Alternating Relay Circuit
I have 4 condensing units serving a chiller circuit. I want to alternate the lead / lag C.U. operation via the four stage temperature controller. I can find 2 switch and 3 switch alternating relays ( ref. http://www.macromatic.com/products/custom.html ), however is anyone aware of a 4 switch alternating relay?
Any ideas?
:confused:
the chiller manufacturer will do it, but the price ain't too good.
I know I can do it, but looking for the one-component answer. searching the web, I found a three switch alternating relay. I don't mind using it, leaving one C.U. as the perpetual "lead".
Do you think that is the best answer?
Later,
:)