Conn. Agencies Regs. § 25-128-39b - Closed-loop geothermal system fluid
(a) All chemicals
used or added to fluids circulating through a closed-loop geothermal system for
heat exchange, and the amount of chemicals used or added, shall be those
specified by the manufacturer and shall be subject to industry approved
standards for geothermal system efficiency.
(b) A well contractor shall only use the
following closed-loop geothermal system fluids in closed-loop geothermal
systems:
(1) The refrigerants commonly
referred to as R-134A, R-407C, and R-410A;
(2) Drinking water, as defined in section
19-13-B102
of the Regulations of Connecticut State Agencies;
(3) Heat transfer fluids containing potable
water combined with a maximum of twenty-five (25) per cent propylene glycol
that has been approved by the federal Food and Drug Administration;
and
(4) Other geothermal system
fluids or additives approved by the department and the Department of Public
Health.
Notes
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