Daikin R-410A Installation Manual page 32

Installation
7-1 Optional parts COOL/HEAT selector
S1S ..........................Selector switch (fan, cool/heat)
S2S ..........................Selector switch (cool/heat)
NOTE
Use copper conductors only.
•
When using the adaptor for sequential start, refer to Sec-
•
tion 7-4, Examples, on Page ____
For connection wiring to outdoor-outdoor transmission F1-
•
F2, outdoor-indoor transmission F1-F2, outdoor-multi
transmission Q1-Q2, refer to Section 7-4, Examples, on
Page ___
For connection wiring to the central remote controller, refer
•
to the installation manual of the central remote controller.
Use insulated wire for the power cord.
•
7-2 Power circuit and cable requirements
A power circuit (see table below) must be provided for
connection of the unit. This circuit must be protected with
the required safety devices, i.e. a main switch, a slow
blow fuse on each phase and a ground leak detector.
Phase
and Voltage
Models
frequency
RXYQ72/
φ3, 60Hz
208-230V
96MTJU
RXYQ144/
φ3, 60Hz
168/ 208-230V
192MTJU
When using residual current operated circuit breakers, be
sure to use a high-speed type 200mA rated residual oper-
ating current.
NOTE
Select the power supply cable in accordance with relevant
•
local and national regulations.
Wire size must comply with the applicable local and
•
national code.
Specifications for local wiring power cords and branch wir-
•
ing are must be in compliance with local code.
7-3 General
Make sure to connect the power source wire to the power
•
source terminal block and to clamp it as shown in figure 14.
Never install a phase advancing capacitor. This unit is
•
equipped with an inverter and installing a phase advancing
capacitor reduces the power factor improvement factor
and may cause the capacitor to overheat due to high-fre-
quency waves. Keep power imbalance within 2% of the
supply rating.
1. Large imbalances shorten the life of the smoothing
capacitor.
2. When power imbalances exceed 4% of the supply rat-
ing, the product halts operation as a protective measure,
and an error indicator is transmitted.
Follow the Electrical Wiring diagram when carrying out
•
any electrical wiring.
Only proceed with wiring work after blocking off all power.
•
Always ground wires in accordance with national regula-
•
tions of the pertinent country.
This unit uses an inverter, and therefore generates noise,
•
which must be reduced to avoid interfering with other
devices. The outer casing of the product may take on an
31
Recom-
Transmission
mended
line selection
fuses
60A AWG 18
60A + 60A AWG 18
electrical charge due to leaked electrical current, which
then must be discharged with the grounding.
This unit uses an inverter so be sure to install a ground
•
leak detector that can handle higher harmonics to prevent
malfunctioning of the ground leak detector.
Ground leak detectors which are especially for protecting
•
ground-faults should be used in conjunction with main
switch or fuse for use with wiring.
DANGER
This unit has a negative phase protection circuit that
should only be operated after the unit wiring is connected.
Do not ground units to water pipes, telephone wires or
lightning rods because incomplete grounding could cause
a severe shock hazard resulting in severe injury or death,
and to gas pipes because a gas leak could result in an
explosion which could lead to severe injury or death.
7-4 Examples
System example Refer to _______
Field power supply
1.
Main switch
2.
Ground leak detector
3.
Fuse
4.
COOL / HEAT selector
5.
Remote controller
6.
power supply wiring
transmission wiring Wiring: 2-conductor, 18 AWG,
stranded, non-shielded copper cable / PVC or vinyl jacket
Field line connection
L1, L2, L3, phase of the power cord should be clamped to
the safety catch using the included clamp material.
The green and yellow striped wrapped wires should be
used for grounding.
Refer to figure 14.
Power supply
1.
(208~230 V, Three-phase)
Branch switch, overcurrent breaker
2.
Grounding wire
3.
Ground eakage breaker
4.
Section A
5.
Attach insulation sleeves.
6.
Power supply terminal block
7.
Grounding terminal
8.
Retain the ground wire along with the power supply
9.
wiring using the accessory clamps (1).
Retain the power supply wiring to the bracket using the
10.
accessory clamps (1).
Grounding wire
11.
When wiring, do not allow the ground wire to contact
12.
the compressor lead wires. If the wire contacts each
other, adverse effects may occur to other units.
When connecting two wires to one terminal, ensure
13.
that the crimp-style terminals face with each other
back to back.
Moreover, make sure that the wire of the smaller gauge
is located above.
Terminal block
14.
EDUS39-605
Installation of Outdoor Units