8 Technical data
Installation manual
21
EWAQ+008BAVP
Packaged air-cooled water chillers and packaged air to water heat
pumps
4P478610-1 – 2017.02
8.2
Wiring diagram: Outdoor unit
See the internal wiring diagram supplied with the unit (on the inside of the outdoor unit switch box cover). The abbreviations used are listed
below.
Outdoor unit: compressor module
Legend:
A1P
Printed circuit board (main)
A2P
Printed circuit board
BS1~BS4 (A2P)
Push-button switch
C1~C3 (A1P)
Capacitor
DS1 (A2P)
DIP switch
E1H
Bottom plate heater (optional)
F1U (A1P)
Fuse T 6.3 A 250 V
F2U (A1P)
Fuse T 31.5 A 250 V
F6U (A1P)
Fuse T 3.15 A 250 V
F7U, F8U
Fuse F 1 A 250 V (optional)
H1P~H7P (A2P)
Light‑emitting diode (service monitor is
orange)
HAP (A1P)
Light‑emitting diode (service monitor is
green)
K1R (A1P)
Magnetic relay (Y1S)
K11M (A1P)
Magnetic contactor
K2R, K10R, K13R~K15R
(A1P)
Magnetic relay
L1R
Reactor
M1C
Compressor motor
M1F
Fan motor
PS (A1P)
Switching power supply
Q1DI
Earth leakage circuit breaker (30 mA)
(field supply)
R1T
Thermistor (air)
R2 , R4~R6 (A1P)
Resistor
R2T
Thermistor (discharge)
R3T
Thermistor (suction)
R4T
Thermistor (heat exchanger)
R5T
Thermistor (heat exchanger middle)
R6T
Thermistor (liquid)
R7T~R9T (A1P)
Thermistor (positive temperature
coefficient)
RC (A1P)
Signal receiver circuit
S1NPH
Pressure sensor
S1PH
High pressure switch
S1PL
Low pressure switch
TC (A1P)
Signal transmission circuit
V1D~V3D (A1P)
Diode
V1R (A1P)
IGBT power module
V2R (A1P)
Diode module
V1T, V2T (A1P)
Insulated gate bipolar transistor (IGBT)
X1M
Terminal strip
Y1E
Electronic expansion valve
Y1S
Solenoid valve (4‑way valve)
Z1C~Z6C
Noise filter (ferrite core)
Z1F~Z3F (A1P)
Noise filter
LA, NA, HR1~HR4, U, V,
W, X*A (A1P, A2P)
Connector
Symbols:
L
Live
N
Neutral
Field wiring
Terminal strip
Connector
Connector
Connection
Protective earth (screw)
Noiseless earth
Terminal
Option
Wiring dependent on model
Colours:
BLK
Black
BLU
Blue
BRN
Brown
GRN
Green
ORG
Orange
RED
Red
WHT
White
YLW
Yellow
Outdoor unit: hydro module
English
Translation
(1) Connection diagram
(1) Connection diagram
Outdoor
Outdoor
Hydro switch box
Hydro switch box
Compressor switch box
Compressor switch box
Only for normal power supply
(standard)
Only for normal power supply
(standard)
Hydro switch box supplied from
compressor module
Hydro switch box supplied from
compressor module
Normal kWh rate power supply
Normal kWh rate power supply
Only for preferential kWh rate
power supply (compressor)
Only for preferential kWh rate
power supply (compressor)
Use normal kWh rate power
supply for hydro switch box
Use normal kWh rate power
supply for hydro switch box
NO valve
Normal open valve
Indoor
Indoor
Control box
Control box
External outdoor ambient sensor
option
External outdoor ambient sensor
option
(2) Hydro switch box layout
(2) Hydro switch box layout
(3) Notes
(3) Notes
X4M
Main terminal
Earth wiring
15
Wire number 15
Field supply
1
Several wiring possibilities
Option
