Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
We usually design geothermal system with a geothermal loop and a heat pump loop (primary, secondary pumping scheme). When I get runaway plant temps it is usually on the heat pump loop and usually has to do with low flow issues. Typically the water to water heat pumps request design flow at all times, so ensure that the heat pump loop is accounting for the correct flow rate from that object. Also, do you have the zone WAHP coil water flow mode set to 1-Cycling?
If so, I would recommend the following:
