Revit MEP

[irfankhan888969]

I am  trying to add the  boiler to a hydronic piping system A warning appears and the boiler cannot be added to the system. Why is this happening?

[RobDraw]

How are you trying to add it to the system?

Do the connector properties in the boiler correspond with the system?

[irfankhan888969]

Both properties are different , 

When I draw the pipe , in properties panel system classification is grayed out 

[RobDraw]

Share a portion of the model that exhibits the issue.

[irfankhan888969]

[irfankhan888969]

 See system Classification 

[irfankhan888969]

Boiler connector properties is Hydronic supply and when i draw pipes in plan it turned into grayed hydronic Return ??

[iainsavage]

The message in part 5 is nothing to do with the boiler - it is telling you that your pipe routing options don’t have a suitable fitting in order to join the pipes and it appears from your screenshot that there is no elbow/bend fitting in the routing options.

The other problem seems to be that you are trying to connect a supply pipe to a return connector?