Nibe AG-AC10-42 Installer Manual page 13

8. Tighten the connections using a wrench and torque
wrench according to the tightening torque values
in the table.
Pipe diameter
6.35 mm (1/4")
9.52 mm (3/8")
12.7 mm (1/2")
9. Insulate the pipes thoroughly and keep the pipe
connections free for leak testing.
10. For vacuuming of the indoor unit and refrigerant
pipe, connect the vacuum pump to the outdoor unit
as illustrated.
NOTE
Remaining air or damp affects the heat
pump's function negatively and can damage
the product.
AG-AC10
Tightening torque
Approx. 15 – 20 Nm
Approx. 30 – 40 Nm
Approx. 50 – 55 Nm
INDOOR UNIT
Indoor unit
INDOOR UNIT
Indoor unit
11. Remove the valve caps from both valves. Start the
vacuum pump and allow it to run for the time given
in the table. If damp air has entered the cooling
pipes, flush through with dry nitrogen.
Low pressure
Capacity vacuum pump 100l/h
Pipe length ≤ 10 m
Pipe length ≥ 10 m
High pressure
10 min or more
15 min or more
Chapter 5 | Installation 13