North Pole Middle School
North Pole Middle School was built in 1975. The mechanical system of the facility was designed around 24 residential style modular boilers. At the time, the system was considered to be the best way to modulate the firing rate to match demand; however, the design never achieved the intended energy savings. The system is now outdated and parts are frequently unavailable. At times, the school district has had to remove parts from other boilers in order to fix problems. The remainder of the system is also reaching the end of its expected lifespan. The piping for the hydronic system was built with Victaulic grooved pipefittings and changes in system temperature cause the gaskets to leak. To avoid leaks, the school district has to operate the system at a hot temperature during the summer, which is extremely inefficient and costly. Furthermore, the existing Direct Digital Control System (DDC) is an outdated Andover 256 system, which is no longer supported by the manufacturer.
Bell Design Group performed an assessment of the mechanical system in the summer of 2008. The scope of work below was derived from the Bell Design Group Assessment.
Scope of Work funded by Proposition #2:
Aging boilers will be replaced with high efficiency boilers and/or emerging alternate heat sources. The existing Direct Digital Control System (DDC) will be replaced with a system that includes C02 monitoring. The domestic hot water system and plumbing fixtures will also be replaced.
|North Pole Middle School||Modular Boilers|