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Safety Instructions:
1. Read installation instruction carefully. Failure to comply can result in device failure, system damage
or personal injury.
2. Only person having
3. Disconnect all voltages from system before installation.
Electrical Installation
•
Do not operate system before all cable connections are completed.
•
Refer to wiring diagram for electrical connections.
•
Class II category transformer is required for 24VAC power supply
•
Do not connect any EXD-HP1 input to main voltage as it will permanently damage the controller.
•
When connecting wires of expansion valve and pressure sensor, consider color coding as follow:
1.
EXM : BR: BROWN; BL: BLUE, OR: ORANGE; YE: YELLOW; WH: WHITE
2.
PT5 : BN: BROWN; WH: WHITE
Display/ keypad unit (LEDs and button functions)
• In standard mode the superheat is shown at the display. In case of liquid injection and economizer function this
changes to discharge temperature.
• To display other data of EXD-HP1 press "SEL" button for 1 second until index number according to below table
appears. Release "SEL" button and the next variable data will appears. By repeating the procedure variable data
can be displayed in sequence as measured superheat (K) → Measured suction pressure (bar) → valve position
(%) → Measured suction gas temperature (°C) → Calculated saturated temperature (°C) → Measured discharge
temperature (°C) (if economizer function is selected) → REPEATING
Variable data
Default Superheat, K
Suction pressure, bar
Valve position, %
Suction gas temperature,
°C
Saturation temperature, °C
Discharge temperature, °C
T-CU01-MAR21-3
knowledge and skill are allowed to manipulate the controller.
appropriate
Controller EXD-
HP1
1
0
1
1
1
2
1
3
1
4
1
5
30
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