Glow-worm 18si - Page 47

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18 Replacement of Parts
18.21 (24ci Only) Filling system tap, refer to
diagram 18.12.
Before starting refer to the front of Section 18 Important
information.
• Remove the front panel, refer to Section 15.3.
• Lower the control panel, refer to Section 15.4.
• Drain down the hotwater circuit, refer to relevant part of
diagram 18.1.
• Pull of the filling loop tap extension.
• Pull out slotted metal clip securing tap into housing, remove
tap.
• Pull out slotted metal clip and remove pipe from tap.
18.22 (24ci Only) Reduced pressure zone valve
(RPZ), refer to diagram 18.12.
Before starting refer to the front of Section 18 Important
information.
• Remove the front panel, refer to Section 15.3.
• Lower the control panel, refer to Section 15.4.
• Drain down the boiler only, refer to relevant part of diagram
18.1.
• Pull out slotted metal clip securing pipe to RPZ.
• Pull out slotted metal clip securing RPZ into housing, remove
RPZ.
18.23 Boiler drain point, refer to diagram
18.13.
Before starting refer to the front of Section 18 Important
information.
• Remove the front panel, refer to Section 15.3.
• Lower the control panel, refer to Section 15.4.
• Drain down the boiler only, refer to relevant part of diagram
18.1.
Pull out slotted metal clip securing boiler drain valve into
housing, remove boiler drain valve.
18.24 (24ci Only) Water flow sensor, refer to
diagram 18.14.
Before starting refer to the front of Section 18 Important
information.
• Remove the front panel, refer to Section 15.3.
• Lower the control panel, refer to Section 15.4.
Drain down the hotwater circuit, refer to relevant part of
Section 18.1.
• Undo the union nut on the cold water inlet isolating valve.
• Pull out slotted metal clip securing filling system tap into
housing, swing the tap forwards.
• Pull out the two slotted metal clips retaining the domestic
water inlet filter housing.
• Remove domestic water inlet filter housing.
• Remove electrical connections from water flow sensor.
• Pull off slotted metal clip and remove water flow sensor.
24ci only Diagram 18.14
9846
Diagram 18.13
9841
➜
BOILER DRAIN
VALVE
WATER
FLOW
SENSOR
➜
➜
➜
➜
➜
➜
9847
Diagram 18.1224ci Only
11936
FILLING TAP
➜
➜
➜
➜
REDUCED PRESSURE
ZONE VALVE (RPZ)