Parts Ordered!

I put in the order today for the components of my solar system with
Solartrope of Orange County, CA. At this point I'm not sure that
this system requires an expansion tank like I have on the schematic.
I have asked SunEarth in an email whether or not it is and hope to
hear back soon. Ideally the air headspace in the drainback tank
is all the expansion space I'll need. This would be better because
I wouldn't have to buy yet another component, a large one at that,
and the rubber diaphragms in expansion tanks eventually wear out.
One less thing to go wrong is certainly a good thing.

The quotes I got from both Solartrope and another company both
specified a painted SunEarth collector (Mdl. EP-32). For ~$100 per
collector I opted for the black chromed ones. They're a bit more
efficient. Also, when the pump on the system turns off because the
solar storage tank is up to temperature, then the collectors should
drain, leaving that paint cooking at 300+ F (150+ C) in full sunlight.
Double, double toil and trouble, sunlight burn and black paint
bubble!

Parts List:

SunEarth 80 HE-1 80 Gallon Tank with Internal Heat Exchanger.
SunEarth EC-32 Collector, Black Chromed, 4x8, 1" Header.
STECA 0301U Steca Controller with display, freeze protection and 2 sensors.
Mixing Valve (075NL-S) 3/4" Mixing Valve, Sweat Connections
Grundfos UP15-100F
Grundfos CF075 Flange, cast iron 3/4"
Winters Hot Water Thermometer
3/4" Brass Swing Check Valve
Pressure relief valve (150 PSI) 3/4"
Blue White 0-10 GPM Flow Meter
3/4" Ball Valve - Full Port 2
3/4" Male, Threaded Drain Valve
SunEarth 5 Gallon Drainback Tank
SunEarth RexRack 2... 3 RexRack Front Feet
SunEarth RexRack Rear Telescoping Legs (58-97")
27 #12 3/4" Self-Drill SS Steel Screws
8 3/8" SS Strut Nut Assembly w/Clips
5/8" BA SolarStrut

My good friend Dominic is allowing all this gear to be sent to his
place of business nearby here in the city so that I can avoid
expensive crating charges. If you have access to a proper
shipping/receiving area that can accomodate large trucks and has a
forklift, you can save a couple hundred dollars!

Parts should be here within two weeks. woO!

Next, I'll submit a bunch of docs (schematic, rack specs, and
SketchUp 2D view of panel location) to the SF Bldg. Dept. May all
that go smoothly...