ESVT provided engineering services to renovate the HVAC systems at Neshobe School in Brandon, Vermont. This school consists of two separate buildings and additions. A central oil-fired hot water boiler plant serves both buildings. The Library was heated by a gas fired furnace. Classrooms were ventilated by poorly functioning unit ventilators and a pneumatic control system oversaw operation of equipment. Total square footage of both buildings is 41,000 square feet.
The scope of work included adding a 500 mbh Froling wood pellet boiler and a 26 ton exterior pellet storage silo. Two 300 gallon thermal storage tanks where included to improve pellet boiler system efficiency. The two oil fired boilers remain as a back-up heat source. Unit ventilators in Classrooms were replaced with vertical type unit ventilators with a heat recovery wheel. Ventilation was accomplished with new central air-to-air heat recovery units and new ductwork distribution system for common spaces such as the Gym, Offices, etc. The pneumatic control system was replaced with a modern direct digital control system which is accessible from the internet.
The school now complies with current indoor air quality standards. The school used about 10,000 gallons of fuel oil per year. Renovations are anticipated to save about 9,000 gallons per year in fuel oil consumption.