Potterton SIRIUS FS Installation & Servicing Instructions Manual page 60

7.3.14 Gas Valve
7.3.15 Air Control Valve
Sirius FS
- See section 7.2 (items 3) for access
- Remove the front access door using a flat bladed screwdriver to release
the catches at the top of the door. Lift the top of the door outwards and
then upwards to remove it.
- Remove the air connection from the valve by pushing the face of the
connector inwards whilst pulling the tube out.
Pull out Push down
- Remove power connector and the two connections onto the minimum gas
pressure switch.
- Isolate the gas supply.
- Remove the 4 bolts connecting the valve to the venturi (top of valve) and
the 4 bolts connecting the gas valve to the gas pipe (bottom of valve)
- Carefully slide out valve
- Replacement is the reverse - Refit with new O rings
- Recommission gas burner (see section 6.4)
- Remove fan (see section 7.3.13)
- Disconnect the six way electrical connection underneath the air control
valve.
- Unscrew the five screws securing the air control valve to the door and
remove the air control valve.
{
Securing
screws
- Inspect condition of rubber seal and replace if worn or damaged. Ensure
that the seal is correctly located with its tab in alignment inside the
aluminium cut out on the door.
- Replacement is the reverse
Valve connection bolts
58
Alignment tab
Rubber seal
GB/IE