[RE-wrenches] flushing DHW collectors
Kirk Herander
kirk at vtsolar.com
Fri Apr 17 10:21:14 PDT 2015
Hello,
I have an older 10 collector system in which the glycol has stagnated due to
a defective collector sensor, apparently for some time. I was able to drain
the collectors, the cooked glycol is black with a good bit of sediment. I
tried to flush the system with water but my ½ hp utility pump could not pump
the water entirely through the collectors. Suction slowed down and stopped
after just a few gallons, as if the pump couldnt overcome the effective
head of the system. I had no problem using this pump to charge the loop when
it was commissioned. I suspect the collectors may be gummed up with cooked
glycol. I guess compressed air is next to try. Are there any safe chemicals
to use to purge / un-gum the collectors? Thanks.
Kirk Herander
VT Solar, LLC
Proven PV provider since 1991
www.vermontsolarnow.com
dba Vermont Solar Engineering
NABCEPTM Inaugural Certificant
VT RE Incentive Program Partner
802.863.1202
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20150417/6840665c/attachment-0001.html>
More information about the RE-wrenches
mailing list