Cant adjust Danfoss pressure am I using correct ports?

[JC22024]

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.

 

[ShaunCorbs]

Go in the p port

 

[JC22024]

Go in the p port

Thanks yes I'll try that tomorrow I discovered after I posted that my pressure gauge was also bad. I have another one so will use it tomorrow. Spec calls for 12 bar pump pressure so I'll aim for that.