Think i may have an airlock in my central heating system and need to vent the pump. I know i have to turn the large central screw but ....couple of questions
Does the pump need to be on ?
Does the central heating need to be on ?
What happens when i do it ?
It's a Grundfos UPS 15-50x 18 pump and i can't find out anything about it
Any help or ideas would be great :)
Thanks
Last edited by snowbam on Fri Aug 22, 2008 8:52 am, edited 1 time in total.
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