![Quote](images/misc/quote_icon.png)
Originally Posted by
LATS60
With respect. The pipes are outside cold water pipes, they are always thermal lagged, despite the air temperature reaching sub zero the water in the pipes will not freeze because the residual heat even from cold water is above freezing, then the pipes will retain enough of the heat so as not to freeze, this is taking into account thermal lag.
As i'm sure you are aware, a look at thermal dynamics will explain this principal, being an engineer yourself you will be able to understand the science behind it.