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
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
I went a more expensive route but never regretted it as I want a stable
power supply for my SunFrost and 12V DC Pumps. I have an Iota AC to 12v DC
charger/power supply which works with or without batteries. I have kept a
12V battery attached as it gives me 2nd level redundancy when my main bank
There are certainly many options I didn't know
about. You guys are an incredible resource!
On the LED drivers, do you bypass the transformer
and rectifier and wire in directly to the DC leads inside the box?
Thanks,.
Drake
At 11:31 AM 9/15/2018, you wrote:
I have had great luck using
SCI was that Canadian company. Samlex does make a 48 v to 24 v
converter modelIDC-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
While not as inexpensive as David's solution, I have used Mean Well
converters with success. This manufacturer supplied the DC-DC step-down
converters used by Wattsun for their tracker drives, so there's a pretty
long history with them. Check out
I have had great luck using cheap LED drivers. They say 110-240 vac input
but they rectify the input to DC. I have used them to run 12 and 24 volt
stuff off of 48 vdc and even 400 vdc. They operate down to about 35 volts
dc. They are available in a variety of output voltage and current. And they
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
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