As many other folks have noted, the El Cid pumps are very low flow rate,
so it can be very hard to get air out of the system. These air pockets
can build up and keep the fluid from flowing at all in some loops. No
flow, no heat. Besides being half the power draw , the ECM pumps are
variable speed so their power draw can be reduced even further. At
initial start up they can be run at full power (roughly 40 watts) and
then once the air is purged from the system, they can be throttled back
to even lower power draw. I have not heard of either company doing
anything DC. I've found that when involving the other trades (plumbers,
house electricians, well service, etc) that the closer it is to being
how they normally do it, the better. Using these ECM drive pumps for
instance, is just a matter of specing the pump. It plumbs and wires in
just like a regular model.
Ray Walters
Remote Solar
303 505-8760
On 9/17/18 8:16 AM, Drake wrote:
Ray,
The pumps you recommend seem like very solid units. Have you had
problems with the El Sid pumps?
My concerns are that the TACO and Grundfos pumps I've found are over
80 W each, running on AC. If the El Sid are reliable, I'd prefer to
stay with the low power usage and DC. Do either of these companies
make any low wattage DC pumps?
Thanks,
Drake
At 02:53 PM 9/15/2018, you wrote:
Content-Type: multipart/alternative;
boundary="------------E0BC4714B0DAF20D8F5FC6FF"
Content-Language: en-US
SCI was that Canadian company. Samlex does make a 48 v to 24 v
converter model IDC-100C-24.
However, I would consider skipping the El cid pumps and going to the
new TACO or Grundfos ECM drive circulators.
Ray Walters
Remote Solar
303 505-8760
On 9/15/18 8:58 AM, Drake wrote:
Since Solar Converters seems to have evaporated, I'm not sure where
to look for a 48 to 24 V DC to DC converter. Samplex has 24 to 12.
It seems like someone mentioned a Canadian company that makes these.
I need to step down power from a 48 V battery bank to power El Sid
pumps for an offgrid hydronic heating system.
Thanks,
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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