SIT Tandem gas block 0830034

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:…