Pic request and answer for a water pipe

[Gandi699]

on the thermostat housing there is a water feed that points towards the ground. Where does this pipe run to? Does it come from/go to the heater matrix outlet?
Pics here is of me pointing at it

http://farm7.static.flickr.com/6194/6108737489_6d9421c256_z.jpg

[Deano_Blad]

if its the one i think, it runs to the heater matrix, and a pipe comes from heater matrix to a t-piece on the back of the engine block where the coolant from the heater matrix and the block can return to the radiator.

[Gandi699]

Yeah the pipe which the little plastic piece with screw cap on do you mean? Ive currently got the pipe in the picture linked to the matrix by a hose if this is right? Then the other pipe coming off the matrix runs to the little plastic/bleed screw jobby

[Deano_Blad]

yup you got it

[Gandi699]

Anyone else know?