24
INDUSTRIE
FALCON
5.04 Adjusting maximum output for central heating system
(fig. 25)
This adjustment must be carried out electronically using the “P3” adjustment screw starting with a cold central heating
system. Connect a pressure gauge to the pressure test point downstream of the gas valve. Rotate the temperature adjustment
screw to maximum then regulate the pressure to the value required, consulting the diagram (figs. 4 and 5 page 8).
Once this operation is complete, start up and shut down the burner two or three times using the thermostat. Check each
time that the pressure values remain as adjusted and that the burner ignites correctly. Otherwise
further adjustment is
necessary until the pressure remains stable on this value.
N.B.
- when carrying out this operation ensure that the boiler thermostat is set to maximum otherwise the adjustment
will not be accurate.
5.05 Adjusting central heating flow temperature
Central heating water temperature is adjusted by rotating the control knob (fig. 2 - part 63). Rotate the knob clockwise to
increase water temperature, anticlockwise to reduce water temperature. Temperature can be varied from a minimum of
30
°
C to a maximum of 85
°
C. However, we recommend not operating the boiler below 50
°
C.
5.06 Adjusting room temperature
(when a room thermostat is fitted)
Room temperature is controlled by positioning the room thermostat knob to the required value. The thermostat
automatically controls the boiler, temporarily interrupting the electrical supply subject to the room heat requirements.
5.07 Adjusting the central heating flow
∆
t by varying pump flow-head
The thermal head
∆
t (the difference in temperature between the delivery water and return water in the central heating circuit)
must be less than 20
°
c. This is obtained by varying pump flow rate and head using the multi-speed variator (or switch) on
the pump itself. Increasing the pump speed reduces
∆
t and vice versa. The minimum differential must not be less than 11
°
C.
5.08 Adjusting central heating system pressure
The pressure of water in the central heating system, read on the control panel pressure gauge, is adjusted as described in
paragraph 3.07 page 20.
N.B. -
To avoid incurring unnecessary expense, in the event of boiler shut down, check that this is not caused by a lack
of electricity or gas, or low water pressure before calling the Customer Technical Service Helpline.
5.09 Gas conversion
The following adjustment and conversion operations must be carried out by competent personnel. FERROLI Limited accepts
no liability for damage to property or personal injury resulting from tampering with the boiler by unauthorised persons.
To convert the boiler from Nat Gas to LPG and vice versa, the main burner injectors must be replaced. Minimum and
maximum pressures must then be adjusted on the gas valve (see Adjustment page 23).
Note: After converting the boiler from natural gas to liquid gas, fit the orange plate in the conversion kit near the data plate.
Note: injector diameters and pressures at the main burner are given in Technical Data (page 6).
Fig. 25
5.03 Adjustment potentiometers
P1
=
C.H. temperature adjustment
P2
=
D.H.W. temperature adjustment
P3
=
C.H. output adjustment
P4
=
Ignition gas pressure adjustment
P5
=
Factory set - Don't touch
+
-
+
-
P2
DHW
+
-
P3
+
-
P5
+
-
P4
P1
CH
