14.3. Remarks at replacement of elements of central air of air
Never open a contour and do not separate elements of central air of air before a system discharge.
After separation of components of central air of air immediately close connections by the corresponding covers for an exception of hit of moisture of air in system.
At installation of new components of central air of air take them from packing directly ahead of installation.
At connection of open unions always use new sealing rings.