Thermasis HYDRA PLUS, Инструкция по установке и эксплуатации, Страница: 17 / 44


Close the system loading tap and then bleed air again via the radiator air valves; and
check tightness of all connections;

After having started the boiler for the first time and heated up the system, stop the
pumps and repeat the air bleeding operations;

Let the system cool down and if needed take the water pressure back to 1 bar. The
water pressure in the heating system - when the system is cold - must be no less than
1 bar; if under this value, act on the system filling tap. The operation must be carried
out when the system is cold. The system pressure gauge enables to monitor the
pressure in the circuit.

Auto air discharge valve of the stove is reached after removing top and of right hand
side panel:
6.4. Electrical connection
Electrical safety of the system is ensured only when it is properly connected to an efficient
earthing system made in compliance with the safety standards in force. Gas, water or heating
systems pipes are not suitable as earth connections. Check if the electrical system is suitable
for the maximum power absorbed by the heating system, ensuring in particular that the
diameter of cables is appropriate for the power absorbed by the loads. The use of any
component that is powered by electricity entails compliance with some basic rules such as:
• do not touch the appliance with wet and/or damp body parts and/or bare feet;
• do not pull the electric cables;
• do not leave the appliance exposed to weathering (rain, sun, etc.);
• do not allow the appliance to be used by children or inexperienced persons.
Installation of the boiler accessory electrical components requires electrical
connection to a 230 V – 50 Hz mains.
NOTICE

Electrical installation must be carried out by a qualified technician only.

Before performing connections or any operation on the electrical parts, always disconnect the
power supply and make sure it cannot be accidentally reconnected.

Please note that the boiler electrical power line must be fitted with a bipolar switch with a
contact gap greater than 3 mm, easy to access, in order to make any maintenance
operations quick and safe.