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www.fueloilnews.com | FUEL OIL NEWS | MARCH 2015 17 Fuels made in the USA," Dillion said. "It has a crucial spec you want to see for a job like this: a separate, on-demand DHW loop on the boiler with a substantial DHW flow rate, along with high capacity for high efficiency space heating." Unlike the previous cast iron boiler's low efficiency, the new system achieves 95% annual fuel utilization efficiency by incorporating a stainless steel heat exchanger in a condensing design that harvests heat from combustion exhaust rather than losing it out the flue. Efficiency in radiant heating appli- cations particularly gets a boost when return water tempera- ture drops below 130°F—the greater the temperature drop, the more the exhaust condenses to boost boiler efficiency. To allow lower return temperature water to be used, the boiler provides a 5 to 1 turndown ratio. This feature permits the burner to operate with a lower firing rate to avoid raising water temperature higher than needed, which helps improve system efficiency. To ensure that DHW is available for showers and dish- washer, domestic water heating takes priority over the hydronic heating. A separate DHW stainless steel plate heat exchanger inside the unit produces 113 gallons of heated water per hour at 100°F temperature rise at a maximum flow rate of four GPM and a minimum of 0.5 GPM. Easy EnErgy savings during a hard wintEr The "combi" Mascot configuration cut Limoges energy costs drastically. For DHW heating, the ENERGY STAR program estimates that standby losses can represent 10 to 20% of a household's water heating costs year around. Right out of the gate, the Mascot eliminated those loses by getting rid of the old holding tank that was losing heat while sitting in the cold, below-grade basement. The boiler's operational efficiency also saved Limoges a bundle. He calculates that even after one of the hardest win- ters on records—and with record LP fuel prices—he saved about $900 over the winter, with the total fuel bill eight per- cent lower than last year. The pre-assembled control panel, fabricated by Twin Valley, includes the Laars Mascot boiler/water heater combi unit and also includes copper supply and returns, with Taco 007 circs on the supply side, and spigots on the return for easy purging of zones, and for maintenance. A Taco 4900 air eliminator and was piped upstream from the Watts expansion tank, water feed and backflow preventer. MA Oilburner COde ClAss - 4 HOurs – 2 sessiOns (AM-pM) April 1, 2015 NEWTON, MA MA Oilburner COde ClAss - 4 HOurs – 2 sessiOns (AM-pM) April 7, 2015 HINGHAM, MA MA Oilburner COde ClAss - 4 HOurs – 2 sessiOns (AM-pM) April 8, 2015 HYANNIS, MA MA Oilburner liCense ClAss – 4 HOurs April 10, 2015 Beckett TTC, Fiskdale (Sturbridge), MA MA Oilburner COde ClAss – 4 HOurs April 10, 2015 Beckett TTC, Fiskdale (Sturbridge), MA nOrA brOnze Oil HeAting sCHOOl - dAYs – 2 Weeks April 13-24, 2015 Beckett TTC, Fiskdale (Sturbridge), MA riellO Oilburner Mini-CliniC – nigHt – 4 HOurs April 22, 2015 Beckett TTC, Fiskdale (Sturbridge), MA MA Oilburner COde ClAss - 4 HOurs – 2 sessiOns (AM-pM) April 28, 2015 WOBURN, MA MA Oilburner COde ClAss - 4 HOurs – 2 sessiOns (AM-pM) April 30, 2015 SPRINGFIELD, MA MA Oilburner COde ClAss – 4 HOurs May 1, 2015 Beckett TTC, Fiskdale (Sturbridge), MA MA Oilburner COde ClAss - 4 HOurs – 2 sessiOns (AM-pM) May 5, 2015 GREENFIELD, MA MA Oilburner COde ClAss - 4 HOurs – 2 sessiOns (AM-pM) May 12, 2015 PEABODY, MA CONTACT: GEORGE LANTHIER 508.421.3490 VOICE | 508.421.3477 FAX www.FiredragonEnt.com