Daikin RDXYQ8T7V1B, Installation Manual

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5 Installation
Installation manual
6
8T7V1B*
VRV IV heat exchanger unit for indoor installation
4P408444-1B – 2016.04
4.2 Preparing electrical wiring
4.2.1 Safety device requirements
NOTICE
When using residual current operated circuit breakers, be
sure to use a high-speed type 300 mA rated residual
operating current.
Power supply: Heat exchanger unit
The power supply must be protected with the required safety
devices, i.e. a main switch, a slow blow fuse on each phase and an
earth leakage protector in accordance with the applicable legislation.
Selection and sizing of the wiring should be done in accordance with
the applicable legislation based on the information mentioned in the
table below.
Model Minimum circuit
ampacity
Recommended
fuses
RDXYQ5 4.6 A 10 A
RDXYQ8 7.0 A 10 A
▪ Phase and frequency: 1~ 50 Hz
▪ Voltage: 220-240 V
Transmission wiring
Transmission line section:
Transmission wiring Sh shielded cable (2
wires)
Vinyl cords
0.75~1.25 mm²
(using shielded cable for the
transmission wiring is mandatory
for 5 HP, and optional for 8 HP)
Maximum wiring length
(= distance between compressor
unit and furthest indoor unit)
300 m
Total wiring length
(= distance between compressor
unit and all indoor units, and
between compressor unit and
heat exchanger unit)
600 m
If the total transmission wiring exceeds these limits, it may
result in communication error.
5 Installation
5.1 Opening the units
5.1.1 To open the switch box cover of the heat
exchanger unit
DANGER: RISK OF ELECTROCUTION
2×
5.2 Mounting the heat exchanger unit
5.2.1 Guidelines when installing the heat
exchanger unit
INFORMATION
Optional equipment. When installing optional equipment,
also read the installation manual of the optional equipment.
Depending on the field conditions, it might be easier to
install the optional equipment first.
▪ Suspension bolts. Use suspension bolts for installation. Check
whether the ceiling is strong enough to support the weight of the
unit. If there is a risk, reinforce the ceiling before installing the unit.
Attach the hanger bracket to the suspension bolt. Fix it securely
by using a nut and washer from the upper and lower sides of the
hanger bracket.
a1
4×
b
b
a2
c
1497 (mm)
705
255
84
a1 Nut
a2 Double nut
b Washer
c Hanger bracket
▪ Drain water flow. Make sure drain water flows to the drain pipe
connection.
0~2°
0~2°
A
A
B
B
a
a
a
a Drain pipe connection
5.2.2 Guidelines when installing the ducting
The ducting is to be field supplied.
▪ Slope. Make sure the ducting slopes down to prevent water from
flowing into the heat exchanger unit.
a b a
a Ducting
b Heat exchanger unit