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Victrix 24kW X Instructions
Central Heating System
The boiler is designed for use in a sealed central heating system. The system should be designed to
operate with flow temperatures of up to 80°C. When designing the system, the pump head, expansion
vessel size, mean radiator temperature, etc. must be taken into account.
The pressure losses in the system must be compatible with the boiler circulation pump. See pump
performance graph below
A.
Head available to the system at third speed (with by-pass off)
B.
Head available to the system at second speed (with by-pass on)
System volume -
The 8 litre expansion vessel incorporated into the boiler is pre-charged to 1.0 bar and is
suitable for a sealed heating system with a maximum water content of 80 litres (18 gal). Above 80 litres,
consideration should be given to fitting an additional expansion vessel fitted in the position shown on the
schematic below. To check correct operation of the expansion vessel(s) the system pressure should not be
more than 2.5 bar when the system is at maximum operating temperature.
The boiler is supplied with the following components built in:-
Central Heating Pressure relief valve -
complying with BS 6759 and set to operate at 3 bar. The dis-
charge pipe must be routed clear of the boiler to a drain, so that it can be seen, but cannot cause injury to
persons or property.
A Pressure gauge is included
to indicate the pressure of the central heating system.