Filling The System; Routine Maintenance Instructions; Switching Off The Boiler - Potterton Sirius two WH Instruction Manual

6. FILLING THE SYSTEM

The pressure displayed on the pressure gauge has to be between 1 - 1.5 bar, with the system cold. If it is lower, turn the system
filling tap installed by the fitter.
IMPORTANT: open the tap very slowly in order to vent the air.
The boiler is fitted with a hydraulic pressure switch which prevents the boiler from working if there is no water.
If pressure drops occur frequently (monthy basis), have the system checked by the AUTHORISED TECHNICAL SERVICE
CENTRE.

7. ROUTINE MAINTENANCE INSTRUCTIONS

To keep the boiler efficient and safe, have it checked by the Authorised Service Centre at the end of every 12 months.
Careful servicing ensures economical operation of the system.

8. SWITCHING OFF THE BOILER

To turn off the boiler, disconnect the electric power supply using the two-pole switch. In the "Off" operating mode
off but the electrical circuits remain powered and the frost protection function remains active.
7
the boiler stays
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