Mark G(N)CT/RE, Техническое руководство

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5.2 Pilot burner set [8]
– Pilot burner set G20/G25, order code 50 17 640
– Pilot burner set G30/G31, order code 50 17650
– Gas valve in pilot burner connection, order code 06 07 060
5.3 Thermostat combination [9]
A One safety thermostat (STB), order code 31 01 655
A safety thermostat is a thermostat with a fixed setting, which is set higher than the maximum
temperature thermostat. If the maximum temperature thermostat fails, and the appliance over-
heats, this thermostat switches the appliance off. Once the cause of the failure has been rectified,
the thermostat can be released, after which the appliance will begin to operate automatically
(if heat isrequired at the time). Set at: 110 .
B One minimum temperature thermostat, order code 31 01 930
The minimum temperature thermostat ensures that the fan(s) is (are) switched on after a specified
warming-up period. The minimum temperature thermostat also provides post-ventilation to
expel any heat from the heat exchanger. Set at: 45 .
C/D One or two maximum temperature thermostats, order code 31 01 935
The maximum temperature thermostat switches the burner off when the value set is reached.
The fans continue to operate and the burner becomes operational (reciprocating motion) again
after cooling to below the value set. One or two thermostats may be installed depending on the
type of appliance. See the value-setting table for details
[9] .
5.4 Air pressure switch, order code 06 07 604 [10]
The differential pressure switch checks the transport of the combustion gases. If no or insufficient
combustion-gas transport is detected, the feed to the gas control combination is interrupted.
Setting: adjusted at the factory.
D
Adjustment disc
E Low pressure connection
F High pressure connection
5.5 Flue gas fan [11]
Depends on the appliance type.
5.6 Fan [12]
For axial fan: depends on the appliance type. [12]
For centrifugal fan: depends on the customer’s project requirements, consult your dealer.
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