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Precision Tuning: Features high-visibility Sight-Set calibrated pressure scales for accurate setpoint adjustments without removing the cover
The Emerson Alco 048221
this part ensures the inducer motor maintains the required vacuum pressure before allowing the ignition sequence to proceed
Includes a precision-machined liquid propane orifice for accurate fuel metering
Johnson Controls A421AEC-01 Temperature Control Els PW 17895 Precision Tuning: Features high-visibility Sight-SetThe Johnson Controls A421AEC 01 is a high performance single stage electronic temperature control designed for heavy duty HVACR applications requiring precision and environmental protection. This unit features a versatile 120 240 VAC power supply and a wide temperature control range of 40? F to 212? F ( 40? C to 100? C), making it ideal for everything from walk in freezers to boiler systems. Built with a NEMA 4X watertight enclosure, the A421AEC 01 is
