Washing machines and duvets - weight?

[HappyAsEyeAm]

I have a 2 year old Miele washing machine. I love it. Unfortunately, I don't know the model number to know what weight the drum will take, and I'm wondering whether I will be able to wash duvets in there, and if so, what size and what tog.

I am assuming I can wash a single duvet (13.5 tog) in there. What do you think?

But what about a king size duvet? We have an all seasons one, so a 9 tog and a 4.4 tog. So I could wash them separately. What do you think?

I would be proper sad if I ruined my wonderful Miele.

I don't have a Miele washing washing but if the quilts fits in, I'd just go for it.

The model number might be on the inside of the door or the inside of the little dirt trap door?

I would wash the single one in there if it fits in the drum comfortably (not tightly squashed in) but take the king size ones to a launderette.

I have just found out that it has a 7kg drum. Do you think I would be ok putting the king size duvets, separately, in there? I washed the single and it was fine.

Our 7kg struggles with a king size duvet, I think. Not sure about the double, but the singles are fine.