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Ships within 48 hours · Estimated delivery Sep 21 - Sep 26
Drop-in Replacement: Specifically designed to replace Armstrong 46K88 and R47429-001
Simplified Wiring: Equipped with a 1-meter halogen-free appliance cable for efficient installation in tight plenum spaces
Enhanced System Logic: Restores full functionality to specialized operational modes including auto-restart and dehumidification
Common Technical Questions What is the LRA rating for the ZR44K5E-PFV-800
two flashes indicate a pressure switch fault
Tekmar Controls 521 Thermostat 318172-701 Drop-in Replacement: Specifically designed toThe Tekmar 521 Programmable Thermostat is a versatile microprocessor based control designed for precise single stage heating, two stage heating with fan, or one stage heating one stage cooling applications. Engineered for 24V AC DC systems, this unit supports hydronic radiant floor heating, baseboard convection, and forced air systems. The 7 day programmable schedule allows for four distinct events per day, optimizing energy cycles without
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