• VRV
®
Systems • Hydrobox
9
• Hydrobox • Heating only hydrobox for VRV
®
• HXHD-A
6
Wiring diagrams
6 - 1 Wiring Diagrams - Single Phase
HXHD-A Compressor
Part Nr
Description
Part Nr
Description
Part Nr
Description
A1P
Main PCB
K1E-K3E
Electronic expansion valve
R7T
Liquid thermistor R134a
A2P
User interface PCB
K*R (A*P)
PCB relay
R8T
Fin thermistor
A3P
Control PCB
K1S
* 3-way valve
R9T
Leaving water thermistor (cooling)
A4P
Inverter PCB
K2S
3-way valve
R10T
Liquid thermistor (cooling)
A5P
QA PCB
K3S
2-way valve
R11T
Suction thermistor (cooling)
A6P
Filter PCB
K4S
# 2-way valve
RC (A*P)
Receiver circuit
A7P
* Digital I/O PCB
M1C
Compressor
S1PH
High pressure switch
A8P
* Demand PCB
M1F
Switch box cooling fan
S1S
# Benefit kWh rate power supply contact
A9P
Multi tenant PCB
M1P-M2P
DC inverter pump
S3S
# Input multiple setpoint 1
A10P
* Thermostat PCB
PC (A11P)
* Power circuit
S4S
# Input multiple setpoint 2
A11P
* Receiver PCB
PHC1 (A7P)
* Optocoupler input circuit
SS1 (A1P)
Selector switch (emergency)
B1PH
High pressure sensor
PS (A*P)
Switching power supply
SS1 (A2P)
Selector switch (master slave)
B1PL
Low pressure sensor
Q1DI-Q2DI
# Earth leakage protector
SS1 (A7P)
* Selector switch
C1-C3
Filter capacitor
Q2L
Thermal protector water piping
TC (A*P)
Transmitter circuit
C1-C3 (A4P)
PCB capacitor
R1-R2 (A4P)
Resistance
T1R-T2R (A*P)
Diode bridge
DS1 A*P)
Dip switch
R1L
Reactor
T3R
Power module
F1U
Fuse (T, 3.2A, 250V)
R1H (A10P)
* Humidity sensor
V1C-V8C
Ferrite core noise filter
F1U (A1P, A3P, A9P)
Fuse (T, 3.15A, 250V)
R1T (A10P)
* Ambient sensor
X1M-X3M
Terminal strip
F1U (A6P)
Fuse (T, 6.3A, 250V)
R2T
* Domestic hot water tank thermistor
X*M (A*P)
* PCB terminal strip
F1U-F2U (A7P)
* Fuse (5A, 250V)
R2T
* External sensor (floor or ambient)
X1Y-X4Y
Connector
F3U-F4U (A*P)
Fuse (T, 6.3A, 250V)
R3T
Liquid thermistor R410A
Z1F-Z5F (A*P)
Noise filter
HAP (A*P)
PCB LED
R4T
Returning water thermistor
IPM1
Integrated power module
R5T
Leaving water thermistor (heating)
* Included in option kit
K1A-K3A
Interface relay
R6T
Discharge thermistor
# Field supplied
4TW59916-1B(1)
POWER SUPPLY
(only for normal power supply installation)
1~50Hz 24V AC
Multi tenant power supply
(refer to manual for more details)
1~50Hz 24V AC
Multi tenant power supply
(refer to manual for more details)
1~50Hz 24V AC
power supply
1~50Hz 24V AC
Normal kWh power supply
1~50Hz 24V AC
Benefit kWh rate power supply
POWER SUPPLY
(only for benefit kWh rate power supply installation)
Only for units with cooling function
Only for units with
cooling function
Only for units with
cooling function
HAP
**: Remove 2 wire bridges on X2M terminal positions 8-10 and 9-11.
See page 6 for installation of the benefit kWh rate
power supply contact. (see installation manual)
NOTES to go through before starting the unit:
X1M: Main terminal
X2M: Field wiring terminal for high voltage
X3M: Field wiring terminal for low voltage
— **/12.2: Connection **continiues on page 12 colomn 2
➀
: Several wiring possibilities
User installed options:
Backup heater (includes wiring diagram of option)
Domestic hot water tank
Room thermostat (wired)
Room thermostat (wireless)
External temperature sensor
Remote user interface
Digital I/O PCB
Demand PCB
Wiring depending on model
Not mounted in switch box
Option
Field supply
PCB
Earth wiring