Whats that noise?
http://www.youtube.com/watch?v=pmGv1d6_ijc
It is fitted as part of a system with a megaflow and 2 honeywell zone valves controlling the CH and Megaflow on the same circuit if that makes sense?
It doens,t appear to be the pump having checked while running with a steth.
It only happens when CH is running . TRVs in whole house apart from towel rads.
Any ideas?
http://www.youtube.com/watch?v=pmGv1d6_ijc
It is fitted as part of a system with a megaflow and 2 honeywell zone valves controlling the CH and Megaflow on the same circuit if that makes sense?
It doens,t appear to be the pump having checked while running with a steth.
It only happens when CH is running . TRVs in whole house apart from towel rads.
Any ideas?
