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• Hydrobox • Heating only hydrobox for VRV
®
• HXHD-A
• VRV
®
Systems • Hydrobox
10
6
Wiring diagrams
6 - 1 Wiring Diagrams - Single Phase
HXHD-A Control
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
NOTES to go through before starting the unit:
4TW59916-1B(2)
Only for Backup heater option
Only for
Backup
heater option
Only for room thermostat (wired) option
Only for external
temperature sensor
option
Only for demand PCB option
220-240 VAC output
maximum load: 0.3 A
Only for digital I/O PCB option
DHW mode
on/of
f output
Alarm output
Unit heating/cooling on/of
f output
Cooling mode
on/of
f output
Maximum load:
0.3 A - 250 VAC
Minimum load:
20 mA - 5 VDC
Only for room thermostat (wireless) option
Only for domestic
hot water tank
Only for domestic
hot water tank
Only for remote user
interface option
User interface
Remote user interface
Transmission wiring:
Indoor/outdoor unit wiring
(refer to manual for more details)
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
Only for units with
cooling function
220-240 VAC output
maximum load: 0.3 A
HAP
NORM
EMG
HAP
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