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Question re: TN4 from Tekmar
... from what I can tell, the TN4 system consists of a 2-wire bus for communication purposes and 24VAC relays for actuators / interfacing with extant building control accessories such as manifold actuators. Here is my question:
From what I can tell but I'd like to confirm: is it possible to place multiple TN4 thermostats on the same bus on a zone manager such as the 337? I ask, since I am considering splitting zone in my house, which would entail putting 24VAC actuators on the existing RFH manifolds. Ideally, the zone manager would be smart enough to turn on the valve to the manifold, whether it's one or both thermostats are calling for heat. The thermostats in turn would control the actuators.