Protection Against Contamination When Installing Pipes; Example Of Connection - Panasonic U-8ME4XPQM Manuel D'installation

4 Branching the refrigerant piping
For installation of the refrigerant branching kit, refer to the
installation manual delivered with the kit.
(See figure 12)
1 Horizontal surface
Follow the conditions listed below:
- Mount the line branch pipe so that it branches either
horizontally or vertically.
- Mount the header branch pipe so that it branches
horizontally.
Installation of the multi connection piping kit
(See figure 16)
- Install the joints horizontally, so that the caution label (1)
attached to the joint comes to the top.
Do not tilt the joint more than 15° (see view A).
Do not install the joint vertically (see view B).
- Make sure that the total length of the piping connected to
the joint is absolute straight for more than 500 mm. Only
if a straight field piping of more than 120 mm is
connected, more than 500 mm of straight section can be
ensured.
- Improper installation may lead to malfunction of the
outdoor unit.
5 Piping length restrictions
Make sure to perform the piping installation within the range of
the maximum allowable pipe length, allowable level difference
and allowable length after
"6.6. Example of connection" on page 9.
6.5. Protection against contamination when
installing pipes
- Take measures to prevent foreign materials like moisture and
contamination from mixing into the system.
Installation period
More than a month
Less than a month
Regardless of the period
- Great caution is needed when passing copper tubes through
walls.
- Block all gaps in the holes for passing out piping and wiring
using sealing material (field supply). (The capacity of the unit
will drop and small animals may enter the machine.)
Example: passing piping out through the front
1
After all the piping has been connected, make sure there is
no gas leak. Use nitrogen to perform a gas leak check.
U-8~16ME4XPQM
Urban Multi air conditioner
4PW40728-1
branching as indicated in
Protection method
Pinch the pipe
Pinch or tape the pipe
1 Plug the areas marked with
" ".
(When the piping is routed
from the front panel.)
Installation manual
8