iVector S2
Installation manual
iVector S2 • 2022-07-01
US
2.10 Filling and venting the system
When starting up the system, make sure that the return
valve is open. Refer to section 4.3 for correct setting.
If there is no electric power and the valve actuator has
not already been powered up, use the special tool, press
the valve actuator and use the tool to keep it open.
• Open all the shut off valves (manual or automatic).
• Start to slowly fill the system.
• For units installed in a vertical position, open the
highest vent of the heat exchanger; for appliances
installed in a horizontal position, open the highest
positioned vent; for the 4-pipe versions open the
highest vents on both heat exchangers. Vents can be
opened using a screwdriver.
• When water starts coming out of the air vents, close
them and continue filling the system until reaching
the nominal system pressure.
• Check for leaks.
It is advisable to repeat these operations after the
appliance has been running for a few hours and to
periodically check the system pressure.
A Venting of the heat exchange
A
A
Warning: Commissioning instructions – opening the valve actuator (where used)
Remove the 'red plastic' clip from the valve actuator
before starting the system.
A Valve actuator C Red plastic clip
B Valve
C
A
B
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