Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Winterizing Boiler /System

Charlie_7
Charlie_7 Member Posts: 2
in THE MAIN WALL
Would like some advise on winterizing boiler and system in our summer cottage. I have a three zone FHW system (zone valves) including an indirect. In the past, I have bought and circulated anti-freeze through the system and then drained so nothing was in pipes. Waste of antifreeze I know, but safer. This year I bought a compressor for other work and was told I could use the compressor to blow-out the system and not have to purchase 6 gals. of anti-freeze anymore. Was wondering if anybody uses this method, what pressure do you blow out at?, basically how you do it, and any advice on making this a success (i.e., that is- no splits in Spring).
Thanks,

Charlie "O"

Comments

  • Brad White_9
    Brad White_9 Member Posts: 2,440
    Compressed air

    will remove all of the water from the system EXCEPT the low point you cannot get to which will freeze and split...

    Use the glycol and recover it in a drum, same drums it came in. Why dump it? Check for pH and freeze point, add new if you have to and be done. You may consider leaving glycol in it for all time assuming the system is tight. Residual glycol can be worse than none at all; it becomes corrosive and occassionally bacteria food. Aneaerobic bacteria that has that "who? me?" smell to it.

    My $0.02

    Brad
This discussion has been closed.

Categories