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Common Questions Is the Lennox 37K63 interchangeable with the 37K6301
It maintains the same voltage requirements and physical mounting parameters for a seamless swap
Tight Close-off: Rated for zero leakage
streamlining the replacement process for service professionals
Tekmar Controls 400 Control R-410A Common Questions Is the LennoxThe Tekmar Controls 400 is a high performance tN2 House Control designed for precise hydronic heating system management. This 24Vac microprocessor based controller integrates one outdoor reset water temperature with Domestic Hot Water (DHW) and setpoint capabilities, allowing for seamless coordination between the heat source and a 4 zone valve layout. Engineered as the hub for tekmarNet 2 (tN2) communication, this unit optimizes boiler modulation via
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