Mark GS+ - Description of Parts

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. Ret 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 ue 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 tted in the ue 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 ue gas collection chamber.
– If a G+ with a centrifugal fan is tted with lters, the ow resistance through the lters increases
as dirt accumulates. This ow resistance may not exceed the value shown on the type
plate. Only replacement lters of the same class may be used. Refer to the sticker on the lter
housing for more information about the lter 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]
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