DUNGS MBC-VEF... (US/CA)

[{"filename":"mbc-se-vef-1000-2500-4000-602-l_datasheet_us_256927.pdf","text":"GasMultiBloc®\n Combined servo pressure regulator\n and safety shut-off valves\n\n MBC-... 1000/602(L)\n MBC-... 2500/602(L)\n MBC-... 4000/602(L)\n\n\n\n\n Two normally closed automatic\n shutoff valves and servo regulator\n in one housing. Each valve has the\n following approvals.\n\n UL Listed / Recognized\n • UL 429\n • File #MH16727\n\n CSA Certified\n • ANSI Z21.21 / CSA 6.5\n • C/I marking\n • ANSI Z21.18 / CSA 6.3\n • File # 1641073\n\n FM Approved\n • FM 7400\n • File No. 3046043\n\n Commonwealth of Massachusetts\n Approved Product\n • Approval code G3-1008-119\n\n CSA Certified / FM Approved Models\n • MBC 1000/602 Technical Description The modular system design allows integra-\n The DUNGS multifunctional control MBC... tion of valve proving systems, high and low\n • MBC 2500/602\n integrates filter, two safety shut-off valves gas pressure switches and other system\n • MBC 4000/602 accessories. The compact design allows for\n and servo pressure regulator with the fol-\n lowing functions: high flow rates at low pressure drop.\n UL Listed / FM Approved Models\n • MBC 1000/602L MBC-SE as positive pressure regulator Application\n • MBC 2500/602L MBC-SE S02 as zero governor The DUNGS MBC is recommended for com-\n MBC-VEF as gas / air proportionator mercial heating applications that require two\n UL Recognized / CSA / FM Models each version also features: safety shutoff valves.\n\n\n\n\n MBC... Sales Brochure • P/N 256927 • Edition 2024.04\n • MBC 4000/602L - Dirt trap: Microfilter For SE Versions, the servo pressure regula-\n - 2 fast opening / fast closing safety shut-off tor permits optimal mixing in forced air burn-\n valves up to 5 PSI ers and premix burners in conjunction with\n Codes and Standards mechanical or electronic integrated gas-air\n - Servo pressure regulator with vent limiting\n This product is intended for installa- device regulation units; this applies to modulating\n tions covered by but not limited to ANSI - Outlet pressure ranges: and multi-stage floating operating mode.\n Z83.4, ANSI Z83.18, ANSI Z21.13, SE Version: -0.8 to +120 in. W.C. For VEF Versions, the servo pressure regula-\n UL 795, CSD-1 or CSA B149.1, VEF Versions: +6 to +40 in. W.C. tor permits optimal mixing for gas / air ratio\n CSA B149.3 and NFPA 37. - Precision regulation of outlet pressure regulation.\n - Flanged joints with pipe threads to ISO 7/1\n DUNGS is an ISO 9001 or NPT\n manufacturing facility. - Easy to install\n1…8 - Low weight\n\fFunctional Description\n Schematic diagram MBC...SE\nGas flow\n1.When valves V1 and V2 are closed,\n chamber a is subjected to inlet pres- a b\n sure. p1 R\n pBr\n2.The low gas pressure switch (optional)\n is connected to chamber a.\n If the inlet pressure drops below the M pBr pBr\n intern\n D extern\n setpoint on the pressure switch, the Standard Option\n\n\n switch opens the limit circuit.\n3.Once enabled by the control system,\n valves V1 and V2 open. S\n pamb\n E\n Gas flow is released through chambers\n \"a\" and \"b\". M Working diaphragm a, b Pressure chambers in flow direction\n D Restrictor p Inlet pressure\nClosing function\n 1\n\n\n S Servo diaphragm (Atmospheric) pBr\n Outlet pressure\nUpon interruption of power supply, valves E Setting spring for outlet pressure p Br\n pamb\n Ambient pressure\nV1 and V2, are closed by the closing R Regulator disc\nsprings within <1s.\n\nZero Governor Versions\nIf atmospheric diaphragm ruptures, the\nzero governor regulating disc closes. 16\n 15\n 14\n 11 13\n\n\n\n 10\n 9\n\n\n\n\n 8\n 7\n 6 V1\n\n 5 V2 12\n\n\n\n\n p1 p2\n\n 4\n 3\n 2 17\n\n 1\n\n 18\n\n\n\n\n 1 Pressure regulator unit 8 Plunger V1 15 Solenoid V2\n 2 Regulator spring 9 Solenoid V1 16 Solenoid housing\n 3 Connecting flange 10 PCB 17 Adjustment:\n 4 Coarse and microfilters 11 Electrical connection - Gas pressure p\n Br\n\n\n…