Saunier Duval Themaclassic F30E SB Instructions For Use Installation And Servicing page 55

20.33 Ignition unit, refer to diagram 20.22.
Before starting refer to the front of Section 20 Important
information.
• Remove the front panel, refer to Section 17.3.
• Lower the control panel, refer to Section 17.4.
• For ease of access remove the left hand side panel, refer to
Section 17.6.
• Disconnect electrical connections.
• Remove ignition unit securing screw.
• Pull upwards to release and remove the ignition unit from the
retaining slot.
20.34 (F30E/F35E Only) Domestic hot water plate to plate
heat exchanger
Before starting refer to the front of Section 20 Important
information.
• 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.
• Unclip the central heating thermistor.
• Unscrew the heating flow pipe union nut, swing pipe forwards,
see diagram 20.23.
• Supporting domestic hot water plate to plate heat exchanger,
unscrew and remove two screws securing it onto pump
mounting and 3-way valve/bypass housing.
• Remove plate to plate heat exchanger from boiler.
• Fit replacement plate to plate heat exchanger.
Note: Plate to plate heat exchanger mounting screws are offset
to ensure correct fitting.
20 Replacement of Parts
F30E/F35E Only
55
Diagram 20.22
DOMESTIC HOT WATER
PLATE TO PLATE HEAT
EXCHANGER
Diagram 20.23
IGNITION
UNIT
4000123924-2