RedAl said:It's pumping down.
I've also go the book for the pump (a Grundfos UPS) it says that pumping downwards in a vertical pipe is acceptable but not recommended.
tryed that one chris
RedAl said:It's pumping down.
I've also go the book for the pump (a Grundfos UPS) it says that pumping downwards in a vertical pipe is acceptable but not recommended.
Are you sure?"Pump in the worse possible position sucking out from the least line of resistance, the top of the boiler, "
but it isn't, it's pumping towards the boiler.
croydoncorgi said:Are you sure?"Pump in the worse possible position sucking out from the least line of resistance, the top of the boiler, "
but it isn't, it's pumping towards the boiler.
If the pump head is in the 'usual' orientation as it comes from the factory, then it's pumping DOWNWARDS. Not possible to read the arrow on the body (not enough pixcels!) but the casting shape looks right for downwards.
curlydon said:curly never said jack sh*t, don't do heating, but as an observation, pump looks pretty new to me, are you sure someone just didn't put it in wrong way round
Quote:
"Pump in the worse possible position sucking out from the least line of resistance, the top of the boiler, "
but it isn't, it's pumping towards the boiler.
Chris's theory with the cold feed is also wrong, as a blocked or restricted cold feed would suck air not blow water.
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