Daikin GYEQ20AN Service Manual page 73

SiAUY361411EA
Wiring connection locations
How to perform wiring work
Wiring example
Power supply
single phase 220~240V
Precautions when making a crossover connection for a remote controller
Do not make a crossover connection for a remote controller across multiple BS units.
Outdoor
unit
BS
unit
Indoor
unit
(Parent)
Remote
controller
on hand
Follow the indoor unit work manual for the wiring connection on the indoor unit.
Sequential Startup
The startup of the outdoor units are sequential. After the system has confirmed the start of the first
outdoor unit engine, it attempts to start the second outdoor unit, and so on.
Device Overview
Enlargement
illustration of
the unit interior
Terminal block for transmission
(communication) wiring
Heating/
Link cable
cooling between
switching indoor and
outdoor
remote
controller
F
A B C
1
(Rear view)
1 2 3 4 5 6 7 8 9 10 11 1213
Single phase
Outdoor unit
200V
Heating/ Link cable
Link cable Link cable Link cable
between Remote
cooling between between between
outdoor and communica- Power
switching indoor and indoor and outdoor and
outdoor tion supply
outdoor outdoor outdoor
remote
units link cable
units units units
controller
(Niko-multi)
F F F F L N E
A B C 1 2 + - + -
1 2 1 2
To other outdoor unit and centralized controller
A
F F F F
L N
1 2 1 2
B
Indoor side Outdoor side
C
BS unit
F F F F
1 2 1 2
Single phase
Indoor unit Indoor unit
220~240 V
L N P1 P2
P1 P2
P1 P2
Remote controller on hand
No good
BS BS BS
unit unit unit
Indoor Indoor Indoor
unit unit unit
(Child) (Child) (Child)
2. Wiring Connection and Capacity
Link cable
Link cable Link cable
between Remote
between between
outdoor and communica-
indoor and outdoor and
outdoor tion
outdoor outdoor
units
link cable
units units units
(Niko-multi)
F F F
1 2
+ - + -
2 1 2
(1) You can switch between cooling/heating mode on a BS unit by BS unit basis.
(2) You can switch between cooling/heating mode by either remote controller on hand, cooling/heating
switching remote controller, or centralized cooling/heating remote controller. (optional)
A
F F F F F F
L N L N
1 2 1 2 1 2
B
Indoor side Outdoor side Indoor side Outdoor side
C
BS unit BS unit
F F F F F F
1 2 1 2 1 2
Indoor unit Indoor unit Indoor unit
L N P1 P2 L N P1 P2 L N P1 P2
P1 P2 P1 P2 P1 P2
Remote Remote Remote controller
controller on hand controller on hand on hand
BS
unit
Outdoor
unit
BS
unit
(Parent)
Remote
controller
on hand
– 5 –
Wiring Manual
Terminal block for
power supply wiring
*Please refer to Wiring
Connection in Chapter 2.
032774-02EN00
A
F F
1 2
B
C
Heating/cooling switching
remote controller (optional)
032793-00EN03
Good
BS BS BS
unit unit unit
(Child) (Child) (Child)
026741-00E
0FGHP-EN0821 DGJ002
62