Toshiba HWS-802XWHM3-E - Options

4.HYDRO UNIT
Engineering Data book
41
4-7. Options
Optional parts
▼External output board
Feature
Operation and Error monitoring is possible by using Error output control board “TCB-PCIN3E“
Function / Electric wiring diagram
Alarm output : Output enabled when the system is in alarm / fault condition.
Boiler control output : Output enabled when outdoor ambient temperature <-10 °C
Operation output : Display relay is ON with outdoor unit compressor operation.
Defrost output : Display relay is ON when the system in defrost.
CAUTION
• Be sure to prepare a non-voltage point for each terminal.
• Display Relay capacity of "ALERM" and "BOILER", "OPERATION" and "DEFROST"
Below AC230V 0.5A (COS Ø =100%). when connecting load such as relay coil to "L1,L2" load, insert the noise surge
absorber.
Below DC24V 1A (Non-inductive load). when connecting load such as relay coil to "L1,L2" load, insert the bypass circuit.
No. Part name Model name Application Remarks
1 External output board TCB-PCIN3E
Boiler-linked output, Alarm output
Up to two boards (according
to applications)
Defrost signal output, Compressure operation signal
output
2 External input board TCB-PCMO3E
Cooling/heating thermostat input
Up to two boards (according
to applications)
Forced-stop signal input
Hydro unit main control board
Connection
Cable
Local Supply
: Alarm output
TCB-PCIN3E
4
2
3
1
Power Supply
PJ20CN208
K2
K1
L2
L1
: Boiler control output
L2
Display
Relay
Power Supply
L1
Display
Relay
Hydro unit main control board
Connection
Cable
Local Supply
: Defrost output
TCB-PCIN3E
4
2
3
1
Power Supply
PJ20CN209
K2
K1
L2
L1
: Compressure
operation output
L2
Display
Relay
Power Supply
L1
Display
Relay