2
When Installing...
...In a Ceiling or Wall
Make sure the ceiling/wall is strong enough to hold the unit's weight. It may be necessary to construct a strong
wood or metal frame to provide added support.
...In a Room
Properly insulate any tubing run inside a room to prevent "sweating" that can cause dripping and water damage
to walls and floors.
...In Moist or Uneven Locations
Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the outdoor unit. This
prevents water damage and abnormal vibration.
...In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air baffle.
...In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher than drifting snow. Provide snow vents.
When Connecting Refrigerant Tubing
x
Use the flare method for connecting tubing.
x
Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them, then
tighten the nut with a torque wrench for a leakfree connection.
x
Check carefully for leaks before starting the test run.
When Servicing
x
Turn the power OFF at the main power box (mains) before opening the unit to check or repair electrical parts
and wiring.
x
Keep your fingers and clothing away from any moving parts.
x
Clean up the site after you finish, remembering to check that no metal scraps or bits of wiring have been left
inside the unit being serviced.
Gas Supply Pressure
Others
x
Ventilate any enclosed areas when installing or testing the refrigeration system. Escaped refrigerant gas, on
contact with fire or heat, can produce dangerously toxic gas.
x
Confirm upon completing installation that no refrigerant gas is leaking. If escaped gas comes in contact with
a stove, gas water heater, electric room heater or other heat source, it can produce dangerously toxic gas.
Pressure (kPa)
Gas Supply
G20, G25
(Natural Gas)
Min.
1.0
Normal
2.0
Max.
2.5
Pressure (kPa)
Gas Supply
G31
(LPG)
Min.
2.0
Normal
2.8
Max.
3.3
