Has anyone heard how this will affect the loop requirements for these units? I wonder if the variable speed compressors equate to longer run times for the units. This would limit recovery time for the loop field. Any thoughts?
training I just talked to our rep yesterday and he's having training for it in the next couple of months. I'll be finding out. I always chuckle when people label Daikin & their ilk as "Geo-killers" technology is always improving in the air & water source sectors so as Daikin achieves COP's of 3 the following year geo's are getting 5.
Just the fact that they are more efficient should require longer loops. It will be interesting to see how the software handles this.
I am with Zac on this in regard to the Geo Killers. I read with a sadistic grin the claims about the kelix/ helix system last month and felt the same as I did about Rehau's double looped pex offering. The market is to volitile to believe in "magic btu's". Someday we will see improvements in the exchanger but I am leary of the glitz and glam without the data. Eric
quick comments ===================== These boards and posting show there is always room for improvement. It occurred to me after buying one of these heat pump units, that "open loop" systems would operate more cheaply if they heated large hot water preheater tanks first before using well water. Variable speed may work out, but electronics will need top notch surge protection to protect high quality expensive, delicate, components. They will be more suitable to run off of emergency generators because of the reduced start up amperage and because a generator produces a perfect sine wave. I currently work with refrigeration machines that run in magnetic bearings and cut energy consumption 45 - 50%, exciting technology, but that is a topic for a different website.
Since loops can outlast multiple heat pumps, it would be a good idea for homeowners to keep detailed loop specs near their unit. This would help geo professionals and future homeowners to determine if their existing loop is adequate (or requires modification) for a more efficient system. I'm going to put a copy of our loop details at the flow center.
Great idea! We run into loops regularly that require service, or where the homeowner is replacing a unit, etc. and without record of the specs of the loop field we are operating blind. There have been multiple situations where our only option was to abandon and replace the original loop. A rather large expense that could easily be avoided. It is a reminder of how important it is to keep the most detailed record of the install possible.
