Toshiba MMD-VNK502HEX1E Installation Manual page 70

3
Connecting an auxiliary fan or monitoring operation output (External Output)
Power supply
Auxiliary
fan
Lamp or management device
Terminal block for external output
To power supply Relay contact
External device
External device
External device
Connect to the terminal block for external output (1 and 2) in the electrical control box
Connection wire (locally procured): 2-core wire (H07 RN-F or 60245 IEC 66) 1.0 mm
Rated contact
Maximum: 240 VAC, 1 A
Minimum: 220 VAC, 100 mA
Contact is on during normal operation as factory default.
• Contact is off during nighttime heat purge operation or while fan operation is off to protect the unit.
• The operation output settings can be changed. Refer to "Setting for changing the operation output" on
page 73.
4
Connecting an electric damper (electric shutter) (External Output)
220-240 V~, 50 Hz
220 V~, 60 Hz
Power supply
Electric
damper
Terminal block for external output
Connect to the terminal block for external output (3 and 4) in the electrical control box
Connection wire (locally procured): 2-core wire (H07 RN-F or 60245 IEC 66) 1.0 mm
Rated contact (3 to 5: Total value with abnormal signal output)
Maximum: 240 VAC, 1 A
Minimum: 220 VAC, 100 mA
137-EN
220-240 V~, 50 Hz
220 V~, 60 Hz
Contact
If external devices is used working at a higher
voltage and current than the rated values, install
a relay according to the diagram below.
Rated relay: 220-240 VAC
Contact
Terminal block for external output
24 VDC, 1 A
5 VDC, 100 mA
If external output is used working at a higher
voltage and current than the rated values, install
Contact
a relay according to the diagram above (diagram
for connecting an auxiliary fan).
Rated relay: 220-240 VAC
24 VDC, 1 A
5 VDC, 100 mA
– 69 –
The electric damper (electric shutter) works during normal operation, and nighttime heat purge
operation.
• The electric damper (electric shutter) also works in the following circumstances:
* While the operation is paused during nighttime heat purge operation
* While operating in cold mode (Temperature is below −10 °C.)
• The electric damper (electric shutter) does not work in the following circumstances:
* While the operation is stopped
* Before the monitoring operation of nighttime heat purge operation starts
5
Monitoring an abnormal signal or the operation signal of bypass mode (External Output)
Abnormal signal or
operation signal of
normal ventilation
Connect to the terminal block for external output (3 and 5) in the electrical control box
Connection wire (locally procured): 2-core wire (H07 RN-F or 60245 IEC 66) 1.0 mm
Rated contact (3 and 4: Total value with output of the electric damper)
2 to 2.5 mm 2
Maximum: 240 VAC, 1 A
Minimum: 220 VAC, 100 mA
It is possible to monitor an abnormal signal or the operation signal of bypass mode from the Air to Air
Heat Exchanger with DX Coil Unit.
Detection of an abnormal signal is possible, as factory default.
• To change settings so that the operation signal of bypass mode can be detected, refer to "Abnormal signal
/ bypass mode signal output setting" on page 73.
6
Connecting a humidistat, etc. (VNK type only)
AC220-240 V
Remove the short wires fixed on the terminal block TB4 with screws. (You need not use these wires.)
Connect a humidistat, etc. to the terminal block using the screws.
2 to 2.5 mm 2
220-240 V~, 50 Hz
220 V~, 60 Hz
Power supply
Contact
Terminal block for external output
24 VDC, 1 A
5 VDC, 100 mA
Contact rating:
1A or more
Humidistat, etc.
(Closed when humidification is allowed.)
2 to 2.5 mm 2
138-EN