SID circulators [RE-wrenches]

[Jeff Wongstrom]

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Kurt, Alan, etc.

Thanks for the responses concerning SID pumps.

If the pumps do normally make some noise, having the pumps plumbed in copper
and rigidly attached with uni-strut to hollow framing may be the biggest
issue although there is rubber isolation tape around the pipe under the
uni-strut clamps.

The water used in the systems and for static head testing(pump with pex
tubing) was softened but still contains some iron and salt.  Perhaps these
particles are contributing to the noise.

I will try further isolation/insulation measures and running a
glycol/distilled water fluid and of course air elimination.

Gator Tom,

Ps=28psi, Pt=18psi, deltaT=10f, collector area= 32sq.ft, 3/4 copper,
collector 25' above tank. Currently the sdhw has straight water but will be
replaced with a glycol solution for Montana winter.   System voltage varies
as the power system battery bank but pump testing was done with voltage
around 25 volts.  Current with solar charging measured .37a @27.2v gives
10w.  

Thanks

Oscar
Thirsty Lake Solar 

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