[dai]

Has anyone ever had permanent  frost damage  to a DI vessel?

[Llaaww]

I want to know the same, also any worries with pump damage from freezing...... ?

[deeege]

I did last January. Di vessel cracked and water was seeping out the crack due to pressure, needed replacing.

Mind you the temp dropped to -18 the night it cracked. Was my own fault for not insulating the van enough.

I only think it would be a problem at those extreme temperatures, not the -4 we are expecting this weekend. (IMO of course)

[Jeff Brimble]

Put an oil filled thermostatic rad next to it and cover it or box it, set it on frost and forget it. However with minus temps for day at a time watch the waste and supply  pipe dont freeze back into the unit- disconnnect the waste if unsure. Or let the waste run into a large container inside the shed and empty it periodically, in extreme circumstances.

[clearlyclean]

wrap an old sleeping bag or fibreglass insulation around it as well

[♠Winp®oClean♠]

Has anyone ever had permanent  frost damage  to a DI vessel?

Not to DI's, once had a bit of pump damage but it was repairable.

I bring my DI's & pump box indoors over night when the weather is extreme.