Radiant & Hydronics

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The luxurious Wythe Hotel in Brooklyn, New York, was once a waterfront barrel and rope factory. This renovated structure now has 72 boutique guest rooms. As part of the update, it was important to retain the character of the original turn of the century building, which opened in 1901. In order to convert the cold, utilitarian factory space into comfortable rooms, a major mechanical update was required. By adding radiant floor heat, they were able to meet and exceed the comfort benchmark of a modern-day hotel while balancing for energy efficiency.

Integrated Dynamic Control (IDC) is a PC-based intelligent control system delivering optimized comfort and maximized efficiency by coordinating HVAC, IAQ and hydronic systems in one control.

Morris had me on the phone. It was 1974 and he was calling from Brooklyn, New York. I had a waxed handlebar mustache that year, and my workmates at the manufacturers’ rep were calling me Rollie Fingers because he was pitching for the Oakland Athletics in the World Series.

Lochinvar’s CREST with Hellcat Combustion Technology commercial boiler is available in eight models ranging from 999,000-6,000,000 Btu/h.

Ever since the RPA was formed, members have taken advantage of the great benefits the alliance has to offer, such as codes and standards advocacy, a job center network, obtaining and creating valuable education, the annual Radiant Flooring Guide, newsletter subscription, discounts for IAPMO products and services, access to webinars and more. RPA members are professionals from all facets of the radiant profession, including manufacturers, installers, engineers, architects, students, apprentices and inspectors.

Last month, we discussed the role of buffer tanks in combination with air-to-water and water-to-water heat pumps that operate as “on/off” devices. The key concept was to turn the heat pump on and off based on changes in the buffer tank temperatures and not based on thermostats calling for heat.

The very first installation of the Mikrofill 3 hydronic pressurization unit in North America took place recently in a mechanical room of an assisted- and independent-living community in Southwest-suburban Chicago. You might say the flower of this innovation grew from the soil of an old industry friendship.

Can you spot at least six design or installation details that are going to create problems?

In 1885, when you could still buy a milk cow for $29.70, Albert Butz, a Swiss immigrant living in St. Paul, Minnesota, invented what he called the damper-flapper. He patented it the following year. The flapper opened a damper that allowed outside air to enter a coal-fired home furnace. This increased the oxygen in the furnace and made the fire burn hotter. When the temperature rose to a desired point, the damper closed.

More and more hydronic heating and cooling systems are being designed around air-to-water and water-to-water (geothermal) heat pumps. When the heating distribution system is extensively zoned, a buffer tank is typically installed between the heat pump and that distribution system.