Technical data

55
4000123924-2
20 Replacement of Parts
Diagram 20.22
9767
IGNITION
UNIT
➜
➜
➜
➜
Diagram 20.23
11596
➜
➜
➜
➜
DOMESTIC HOT WATER
PLATE TO PLATE HEAT
EXCHANGER
11597
F30E/F35E Only
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.