Finishing The Job - Friedrich M18YJ Installation Manual

Finishing the Job

- With a service valve wrench, turn the valve of
liquid side counter-clockwise to fully open the
valve
- Turn the valve of gas side counter clockwise to
fully open the valve
- Loosen the charge hose connected to the gas
side service port slightly to release the pressure,
then remove the hose.
- Replace the flare nut and its bonnet on the gas
side service port and fasten the flare nut secure-
ly with an adjustable wrench. This process is
very important to prevent leakage from the sys-
tem.
Outdoor unit
Manifold valve
Pressure
Lo Hi
gauge
Open
Vacuum pump
Indoor unit
Close
- Replace the valve caps at both gas and liquid
side service valves and fasten them tight.
This completes air purging with a vacuum pump.
- Replace the pipe cover to the outdoor unit by
one screw
Now the air conditioner is ready for test run.
Anchoring of outdoor unit
- Fix the outdoor unit with a bolt and
nut(ø10mm).
- When installing on the wall, roof or rooftop,
anchor the mounting base securely with a
nail or wire assuming the influence of wind
and earthquake.
- If the vibration of the unit is transmitted to the
pipe, secure the unit with an anti-vibration
rubber.
Bolt
23
Tubing connection