Glow-worm Xtrafast 96-120 - Manual (Page 39)

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19 Replacement of Parts
19.31 Storage vessel thermistor, refer to
diagram 19.20.
For this operation the boiler must be removed from the wall.
Before starting refer to the front of Section 19 Important
information.
• Drain down central heating and domestic hot water circuit of
boiler only, refer to relevant parts of Sections 16.13 and 19.8.
Note: It is not necessary to drain down entire heating system to
carry out this work.
• Disconnect flue system.
• Remove the base panel, secured with four screws and hooked
in at the rear.
• Disconnect boiler pipes onto fixing jig.
• Remove the front panel, refer to Section 16.3.
• Lower the control panel, refer to Section 16.4.
• Gain access to rear of control panel.
• Unclip side clips and hinge up control panel cover, see
diagram 11.2.
• Disconnect mains cable and any external controls cables.
• Remove the sealed chamber cover, refer to Section 16.4.
Remove the two side panels, refer to Section 16.6. Using the
two lifting handles positioned bottom left of the controls and to
the center right of the combustion chamber lift the boiler off the
hanging bracket and away from the wall.
• Remove the insulation from around the storage vessel
• Locate thermistor.
• Disconnect the electrical connection to the thermistor.
• Peel off the self adhesive thermistor.
• Clean the surface prior to fitting the replacement thermistor in
same position as old thermistor.
• Refit vessel.
• Refit boiler onto fixing jig, tighten all connections ensuring that
all sealing washers are fitted before tightening.
• Reconnect flue making sure that all joints are properly
connected.
19.32 Storage vessel heating element, refer to
diagram 19.21.
For this operation the boiler must be removed from the wall and
the storage vessel removed, refer to Section 19.30.
• Remove the insulation from around the storage vessel
• Locate heating element.
• Peel off the heating element, secured with self adhesive tape.
• Clean the surface prior to fitting the replacement heating
element in same position as old heating element.
• Refit vessel in reverse order to removal.
• Refit boiler onto fixing jig, tighten all connections ensuring that
all sealing washers are fitted before tightening.
• Reconnect flue making sure that all joints are properly
connected.
Diagram 19.20
9887
9888
➜
DOMESTIC HOT
WATER STORAGE
VESSEL
INSULATION
Diagram 19.21
➜
INSULATION
DOMESTIC HOT
WATER STORAGE
VESSEL