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[Uponthehill]

I've read aLOT of posts on this subject and this may be boring or redundant to some, but I would like a veterans opinion. By recommendation, I'm going to make a primary loop to a house plate exchanger and a secondary loop inside the house out of the exchanger. I've got my 1/2 pex, UltraFin, #60 expansion tank, & Taco 4900 air separator.  I'm going to order the Taco bumble bee for the Delta T feature inside the house.  I did not see a BTU rating on the plate exchangers linked below. They do however comment on the number of plates and the corresponding uses. Should I be concerned with no BTU rating?  I'm looking at 2 - 50 plate exchangers below. I'm going to call tomorrow to ask more technical questions ( GPM. pressure drop, etc.). I would also like to know if anyone has head multipliers for 1" Logstor, 1" copper, 1/2" pex and corresponding 90's. My Logstor is 150' from OWB. I was given a 35 GPM / 42' head Armstrong bronze pump that I would consider using for the primary loop. Any comments much appreciated. Stay warm....

http://www.amazon.com/50-Plate-Water-Heat-Exchanger/dp/B00LXCP6PS/ref=sr_1_10?s=hi&ie=UTF8&qid=1418004362&sr=1-10&keywords=Plate+exchanger

http://www.ebay.com/itm/OUTDOOR-WOOD-FURNACE-BOILER-BRAZED-PLATE-HEAT-EXCHANGER-50-Plate-/151106636653?_trksid=p2054897.l4275

[mlappin]

From Taco, a complete guide to calculation head including fittings and valves, etc.


http://www.taco-hvac.com/uploads/FileLibrary/SelectingCirculators.pdf

[Uponthehill]

Great info. Thanks.

[EE Farm Boy]

I have 150' of run on mine and I use a taco 013 Stainless Steel model.  I also used a bell and gosett BP410-30MT 400k heat exchanger for my main house loop exchanger to go from open loop of the boiler to closed loop for the house.  I then use a taco 010 cast iron on the closed loop side with 4 taco zone values and a taco zone controller.  I want to be able to route the heat where it was needed based on thermostats. 

[Uponthehill]

Thanks EE. I'll look the curves up on the 013. Did you figure head pressure prior to purchasing the 013?
Stay warm....