Fuel Supply - Riello RX 15 S/PV Typ 900T3 Montage- Und Bedienungsanleitung

3.5

FUEL SUPPLY

The burners are teamed with one-piece pneumatic proportioning gas valves, via which the amount of gas
delivered, and hence the output produced, can be modulated.
A signal reporting pressure detected in the air circuit is carried to the pneumatic gas valve, which delivers an
amount of gas in proportion to the airflow produced by the fan.
To optimise the bulk, the gas train is assembled directly on the body of the burner and is pre-set in the factory.
GAS TRAIN ASSEMBLY
Gas pressure upline
test point (P1)
Flange
Gas supply
Gas valve
Valve model
Mixer model
Gas line connection
Working temperature
Max. working pressure
Min. working pressure
Max. inlet pressure
Valve class
Electrical supply
IP
3425
D7376
Honeywell VK4115V 1014
45900446-055
½" inlet
-15°C/70°C
30 mbar
15 mbar
60 mbar
B + C
220-240 V
IP 40 according to IEC 529
D8425
Air/gas mixer
Gas and combustive air are mixed
inside the purging circuit (mixer),
starting from the intake inlet.
Through
introduced into the intake air current
and optimal mixing commences with
the aid of a mixer.
5 GB
Maximum gas flow
adjustment (V1)
Gas pressure downline
test point (P2)
Minimum gas flow adjustment
on the stabiliser (V2)
Gas valve
D7155
the gas train, fuel is