Installation Manual

22
TESTING AND INSPECTION
Pipe Testing
VAC valve
Vacuum pump
Service port
Low pressure gauge
High pressure gauge
Gauge manifold kit
Pressure gauge (low-pressure)
Pressure gauge (hi-pressure)
Gauge manifold
Connection pipe
Cap
Cap
Service pipe
Cap
Hose with the valve pin
Hose
Vacuum pump
Hose
Switch (hi-pressure)
Switch (low-pressure)
Connection pipe (to indoor unit)
Liquid valve
Gas valve
Service port
Additional Charge
The outdoor unit contains enough refrigerant charge for up to 25 feet from the factory. When the
piping is greater than 25 feet, additional charging is necessary. For the additional amount, see the
table below.
Model Add’l Refrigerant Amount for Extra Pipe
9,000 -18,000 0.21 oz/ft
24,000 - 36,000 0.54 oz/ft
Vacuum Procedure (con’t)
7. Confirm that manifold valves are closed and disconnect the vacuum pump.
8. Open the service valves to the fully ‘back-seat’ position to let the refrigerant flow to the
indoor unit and balance the pressure in system.
Important: Do not allow air to enter the connection pipe when removing the hose.
9. Replace service valve caps and tighten.