How to release water from antifreeze steam generator in winter

Aqua-Hot - Frequently Asked Questions

Aqua-Hot recommends the antifreeze solution contain between 35% and 50% propylene glycol boiler antifreeze to water mixture. Too much antifreeze lowers the heat transfer capability, causes sticking check valves in the heating zone lines, and may coat the system's interior surfaces resulting in lower water and interior cabin temperature levels.

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