replace manifold flow meter underfloor heating

[john cushnie]

I got charged a small fortune to get this done last year, and I now have another one leaking and thought I would do it myself. He was only in the house 15 minutes so can't be a big job.
Is it a case of isolating the valves, releasing the pressure into a bucket, changing the flowmeter, then topping the system?
I am competent in domestic plumbing but I never touch heating.
Any help would be appreciated, thanks

 

[Madrab]

Yup, just make sure all the actuators are off to minimise water loss.