Technical Data; Natural Gas; Propane Lpg - Ferroli Optima 901 Installation Instructions Manual

Technical data

Nominal Heat Input D.H.W. & C.H. (gross)
Minimum Heat Input D.H.W. & C.H. (gross)
Nominal Heat Input D.H.W. & C.H. (net)
Minimum Heat Input D.H.W. & C.H. (net)
Nominal Heat Output D.H.W. & C.H.
Minimum Heat Output D.H.W. & C.H.
Gas rate
Maximum burner pressure
Minimum burner pressure
Injector manifold Ø
Pilot injector Ø
Dimensions (o/all)
Height
Width
Depth
Weight (net)
Weight (gross)
Electricity supply:
Fuse rating:
Mains
on P.C.B. in boiler
Electrical input
Domestic Hot Water flow:
(35 C rise)
Minimum Domestic Hot Water Flow
Maximum domestic cold water
Inlet pressure:
C.H. Safety valve pressure setting
C.H. Expansion vessel capacity
Min. heating circuit pressure
Max. heating circuit pressure
Low water pressure switch
Boiler water capacity:
Heating
Domestic hot water
Pipe connections:
Gas
Domestic cold water inlet
Domestic cold water outlet
Central heating flow
Central heating return
Pressure relief valve drain
Min. installation clearances. Sides:
Left hand
Right hand
Front
Min. height from worktop to base
4
901

NATURAL GAS

(G20)
34.8 kW
15.1 kW
31.3 kW
13.6 kW
27.9 kW
11.8 kW
3.3 m 3 S/h
15 mbar
3.5 mbar
1.15 mm
0.27 mm
1020 mm
480 mm
360 mm
51 kg
53 kg
230V - 50 Hz
3 Amp. (main fuse)
F2 Amp (Fast)
160 Watt
11.4 l/min.
2.5 l/min.
10,0 bar
3 bar
7 litre
0,8 bar
3.0 bar
0.4 bar
1.5 litre
0.5 litre
22 mm
15 mm
15 mm
22 mm
22 mm
15 mm
5 mm
5 mm
50 mm*
Notes:
* Access to the front of the boiler must be
(plus access for service)
200 mm
available for maintenance (min. 600 mm)

PROPANE LPG

(G31)
34.0 kW
14.8 kW
31.3 kW
13.6 kW
27.9 kW
11.8 kW
2.39 kg/h
34.5 mbar
6.9 mbar
0.72 mm
0.22 mm