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5 Installation
h
5.3
Connecting the electrical wiring
5.3.1
About connecting the electrical wiring
Typical workflow
Connecting the electrical wiring typically consists of the following
stages:
1
Making sure the power supply system complies with the
electrical specifications of the units.
2
Connecting the electrical wiring to the fan coil unit.
3
Changing the electrical wiring direction (if applicable).
5.3.2
Guidelines when connecting the electrical
wiring
When connecting wires of the same gauge, connect them according
to the figure below.
Observe the notes mentioned below when connecting the electrical
wiring.
▪ Do NOT connect wires of different gauge to the same power
supply terminal. Looseness in the connection may cause
overheating.
▪ Do NOT connect wires of different gauge to the same grounding
terminal. Looseness in the connection may deteriorate the
protection.
▪ Use the specified electric wire (refer to
wiring" [ 4 9]). Connect the wire securely to the terminal. Use the
appropriate tightening torque (N•m).
▪ Power supply terminal block tightening torque: 1.44~1.88 N•m.
▪ Keep the wiring neat so that wires do NOT obstruct other
equipment or force the terminal cover to pop open. Make sure the
cover closes tight. Incomplete connections could result in
overheating, and in the worst case, electrical shock or fire.
5.3.3
To connect the electrical wiring to the fan
coil unit
Refer to the wiring diagram label on the terminal cover.
NOTICE
▪ Follow the wiring diagram (delivered with the unit,
located on the terminal cover).
▪ Make sure the electrical wiring does NOT obstruct
proper reattachment of the terminal cover.
1 Remove the terminal cover from the unit.
Installation manual
20
2 Insert the field wiring through the terminal cover rubber (c).
3 Connect the power supply and remote controller cables to the
"Specifications for field
4 Reattach the terminal cover to the unit.
5 Fix the power supply cable with the cable holder.
c
terminal strip.
FWE03~11D
Fan coil units
3P443944-5P – 2021.12
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