Immergas VICTRIX EXTRA 12 PLUS - Appliance Switch-Off; Restore Central Heating System Pressure; Draining the System; Antifreeze Protection

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INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
2.7 APPLIANCE SWITCHOFF
Switch o the appliance by pressing " " (pos. 1, Fig. 48), disconnect the omnipolar switch outside the appliance and close the gas isola-
tion valve upstream of the appliance.
Never leave the appliance switched on if le unused for prolonged periods.
2.8 RESTORE CENTRAL HEATING SYSTEM PRESSURE
1. Periodically check the system water pressure (the appliance’s pressure gauge hand must indicate a cold value between 1 and 1.2 bar).
2. If the pressure is below 1 bar (with the circuit cool), restore normal pressure from the relative valve (Det. 1, Fig. 7)
3. Close the valve aer the operation.
4. If the pressure rises to values close to 3 bar, there is a risk of the safety valve tripping (in this case, remove water from an air release
valve on a radiator or by acting on the drain valve (Det. 2, Fig. 7) until the pressure is restored to 1 bar, or call in professionally qualied
personnel).
If the system is hot, be sure to let it cool down before draining to avoid the risk of scalding.
5. In the event of frequent pressure drops, contact qualied sta for assistance to eliminate the possible system leakage.
2.9 DRAINING THE SYSTEM
To drain the boiler, use the special draining valve (Part. 2, Fig. 7).
Before draining, ensure that the lling valve is closed.
If uid containing glycol was added to the system circuit, make sure it is recovered and disposed of in accordance with standard
EN 1717.
2.10 ANTIFREEZE PROTECTION
e appliance has an antifreeze function that switches the burner on automatically when the temperature drops below 4°C (standard
protection to minimum temperature of -5°C).
In order to guarantee the integrity of the appliance and the domestic hot water heating system in areas where the temperature drops be-
low zero, we recommend protecting the central heating system using anti-freeze liquid and installing the Immergas Antifreeze Kit in the
appliance.
All information on antifreeze protection can be found in the Installer section at Parag. 1.4.