Glow-worm Xtramax - Manual (Page 40)

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SECURING RODS
SECURING
BAR
BLADE
INJECTOR
20 Replacement of Parts
Diagram 20.13
20.21 Overheat thermostat
Before starting refer to the front of Section 20 Important
information.
• Remove the front panel, refer to Section 17.3.
• Remove sealed chamber cover, refer to Section 17.4.
• Locate high limit thermostat on heating flow pipe on left hand
side of boiler, see part of diagram 17.4.
• Disconnect electrical connection from thermostat
• Unclip thermostat from heating flow pipe.
• Fit replacement thermostat in reverse order to removal. (Use
heat sink compound supplied).
• Refit connection to thermostat.
20.22 Combustion chamber insulation
Before starting refer to the front of Section 20 Important
information.
• Remove the front panel, refer to Section 17.3.
• Remove sealed chamber cover, refer to Section 17.4.
• Remove combustion chamber cover, refer to Section 17.7.
• Remove main heat exchanger, refer to Section 20.19.
• Remove fan and loosen flue hood, refer to relevant parts of
Section 17.9.
Front panel insulation
• Bend back small retaining lugs, remove the front insulation
panel free from retaining lugs on combustion chamber cover.
Rear panel insulation
• Pull rear insulation panel free from retaining lug at rear of
combustion chamber by tilting forward.
Side Panels
Note: Rear panel must be removed first.
• Pull out side panels free from retaining lugs at side of
combustion chamber by tilting sideways.
20.23 Burner
Before starting refer to the front of Section 20 Important
information.
• Remove the front panel, refer to Section 17.3.
• Remove sealed chamber cover, refer to Section 17.4.
• Lower the control panel, refer to Section 17.5.
• Remove combustion chamber cover, refer to Section 17.7.
• Remove burner, refer to Section 17.8.
Assemble replacement burner, supplied in parts, as follows:
• Fit burner injectors to burner injector bar and tighten.
Note: Make sure that injector size, marked on each injector, is
the same as that given in ‘Section 1 Technical Data’ for the
type of gas being used.
• Fit injector bar into burner, secure with retaining rods.
• Fit replacement burner.
Note: To aid in assembling the burner, refer to Section 20.24.