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Replacing Navien Three way valve

Big Ed_4
Member Posts: 3,126
I have two to replace , Came across two within the same day , for the first time . Hot water no heat . I could not purge water though supply . Black and Red have voltage , black and the other color does not ...
I have the valves , extra gaskets for behind the circulator and plenty of seals for connections , with plumbers grease .
Any tips or tools needed to replace would be appreciated
I have the valves , extra gaskets for behind the circulator and plenty of seals for connections , with plumbers grease .
Any tips or tools needed to replace would be appreciated
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Look Like I will find out...
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board has to come out. circulator has to come out. then you can remove 3way. need about 6 o rings. as well as plumbers grease. don't rip the o rings. im probably doing one of these this week. pro tip. buy magnetic screw drivers.
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I installed my first today , I know now if there is no union between the 3 way and supply pipe cut it out and you will need to install one . The 4 small screws under the cabinet holding the valve , need a straight alignment to remove . To make a short story long it sucked . Give me Bosch
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ya im kinda hoping i can undo the screws. and spin it out inside cabinet.Big Ed_4 said:I installed my first today , I know now if there is no union between the 3 way and supply pipe cut it out and you will need to install one . The 4 small screws under the cabinet holding the valve , need a straight alignment to remove . To make a short story long it sucked . Give me Bosch
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