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Tekmar now offers 2-zone and 3-zone pumps, and 3-zone and 5-zone valves. The newly added switching relays and zone valve controls are compatible with all low-voltage thermostats and offer a variety of benefits.
When I look at any replacement hydronic boiler project, my tenet is always to assume the existing system is installed improperly. I like to pretend I am a famous detective, such as Sherlock Holmes, and my job is to uncover the hidden mistakes.
Danfoss’ OJ ETO2 snow-melt controller offers an intelligent all-in-one control solution for ice and snow melting suitable for any application which uses hydronic or electric heating, including driveways, parking lots, sidewalks, stairs, ramps and bridges.
I like working with the control techs in our industry. They have such a passion for their craft. If left alone, they will control or monitor everything that moves, slides, shakes or switches. However, I do rein them in a bit when controlling a hydronic heating system. Several hard limits and a couple danger zones should be heeded. Of course, these should be verified with the boiler manufacturer.
The new modulating or stage-fire VERSA IC boiler control from Raypak fully integrates temperature control, ignition, safety and individual fault monitoring