3
SERVICING INSTRUCTIONS
SYLVA
Note!
The boiler serial number is marked on the label attached to the inside of the door. Refer to the
«Introduction» section page 3 of the Installation and User instructions for a description of the basic
functions of the boiler. The «Users» section describes how to safely operate the boiler.
CONTENTS
Routine cleaning and inspection .................................. Page 4 - 5
Replacement of parts ............................................................... 6 - 9
Domestic hot water thermostat .................................................... 6
Fan .................................................................................................... 6
Air pressure switch .......................................................................... 6
Printed circuit board ...................................................................... 6
Central heating thermistor ............................................................ 6
Central heating temperature control .......................................... 6
Pump ........................................................................................... 6 - 7
Temperature gauge ....................................................................... 7
Pressure gauge ............................................................................... 7
3-way valve head .......................................................................... 7
3-way valve ..................................................................................... 7
Loss of water switch ........................................................................ 7
Gas valve module .......................................................................... 7
Gas valve .................................................................................... 7 - 8
Modulating coil ............................................................................... 8
Central heating safety valve ........................................................ 8
Temperature/pressure relief valve ................................................ 8
Anode .............................................................................................. 8
Heat exchanger ............................................................................. 8
Expansion valve .............................................................................. 8
Central heating expansion vessel ................................................ 9
Domestic expansion vessel ........................................................... 9
High limit thermostat ...................................................................... 9
Combustion chamber insulation .................................................. 9
Burner ............................................................................................... 9
Burner injectors ................................................................................ 9
Ignition/flame sense electrode ..................................................... 9
Boiler schematic ........................................................................... 10
Technical data .............................................................................. 11
Schematic wiring diagram .......................................................... 12
Fault finding ............................................................................ 13 - 16
Spare parts .................................................................................... 16
Summary of Contents for SYLVA FF 24 E
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