Daikin JEHCCU0180CL3 [7/216] Safety instructions

Daikin JEHCCU0170CM1 [7/216] Safety instructions
3.14.3 Controller EXD-HP1
The controller EXD-HP1 used in the Series 4 EVI unit operates as an
economizer control. The setting of controller is preset by the factory
and is password protected. Users are not allowed to change any
settings in the controller.
3.14.2 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
!
Safety Instructions:
1. Read installation instruction carefully. Failure to
comply can result in device failure, system
damage or personal injury.
2. Only person having appropriate knowledge and
skill are allowed to manipulate the controller.
3. Disconnect all voltages from system before
installation.
O-CU06-AUG17-3
All specifications are subjected to change by the manufacturer without prior notice. The English text is the original instruction.
Other languages are the translations of the original instructions.
7
3.14.3 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
3.14.4 Digital Input Di1/Di2
The digital input Di1 is the interface between controller
EXD-HP1 and system controller if Modbus communication has
not been used.
The digital status is dependent to operation of system’s
compressor or demand.
3.14.5 Manual mode operation
Warning: All alarms are disabled during manual control. We do not
recommend unattended operation of system during manual control.
Manual alarm reset clearing functional alarms
(except hardware error)
Variable data
Default Superheat, K
Suction pressure, bar
Valve position, %
Suction gas temperature, °C
Saturation temperature, °C
Discharge temperature, °C
Controller EXD-HP1
1 1
1 0
1 0
1 0
1 0
1 0
Operating Condition
Compressor starts
Compressor stops
Digital input status
Closed (Start)
Open (Stop)
ON: Data display
Circuit 1
ON: Data display
Circuit 2
ON: alarm
OFF: no alarm
ON: ModBus
communication
Next parameter/
value (higher)
Next parameter/
value (lower)
Selecting/
confirming
Parameters setting/saving
Blinking: valve is closing
ON: valve is fully close
Blinking: valve is opening
ON: valve is fully open
Press and together for 5 seconds to access to manual mode
operation.
List of parameters in scrolling sequence by pressing button
PRG
Code
Parameter description and choices
1Ho Manual mode operation; circuit 1 0
0
0
0
0
0
0
0
1
100
1
100
Manual mode operation; circuit 2
0 = disabled;
Valve opening (%)
Valve opening (%)
0 = disabled;
1 = Enabled
1 = Enabled
1HP
2Ho
2HP
Min Max
Factory
setting
Field
setting
Press and together for 5 seconds. When the clearing is done,
“CL” message appears for 2 seconds.
PRG SEL
ENGLISH

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