VALVE DESCRIPTION AND TECHNICAL DATA
1. Control Knob
2. Main gas flow manual adjustment device
3. Adjustment screw for gas flow to the pilot
4. Thermocouple connector
5. Alternative thermocouple connector
6. Provision for accessories support bracket
7. Inlet pressure test point
8. Outlet pressure test point
9. Actuating solenoid valve
10. Pilot outlet
11. Main gas outlet
12. Holes (M5) for fixing flanges
13. Supplementary valve body fixing points
14. Connection for pressure regulator/combustion
chamber compensation
15. Thermocouple and thermostat connection
Gas connections:
Rp 1/2 ISO 7 (1/0 3/8˝ on request)
Installation position:
any position
Gas families:
I, II and III
Maximum gas inlet pressure:
60 mbar
Outlet pressure setting range:
3 – 30 mbar (20 – 50 on request)*
Working temperature range:
0 – 70° C
Pressure regulator:
Class B
Automatic Solenoid Valve:
Class D (Class C on request)
* Versions without manual gas flow adjustment device
TECHNICAL DATA
THERMOPILE POWER SUPPLY
Use two-wire thermopile
Voltage with open circuit:
> 350 mV
Voltage with closed circuit: > 100 mV
Resistance of the coil:
1.6 ohm
GAS CONTROL ASSEMBLY
PART
PART No.
AGA Approval
SIT 820 NOVA Mv
0820332-NAT GAS
4032
SIT 820 NOVA Mv
0820331-LPG
4032
SIT THERMOCOUPLE
200261
4032
SIT PILOT ASSEMBLY
190610
4032
SIT THERMAL GENERATOR
240002
4032
PIEZO WITH LEAD
28510
4032
PIEZO IGNITOR PUSH BUTTON
73953
4032
PIEZO BRACKET
978099
4032
26