Use And Installation Instructions - SIT Group 822 NOVA Manual Del Usuario

USE AND INSTALLATION
INSTRUCTIONS
A multi-functional gas control valve with two automatic solenoid valves for use in appliances with automatic
ignition and flame failure systems, with or without intermittent pilot burner.
All the adjustment are on the top face of the valve.
MAIN FEATURES
Two automatic silent-action solenoid valves:
EV1 in class B (class A optional)
EV2 in class D (class C optional)
Servo-controlled pressure regulator (RP)
Step opening ignition device (optional) (SO)
Pilot outlet (plugged on request) with pre-selected gas flow (RQ)
Inlet and outlet pressure points
Inlet filter and pilot filter (FL)
Outlet for connecting the pressure regulator to the combustion chamber (on request).
WORKING DIAGRAM
GAS
INLET
FL
EV1
TECHNICAL DATA
The technical data specified below refer to the European standard, EN 126 "Multi-functional controls for
gas-burning appliances".
Group
Automatic valve (EV1)
Automatic valve (EV2)
Pressure regulator (RP)
Outlet pressure setting range
Working temperature range
Max. gas inlet pressure
Solenoid valve opening and closing times ≤ 1 s
Assembly position
Gas connections
Outlet pressure during slow-opening period
Gas families applicable
ELECTRICAL DATA
SOLENOID VALVES
Voltage (AC)
240 V 50 Hz
220 V 50 Hz
220 V 60 Hz
24 V 50 Hz
24 V 60 Hz
Electrical protection rating
4
SO
RP
FL RQ
2
class B
class D
class B
3-30 mbar
0-60°C
60 mbar
any position
Rp 1/2 ISO 7
4 mbar
I, II and III
EV1
Consumption (mA)
Class B o A
50
40
45
450
450
IP 54 using screw-type
connectors code 0.960.125
GB
EV2
MAIN BURNER
PILOT BURNER
(class A optional)
(class C optional)
(20-50 mbar on request)
(-20°...+60°C on request)
(other versions optional)
EV2
Consumption (mA)
Class D o C
25
20
25
210
220
IP 54 using 160-type connectors
with screw and seal code 0.960.104