Taco Variable speed Delta-T Pump

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  #1  
Old 09-05-11, 07:32 PM
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Taco Variable speed Delta-T Pump

What can you guys tell me about a 008 VS Delta-T pump?
I am planing on zoning my radiant floor with circ. pumps, three of them. One manifold for the garage, and two manifolds for house. My primary pump is a Taco 00 3 speed. And was going to use three more 00 3 speed pumps on the secondary loop. Do you think the VS Delta-T pumps would be better, then the 00 3speed ? The cost would be a lot more. But would it be worth it?




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Old 09-07-11, 05:56 PM
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I can tell you that I would strive to not use either the 00 3-speed or the 008 VSdT. Go with an ECM smart pump like Grundfos Alpha or Wilo ECO and use zone valves.

The 008, even in VS dT application, is a honking big pump, electricity-wise.

If you have actually designed the system for a constant dT at all loads, it might be a decent application, but that is rarely the case.
 
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Old 09-08-11, 07:03 PM
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The Bumble Bee should be out soon. They look to be pretty nice pumps, they have the ability to do more than the Grundfos Alpha.
 
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Old 09-08-11, 07:42 PM
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Who is making the Bumble Bee Pump ? And what is it?
 
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Old 09-08-11, 08:27 PM
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It is Taco's entry into the high-efficiency ECM pump market. I waited a long time, then got tired of waiting and went with Grundfos Alpha. Very happy with the Alphas. (Speaking here as a longtime Taco user and fan....)
 
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Old 09-09-11, 08:15 PM
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I plained on zoning w/pumps, so if I go with zone valves what brand or model should I use ? They will be 1" valves.
 
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Old 09-11-11, 05:17 PM
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These are good

Taco-Hvac: Zone Sentry® Zone Valve

also Belimo makes very nice ones, but can be hard to get in some places.
 
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