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Always verify the model and series of the unit before installation
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maintaining the pressure drops specified for commercial and industrial unit heaters
Tekmar Controls 403 Control 321042-401 signs of water leaking ontoThe Tekmar Controls 403 is a sophisticated 24Vac tN2 House Control designed for multi zone hydronic systems requiring high precision management of outdoor temperature reset and indoor temperature feedback. This microprocessor based hub effectively coordinates boiler control, domestic hot water (DHW), and mixing valve operations through a centralized tekmarNet 2 bus. Built to drive up to 4 zone pumps on board, the 403 supports single stage, two stage,