![background image](http://html1.mh-extra.com/html/hoval/ultraoil-110/ultraoil-110_operating-instructions-manual_2170755011.webp)
4 210 254 / 00
11
System start-up
5.
System start-up
Commissioning of a newly installed system may only be carried out by a quali-
fied installer. A full installation check must be completed prior to start-up.
- Set the main SYSTEM switch to “0”
- Open the shut-off valves in the flow and return lines.
- With the UltraOil
®
fill the odour trap (siphon) in the condensate drain pipe
with water before starting up the system.
5.1 Checks prior to start-up
Check the water level in the heating system.
The heating system must be filled with water and all the air removed.
Observe the regulations regarding antifreeze and water treatment.
Open the shut-off valves in the flow and return lines.
Check the fresh air supply to the heating system.
Check the settings for the operating modes.
5.2 Switching on the system
Switch on the main switch.
Set the boiler control unit to the desired operating mode and tempera-
ture.
i
i