Daikin FCAHG71FVEB, Installation And Operation Manual

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5 Installation
Installation and operation manual
8
FCAHG71~140FVEB
Split system air conditioners
4P429472-1 – 2015.12
▪ Flare connections . Connect refrigerant piping to the unit using
flare connections.
▪ Insulation . Insulate the refrigerant piping on the indoor unit as
follows:
A B
a d c e f b b a d c e f b b
2
4
3
g
1
2 3
4
g
A B
1
A Gas piping
B Liquid piping
a Insulation material (field supply)
b Cable tie (accessory)
c Insulation pieces: Large (gas pipe), small (liquid pipe)
(accessories)
d Flare nut (attached to the unit)
e Refrigerant pipe connection (attached to the unit)
f Unit
g Sealing pads: Medium 1 (gas pipe), medium 2 (liquid pipe)
(accessories)
1 Turn up the seams of the insulation pieces.
2 Attach to the base of the unit.
3 Tighten the cable ties on the insulation pieces.
4 Wrap the sealing pad from the base of the unit to the top of
the flare nut.
NOTICE
Make sure to insulate all refrigerant piping. Any exposed
piping might cause condensation.
5.3 Connecting the electrical wiring
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
5.3.1 Guidelines when connecting the electrical
wiring
Tightening torques
Wiring Screw size Tightening torque
(N•m)
Interconnection
cable
(indoor↔outdoor) M4 1.18~1.44
User interface cable M3.5 0.79~0.97
5.3.2 Specifications of standard wiring
components
Component Specification
Interconnection cable
(indoor↔outdoor) Minimum cable section of
2.5 mm² and applicable for
230 V
User interface cable Vinyl cords with 0.75 to
1.25 mm² sheath or cables
(2‑core wires)
Maximum 500 m
5.3.3 To connect the electrical wiring on the
indoor unit
NOTICE
▪ Follow the wiring diagram (delivered with the unit,
located at the inside of the service cover).
▪ For instructions on how to connect the decoration panel
and the sensor kit, see the wiring instruction sheet
(delivered with the unit, inside the accessory bag).
▪ Make sure the electrical wiring does NOT obstruct
proper reattachment of the service cover.
It is important to keep the power supply and the transmission wiring
separated from each other. In order to avoid any electrical
interference the distance between both wiring should always be at
least 50 mm.
NOTICE
Be sure to keep the power line and transmission line apart
from each other. Transmission wiring and power supply
wiring may cross, but may not run parallel.
1 Remove the service cover.
2 User interface cable : Route the cable through the frame,
connect the cable to the terminal block, and fix the cable with a
cable tie.
3 Interconnection cable (indoor↔outdoor): Route the cable
through the frame, connect the cable to the terminal block
(make sure the numbers match with the numbers on the
outdoor unit, and connect the earth wire), and fix the cable with
a cable tie.
4 Divide the small sealing (accessory) and wrap them around the
cables to prevent water from entering the unit. Seal all gaps to
prevent small animals from entering the system.
WARNING
Provide adequate measures to prevent that the unit can be
used as a shelter by small animals. Small animals that
make contact with electrical parts can cause malfunctions,
smoke or fire.
5 Reattach the service cover.
1~ 50 Hz
220-240 V
b
a
e2
e1
c
d
a Interconnection cable
b Power supply cable
c Earth leakage circuit breaker
d Fuse
e1 Main user interface
e2 Optional user interface