Hi
I stumped !!!!! ( or reached my level of understanding)
I have a Mk1 Airflow ( import) with a 711m 16 crossflow and I'm working though it.
Effectively the heater is on all the time and no heater valve is installed.
The attached picture should show what I have but clearly does not show what is missing@@@@
The return pipe from the heater deadheads into the inlet manifold ( for twin choke) but I'm lost as to how that circulates and where the line should go to
I can put an inline heater valve in the supply line but don't think that all that needs done