Preparing The Installation Of The Ducts - Daikin VAM350J7VEB Installer And User Reference Manual

5 Preparation
Power supply wiring
Wire
Size Wire size MUST comply with the applicable
Transmission wiring
Wiring
Size
Precautions
When connecting more than one wire to the power supply wiring,
use a 2 mm² (Ø1.6 mm) gauge wire.
When using 2 power wires of a gauge greater than 2 mm²
(Ø1.6 mm), branch the line outside the terminal board of the unit, in
accordance with electrical equipment standards. The branch MUST
be sheathed to provide a degree of insulation equal to or greater
than the power supply wiring itself.
Keep the total current of crossover wiring between indoor units to
less than 12 A.
Do NOT connect wires of different gauge to the same grounding
terminal. Loose connections may reduce the protection.
For the controller wiring, refer to the installation manual of the
controller delivered with the controller.
Wiring example
a
b
d
Out
1 2
L N
VRV
L N 1 2 1 2
P1 P2 F1 F1 T1 T1
c
e
P1
P2
VRV
g
a Outdoor unit/BS unit
b Switch box
c Indoor unit
d Power supply 220-240 V~50 Hz
e Controller for VRV
f Transmission wiring
g Controller for heat reclaim ventilation unit
▪ All transmission wiring, except for the controller wires, is polarised
and MUST match the terminal symbol.
▪ Use shielded cable for the transmission wiring. Ground the shield
of the shielded cable to at the grounding screw, with the C-cup
washer.
Installer and user reference guide
14
H05VV-U3G
legislation.
Shielded wire (2 wire)
0.75~1.25 mm²
d
L N
HRV
P2 P1 F1 F2 JC J1 J2 J3 L N
f
P1 P2
HRV
f
P1 P2
5.5 Preparing the installation of the
ducts
INFORMATION
▪ Flexible ducting with sound insulation is effective to
reduce blowing noises.
▪ When selecting installation materials, consider the
required volume of air flow and the acceptable level of
noise for that particular installation.
▪ When room air infiltrates into the ceiling and the
temperature and humidity in the ceiling become too
high, insulate the metal parts of the unit.
▪ ONLY use the inspection hole to access the inside of
the unit.
▪ The sound pressure level is less than 70 dBA.
CAUTION
▪ For safety reasons, the required minimum length of the
ducting is 1.5 m. If the ducting is shorter, or if no
ducting is installed, then you MUST install grilles in the
duct openings or the openings of the unit.
▪ Make sure no wind can blow in the ducting.
VAM350~2000J7VEB
Heat reclaim ventilation unit
4P487293-1A – 2018.05