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Author Topic: adding second loop. Question?  (Read 1916 times)

Range91

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adding second loop. Question?
« on: November 30, 2016, 11:59:41 AM »
I have a 100' run of pex and about 65 ft of 1" copper with a grundfos 15-58. I am wanting to add a 2nd loop to feed my garage unit heater 50k btu and will have to add additional 150' of pex to make it work. My question is can I put in 2 t's and put in a normally open zone valve between the t's to  make this work or do I need to not put in a zone valve and just do another pump. Right now i can run my pump on low and does just fine keeping up with side arm and heat exchanger. Thanks in advance for any help
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slimjim

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Re: adding second loop. Question?
« Reply #1 on: November 30, 2016, 12:21:38 PM »
Stay away from zone valves, they are very restrictive, add a circ and keep your tees to less than 4 times the diameter of the piping and you will be happy!
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Wood boiler sales, service and installation for the Northeastern USA.

Range91

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Re: adding second loop. Question?
« Reply #2 on: January 07, 2017, 03:54:11 PM »
Should I push through my secondary loop or pull?  Also is there any problem to pulling my secondary loop off a vertical run. Appreciate any input once again thanks
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RSI

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Re: adding second loop. Question?
« Reply #3 on: January 07, 2017, 04:04:29 PM »
If it is an open system then it should be pushed. If pressurized then it doesn't matter.
You could use one of these if you wanted to have less connections http://www.webstonevalves.com/default.aspx?page=customer&file=customer/wecoin/customerpages/purgetee.htm
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