Toshiba ESTIA HWS-455XWHM3-E - Page 29

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Hydro Unit
Installation Manual
EN
Compressor operation output
• Display relay is ON with outdoor unit compressor
operation.
• Volt free contact
AC230 V; 0.5 A (maximum)
DC24 V; 1 A (maximum)
• Connection details: Terminals 3 and 4 (EMG) on
MCC-1217 TB (Refer to “Fig. 7-33”)
▼ Fig. 7-33
*1:Available to change the output signal by function
code 67.
CAUTION
• Be sure to prepare a non-voltage contact for each
terminal.
• Display Relay capacity of “EMG” and “OPERATION”.
Below AC230 V 0.5 A (COS
Ø = 100%)
When connecting loads such as relay coil to “L1, L2”
load, insert noise surge absorber.
Below DC24 V 1 A (Non-inductive load)
When connecting load such as relay coil to “L1, L2”
load, insert the bypass circuit.
Optional inputs to hydro unit
Room Thermostat Input:
2–3: Room thermostat input for cooling mode
1–3: Room thermostat input for heating mode
• Output enabled when either heating or cooling mode
selected on room thermostat. (locally supplied)
• Volt free contacts
• Connection details:
Cooling Connection: Terminals 3 (COM) and 2
(COOL) on MCC-1214TB (Refer to “Fig. 7-34”)
Heating Connection: Terminals 3 (COM) and 1
(HEAT) on MCC-1214TB (Refer to “Fig. 7-34”)
• Setting of DIP switch on the Hydro Unit board:
DIP SW02_4 = ON
▼ Fig. 7-34
Thermostat operation
CAUTION
• Be sure to prepare a non-voltage continuous contact
for each terminal.
• Supplementary Insulation must be added to user
touchable part of switches.
Default (FC67 = 0) Setting value (FC67 = 1)
1 - 2 = Defrost output
3 - 4 = Compressor
operation output
1 - 2 = Alarm output
3 - 4 = During operation
PJ20
CN209
TCB-PCIN3E
4
3
L2
2
1
L1
Defrost
output
Compressor
operation
output
Locally procured
Power
Supply
Power
Supply
Display
Relay K1
Display
Relay K2
Connection Cable
OPERATION
EMG
Hydro unit
main control
board
*1
Cooling Heating
on off on off
2 - 3 open close – –
1 - 3 – – close open
1
2
3
PJ17
CN211
TCB-PCMO3E
Connection
Cable
COM
Locally procured
Thermostat
COOL
HEAT
Cool
Hot
28-EN