Hydronic heat - Articles - Page 4 | Plumbing & Mechanical

Oil Heat Cares helps keep the heat on

OESP members donate equipment and installations to help those in need.

May 13, 2019

Since its inception in 2004, Oil Heat Cares — a not-for-profit foundation — has helped people and organizations in need with the replacement of their oil heating appliances.

Dan Holohan: The metal manometer

A simple mistake led to the invention of the common pressure gauge.

Dan Holohan

May 13, 2019

At first, Eugene Bourdon was annoyed when he saw what his worker had done to the metal tube. The tube was in the shape of a spiral and it was to go into a laundry machine they were building in Bourdon’s shop.

John Siegenthaler: Btus in a box

There’s more to comfort than balanced energy flows.

John Siegenthaler, P.E.

May 10, 2019

Have you noticed the strong interest in cold-climate air-source heat pumps over the last couple of years?

John Siegenthaler to host modern hydronics educational session

April 9, 2019

The educational event runs from 7:30 a.m. to 5 p.m. May 22 at Landmark College in Putney, Vermont.

NIBCO adds to its line of hydronic heating fittings

March 29, 2019

The additions include forged bronze vent elbows, a wrot copper extended elbow and a wrot copper fin tube stiffener. All of the products are lead free.

Slant/Fin commercial boiler

March 27, 2019

The lower pressure drop on the water side contributes to the compact size and the lower pressure on the flue gas side contributes to the longer approved vent lengths (up to 481’).

The Glitch: Pipe it just like any other boiler

John Siegenthaler, P.E.

March 19, 2019

An installer sets up a zoned distribution system as shown below. To keep it simple, he uses the same size piping for the headers and all the distribution circuits. The heat source is a low-mass, copper-tube boiler with high-flow resistance.

The Glitch and Fix: Lose the loop

The Glitch and Fix: February 2019

John Siegenthaler, P.E.

February 28, 2019

The schematic in Figure 1 represents a drawing I recently reviewed for a proposed system that was to supply three zones of finned-tube based, two zones of low-temperature radiant panel heating, and an indirect domestic water heater.

Weil-McLain Stainless Steel Vertical Firetube boiler

January 15, 2019

Weil-McLain’s Stainless Steel Vertical Firetube (SVF) boiler features industry-leading thermal efficiency up to 97.1%, easy installation and maintenance, the intuitive and user-friendly Unity control system, and Weil-McLain boiler design reliability and longevity.