How to check a 2 port zone (Honeywell type) valve is working
This video shows How to check a 2 port zone valve is working using the lever to feel the whether it is manually open by feeling the tension of the spring.
Видео How to check a 2 port zone (Honeywell type) valve is working канала MyBoiler
Видео How to check a 2 port zone (Honeywell type) valve is working канала MyBoiler
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