Hi,
I am looking to drain down the house CH system. We have a Vaillant ecoTEC Plus 938 combi boiler. I would be grateful if anybody could tell me if it is sufficient to just turn off the boiler before draining the CH system.
Many thanks in advance.
Mark
I am looking to drain down the house CH system. We have a Vaillant ecoTEC Plus 938 combi boiler. I would be grateful if anybody could tell me if it is sufficient to just turn off the boiler before draining the CH system.
Many thanks in advance.
Mark