These are the instructions for Grand Cru kits so just try and follow them. I think they have changed these not too long ago as like I posted above I had been corrected on that before as I found that hard to believe but thats what it says! I will say that I always keep my wine at warmer temps with the fining agent that RJS uses and it always works fast and great but I have never done it that cold and making it even colder I can not tell you how it will work out!
I was just looking at a copy of the Grand Cru instructions copyright 2004. There is no mention of storing the kit at a low temperature after adding the clearing. In fact it says "Let wine stand in an elevated place (table or counter top)."