Question about Water Heaters
I have aGWH 425 HN Bosch Tankless Water Heater. This am I do not have any water on the hot side. It did get cold here last night in the teens but last week it was 5 or 7 degrees and no problems. What do I do, I am single so hopefully it will be simple.
I had them same problem with my AquaStar 125 back in 2005......it hasn't been that could around here since then until last night and it froze up again. The problem is the negative draft. This can be solved with the Power Vent Module and the AQ1 flapper....at least with the 125. It prevents the back drafts.
Posted on Jan 17, 2009
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Posted on Jan 02, 2017
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