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C C
3.3 Control Panel
A - Ignition Lockout Reset Button/Safety (Overheat)Thermostat Reset
B - Ignition Lockout L.E.D.
C - Selector Knob for
Summer/Winter/Flue Analysis Modes*
D - Low System Water Level L.E.D.
E - Temperature Adjustment Knob for Domestic Hot Water
F - Heating System Thermometer
G - Safety (Overheat)Thermostat Intervention L.E.D.
H - Adjustment Knob for Heating Temperature
I - On/Off L.E.D.
L - On/Off Switch
O - System Pressure Gauge
* Warning the flue analysis mode must only be selected by a qualified service engineer.
18
B023
3.2 Removing the
Front Panel
A/23 MFFI - A/27 MFFI
21
F
To remove the front panel of the casing, proceed as follows:
1. Remove the screw “F” located on the top edge of the panel.
2. Lift and unhook the panel.
system (sect. 3.4) and run it until the temperature has reached the boiler
operating temperature. The system must then be immediately flushed through.
The flushing procedure must be in line with BS 7593:1992 Code of practice for
treatment of water in domestic hot water central heating systems.
During this operation, we highly recommend the use of a central heating
flushing detergent (Fernox Superfloc or equivalent), whose function is to
dissolve any foreign matter that may be in the system.
Substances different from these could create serious problems to the
pump or other components.
The use of an inhibitor in system such as Fernox MB-1 or equivalent is strongly
recommended to prevent corrosion (sludge) damaging the boiler and system.
Failure to carry out this procedure may invalidate the appliance warranty.