This has probably been covered before, but any opinions on what works for some of you all out there concerning what size copper heat exch coil and how l many feet in length is needed in my non pressurized tank to give good domestic hot water perfomance. The domestic water supply will be flowing through the coils. 50 lbs of pressure max.
Is 60 feet enough length? Would 3/4 line splitting off into two 1/2 copper coils, each 60 ft long, then returning to 3/4 size be better than 60' of 3/4 copper? 60 ft of 3/4 is cheaper than 2 -1/2' rolls. Assume 1/2 inch would do better with heat transfer? With expense of copper, hoping to keep price reasonable .
My 450 gallon tank in winter runs 150 to 180 degrees and in summer with solar draindown system may only be 130 or so at times.
I will be using a tempering valve. A local heating guy around here says with our water they are constantly malfunctioning and said don't even use one. How much trouble are they to keep working?
Thanks for the advice.
Is 60 feet enough length? Would 3/4 line splitting off into two 1/2 copper coils, each 60 ft long, then returning to 3/4 size be better than 60' of 3/4 copper? 60 ft of 3/4 is cheaper than 2 -1/2' rolls. Assume 1/2 inch would do better with heat transfer? With expense of copper, hoping to keep price reasonable .
My 450 gallon tank in winter runs 150 to 180 degrees and in summer with solar draindown system may only be 130 or so at times.
I will be using a tempering valve. A local heating guy around here says with our water they are constantly malfunctioning and said don't even use one. How much trouble are they to keep working?
Thanks for the advice.