Daikin ERQ Series Service Manual page 84

Connecting the wiring: EKEQFCBAV3
Connect the wires to the terminal board according to the wiring
diagram in figure 3. See figure 4 for wiring intake in the control
box. The wiring intake hole indication H1 refers to the H1 cable
of the corresponding wiring diagram.
Connect cables according to specifications of the next table.
Table connection and application
Description
L, N,
Power supply
earth
Expansion valve
(†)
Y1~Y6
connection
Thermistor R2T
R1,R2
(liquid pipe)
Thermistor R3T
R3,R4
(gas pipe)
Remote controller
P1,P2
(optional)
Communication to
F1,F2
outdoor unit
T1,T2 ON/OFF
C1,C2 Error signal
(#)
C3,C4 Operation signal
(**)
C5,C6 Capacity step
C7,C8 Fan signal
C9,C10 Defrost signal
(*) Recommended size (all wiring must comply with local codes).
(†) For EKEXV400 and 500, Y5 does not need to be connected.
(‡) The maximum length depends on the external device that is connected (controller/relay,....)
(#) Operation signal: indicates compressor operation.
(**) Only necessary for capacity controlled system.
Wiring diagram
A1P.....................Printed circuit board
A2P.....................Printed circuit board (for voltage conversion)
A3P.....................Printed circuit board (power supply)
F1U.....................Fuse (250 V, F5A)(A1P)
F2U.....................Fuse (250 V, T1A)(A3P)
F3U.....................Field fuse
HAP ....................Light emitting diode (service monitor-green)
K2R.....................Magnetic relay (error status)
K3R.....................Magnetic relay (operation / compressor ON/OFF)
K4R.....................Magnetic relay (fan)
K5R.....................Magnetic relay (defrost signal)
K1R,KAR,KPR....Magnetic relay
Q1DI ...................Earth leakage breaker
R2T.....................Thermistor (liquid)
R3T.....................Thermistor (gas)
R5 .......................Resistance (120 )
R6 .......................Capacity adaptor
T1R.....................Transformer (220 V/21.8 V)
X1M,X2M,X3M ...Terminal block
Y1E.....................Electronic expansion valve
X1M-C7/C8.........Output: fan ON/OFF
X1M-C9/C10.......Output: defrost signal
X1M-R1/R2.........Thermistor liquid
X1M-R3/R4.........Thermistor gas
X1M-Y1~6 ..........Expansion valve
EKEQFCBAV3 + EKEQDCBV3
Option kit for combination of Daikin condensing units
with field supplied air handling units
4P383212-1 - 2014.08
Connect to Type of cable
Power supply H05VV-F3G2.5
Expansion valve kit LIYCY3 x 2 x 0.75
—
H05VV-F2 x 0.75
Outdoor unit
Controller field supply LIYCY4 x 2 x 0.75
Air handling unit fan
H05VV-F3G2.5
field supply
Controller field supply LIYCY4 x 2 x 0.75
Take special precaution for connection to the
controller (field supply). Do not miswire the output
signals nor the input signal (ON/OFF). This mistake
could damage the entire system.
The polarity of the capacity step connection is:
C =minus pole, C
5 6
Cross section Maximum length
2 (*)
(mm ) (m)
2.5 —
20
Standard 2.5
Maximum 20
0.75
100
(‡)
2.5 —
0.75
(‡)
X2M-C1/C2 ........ Output: error status
X2M-C3/C4 ........ Output: operation / compressor ON/OFF
X2M-C5/C6 ........ Input: 0-10 V DC capacity control
X2M-F1/F2......... Communication outdoor unit
X2M-P1/P2 ........ Communication remote controller
X2M-T1/T2......... Input: ON/OFF
........... Field wiring
L......................... Live
N ........................ Neutral
, ......... Connector
......................... Wire clamp
..................... Protective earth (screw)
............... Separate component
............... Optional accessory
BLK .................... Black
BLU.................... Blue
BRN ................... Brown
GRN................... Green
GRY ................... Gray
ORG .................. Orange
PNK ................... Pink
RED ................... Red
WHT .................. White
YLW ................... Yellow
=plus pole.
Specifications
Power supply 230 V 1~ 50 Hz
Digital output 12 V DC
Analog input 16 V DC
Communication line 16 V DC
Digital input 16 V DC
Digital output: voltage free.
Maximum 230 V, maximum 0,5 A
Analog input: 0–10 V
Digital output: voltage free.
Maximum 230 V, maximum 2 A
Digital output: voltage free.
Maximum 230 V, maximum 0,5 A
Installation and operation manual
75