NebraskaSHO
Harumph!
Looks like it'll be cold tonight with no central heat.
Shit.
Shit.
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with the windchill last year it dropped to -27 once. that was a crappy day to have to leave the house at 5:30AM...I checked the coolant a couple days ago on the SHO and I'm good to -20F. I wasn't sure what my mixture was, but I feel better now.
Clay, do you know how to properly drain system?
I used to intall them.

Use when manual valves are located at the end and low points of the irrigation piping. To drain these systems, simply shut off the irrigation water supply (shut off will be located in the basement and will be either a gate/globe valve, ball valve or stop and waste valve - see drawings below) and open all the manual drain valves. Once the water has drained out of the mainline, open the boiler drain valve or the drain cap on the stop and waste valve (whichever is used in your area) and drain all the remaining water that is between the irrigation water shut off valve and the backflow device. Open the test ***** on the backflow device. If your sprinklers have check valves you’ll need to pull up on the sprinklers to allow the water to drain out the bottom of the sprinkler body. Depending on the location of the drain valves, there could be some water left in the backflow, the piping and the sprinklers. When all the water has drained out, close all the manual drain valves.