GasMultiBloc Combined servo pressure regulator and safety shut-off valves MBC-00-SE MBC-700-SE MBC-100-SE MBC-00-N MBC-700-N 7.01 Max. operating pressure mbar Compact design High flow rates Low weight Low power consumption Modulating mode Adjustable outlet pressure up to 00 mbar Other servo pressure regulator variants: - zero pressure - constant pressure Printed in Germany Rösler Druck Edition 0.07 Nr. 40 417 8 Accessories same as DMV/11 Technical Description The DUNGS multiple actuator MBC...SE integrates filter, valves and servo pressure regulator in one compact unit: - Dirt trap: Microfilter - Solenoid valves up to mbar to DIN EN 161 Class A Group, fast opening - Servo pressure regulator unit to DIN EN 88 Class A Group - Outlet pressure: 0-00 mbar - Precision regulation of outlet pressure - For optimal outlet pressure stability - Flanged joints with pipe threads to ISO 7/1 or NPT - Easy to install - Low weight The modular system permits individual solutions with valve proving system, min./max. pressure switches and pressure limiters. High flow rates at low pressure differences. Application The servo pressure regulator permits optimal mixture formation in forced air burners and premix burners in conjunction with mechanical or electronic integrated gas-air regulation units; this applies to modulating and multistage floating operating mode. Suitable for gases of gas families 1,, and other inert gaseous media. Approvals EC type test approval as per EC Gas Appliance Directive: MBC...SE CE-0085 BM 045 EC type test approval as per EC Pressure Equipment Directive: MBC...SE CE006 Approvals in other important gas consuming countries.
Functional Description Gas flow 1. If valves V1 and V are closed, chamber a is subjected to inlet pressure.. The min. pressure switch (option) is connected to chamber a via a boring. If the inlet pressure drops below the desired value set on the pressure switch, the switch opens in the direction of the gas burner control system.. After they are enabled by the gas burner control system, valves V1 and V open. Gas flow is released through chambers a and b. Functional description of the combined valve-regulator unit Valves V1 and V can be controlled electrically and separately. Each valve preloads its own compression spring when the plunger opens. When the two valves are open, a pressure pulse runs below the working diaphragm. The size of the pressure pulse changes as a factor of the variable restrictor position D. The outlet pressure p Br acts against the setting spring force via the servo diaphragm until a force equilibrium is attained. The opposite side of the servo diaphragm is subjected to ambient pressure p amb. Changes in the equilibrium of forces lead to a change in flow cross-section. The pressure under the working diaphragm re-adjusts itself. The regulator unit adapts the free valve cross-section to the new flow requirement. Schematic diagram MBC...SE/N M D S E R Working diaphragm Restrictor Servo diaphragm Setting spring for outlet pressure p Br Regulator disc 11 10 9 8 7 6 5 4 1 a b p 1 R p Br M S E a, b Pressure chambers in flow direction p 1 Inlet pressure p Br Burner pressure, outlet pressure Ambient pressure p amb V1 D p Br intern Standard p 1 p V p amb p Br extern Option 16 15 14 1 1 17 Closing function If there is an interruption in power supply to the solenoids of valves V1 and V, they are closed by the compression springs within <1s. 1 Pressure regulator unit Regulator spring Connecting flange 4 Coarse and microfilters 5 Valve V1 6 Closing spring V1 7 Housing 8 Plunger V1 9 Solenoid V1 10 PCB 11 Electrical connection 1 Valve V 1 Closing spring V 14 Plunger V 15 Solenoid V 16 Solenoid housing 17 Adjustment: - Gas pressure p Br Pressure taps, gas train diagram MBC...SE/N 4 1 5 4 1,,, 4, 5 Screw plug G 1/8 8
Technical Data Nominal widths Flanges with pipe threads to ISO 7/1 (DIN 999) Max. operating pressure Inlet pressure ranges Burner pressure ranges Media Ambient temperature Dirt trap device Pressure switch Servo pressure regulator Solenoid valve V1, V Measuring gas connection Voltage/frequency Electrical connection Rating/power consumption Switch-on duration Switching cycles Degree of protection Radio interference suppression MBC-00-SE MBC-700-SE MBC-100-SE Rp 1/, /4, 1, 1 1/4 Rp 1, 1 1/4, 1 1/, Rp 1, 1 1/4, 1 1/, and their combinations and their combinations and their combinations mbar S0,,, 8: p e = 15 - mbar S00, 0: p e = 5 - mbar N: p e = 15 - mbar S0, S: p Br : 4-0mbar S, S8: p Br : 5 - mbar S00, S0: p Br : 0-00mbar N: p Br : 0 ± mbar Gases of gas families 1,, and other inert gaseous media -15 C up to +70 C (in LPG plants, do not operate MBC...SE below 0 C. Only suitable for gaseous LPG, liquid hydrocarbons destroy the seal materials) Coarse and micro-filter made of chopped-strand nonwoven fabric, two-layer. Filter replaceable without removing fitting Types GW A5, NB A, ÜB A as per DIN EN 1854 retrofitable. For further information refer to Data Sheets Pressure switch for DUNGS multiple actuators 5.0 and 5.1 Servo pressure regulator with adjustable burner pressure, as per DIN EN 88 Class A, Group Versions for constant pressure and zero pressure available Valves as per DIN EN 161 Class A Group, fast-closing, fast-opening G 1/8 DIN ISO 8, at inlet and outlet flanges, on both sides downstream of filter, between V1 and V, downstream of V (fitting pressure switch may partially exclude measuring gas connection) ~(AC) 50 - Hz 0 V -15 % +10 %, other voltages on request. Standard voltages: ~(AC) 100 V - 10 V, =(DC) 48 V, =(DC) 4 V - 8 V Plug-in connection as per DIN EN 17501- at ~ (AC) 0 V; +0 C: see type summary 100 % ED per hour (0 s on/off) IP 54 as per IEC 59 (EN 59) Interference level N Materials of gas-conveying parts Housing Diaphragms, seals Solenoid drive die-cast aluminium on NBR base steel, aluminium Installation position Vertical with upright solenoid or horizontal with horizontal solenoid, as well as their spacers. 8
Mounting dimensions [mm] MBC-00/700-... MBC-100-... e = space requirement for solenoid replacement 4 8
Type Version Order No. 0 VAC DN Rp Opening time a Mounting dimensions b c d e f g Solenoid No. Switching ops/h Weight [kg] MBC-00-SE S 9 717 1/ - 11/4 95 14 61 17 69 87 4 0/P.8 MBC-00-SE S8 1 961 1/ - 11/4 95 14 61 17 69 87 4 0/P.8 MBC-00-SE S0 41 918 1/ - 11/4 95 14 61 17 69 87 4 0/P.8 MBC-00-N on request 1/ - 11/4 95 14 61 17 69 87 4 0/P.8 MBC-700-SE S 41 515 1-16 176 186 81 114 65 04/P 6.5 MBC-700-SE S8 4 055 1-16 176 186 81 114 65 04/P 6.5 MBC-700-SE S0 4 056 1-16 176 186 81 114 65 04/P 6.5 MBC-700-N on request 1-16 176 186 81 114 65 04/P 6.5 MBC-100-SE S 45 6 1-04 61 96 8 50 161 44 05/P 16.8 MBC-100-SE S8 4 408 1-04 61 96 8 50 161 44 05/P 16.8 MBC-100-SE S0 4 409 1-04 61 96 8 50 161 44 05/P 16.8 MBC-00-... MBC-700-... MBC-10-... P max. [VA] for t = s 140 1 00 P max. [VA] Operation 0 0 0 Flange for Rp/NPT Order No. Order No. MBC-00-... MBC-00-... MBC-00-... MBC-00-... Rp 1/ Rp /4 Rp 1 Rp 1 1/4 41 4 001 1 717 Line socket pole + PE 10 19 MBC 700/100-... MBC 700/100-... MBC 700/100-... MBC 700/100-... Rp 1 Rp 1 1/4 Rp 1 1/ Rp 4 44 1 884 1 96 Adapter, pressure gauge flange set G1/ Adapter GW A with G1/4 Adapter p Br Adapter GW A on flange 16 675 98 14 975 1 MBC-00-... MBC-00-... MBC-00-... MBC-00-... NPT 1/ NPT /4 NPT 1 NPT 1 1/4 71 68 1 999 1 718 Flanges, plug-in connection and system accessories must be ordered separately. MBC 700/100-... MBC 700/100-... MBC 700/100-... MBC 700/100-... NPT 1 NPT 1 1/4 NPT 1 1/ NPT 69 70 00 1 997 5 8
Volume flow pressure difference characteristics in steady state with microfilter. MBC-00-... 00 00 150 100 50 40 0 Recommended operating range MBC-00-... (Rp /4) MBC-00-... (Rp 1/) MBC-00-... (Rp 1 & 1 1/4) 0 10 8 6 5 4 1 Based on + 15 C, 101 mbar, dry 4 5 6 7 8 9 10 0 0 40 100 00 Vn [m /h] Luft / Air / Aria dv = 1,00 4 5 6 7 8 9 10 0 0 40 100 00 Vn [m /h] Erdgas/Natural gas/gaz Naturel/Gas metano dv = 0,65 6 8
Volume flow pressure difference characteristics in steady state with microfilter. MBC-700-... 00 00 150 100 50 40 0 0 Recommended operating range MBC-700-... (Rp 1) MBC-700-... (Rp 1 1/ & ) MBC-700-... (Rp 1 1/4) 10 8 6 5 4 1 Based on + 15 C, 101 mbar, dry 4 5 6 7 8 9 10 0 0 40 100 00 Vn [m /h] Luft / Air / Aria dv = 1,00 00 50 4 5 6 7 8 9 10 0 0 40 100 00 Vn [m /h] Erdgas/Natural gas/gaz Naturel/Gas metano dv = 0,65 7 8
GasMultiBloc Combined servo pressure regulator and safety shut-off valves MBC-00-SE MBC-700-SE MBC-100-SE MBC-00-N MBC-700-N Volume flow pressure difference characteristics in steady state with microfilter. MBC-100-... Recommended operating range Based on + 15 C, 101 mbar, dry f = V gas used = Air density Density of gas used V air x f Gas type Natural gas Town gas Liquid gas Air Density [kg/m ] 0.81 0.58.08 1.4 dv 0.65 0.47 1.67 1.00 f 1.4 1.46 0.77 1.00 We reserve the right to make any changes in the interests of technical progress. Head Offices & Factory Karl Dungs GmbH & Co. KG Siemensstraße 6-10 D-76 Urbach, Germany Phone +49 (0)7181-4-0 Fax +49 (0)7181-4-166 Postal address Karl Dungs GmbH & Co. KG Postfach 1 9 D-7 Schorndorf, Germany e-mail info@dungs.com Internet www.dungs.com 8 8