Description
AZC 40P is a 4 zone control board with Zone #1 being priority, designed for use with 2-wire thermostats
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Both 40P and 60P are designed with filtered, slow closing circuitry that eliminates humming and water hammering from rapid closure
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When switched on, once indirect water heater aquastat is fulfilled, system returns to normal heating zone automatically
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50 VA MB Power supplies also available for use with 3 wire thermostats
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