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Plumbing / heat loss with staple up radiant system

« on: December 07, 2013, 05:54:09 AM »

Im not really sure of what to do, so I'm asking for help. Hopefully somebody will know something about this or have experience with it.  This is what I have going on I have a CB6048 with 65' of thermo pex going to the house with one main loop for the supply and one loop for the return water. Off of them 1'' loops I have one zone for my upstairs which is 2  1/2'' 250' loop on one manifold. Another zone for my 1st floor which is 10 1/2'' loops on a manifold. Also one more zone with no manifold becauce its one loop for 8' of base board heat in my entrance. Last I have a cooper sleeve not sure what its called connected to my hot water heater to heat the domestic water for the house, that water circulation is pumped from the pump outside on the furnance.
The 3 pumps for the zones in the house are all Taco 007 zoning pumps and the one on the furnace outside is a taco 007 priority pump.  Okay with that said on days the temp drops below 10 degrees the zoning pumps run nonstop and the temp in the house  drops  8-9 degrees and cant keep the house at 72.  So I don't no if the pumps are big enough or what I should try?  I remodeled and there is new insulation in walls and all new windows. there is very little heat loss. it is  2700sq ft house.  So any help on this would be very appricated. Thank you.