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Home » hydronic controls

Articles Tagged with ''hydronic controls''

John Siegenthaler: How to wire fresh air dampers

The 2018 version of NFPA 54 prescribes methods for providing this air into confined spaces using one or two openings to outside space.
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
March 27, 2018

A simple circuit to coordinate fresh air dampers.


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Wireless climate control from Uponor

Uponor Climate Control Zoning System II (AHR Expo Preview)

January 24, 2018

Uponor’s Climate Control Zoning System II features an innovative technology called autobalancing.


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Legend HS-808 Hydraulic Separator with LEGEND Connect

Legend HS-808 Hydraulic Separator with LEGEND Connect

October 19, 2017

Legend’s HS-808 Hydraulic Separator with LEGEND Connect is ideal for mechanical room piping.


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Flood Buzz Pro

Flood Buzz Pro

December 21, 2016

Flood Buzz Pro’s water leak alarms work as “pain point” marketing tools.


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Options for achieving hydraulic seperation between circulators

Keeping the peace.
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
October 5, 2016

Twenty years ago, the contemporary approach to prevent interference between simultaneously operating circulators in a hydronic system was primary/secondary piping.


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Grundfos hydronic zone control family

Grundfos hydronic zone controls

July 30, 2016

The expandable Grundfos UPZC series of zone controls manage circulator and boiler control in residential hydronic heating systems.


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Striving for hydronic ideals in heating systems

Let’s start with heat exchangers.
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
May 23, 2016

Strive for what seems impossible at the present.


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The Glitch & The Fix, May 2016 -- Glitch drawing

Supplying two loads for multiple boiler system

The Glitch & The Fix, May 2016
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
May 16, 2016

An installer has piped a multiple boiler system to supply two loads.


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Dan Holohan's "What Hydronics Taught Holohan"

Holohan's hydronics industry memoir

March 29, 2016

“What Hydronics Taught Holohan” is Plumbing & Mechanical columnist Dan Holohan’s 374-page memoir.


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March 2016 The Glitch and The Fix -- Glitch drawing

Modified primary/secondary hydronic piping system

March 2016 The Glitch and The Fix
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
March 18, 2016

An installer wants to achieve hydraulic separation between three zone circulators. He also wants to have the same supply water temperature to each zone, so he pipes up what he calls a “modified primary/secondary system.”


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