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1

Plumbing / Re: Zone pumps passing water ?

« on: February 28, 2012, 09:34:47 AM »

Gotchya. I did think about reversing the pumps to draw water through the system in the opposite direction. It seems like the force would be a lot less on the pump since where it tees off it is 3/4 from 1 inch on the return but at the supply its still at 1 inch. and there would be the most pressure from the pump at the t where i supplied the zone pumps since its the first thing cut into the supply line.
would it be better to have a single 1inch swing valve after the pumps if i reversed the system?

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2

Plumbing / Re: Zone pumps passing water ?

« on: February 28, 2012, 09:19:40 AM »

The reason the lines are setup like that is because The baseboards are in a garage that has been turned into a living space and the floor is concrete. Theres no way to bring the return lines back to where the supply line is. Why would it matter how close the fittings are? If using zone pumps shouldnt it not allow water to pass by when not in use? And having a flow check valve shouldnt allow it to travel backwards through the system? some suggestions that i have gotten is that the swing valve has to be horizontal, the circulation pump should be after the zone pumps. I've heard many different theorys but i want to know for sure which one is correct before i tear apart my whole system. Thanks for the response rsi maybe you have reasoning for the fittings to be closer together.

3

Plumbing / Re: water directon

« on: February 28, 2012, 09:12:31 AM »

On my Thermopex from CB, both lines are red but one has a black stripe.  I would think there would be some type of marking to let you know.

I agree if you used thermopex they both look like the same pipe. But on one side of one of the pipes one has a double black stripe and the other one is just plain red. Distinguish which pipe is your return on your boiler and go inside your home and check your return line to see if its the pipe you want it to be.

4

Plumbing / Zone pumps passing water ?

« on: February 28, 2012, 08:58:44 AM »

I recently put in a system that has a taco 009 circulation pump that circulates water to the sidearm exchanger for our hot water then travels to a heat exchanger in our forced air furnace then travels back to the stove. We teed off of the supply line between the 009 circulation pump and the sidearm heat exchange to feed to zones of baseboards. I put 2 taco 007 priority zone pumps to supply 2 different zones of water baseboard heat that then dumps into the cold return line when the zone calls for heat. We have swing valves directly after the zone pump mounted vertically. Somehow water is passing through our baseboard zones even with the pump off and we cant figure out why. If anyone has some suggestions to what the problem could be I would appreciate it.