Motorised Valve's for Combi Central Heating System


Postby sham » Thu Dec 10, 2009 10:48 pm

need answers to the following questions.
1) When replacing a two port unit does the whole central heating system need to be drained.
2) Any-way to isolate before removing
3) Any benefit of using scale inhibitor products when there is a magnaclean on the system
sham
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Postby rosebery » Thu Dec 10, 2009 11:44 pm

"1) When replacing a two port unit does the whole central heating system need to be drained."

No just below the level of the valve.


"2) Any-way to isolate before removing"

Drain below the level of the valve.


"3) Any benefit of using scale inhibitor products when there is a magnaclean on the system"

Different animals - do different jobs. So the answer is yes.

Cheers
rosebery
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