Pentair Air Flow Switch For MasterTemp And Max-E-Therm Heaters | 42001-0061S Pentair EasyTouch Transformer When laying out the deck

When laying out the deck work

Water Chemistry Guide:Included in the set is a waterproof copy of the Pool and Spa Water Chemistry Guide

Restores Pressure and Flow

Application of Black Algaetrine: Apply Black Algaetrine at a rate of 12 ounces per 10

fdxlbvs1930 fits all h150fdn through h500fd heaters

Pentair Air Flow Switch For MasterTemp And Max-E-Therm Heaters | 42001-0061S Pentair EasyTouch Transformer When laying out the deckThe OEM Pentair air flow switch (AFS), which senses the pressure drop across the air metering orifice. The air flow switch (AFS) senses the pressure drop across the air metering orifice. As soon as there is sufficient air flow, the AFS closes, closing the circuit to the hot surface igniter (HSI), which ignites the fuel mixture. On a call for heat, the blower and HSI are energized. In about 20 seconds, the gas valve opens and ignition occurs. The HSI