39 open loop geothermal piping diagram
Closed-loop geothermal systems utilize plastic pipes and fittings that are buried in the ground in a variety of configurations, or submerged in water. The network of pipe and fittings, sometimes referred to as the ground-coupled heat exchanger, or simply the ground loop, is usually connected to a mechanical fluid-source heat pump unit. Boiler circulator(s) must be rated for open loop applications. Do not use cast-iron circulators. 3. Boiler circulator(s) operate continuously. 4. The minimum pipe size for connecting to a water storage tank is 1 ½". 5. The minimum pipe size for connecting the boiler is 1 ½" for the Mod Con 300 VWH and 2" for the 500 and 850 models. 6. 1 Closed-Loop Ground Heat Exchangers 1A. (1996) INSTALLATION PERSONNEL AND TRAINING REQUIRED 1A.1 (2000) The Loop contractor, or contractor designate, must have a current IGSHPA accreditation, having Open loop geothermal piping diagram