Operating instructions

Page 18
Victrix Zeus 20/27 Instructions
Maintenance Operations:
Lack of water in boiler.
Not enough water pressure detected in the heating circuit to guarantee correct boiler operation. Make sure
that the pressure in the system is between 1and1.2 bar. N.B. Close the valve on completion. If pressure
valves reach around 3 bar the safety valve may be activated. In this case contact a professional technician
for assistance. In the event of frequent pressure drops, contact qualified personnel for assistance to elimi-
nate system leakage.
System flow NTC sensor fault.
If the unit detects a problem with the system delivery NTC sensor, the boiler will not start; call a qualified
technician.
Domestic circuit NTC sensor fault.
If the unit detects a problem in the domestic circuit NTC sensor, the boiler will not produce domestic hot
water; call a qualified technician.
No water circulating.
This occurs if there is overheating in the boiler due to insufficient water circulation through the boiler - check
that no shutoff devices are closed and that the system is free of air . Check that the circulating pump is run-
ning freely. If necessary, remove the pump cover screw and manually rotate the pump impellor using a flat
bladed screwdriver. If lockout occurs repeatedly, contact a qualified technician for assistance.
Draining the system.
To drain the boiler, use the special drain cock. Before draining, ensure that the filling valve is not connected
closed.
Draining the boiler.
To drain the boiler, use the special drain cock. N.B.: Before carrying out this operation, close the boiler cold
water inlet cock and open any domestic circuit hot water cock to allow air to enter the boiler.
Anti-freeze protection.
The boiler comes standard with an anti-freeze function that starts the pump and burner when the water tem-
perature inside the boiler falls below 4°C and stops on exceeding 35°C. The anti-freeze function is guaran-
teed if the boiler is fully operative and not in “lockout” status, and is electrically connected with the main
switch set to Summer or Winter. To avoid continued operation in the event of prolonged absence, the sys-
tem must be drained completely or anti-freeze substances should be added to the heating system water. In
both cases the boiler domestic water circuit must be drained. In appliances subject to frequent draining, the
system must be refilled with suitably treated water to eliminate hardness that may cause lime scale forma-
tion.
Decommissioning:
In the event of permanent shutdown
of the boiler, contact professional
personnel for the procedures and
ensure that the electrical, water and
gas supply lines are shut off and
disconnected.
Casing Cleaning:
Use damps cloths and neutral
detergent to clean the boiler
casing. Never use abrasive or
powder detergents.