Datasheet Content
SIT Group
8 3 0 - 8 3 2 TA N D E M
M U LT I F U N C T I O N A L G A S C O N T R O L
DOUBLE AUTOMATIC SOLENOID SHUT-OFF VALVE
830 TANDEM CLASS B - 832 TANDEM CLASS A
PRESSURE REGULATOR OR GAS FLOW ADJUSTER
ADJUSTABLE STEP IGNITION
PIN 63AP7060/4
AUTOMATIC MULTIFUNCTIONAL
CONTROL
Multifunctional control with
two automatic, near-silent,
on-off valves:
- 830 TANDEM in class B
- 832 TANDEM in class A
Pressure regulator or,
alternatively, gas flow
adjustment device.
An adjustable-flow, step
ignition device can be
fitted on request.
830 - 832 TANDEM is suitable for installation on gas
appliances fitted with automatic ignition and flame
supervision systems, with or without intermittent pilot burner.
MAIN FEATURES
Two near-silent automatic shut-off valves:
- 830 TANDEM: EV1 + EV2 in class B.
- 832 TANDEM: EV1 + EV2 in class A.
Pressure regulator C; alternatively, gas flow adjustment device.
Adjustable flow step ignition device (optional).
Pilot outlet (optional) with gas flow restrictor.
Inlet and pilot filters.
Inlet and outlet pressure test points.
Threaded gas inlet and outlet with provision for flange connection.
Connection for pressure regulator / combustion chamber compensation.
Data refer to EN 126
DESCRIPTION
1 Shut-off solenoid valve EV1 6 Outlet pressure test point
2 Pressure regulator setting device, or, 7 Shut-off solenoid valve EV2
alternatively, outlet flow setting 8 Pilot outlet
screw 9 Main gas outlet
3 Pilot gas flow restrictor 10 Holes (M5) for fixing flanges
4 Step ignition flow adjustment screw 11 Connection for pressure regulator /
5 Inlet pressure test point combustion chamber compensation
3 4
5 6
11
8
2
9
10
1 7
TECHNICAL DATA
• Gas connections: Rp 1/2 ISO 7
• Installation position: any position ELECTRICAL DATA
• Gas families: I, II and III AUTOMATIC VALVES 830 TANDEM Class B 832 TANDEM Class A
• Maximum gas Voltage (AC) 230 V 50 Hz Consumption (mA) 80 Consumption (mA) 80
inlet pressure: 60 mbar 220 V 60 Hz 90 -
• Outlet pressure 24 V 50 Hz 850 900
setting range: 3 ... 50 mbar (20 ... 50 on request) 24 V 60 Hz 900 -
• Working temperature 24 V 50 Hz Low Energy 500 -
range: 0 ... 60°C (-20 ... +60 on request) 24 V 60 Hz Low Energy 600 -
• Pressure regulator: Class C
• Automatic solenoid valves 830 TANDEM Class B Electrical protection rating IP54 with 150 type connectors.
• Automatic solenoid valves 832 TANDEM Class A
Data refer to EN 126
DIMENSIONS
33
25,5
108
48
24,5
Rp 1/2 Rp 1/2
12
12
22
M4
12 12 30
86
27,5
11
28 32
65
25,5
17 17
14,5
14,5
5,5
96,5
105
FLOW RATE AS A FUNCTION OF PRESSURE DROP
Q [m3/h,3 d=0.6]
QQ[m [m /h 3
gas, d=0.6]d=0.6]
/h gas,
8
6 CLASS B+B
CLASS B+B
4
I Family (d = 0.45) Q = 5.6 m3/h ∆p = 5 mbar
II Family (d = 0.6) Q =4.8 m3/h ∆p = 5 mbar
2
III Family (d = 1.7) Q = 6.2 kg/h ∆p = 5 mbar
0
2 5
∆p∆p[mbar]
[mbar]
OPERATION
Reading the inlet pressure
The inlet pressure can be read at the pressure test point E with or without both automatic shut-off valves
energized.
Pilot burner ignition
When the automatic shut-off valve EV1 is powered, it permits the gas to supply the pilot burner outlet
(applications with intermittent pilot) after passing through the inlet filter, the pilot filter and the pilot flow
rate restrictor (PILOT).
Main burner ignition
When both automatic valves, EV1 and EV2, are energized, gas passage to the main burner is opened.
Outlet pressure
The outlet pressure is read at the test point A.
PILOT
E A
EV1 EV2
REGULATED FLOW RATE IN ACCORDANCE WITH EN 88
Q [m3
/h ,3d=0.6]
Q [m /h gas, d=0.6] CLASS B+B
10
Inlet pressure range (mbar)
8
Gas type
6
2L Nominal Max. Min.
4 2H 20 25 17
2H
2 2L 25 30 20
0 Outlet pressure tolerance +10%...-15%
4 6 8 10 12 14 16
Pu PU
[mbar]
[mbar]
STEP IGNITION
Ignition gas flow as a function of time Qs [m3/h]
Maximum step
ignition flow Qs 3
Q max as a function of
the gas flow Q
to the burner. 2
Qs
Gas 2H
tr Time (s)(s)
Tempo
1
II Family III Family
Step ignition time tr: 4s 3s 0
Step ignition* reset time: 40 s (10 s on request) 1 2 3 4 5 6
Q [m3/h]
*Reset time:…
