Sit 820 NOVA mV - Technical Data; Electrical Data; Gas Flow

5
1
Pu [mbar]
2
5
10 15
0
2
4
6
8
10
12
0
5
10
Q [m
3
/h d=0,6 class D]
4
2
6
8
10
GAS FLOW
CLASS D
I Family (d = 0.45) Q = 7.5 m
3
/h ∆p = 5 mbar
II Family (d = 0.6) Q = 6.5 m
3
/h ∆p = 5 mbar
III Family (d = 1.7) Q = 8.1 kg/h ∆p = 5 mbar
CLASS C
I
Family (d = 0.45) Q = 5.3 m
3
/h ∆p = 5 mbar
II Family (d = 0.6) Q = 4.6 m
3
/h ∆p = 5 mbar
III Family (d = 1.7) Q = 5.8 kg/h ∆p = 5 mbar
TECHNICAL DATA
The following technical data refer to the EN 126 Standard - "Multi-functional controls for gas-burning appliances".
Gas connections Rp 1/2 ISO 7
Installation position any position
Gas families I, II and III
Maximum gas inlet pressure 60 mbar
Maximum outlet pressure setting range 3...30 mbar (optional: 20...50 or 5...50 mbar)
Working temperature range 0...70 °C (optional -20...60°C)
Pressure regulator Class B
Automatic shut-off valve Class D (class C on request)
Closing time standard <1s
mV version <5s
Bending and torsion resistance group 2
Flame failure device
(using SIT series 200 or 290 thermocouples)
Ignition time < 10 s
Shut-off time < 60 s
Number of cycles expected 5.000
Manual shut-off
Number of cycles expected 5.000
AC-POWERED VERSIONS mV VERSIONS
Voltage (AC) Consumption (mA) Class D or C Use two-wire millivolt generators
240 V 50 Hz 25 Voltage with open circuit ≥ 370 mV
220 V 50 Hz 20 Voltage with closed circuit ≥ 145 mV
220 V 60 Hz 25 Coil resistance 2.2 Ω
24 V 50 Hz 210
24 V 60 Hz 220
Electrical protection rating IP54 using 160 type connectors
with screw and gasket code 0.960.104
ELECTRICAL DATA
Q [m
3
/h d=0,6 class D]
Inlet pressure range
Curve Gas Type
Nominal Max. Min.
1 2H 20 25 17
22L 25 3020
9956820-02_MI_820 NOVA_A4 27-10-2003 16:38 Pagina 5