Well, I got my hands on some mcquay water source heat pumps. They are obviously used, and older, but I want to try to heat a pole barn with them. I have all different sizes, 1 ton to 10 ton units.
These were originally for boiler/tower applications. Glancing through the manual, they want a minimum EWT of 50F compared to the geo units that are 30F cooling and 20F cooling, I assume due to the differences in refrigerant type (410 vs. 22).
Since this is for fun, I was going to run some horizontal loops and see what happens? My problem is, I am going to be close to the 50F temperature year around. Will this only affect performance, as in will not perform up to par, if so, that is OK as I can oversize for my load.
I also learned about a low temperature kit for these but have yet to find any information on such a kit.
Any comments would be appreciated, again this is for fun and for myself, so please keep that in mind.