Forming Of The Piping; Air Purging - Friedrich J Serie Manuel D'installation

Forming of the Piping

Form the piping by wrapping the connecting
portion of the indoor unit with insulation mate-
rial and secure it with two kinds of vinyl tapes.
- If you want to connect an additional drain
hose, the end of the drain outlet should be
routed above the ground. Secure the drain
hose appropriately.
Drain hose
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.
In cases, where the outdoor unit is installed
above the Indoor unit, perform the following.
Seal small openings
around pipings with a
gum type sealant.
Saddle
Trap is required to prevent water
from entering into electrical parts.
Pipe
Vinyl tape(narrow)
Wrap with
vinyl tape(wide)
Connecting cable
Pipings
Taping
Drain hose
In cases where the outdoor unit is installed
above the Indoor unit perform the following.
1
Tape the piping and connecting cable from
down to up.
2
Secure the taped piping along the exterior
wall. Form a trap to prevent water entering
the room.
3
Fix the piping onto the wall using saddle or
equivalent

Air Purging

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
and block capillary tubing.
- Water may lead to corrosion of parts in the
refrigeration system.
Therefore, after evacuating the system, take a
leak test for the piping and tubing between the
indoor and outdoor unit.
19
Seal a small opening
around the pipings
with gum type sealant.
Trap
Trap