The centralized geothermal system is simple to maintain. The design team developed a prefabricated pump stand that included two (2) inline pumps stacked on top of one other. This saved valuable space in the mechanical room, and allowed technicians to service this equipment in an efficient manner with ease. One (1) pump is redundant of the other, each served by dedicated variable frequency drives, which allows for service or replacement of one pump while the other handles the load.
The piping system in the well fields and in the building were predominately made of HDPE plastic piping. The pump stand, which included pumps, minimal piping, strainers, isolation valves and related piping accessories were either made of stainless steel, bronze, brass or steel with an internal coating system to prevent corrosion and loose iron in the system. This was similar for the heat pump piping runouts. A closed system water treatment system was included in the design, but with no exposed steel to the fluid, the amount of treatment was very limited.
Makeup water meters were added to the system design for each well field. The makeup water to each well field allows the facility team to immediately identify the loss of water in a system, the signs of a leak, after which the team can search for the source and repair the leak as soon as possible.