Nibe AG-AA10 Series, Installer Manual

Page: 12 / 24

11. Remove the valve caps from both valves. Now start
the vacuum pump. If damp air has entered the
cooling pipes, flush through with dry nitrogen.
Low pressure
High pressure
12. With the vacuum pump in operation, close the tap
on the manometer unit when you have reached a
vacuum less than 2 mbar (absolute pressure,
standing vacuum min. 30 minutes). Stop the vacu-
um pump.
13. Open the service valves fully (anti-clockwise direc-
tion). Disconnect the vacuum pump. Reinstall the
caps on the valves, tighten to a torque of 20 Nm.
Leak trace caps and connections using a sniffer or
leak spray. See page 12 for the valves' main func-
tions.
14. Complete insulation, protect against mechanical
impacts, secure and hang up. If necessary, seal the
valve opening in the wall.
AG-AA10 Chapter 5 | Installation 10