Requirements Of Communication Wire Selection - Lennox VRF VECC007C432P Installation Manual

Notes:
① The unit shall be installed in accordance with national standards or local regulations.
② Only qualified personnel can carry out installation work, please contact with local
dealer before installation.
③ Make sure all the installation work completed before energizing.

3.3 Requirements of communication wire selection

Note!
If air conditioner used under strong electronic-magnetic interference circumstance, STP
(shielded twisted pair) communication cable must be adopted.
3.3.1 Select Communication Line for Indoor Unit and Wired Controller
Total length of
communication line
Material type between indoor unit
and wired controller
Light/Ordinary
polyvinyl chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
3.3.2 Select Communication Line for Indoor Unit and Outdoor Unit
Fig 3.3.1
Wire size (mm
L (m)
2×0.75～2×1.25
L≤250m
Fig 3.3.2
Compact 4-Way Cassette Indoor Unit
Material
2 )
Standard
1. Total length of communication
line can't exceed 250m.
2. The cord shall be Circular cord
(the cores shall be twisted
IEC
together).
60227-5
3. If unit is installed in places with
intense magnetic field or strong
interference, it is necessary to
use shielded wire.
6
Remarks