System drained down

My daughter has recently purchased a flat with a Pulsacoil 2000 heater. The water system has been drained down.

Are there any special precautions to take to refill. Is it easiest to refill via the header tank.

Many thanks

Have you the book?
If not go to Gledhill site and down load one.
I would say it is easy.
BUT you need to check for what some one might or may have done.
Check drain offs are off ( 2 )
And then fill slow checking all the time.

Hi Mike,

Many thanks for info. Fortunately all sorted now, & yes she does have a book.

Terry.