(A) Ground source heat pump systems.
(1) Zoning districts. Ground source heat pump systems in accordance with the standards in this section are allowed as a permitted accessory use in all zoning districts.
(2) System requirements:
(a) Only closed loop ground source heat pump systems utilizing heat transfer fluids as defined in § 152.185 are permitted. Open loop ground source heat pump systems are not permitted.
(3) Setbacks.
(a) All components of ground source heat pump systems including pumps, borings and loops shall be set back at least five feet from interior side lot lines and at least ten feet from rear lot lines.
(b) Above-ground equipment associated with ground source heat pumps shall not be installed in the front yard of any lot or side yard of a corner lot adjacent to a public right-of-way and shall meet all required setbacks for the application district.
(4) Easements. Ground source heat pump systems shall not encroach on public drainage, utility roadway or trail easements.
(5) Noise. Ground source heat pump systems shall comply with Minnesota Pollution Control Agency standards at all property lines.
(6) Screening. Ground source heat pumps are considered mechanical equipment subject to the requirements of this chapter.
(7) Abandonment. If the ground source heat pump remains nonfunctional or inoperative for a continuous period of one year, the system shall be deemed to be abandoned and shall constitute a public nuisance. The owner shall remove the abandoned system at their expense after a demolition permit has been obtained in accordance with the following:
(a) The heat pump and any external mechanical equipment shall be removed.
(b) Pipes or coils below the land surface shall be filled with grout to displace the heat transfer fluid. The heat transfer fluid shall be captured and disposed of in accordance with applicable regulations. The top of the pipe, coil or boring shall be uncovered and grouted.
(8) Permits. A building permit shall be obtained for any ground source heat pump system prior to installation.
(Ord. 2012-1133, passed 3-5-12)