Technical data

4
Linea 24 & 28
Central Heating output range
Max. 28.0 kW (95,563 Btu/h)
Min. 9.9 kW (33,788 Btu/h)
Designed temp rise 20°C
Max. flow temperature 85°C
Nominal hot water production
Temp. rise of 30°C 13.4l/min.
Temp. rise of 35°C 11.5l/min.
Gas Pressures
Max. gas pressure 10.1mbar (4.0in wg)
Min. gas pressure C/H 1.6mbar (0.6in wg)
Min. gas pressure H/W 1.3mbar (0.5in wg)
Gas Rate
Max. 3.27 m3/h 115.8 ft3/h
Min. 1.10 m3/h 39.0 ft3/h
Note: Use gross input values when gas rating
the appliance
Burner Details Main burner:
Polidoro type NP12
Main burner injectors 12 x 1.35
3.7 Working Pressure Heating System (All
models)
Maximum 1.5bar/15m w.g./50ft w.g.
Minimum 0.15bar/1.5m w.g./5ft w.g.
Safety valve setting 3bar/30m/102ft w.g.
3.8 Flow Rates (All models)
Min. waterflow (dhw) 2.0l/min. (0.45 gal/min)
Min central heating flow rate through appli-
ance 350litres/hr (1.28 gal/min)
3.9 Working Pressure Hot Water System Maxi-
mum 6.0 bar/90psig
Minimum 0.6 bar/7psig
For LPG instructions see page 57
3.10 Central Heating Pump Duty
Fig.3 indicates the flow rate available plotted
against system pressure drop.
N.B. When using this graph apply only the
pressure drop of the system. The curve has
been modified to allow for the pressure drop
through the appliance.
Fig. 3