If we make Z axis vertical in global co-ordinate system.

When we want to analyse nozzle loads as per API 610, it asks the direction cosines for pump centreline and also has an option to indicate whether z axis is vertical or not.

Whats is the correct way to put direction cosines and other information in the input form, if my pump centre line is in x direction and the discharge nozzle is dx= 300 mm , dy = 0 and dz = 500 mm as per global coordinate system of piping input drawing.

I am asking this as the global forces when seen in equipment report, the directions of nozzle locations, forces and moments are changed with respect to global directions.