darnok Posted October 13, 2012 Share Posted October 13, 2012 i have to change a honeywelll automatic valve on my central heating the only thing i dont know is when draining down and refilling the system does the automatic valve switch need to be on automatic or mnual/open amny thanks for any advice given Link to comment Share on other sites More sharing options...
gnvqsos Posted October 13, 2012 Share Posted October 13, 2012 i have to change a honeywelll automatic valve on my central heating the only thing i dont know is when draining down and refilling the system does the automatic valve switch need to be on automatic or mnual/open amny thanks for any advice given If set to manual you can adjust,whereas if it malfunctions then the automatic will not respond as you intend.Honeywell have excellent Manuels for help,and have a comprehensive website. Link to comment Share on other sites More sharing options...
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