How to install wall thimble?

I have a Bosh tankless hot water heater. I am rouging in my vent pipe during my insulation process. How do I install the wall thimble? The vent pipe instructions aren't very helpful. Do I install the exterior side over the plywood then run my siding over the flashing or do I install the entire flashing over the siding (I will have lap siding)? On the interior do I install the flashing over the drywall or behind the drywall?

Thanks

take it back

bosch is the worst one you can get....

take it back if you still can

Now stay tuned for Laddy Boy and his annoying buddy Greg...
They will present you with the Grand Illusion...

I dont think they will

Redwood said:

Now stay tuned for Laddy Boy and his annoying buddy Greg...
They will present you with the Grand Illusion...

Click to expand...

I dont think that they have deluded themselves into touting the Bosch tankless water heater....

I dont think that they are that far gone yet.


wait and see...

No, I think one of them is a Bosch owner...