8 Tips on How to Correctly Apply Boiler Antifreeze
Various methods exist to correctly apply boiler anti-freeze. Before you begin this process, be sure it is absolutely necessary to apply the anti-freeze and that no alternate methods will work better to accomplish your objective of protecting the system from freezing.
Removing Existing Water from the System
Before adding the anti-freeze, prepare your system by removing all water from the boiler and lines.
- Drain the boiler using the drain valve located near the bottom of the boiler
- Open all bleeders on heating lines and continue to drain at the boiler
- If some of your heating lines are located below the boiler, you may have to force out some water with air pressure
Once the lines and boiler are drained, add only mobile home anti-freeze to the system.
- Close the water valve near the boiler that feeds house water into your boiler system
- Find a location for the anti-freeze to be forced into system, possibly the boiler drain valve
- Begin to pump anti-freeze into the boiler. It will take approximately 10 gallons for a 2800 square foot home depending on heating system configuration
- Add enough anti-freeze to pressurize the system to 12-15 psi
- Bleed the system until anti-freeze squirts out from each bleeder location
Your system is now protected from freezing down to the freezing point temperature of the anti-freeze mixture you used.