That is not the how defrost works. You have to the defrost timer or board will shift the rev. valve, turn off the condenser fan, and turn on the heat strips in the Air Handler to compensate for the cold air blowing inside. Just shuting down the unit down would not work. If the temp. is below...
All you need is 15% silver soldier. You will have to use a torch set with a brazing tip or a turbo tip on a plumbing rig. This is a harder soldier and higher melting temp(2500 degree), were soft soldier for plumbing melts around 400 degree, and cracks under vibration. This is alot easier to...
Hello
Yes there are universal defrost boards you can buy. Get you one and a defrost sensor. It will have a diagram with it so you should be able to wire it in with little problem. Should be able to get on at any decent HVAC Wholesale house. Hope this is helpful
Mechtech1
The average is 400 sq. ft per ton which would put you at a 5 ton unit. Plus with you having multi-levels you would have been better off with two units too have better control over you temps. With one unit you will have a temp. difference (warmer up and cooler down) you can help correct this...
that is used to preheat domestic water or makeup water. It will not do anything for 160-180 degree hot water coils in a closed loop because you don't use much make up water. If you you use alot of domestic hot water you may want to think about that.
