Plumber Product Spotlight: Laars Heating Systems

High-efficiency modulating boiler designed for easy installation and access
Plumber Product Spotlight: Laars Heating Systems
Laars NeoTherm high-efficiency boiler

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NeoTherm high-efficiency commercial modulating condensing boilers from Laars Heating Systems Company are 95 percent efficient, fully modulating and contractor-friendly. The direct-vent, sealed combustion boiler has an ASME stainless steel heat exchanger, low NOx emissions (10 ppm NOx). Available in natural gas or LP-fired models, advanced features include full diagnostics and pull-out electrical panel for easy access.

“There are many 95 percent efficient boilers available today, so when we designed the NeoTherm line we spoke with installing contractors about desired features. Their input led us to include touch-screen interfaces, easy-to-use controls with advanced feature sets, as well as to place all of the piping out the top of the NeoTherm,” says Chuck O’Donnell, director of marketing for Laars. “Top piping results in easier installations since most system piping goes along the ceiling above the boilers. It also allows the boilers to be installed close to each other in multiple unit installations. Serviceable components, such as the heat exchanger, gas valves and blowers are located upfront for easy access.”

Available in 285 through 1,200 MBH sizes as a modulating boiler (5-to-1 turndown; 10-to-1 for 1,000 and 1,200 sizes) or volume water heater, features include a color touch-screen control panel and optional Vari-Prime variable-speed pump control that optimizes efficiency by matching boiler input modulation to pump flow.

“Basically, when a NeoTherm modulates up and down, the Vari-Prime system will match the variable speed boiler pump’s flow rate to the flow required through the boiler based on the boiler’s firing rate,” O’Donnell says.

“Often people will install a one-speed pump that matches the maximum firing rate of the boiler. So even if your boiler modulates down, the pump will still be running at full rate. And pumps are very inefficient when they’re running at full operating load,” he says. “Boilers rarely fire at 100 percent – only the coldest days of the year. The rest of the year the boilers are only firing at 20, 60 or 80 percent. And that’s when pumps are most efficient. The thought behind that is since we’re optimizing the boiler at 95, 96 percent efficiency, how can we work with other components in the boiler room to maximize efficiency? The pump was an obvious target, which can consume a lot of energy, and we make to have a system that can work well with a modulating pump.”

An integrated control system with PID logic governs ignition, outlet water temperature, indirect water heater functions, outdoor resent, stages up to eight boilers with the standard control and integrates with other controls for multiple boiler sequencing and building automation systems. 800/900-9276;


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