Daikin GYEQ20AN Service Manual page 70

Wiring Manual
2. Wiring Connection and Capacity
2
Wiring Connection and Capacity
Selection of Wiring and Breakers
CAUTION
Wiring
The minimum wire diameter for power supply specifications and wiring specifications (power supply
wiring, communication wiring, and remote control wiring) is listed in the table below.
Type
Indoor unit
GYEQ20AN
Outdoor unit
GYEQ30AN
* 1. Black VV cable (two-or three-core)
* 2. Sheathed vinyl cord or cable (two-core)
Maximum length: 1000 m or shorter (total extended length: 2000 m)
When using a shielded cable, be sure to ground only one end of the shielded cable. Do not ground both ends.
Maximum number of branches: 16 (no subbranches)
* 3. Sheathed vinyl cord or cable
Maximum length: 500 m
Indoor unit remote controller: two-core
2
• Ground: 2.5 mm or more (ø1.6 mm) (copper)
Note: If exposed to the outside, use a black cable.
CAUTION
The link (communication) and remote control cables should be chosen from the following:
Vinyl cabtyre round cord
Insulated vinyl sheath cable for control use
Insulated vinyl sheath round cable for control use CVS
Insulated vinyl sheath round cable
600 V vinyl cabtyre cable
Polyethylene insulated vinyl sheath cable
Shielded stranded cable for instrumentation use
Note: When using a shielded cable, be sure to ground only one
end of the shielded cable. Do not ground both ends.
Breaker
Outdoor unit
BS unit
Indoor unit (note)
Note: Requirements may differ depending on the type, number, and capacities of the indoor units you are going to connect. For more
information, see the indoor unit installation manual.
Power supply cable
Outdoor unit capacity
GYEQ20AN
GYEQ30AN
59
There are a variety of wiring methods for branch circuits. Select the appropriate wiring size, breaker,
etc. in accordance with "Technical Standards for Electrical Equipment" and "Internal Wiring Rules".
Do not use single-core wires. They can cause incomplete contact or damage to the terminal block.
Power supply
Power supply
Phase Voltage Frequency
- V Hz
ø1 220~240 50
ø1 200 50
ø1 200 50
The outdoor unit should only be connected with one indoor unit, which in turn should be crossover-
connected to the other indoor units. (Unless a central control system is used, the addresses of the
respective units are automatically configured and thus you do not have to manually configure them.)
VCTF
CVV
VVR
VCT
CPEV
MVVS
When using an When using a
isolating switch wiring circuit
Switch Fuse breaker
capacity capacity
Rated current
(A) (A) (A)
30 20 20
30 15 15
30 15 15
The minimum wire
diameter for power
less than 25m
supply specifications
Single phase 3.5
Single phase 2
Maximum current
Wire diameter *1
At starting
2
A mm
- 2.5
24 2.5
30 2.5
Fig. 1 Indoor unit terminal block
Power supply
When using an earth leakage
cable
circuit breaker
2
(mm )
See the table
20 A, 30 mA, 0.1 sec or less 2 or more (ø 1.6 mm or more)
below.
2 or more 15 A, 30 mA, 0.1 sec or less 2 or more (ø 1.6 mm or more)
2 or more 15 A, 30 mA, 0.1 sec or less 2 or more (ø 1.6 mm or more)
Power supply cable (mm
Line length
less than 50m less than 75m
8
5.5
– 2 –
SiAUY361411EA
communication Remote controller
Wire diameter *2 Wire diameter *3
2 2
mm mm
0.75 0.75
0.75 0.75
0.75 0.75
Communication Wires
Earth Screw
Power Supply Wires
056416-00EN00
Grounding wire (copper)
2
(mm )
2
)
less than 100m
14 14
8 14
0FGHP-EN0821 DGJ002
Device Overview