[Greenbuilding] [BULK] Re: Radiant heat boiler--heat exchanger for tiny buildings/families?

[Lawrence Lile]

Can you give me model numbers on that stuff? Sources of supply?  I need
to install one system or the other in one location.  

The Chillipepper system uses a manual pump initiation switch.  Why don't
they use a flow switch to make it automatic?  (Probably someone else has
the patent on that.)    It sounds like your system could be made to be
automatic fairly easily.  


 
Lawrence Lile, P.E., LEED AP

-----Original Message-----
From: greenbuilding-bounces at listserv.repp.org
[mailto:greenbuilding-bounces at listserv.repp.org] On Behalf Of Keith
Winston
Sent: Monday, February 12, 2007 4:09 PM
To: Greenbuilder list
Subject: [BULK] Re: [Greenbuilding] Radiant heat boiler--heat exchanger
for tiny buildings/families?
Importance: Low

I am installing a Grundfos that works very similarly, though with a 
clever twist. The pump sits in the utility room. There is a thermostatic

"comfort valve" under the sink that works like the Chilipepper, spilling

hot water back into the cold line. When hot water arrives, the valve 
closes, the pump sense the back pressure, and turns off. The clever 
thing is, you can install as many comfort valves as you want.

The only thing is, the Grundfos has an integral timer, and I think the 
Chilipepper uses a pushbutton actuator (I installed one years ago). I 
lean towards a button, but all my clients thus far have leaned towards a

timer. A button saves energy and increases comfort, I'm less confident 
that a timer saves energy.

Keith


Lawrence Lile wrote:
>  
>
> I've been looking into these pumps
>
>  
>
> http://www.chilipepperapp.com/Default.htm
>
>  
>
> instead of hot watrer recirc pumps.  Then there is demand in the hot
> water line, but there is no heat yet, they pump that cold water back
> into the cold water line, getting the hot water out to the fixture
> faster, without wasting the water.  Any experiences?
>
>  
>
>  
>
>  
>
> Lawrence Lile, P.E., LEED AP
>
>  
>
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-- 
Keith Winston
Earth Sun Energy Systems
Hyattsville, MD 20781
301-980-6325
send me mail at 
keith at the company below
www.EarthSunEnergy.com


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