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DOMINA 102 DGT
5.03 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.
∆
5.04 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.
5.05 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 3.11 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.
5.06 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 5).
23
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