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Product Documentation:

GMH-A4 Gas Pressure Switch - 120V and 24V by Dungs

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Item Code: GMH-A4

GMH-A4… SPDT pressure switch requires no auxiliary power. The GMH-A4… is suitable for making and/or breaking a circuit when the set point is exceeded. A tripped switch is indicated by a neon light after set point is exceeded. Manual reset is required to reset the switch.

The GAO-, GMH- and GML-A4… ventless pressure switches are adjustable pressure switches for automatic burner controls.

These pressure switches are suitable for making and/or breaking a circuit when the medium pressure changes relative to the set point. The set point can be set in the field by an adjustable dial with an integrated scale. Test nipple integrated in metal housing to verify set point.

Application

The GAO-, GMH-, and GML-A4… pressure switch is recommended for industrial and commercial heating, ventilation and air-conditioning systems.

The GAO-, GMH-, and GML-A4… pressure switch is suitable for dry natural gas, propane, butane, air and other inert gases. Suitable for up to 0.1 % by volume, dry H2 S.

A “dry” gas has a dew point lower than +15 °F and its relative humidity is less than 60 %.

CSA Certified

• CSA C22.2 No. 13 and No. 0

• Certification file # 201527