue models) Manometer Electronic thermometer
Maximum pressure on DHW circuit
bar
8
8
-
-
-
-
Ø mm
-
120
-
-
120
110
Coaxial flue system Ø 60/100 max length
m
5
-
5
5
-
-
Dual flue system Ø 80 max length
m
30
-
30
30
-
-
Maximum flue mass flow rate
kg/s
0,014
0,020
0,014
0,012
0,020
0,014
Flue tube
Minimum flue mass flow rate
kg/s
0,014
0,018
0,014
0,012
0,018
0,013
Maximum flue temperature
°C
146
110
149
115
110
99
Dimensions (h x w x d)
mm
Net weight
Kg
33
29
32
28
26
IPX5D
IPX5D
IPX5D
IPX5D
IPX5D
730x400x299
Gas type Grade of protection
6
31
Natural gas/LPG IPX5D
Fourtech
Fanned Flue
Open flue
400
400
162
122 Ø100 A 23
Ø (D)
A 23
Fourtech 24F, 24, 1.24F, 1.14F, 1.24, 1.14 6
730 B 680
730
4 3,5 3
B 680
HEAD (mH2O)
5,5 5 4,5
2,5 2 1,5 1 0,5 0 0
200
400
600
800
1000
1200
FLOW RATE (l/h) 65 65
70
65
65
70 70
65 65
65
65
70
9 14 5,5 2,5
9 14 5,5 2,5
Flue systems Open flue 162
Front view
400
299
MR Heating system fl ow G 3/4” US DHW outlet G 1/2” (24F;24) GAS Gas inlet G 3/4” ES Mains water G 1/2” RR Heating system return G 3/4”
A Boiler hanging points. Distance between hanging points: 343 mm B Distance between hanging points and hydraulic connection D ø120mm: 24, 1.24 - ø110mm: 1.14
D ø120mm: 24, 1.24 - ø110mm: 1.14
Fanned flue Coaxial flue system
97
97
120
145
130
130
122
97
145
97
122
114
100
Dual flue system
120
ø (D)
Front view
400
299
Front view
=
=
=
400
Coaxial duct Separate ducts
=
299
400
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
100
installation with wind proof terminal
30
0,5
0,25
80
installation with chimney terminal
15
0,5
0,25
133
7
S 18001
-I ISO
Quality Environment Safety
SA
9001
14001 - O H
SO
Quality Environment Safety are Baxi strategic aims and the awarded certiďŹ cations ensure compliance with the speciďŹ c regulations
www.baxi.it www.baxigroup.com
36061 BASSANO DEL GRAPPA (VI) Italy Via Trozzetti, 20 Tel. +39 0424 517111 - Fax: +39 0424 38089 marketing@baxiinternational.com 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. 04-09 (E)