Mark GS+ Livret Technique page 13

The gas transport section can be removed from the appliance as a single assembly. To do so, six
M6 nuts must be removed and the electrical wiring disconnected.
– Removal of the gas transport section provides access to the burner and the ignition/ionisation
electrode. It is recommended to replace the ignition/ionisation electrode yearly during regular
maintenance.
– Check the burner surface for irregularities. Never use a steel brush!
– Clean the gas mixer using a soft brush. Make sure that no dust gets into the burner and the gas
suction tube. Refit the gas transport section, reconnect the wiring and the gas and electrical
supplies. [27]
– The condensation drain nozzle is located in the base-plate of the flue gas collection chamber.
This opening and the siphon should be checked regularly for dirt build-up.
– A GS+ 135/150 has a water level sensor fitted in the flue gas collection chamber. This switches the
appliance off if a blockage forms in the condensation water pipe or the siphon in order to avoid an
unacceptable build-up of water in the flue gas collection chamber.
– If a G+ with a centrifugal fan is fitted with filters, the flow resistance through the filters increases
as dirt accumulates. This flow resistance may not exceed the value shown on the type
plate. Only replacement filters of the same class may be used. Refer to the sticker on the filter
housing for more information about the filter set(s).
– Check the fan pulley(s) and belt tension, clean the pulley(s) if required.
– When using a condensate pump (3100585) with condensation neutralization kit (3100586) the
cartridge needs to be replaced annually.
6.0 Description of parts
The parts are:
– Fan [7]
– Combustion air fan [8]
– Ignition set [9]
– Water level sensor [10]
– Burner [11]
– Gas control unit [12]
– Ambient temperature sensor [13]
– Outlet temperature sensor / max [14]
– Gasket set [15]
– Microprocessor [16]
– Gas mixer [17]
– Siphon [18]
EN
13