Panasonic CU-YL28HBE5 Service Manual page 48

10.2.5. Transporting And Installing The Outdoor Unit
• Transporting
1. The outdoor unit should be transported in its original
packaging as close to the installation location as
possible.
2. If suspending the outdoor unit, use a rope or belt, and
use cloth or wood as padding in order to avoid
damaging the unit.
• Installation
1. Read the "Selecting the outdoor unit installation
location" section thoroughly before installing the
outdoor unit.
2. If installing the unit to a concrete base or other solid
base, use M10 or W3/8 bolts and nuts to secure the
unit, and ensure that the unit is fully upright and level.
(The anchor bolt positions are shown in the diagram
at the right side.)
In particular, install the unit at a distance from the
neighbouring building which conforms to regulations
specified by local noise emission regulation
standards.
3. Do not install the outdoor unit to the building's roof.
4. If there is a possibility that vibration may be
transmitted to the rooms of the building, place rubber insulation between the unit and the installation surface.
5. Drain water will be discharged from the outdoor unit when operating the system in heating or defrosting modes. Select an
installation location which will allow the water to drain away properly, or provide a drainage channel so that the water can
drain away.
(If this is not done, the drain water may freeze during winter, or the water may spill down to areas underneath the
installation location.)
• If a drain pipe needs to be installed, insert the accessory drain elbow into the mounting hole at the bottom of the outdoor unit, and
connect a hose with an inside diameter of 15mm to this drain elbow.
(The hose is not supplied.)
If using the drain elbow, install the outdoor unit on a base which is at least 5cm high.
NOTE
In cold regions (where the outdoor air temperature can drop to 0°C or below continuously for 2-3 days), the drain water may freeze,
and this may prevent the fan from operating. Do not use the drain elbow in such cases.
10.2.6. Notes On Reuse Of Existing Refrigerant Piping
Observe the followings when reusing the existing refrigerant piping.
Inadequate refrigerant piping could result in failure.
• In the circumstances listed below, do not reuse any refrigerant piping. Instead, make sure to install a new piping.
(Reuse is not allowed.)
- Heat insulation is not provided for either liquid-side or gas-side piping or both.
- The existing refrigerant pipe has been left in an open condition.
- The size of the existing refrigerant piping does not meet the applicable size requirement. (Applicable piping size is as
indicated in the table below.)
- The length of the existing refrigerant piping is not within the range of allowable piping length. (Allowable length range is as
indicated in the table below.)
- Branch pipe is used for twin type or branch piping is run on indoor side.
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