8 Technical data
Installation manual
22
EWAQ+008BAVP
Packaged air-cooled water chillers and packaged air to water heat
pumps
4P478610-1 – 2017.02
English
Translation
Wiring depending on model
Switch box
PCB
(4) Legend
(4) Legend
A1P
Main PCB
A2P
Current loop PCB
M2S
#
Shut-off valve
PCB3
Service PCB
Q*DI
#
Earth leakage circuit breaker
R6T
*
External outdoor ambient sensor
option
TR1
Power supply transformer
X*M
Terminal strip
X*A, X*Y
Connector
*:
Optional
#:
Field supply
Control box
English
Translation
(1) Connection diagram
(1) Connection diagram
Option box
Option box
BUH option
Backup heater option
Preferential kWh rate power
supply contact: 5 V DC detection
(voltage supplied by PCB)
Preferential kWh rate power
supply contact: 5 V DC detection
(voltage supplied by PCB)
Hydro switch box
Hydro switch box
Control box
Control box
NO valve
Normal open valve
Only for wired On/OFF
thermostat
Only for wired On/OFF
thermostat
Only for wireless On/OFF
thermostat
Only for wireless On/OFF
thermostat
Only for ext. sensor (floor or
ambient)
Only for external sensor (floor or
ambient)
(2) Notes
(2) Notes
X1M
Main terminal
Earth wiring
15
Wire number 15
Field supply
1
Several wiring possibilities
Option
Wiring depending on model
Switch box
PCB
(3) Control switch box layout
(3) Control switch box layout
(4) Legend
(4) Legend
A3P
*
On/OFF thermostat (PC=power
circuit)
A4P
*
Extension PCB (control, optional)
A5P
User interface PCB
A7P
*
Receiver PCB (wireless On/OFF
thermostat)
K1A
Relay for heating
K2A
Relay for cooling
M2S
#
Shut-OFF valve
M4S
*
Valve kit
English
Translation
R1H (A3P)
*
Humidity sensor
PC (A7P)
Power circuit
Q*DI
#
Earth leakage circuit breaker
R1T (A3P)
*
Ambient sensor On/OFF
thermostat
R2T
*
External sensor (floor or ambient)
S1S
#
Preferential kWh rate power
supply contact
X*A, X*Y
Connector
X*M
Terminal strip
*:
Optional
#:
Field supply
Control box option: backup heater
English
Translation
(1) Connection diagram
(1) Connection diagram
BUH option
Backup heater option
Control box
Control box
Only for ***
Only for ***
(2) Notes
(2) Notes
Earth wiring
15
Wire number 15
Field supply
1
Several wiring possibilities
Option
Wiring depending on model
Switch box
PCB
(3) BUH kit switch box
(3) BUH kit switch box
(4) Legend
(4) Legend
F1B
Overcurrent fuse backup heater
K1M
Contactor backup heater (step 1)
K1R
Relay backup heater (step 1)
K2M
Contactor backup heater (step 2)
(only for *9W)
K2R
Relay backup heater (step 2)
(only for *9W)
K5M
Safety contactor backup heater
(only for *9W)
Q*DI
#
Earth leakage circuit breaker
Q1L
Thermal protector backup heater
R2T
Outlet backup heater thermistor
X*M
Thermistor strip
*:
Optional
#:
Field supply
Control box option: option box
English
Translation
(1) Connection diagram
(1) Connection diagram
Control box
Control box
Option box
Option box
Indoor
Indoor
Alarm output
Alarm output
Space C/H On/OFF output
Space cooling/heating On/OFF
output
Max. voltage
Maximum voltage
Max. load
Maximum load
