Friedrich The Insider Installation Manual page 17

CAUTION
!
The power connecting cable between
the outdoor and indoor units must com-
ply with the following specifications:
NRTL Recognized (for example, UL or
ETL recognized and CSA certified).
AWG 14/4 is the minimum recommend-
ed wire size, however, the selected con-
ductors must comply with local codes
and be suitable for installation in wet
locations.
If the supply cord is damaged, it must be
replaced by a special cord or assembly
available from the manufacturer of its
service agent. When the connection line
between the indoor unit and outdooor
unit and outdoor unit is over 1.57inch,
connect the telecommunication line and
power line separately.
Precautions when laying power wiring
Use round pressure terminals for connections
to the power terminal block.
Round pressure terminal
When none are available, follow the instruc-
tions below.
- Do not connect wiring of different thickness-
es to the power terminal block. (Slack in the
power wiring may cause abnormal heat.)
- When connecting wiring which is the same
thickness, do as shown in the figure below.
- For wiring, use the designated power wire and
connect firmly, then secure to prevent outside
pressure being exerted on the terminal block.
- Use an appropriate screwdriver for tightening
the terinal screws. A screwdriver with a small
head will strip the head and make proper
tighterning impossible.
- Over-tightening the terminal screws may break
them.
Power wire
NOTE
!
Use connection cable NRTL(UL, ETL, CAS...)
listed and stranded copper(4) THHN conduc-
tors, sunlight (UV) resistant ROHS compliant
PVC jacket 600V direct burial listed, approved
for wet conditions. Temperature rated for –
20°C(-4°F) to 90°C(194°F). And this cable
should be enclosed in conduit.
WARNING
!
• Be sure to comply with local and national
codes while running the wire from the
indoor unit to the outdoor unit(size of wire
and wiring method, etc).
• Every wire must be connected firmly.
• No wire should be allowed to touch refrig-
erant tubing, the compressor or any mov-
ing parts.
• The communication wirings of air condi-
tioner should be separate and isolated
from external device's electric wiring
such as computers, elevator, radio &
Television broadcasting facilities, as well
as medical imaging offices.
17