I am looking to control my three-zone hydronic baseboard heating system with one or more Next thermometers. I currently have a Tekmar 400 controller to reduce quick-cycling of the boiler and three Tekmar 528 thermostats currently. I am considering replacing the Tekmar 528 thermostats. The wires between the thermostats and the controller are labeled IN1 and IN2.

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Maximum Temperature-Fahrenheit 180 Maximum Working Pressure-BAR 12.00 Maximum Working Pressure-PSI 175 Meter Type No Meter Minimum Temperature - Celsius 0.50 Minimum Temperature-Fahrenheit 33 Outlet Connection Size 1 IN Outlet Connection Type Female Threaded Outlet Shutoff Valve Type Quarter Turn Ball Valve Outlet Thread Type NPT

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Hey there,  Just wanted to jump in here to check to make sure that you saw our response. Please let us know if you have any other questions or concerns as I will be locking this in 24 hours.

We haven't heard any updates from you. I'll go ahead and lock this thread. If you're still experiencing problems, feel free to start a new thread and we'll be happy to help.

Wattslf009m2qtManual

I'm so sorry for the delay in our response, but I wanted to hop in here to make sure we addressed your concern. I can definitely understand the confusion when it comes to thermostat issues as it can be very odd to figure out sometimes, but I'm happy to look into this for you.

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This 1 inch Lead Free reduced pressure zone assembly is designed to prevent the backflow of polluted water from entering into the potable water supply due to back siphonage and or backpressure in accordance with national plumbing codes and water authority requirements. Its compact modular design facilitates easy maintenance with a single access cover for in-line repairs. It is ideal for protection in continuous pressure piping applications and at cross-connections identified as health hazards and for contaminants at the service line entrance. This assembly consists of a lead free bronze body, 1 inch NPT end connections, quarter turn ball valve shutoffs with tee handles, top mounted test cocks, two in-line independent check valves, captured springs, and replaceable check seats with an internal relief valve for reduced space requirements.

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nlet Connection Size 1 IN Inlet Connection Size-Metric 25 MM Inlet Connection Type Female Threaded Inlet Shutoff Valve Type Quarter Turn Ball Valve Inlet Thread Type NPT Lead Free YES