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    No DHW demand signal

    Hello and thanks for any help. I have a Navien system boiler configured as S Plan. Everything has been working fine for 2 years until the other day when the boiler no longer fires for DHW only. CH works fine and the valve on the DHW circuit also operates correctly. I am still able to get...
  2. O

    Shower arm pointing up!

    Hello, First time poster, many time reader. I'm installing a new shower, concealed thermostatic variety. I have a brass wall mounted elbow with a female 1/2 inch thread into which the shower arm screws. Looks like one of these...
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