According to my 72 owners manual, that was exactly the case...The warm air from
the furnace was piped to the water tank areas to help prevent freezing.
Judy
72 27 International Ambassador
Philip Piper wrote:
> Hi all, I am in the process of re-installing the gray water tank with a new
> support pan. The old pan has an oblong hole in the front where the heat duct
> protruded through. Does anyone know why the duck went into the pan, it looks
> as though the air flowed around the tank and out around the dump valve cut
> out. Could this have been an attempt to avoid freezing?
>
> Phil Piper
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