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Cant adjust Danfoss pressure am I using correct ports?

Discuss Cant adjust Danfoss pressure am I using correct ports? in the Oil and Solid Fuel Forum area at Plumbers Forums

I have a SIP space heater and fitted a new matching spec oil nozzle as part of a service on it.

I wanted to check the pump pressure with the new nozzle and its difficult to be sure what port to connect to.

And that these pumps are definitely adjustable! I turned an Allen screw which is not tight so I presume it's the pressure adjuster and after 1 full turn the gauge stayed at 22psi. Spec says 28psi.

Do I keep adjusting or what do you guys think?

Above top screw is the only one which appears adjustable.

Go in the p port

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