Tankless coil

Tankless coil

Heat exchanger used for heating water that is integrated into a boiler. Effective in the winter months when the boiler is operating for space heating, tankless coils waste energy in warmer months, since they require the boiler to fire up every time hot water is drawn.
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Figure 2 illustrates the results of measurements made on one system: a heating boiler with an internal tankless coil. As this figure shows, the input/output relationship is nearly linear, and this has also been the result in investigations done as part of the SPC 155 work on larger commercial boilers under heating-only load conditions.
The highest idle loss was found in a poorly insulated boiler with an internal tankless coil arrangement and an operating control which maintained a boiler temperature of 160[degrees]F (71.1[degrees]C) all summer.
For the units tested, the DHW-only efficiency was found to vary from a low of 25% (tankless coil boiler with a high idle loss) to a high of 75% (indirect DHW, well insulated, thermal purge control).
The tankless coil boiler is often criticized as having low efficiency for DHW production.
The tankless coil heater and the indirect (boiler-dependent) water heater utilize energy from the boiler.
"When you submit an application for a tankless coil, you get a letter back saying you need a separate hot water heater," Blaser said.
ROI Marketing will represent DHT in PA, DE, MD, DC, VA and WV for the Techtanium, Indirect Water Heaters, Brazed Plate Heat Exchangers, Tankless Coils, E-ZEE Flow Pool Heaters, HVAC Coils (cased, uncased and custom) product lines.
He said there are many tankless coils in heating systems in Gardner.
of Watertown, which manufacturers the coils, believes the problem is caused by the city's water and no longer gives warranties for its tankless coils in Gardner.
Strout, is that when tankless coils fail in other communities, they mostly develop one pinhole.
John Stack will represent DHT in CT, MA, ME, NH, RI, VT for the Techtanium, Indirect Water Heaters, Brazed Plate Heat Exchangers, Tankless Coils, E-ZEE Flow Pool Heaters, HVAC Coils (cased, uncased and custom) product lines.