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It is compatible with both LP and Natural Gas pilot burners like the E31-12
which is essential for protecting the interior of the air handler and the surrounding structure
It is commonly used in York air conditioning units and is suitable for retrofit or replacement applications where consistent metering performance is required
Professional HVAC FAQ:
and localized heat exchangers
McDonnell & Miller 157S-R-M Pump Controller Els PW 17895 It is compatible with bothThe McDonnell & Miller 157S R M (Part Number 177306) is a heavy duty, float operated low water cut off and pump controller designed for commercial and industrial steam boilers. This unit features an integral water column and alternate tappings to simplify installation on various boiler configurations. The 157S R M is functionally identical to the 172817, utilizing a snap acting SPDT switch that eliminates the need for mercury while providing reliable
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