Routing The Piping; Leak Testing - Friedrich M09YJ Manuel D'installation

20

Routing the piping

In cases where the outdoor unit is installed
below the indoor unit perform the following.
1
Tape the piping, drain hose and connecting
cable from down to up.
2
Secure the tapped piping along the exterior
wall using saddle or equivalent.
Seal small openings
around pipings with a
gum type sealant.
Saddle
Trap is required to prevent water
from entering into electrical parts.
In cases where the outdoor unit is installed
above the Indoor unit perform the following.
1
2
3
Connecting cable
Pipings
Taping
Drain hose

Leak testing

The air and moisture remaining in the refriger-
ant system have undesirable effects as indi-
cated below.
- Pressure in the system rises.
- Operating current rises.
- Cooling(or heating) efficiency drops.
- Moisture in the refrigerant circuit may freeze
- Water may lead to corrosion of parts in the
Therefore, after evacuating the system, take a
leak test for the piping and tubing between the
indoor and outdoor unit.
Tape the piping and connecting cable from
down to up.
Secure the taped piping along the exterior
wall. Form a trap to prevent water entering
the room.
Fix the piping onto the wall using saddle or
equivalent
Seal a small opening
around the pipings
with gum type sealant.
and block capillary tubing.
refrigeration system.
Trap
Trap