Saunier Duval Themaclassic F24E PLUS Instructions For Use Installation And Servicing page 54

Replacing the expansion vessel
Before starting refer to the front of Section 20 Important
information.
• For this operation the boiler must be removed from the wall.
• IMPORTANT: With regards to the manual handling operations,
1992 regulations, the following operation exceeds the
recommended weight for one man lift.
• Remove the front panel, refer to Section 17.3.
• Lower the control panel, refer to Section 17.4.
• Drain down the boiler only ,refer to relevant parts of
diagram 20.1.
• Disconnect the flue system.
• Disconnect the boiler pipes at the fixing jig.
• Disconnect the pressure relief valve discharge pipe.
• Disconnect the mains cable and any external controls cables.
MICRO
ACCUMULATION
VESSEL HEATING
ELEMENT
MICRO
ACCUMULATION
VESSEL
4000121771-2
20 Replacement of Parts
• Lift up to remove the boiler from the wall.
• Remove sealed chamber cover, refer to Section 17.4.
• Remove the combustion chamber cover, refer to Section 17.5.
• Remove the fan, refer to Section 17.10.
• Remove air pressure switch sensing tube from the side of the
flue hood, see diagram 17.9.
• Release both side panels, refer to Section 17.6.
• Remove the flue hood, lift up and off to release from rear
location tabs.
• Remove the expansion vessel retaining screw.
• From the rear of the boiler.
• Undo pipe coupling on expansion vessel.
• Lift to remove expansion vessel.
Note: Check that expansion vessel pressure is correct, see
'Section 1 Technical Data'.
SLOTTED
METAL
CLIP
EXPANSION
VESSEL
SECURING
SCREW
SLOTTED
METAL
CLIP
EXPANSION
VESSEL
Diagram 20.27
54
Diagram 20.28