Hi all,
changed a system boiler today. No changes to the configuration of the pipes has been made. Changed the 3 port valve but A & B going in same direction of old 3 port valve. New flow is to old flow and new return is to old return. Pump speed the same. Water is now being pushed up the vent into the F&E tank. Reduced pump speed but stays the same. Any ideas what could be causing this please?
Mark
changed a system boiler today. No changes to the configuration of the pipes has been made. Changed the 3 port valve but A & B going in same direction of old 3 port valve. New flow is to old flow and new return is to old return. Pump speed the same. Water is now being pushed up the vent into the F&E tank. Reduced pump speed but stays the same. Any ideas what could be causing this please?
Mark