I started recommending people use the new ECM drive circ pumps. They use
half the power and are a direct replacement. Have your plumber check
out the Taco e series, or the Grundfos Alpha series of circ pumps.
Ray Walters
Remote Solar
303 505-8760
On 9/7/18 8:45 PM, David Palumbo wrote:
El Sid 10W DC pumps are great but in my experience they did not have
the flow and head “oomph” for long runs for the zones on our second
and third floors with our hydronic heating system (wood boiler). In
our off grid house we installed El Sid’s on all 4 zones in the late
1980’s. We had recurring problems with the 2^nd and 3^rd floor zones
(long runs) becoming air bound repeatedly after a couple of months of
heavy use in the winter. Basement and 1^st floor zones did not have
this problem. I consulted with some plumbing and heating folks and
ended up replacing the 2^nd and 3^rd floor zone El Sid’s with 115VAC
Grundfos circ pumps. Problem solved, no more air lock problems. I had
a hard time understanding that while the El Sid’s worked OK on the
longer, higher head zones but did not have the power to avoid the air
lock situation in our heating system. One of the plumbers explained it
to me twenty something years ago BUT I don’t recall his explanation
now. Maybe some wrench with more hydronic chops than I can explain it.
Dave Palumbo
Independent Power
Hyde Park, VT
Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for
Windows 10
*From: *Bradley Bassett <mailto:bbasse...@gmail.com>
*Sent: *Friday, September 7, 2018 10:09 PM
*To: *RE-wrenches <mailto:re-wrenches@lists.re-wrenches.org>
*Subject: *Re: [RE-wrenches] Forced air Furnace
I have multiple ElSid pumps in my heating system which have been
running for just about 15 years without the slightest hitch. At 10W
each they are hard to beat, but they do need DC so a power supply is
needed. I ran them off 24VDC direct from the battery for the first 10
years and from a small MeanWell power supply for the last 5 years. My
only complaint is that when there are 4 of them running it sounds like
a miniature WWII bomber. No loud enough to hear outside of the utility
room but something to keep in mind.
Brad Bassett
AEE Solar
Brad
On Fri, Sep 7, 2018 at 7:33 AM Drake
<drake.chamber...@redwoodalliance.org
<mailto:drake.chamber...@redwoodalliance.org>> wrote:
Dana,
Your comments, and other comments on this list have made me see
the light. We are going to go with a boiler.
What is the best source of equipment for this application these days?
Many years ago, I helped install a system in Colorado using El Sid
pumps, with guidance from you, if you recall this ancient history.
Cheers,
Drake
Drake Chamberlin
/Athens Electric LLC
OH License 44810
CO License 3773
NABCEP Certified Solar PV
740-448-7328
/http://athens-electric.com/
At 07:43 PM 8/23/2018, you wrote:
Content-Type: multipart/alternative;
boundary="----=_NextPart_000_0068_01D43B08.DFB2A130"
Content-Language: en-us
Drake,
All the conventional units I have amp clamped over the years
are pushing 900-900+ watts per hour. I do not recommend them
ever & to date I have never found a lower wattage blower. I
would assume that a permanent magnet motor would fit this
suggestion, but I have not found one.
For off grid I recommend: Radiant floor heat first and hot
water base board second long before hot air. Air is a better
insulator than a heat transfer agent.
The new ECM (electronically commutated motors) pump motors are
basically at DC permanent magnet motor power draws [Taco &
Grundfoss] these days.
Best of luck with this one.
----------------------------------------------------------------------------
Dana Orzel Great Solar Works, Inc.
*C - 208.721.7003 d...@solarwork.com <mailto:d...@solarwork.com>
*Idaho Contractor - # 028765 Idaho PV # 028374
NABCEP # 051112-136 www.solarwork.biz <http://www.solarwork.biz>
_"Responsible Technologies for Responsible People since 1988"
_*P* Please consider the environment before printing this email.
*From:* RE-wrenches <re-wrenches-boun...@lists.re-wrenches.org
<mailto:re-wrenches-boun...@lists.re-wrenches.org>> *On Behalf
Of *Drake
*Sent:* Thursday, August 23, 2018 2:37 PM
*To:* RE-wrenches <re-wrenches@lists.re-wrenches.org
<mailto:re-wrenches@lists.re-wrenches.org>>
*Subject:* [RE-wrenches] Forced air Furnace
Hello Wrenches,
What is the best choice for a propane, forced air furnace for
an off grid house? We would prefer one that doesn't have a
phantom load, although the transformer for the thermostat may
not be avoidable. Low blower current would be preferable. The
furnace AC will be powered by a Magnum 4448 PAE.
Thank you,
Drake
Drake Chamberlin
Athens Electric LLC
OH License 44810
CO License 3773
NABCEP Certified Solar PV
740-448-7328
http://athens-electric.com/
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