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4. Electrical work
4.1.6. Wiring specification External output / External input
Locally supplied parts
Item
Name
External output function External output signal wire Use sheathed vinyl coated cord or cable.
Display lamp, etc.
External input function
External input signal wire Use sheathed vinyl coated cord or cable.
Switch
4.1.7. Switch setting
It is possible to set the following function by setting the switch of the interface controller.
• SW2-1/2-2 : Fixed operation mode
SW2-1
SW2-2
Details
OFF
OFF
Not FIX (Depending on Remote controller setting)
ON
OFF
[Cooling] FIX
OFF
ON
[Heating] FIX
ON
ON
External input (Depending on TB62 3-4)
• SW2-3/2-4/2-5 : Fixed set temperature [For Auto step mode only]
SW2-3
SW2-4
SW2-5
OFF
OFF
OFF
ON
OFF
OFF
OFF
ON
OFF
ON
ON
OFF
OFF
OFF
ON
ON
OFF
ON
OFF
ON
ON
ON
ON
ON
Set switches in case of auto step mode.
• SW3-4/3-5 : Thermo OFF point by HEX inlet air temp.
(difference between target temp. and HEX inlet temp.)
[For Auto step mode and supply air temp. control]
Compressor is forced to stop when HEX inlet temp. is close to target temp. to reduce frequent ON/OFF cycling under low heating/cooling load condition.
SW3-4
SW3-5
Differential
OFF
OFF
1°C
OFF
ON
2°C
*1
ON
OFF
3°C
ON
ON
4°C
*1. Standard setting : 3°C
• Other DIP switch setting
DIP switch Function
SW1-4
HEX inlet temp. thermistor (TH11)
SW1-5
2-phase temp. thermistor (TH5)
SW1-6
Time stamp function on SD card data
SW1-7
Position of target temp. thermistor (TH1)
SW1-8
Intelligent multiple outdoor units control
*2
SW2-6
LEV self control
SW2-7
Ref. liquid temp. thermistor (TH2)
SW2-8
Target temp. thermistor (TH1)
*1. This function is valid only with remote controller.
*2. This SW must be set to "OFF".
4.1.8. Before test run
After completing installation and the wiring and piping of the local application and outdoor units, check for refrigerant leakage, looseness in the power supply or control
wiring, wrong polarity, and no disconnection of one phase in the supply.
Use a 500-volt megohmmeter to check that the resistance between the power supply terminals and ground is at least 1.0MΩ.
Warning:
Do not use the system if the insulation resistance is less than 1.0MΩ.
Caution:
Do not carry out this test on the control wiring (low voltage circuit) terminals.
10
Model and specifications
Wire type : CV, CVS or equivalent.
Wire size : Stranded wire 0.5mm
Solid wire: {0.65mm to {1.2mm
Non-voltage Contact 220-240V AC (30V DC), 1A or less
10 mA, 5 V DC or more
Wire type : CV, CVS or equivalent.
Wire size : Stranded wire 0.5mm
Solid wire : {0.65mm to {1.2mm
Non-voltage "a" contact
Details
Not fixed (Remote controller setting)
Cooling 19°C/Heating 17°C FIX
20°C FIX
22°C FIX
24°C FIX
26°C FIX
28°C FIX
Cooling 30°C/Heating 28°C FIX
OFF
*2
WITH
WITH
N/A
Supply Air temp. control
Inactive
OFF
*2
WITH
WITH
2
2
to 1.25mm
2
to 1.25mm
2
ON
WITHOUT
WITHOUT
*1
Available
Return Air temp. control
Active
ON
WITHOUT
WITHOUT
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