Seller notes

SPDT STRAP-ON AQUASTAT 100/240F The Johnson Controls A19D Series surface mount thermostat is designed for oil fired boilers and space conditioning equipment, with a 100/240F temperature range. This is an outdoor thermostat with coil-operated snap action switches. The differential rating is 10 F degrees (+/- 2.8 F degree) with a visible range scale. The 350 ohm strap-on aquastat is pressure sensitive switch that turns the equipment on when water reaches the float valve, sensing pressure in the li...

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