Gas Train Assembly; Gas Valve - Riello RX 70 S/PV Installation, Use And Maintenance Instructions

5.9.1

Gas train assembly

This has been type-approved together with the burner, in
accordance with EN 676 standard, and is supplied with the
burner.
GAS TRAIN ASSEMBLY
Gas supply
Flange
5.9.2

Gas valve

Valve model
Mixer model
Gas line connection
Working temperature
Max. working pressure
Min. working pressure
Max. inlet pressure
Valve class
Electric power supply
Protection level
20144769
Gas pressure test point
downline (P2)
Gas pressure test point
upline (P1)
Gas valve
D7376
Honeywell VK4125V 2003 4
Honeywell 45.900.444-001B
½" inlet
-15°C/70°C
30 mbar
15 mbar
60 mbar
B + B
220-240 V
IP 40 according to IEC 529
Installation
The connection valve-manifold allows compensating the
accidental occlusion of the suction line through the distributed
gas reduction.
D7375
D7155
Tab. G
16 GB
Air/gas mixer
in the suction line circuit
Gas flow adjustment
maximum (V1)
Gas flow adjustment
minimum on the stabilizer (V2)
Gas compensation pipe
D7380
Fig. 10