DUNGS GGAO...A4 - Pressure Switches for gas, air, flue, exhaust gases and hydrogen (US/CA)

[{"filename":"ggao-a4_datasheet_us_275905.pdf","text":"Pressure Switch\n Gas-to-Gas Differential\n\n GGAO-A4…\n\n\n\n\n CSA Certified\n • CSA C22.2 No. LR 53222\n • Certification file # 201527\n\n Commonwealth of Massachusetts\n Approved Product\n • Approval code G3-0106-191\n • Gas pressure switch\n\n Codes and Standards\n This product is intended for instal-\n lations covered by but not limited to\n NFPA 85, NFPA 86, CSD-1, ANSI\n Z83.4, ANSI Z83.18, ANSI Z21.13,\n CSA B149.1, CSA B149.3 and\n CSA B149.6.\n\n DUNGS is an ISO 9001\n manufacturing facility.\n\n\n\n\n Description Application\n The GGAO-A4… ventless differential The GGAO-A4… differential pressure\n pressure switch is an adjustable, gas- switch is recommended for industrial\n to-gas differential pressure switch for and commercial heating, ventilation and\n automatic burner controls. air-conditioning systems.\n\n These pressure switches are suitable for The GGAO-A4… differential pressure\n making and/or breaking a circuit when switch is suitable for dry natural gas,\n the differential pressure changes relative propane, butane, air and other inert\n\n\n\n\n GGAO-A4 Sales Brochure • P/N 275905 • Ed. 03/26\n to the set point. The set point can be set gases. Suitable for up to 0.1 % by vol-\n in the field by an adjustable dial with an ume, dry H2S.\n integrated scale. Test nipple is integrated\n in metal housing to verify set point. A “dry” gas has a dew point lower than\n +15 °F and its relative humidity is less\n than 60 %.\n\n\n\n\n1…6\n\fGGAO-A4… SPDT gas-to-gas differential gas pressure switch requires no auxiliary power. The GGAO-A4… is suitable\nfor making and/or breaking a circuit when the set point is exceeded or undershot. Automatic reset when pressure returns\nbelow or above set point.\n\nSpecifications\nMax. operating pressure GGAO-A4-2,-3,-5,-6 7 PSI (500mbar)\nMax. body pressure 15 PSI (1033 mbar)\nPressure connection – 1/8\" NPT threaded connection may be used as a vent connection.\n + 1/4\" NPT female thread centered underside of housing.\nTemperature range GGAO Ambient temperature -40 °F to +153 °F (-40 °C to +67 °C)\n Medium temperature -40 °F to +153 °F (-40 °C to +67 °C)\nMaterials Housing Aluminium\n Switch Polycarbonate\n Diaphragm NBR-based rubber\n Switching contact Gold\nElectrical ratings AC eff.\t\t min. 24 V max. 240 V\n DC \t\t min. 24 V max. 48 V\nNominal current Standard with Gold (Au) contact ratings\n • DC min. 5 mA @ 5 VDC\n • DC max. 20 mA @ 24 VDC\n Contact ratings if more than 20 mA @ 24 VDC applied to contacts\n AC 10 A resistive @ 120 VAC\n AC 8 A inductive @ 120 VAC\n DC min. 20 mA @ 12 - 48 VDC\n DC max. 1 A @ 12 - 48 VDC\t\t\nIndication light 0.30 W energy consumption (optional, not standard)\nElectrical connection Screw terminals via 1/2\" NPT conduit connection\nEnclosure rating NEMA Type 4\nSetting tolerance ±15% switching point deviation referred to set point. Adjusted as pressure rises\n or as pressure falls, vertical diaphragm position.\nVent Limiter Incorporates a vent limiter as per ANSI Z21.18 / CSA 6.3 and limits the escape of\n gas to less than 2.5 CFH of natural gas at 7 PSI if internal switch diaphragm ruptures.\n\n\n\n\n 2…6\n\f Dimensions inch (mm)\n GGAO\n\n\n\n\n Integrated 1/8\" test nipple\n +1/4\" NPT pressure connection -1/8\" NPT\n pressure connection\n\n\n\n –\n\n\n\n\n NPT 1/2\"\n conduit 4 X Ø 0.16(4,2)\n connection for M4 screws\n\n\n\n\n3…6\n\fDefinition of switching\nhysteresis ∆p\nThe pressure difference between the\nupper and lower switching pressures\n\n Pressure\n at meter Setpoint tolerance\n Upper switching\n pressure\n\n\n\n\n Switching hysteresis Δp\n Falling\n\n\n Adjustment as\n Rising Lower switching\n pressure rises pressure\n\n\n\n\nSwitching function\n\n As pressure rises above\n set point:\n 1 NC opens, 2 NO closes\n\n As pressure falls below\n set point:\n 2 NO opens, 1 NC closes\n\n Medium Pressure\n\n\n\n\n 4…6\n\f Installation position\n\n\n\n\n Standard installation position\n\n\n\n\n When installed horizontally, the pressure switch switches at a\n pressure higher by approximately 0.2 in. W.C. (0.5 mbar).\n\n\n\n\n When installed upside down, the pressure switch switches at a\n pressure lower by approximately 0.2 in. W.C. (0.5 mbar).\n\n\n\n\n When installed in other positions, the pressure switch switches at pressure\n deviating from the set reference value by max. ±0.2 in. W.C. (0.5 mbar).\n\n\n\n\n NOTE: Always calibrate the\n switch in the desired mount-\n ing position\n\n\n\n\n5…6\n\f Pressure Switch\n Gas-to-Gas Differential\n\n GGAO-A4…\n\n\n\n\nType Version Order No. Setting range Switching Factory\n in. W.C. hysteresis Calibration\n in. W.C.\nGGAO-A4… GGAO-A4-4-2 271329 0.16 - 1.20 ≤ 0.12\npressure switch GGAO-A4-4-3 271330 0.40 - 4.00 ≤ 0.20\n GGAO-A4-4-5 271331 2.00 - 20.00 ≤ 0.40\n GGAO-A4-4-6 271332 12.00 - 60.00 ≤ 1.2\n\nAccessories for pressure switch Order No.\nReplacement cover (screws not included) 228732 (for GGAO switches)\nScrew for replacement cover 237675\nPG 11 - 1/2” NPT conduit adapter 220566\nM 20 - 1/2\" NPT conduit adapter 240671\n120 VAC neon light (yellow) 244156\n24 VAC/VDC light (yellow) 244157\nDIN connector (female plug) 210318\nDIN connector (male plug) 219659 (for GGAO switches)\nWe reserve the right to make any changes in the interest of technical progress.\n\n\n\n\n Karl Dungs, Inc. Karl Dungs GmbH & Co. KG\n…