Daitsu FDLA-09, Installation, Operation & Service Manual

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Control Specifications for full PCB control: SK ‐ NCPDWH ‐ 001b ~S D.
Configuration:
Full Control PCB
Abbreviations
Ts = Setting temperature
Tr = Room air temperature
Ti1 = Chilled water coil temperature
Ti2 = Hot water coil temperature
AUX1 = Hot water free contact
AUX2 = Chilled water free contact
MTV1 = Chilled water valve
MTV2 = Hot water valve
I/O Port Definitions D.1.
I/O Code 2 ‐ Pipe 4 ‐ Pipe
Analogue
Input
Room Sensor AI1 Return air temperature (Tr)
Chilled water Sensor AI2
Chilled / hot water coil
circuit (Ti1)
Chilled water coil circuit
(Ti1)
Hot water Sensor AI3 N/A Hot water coil circuit (Ti2)
Input
IR receiver X ‐ DIS 1
Digital communication port to LED display/ IR receiver
board.
Wired wall pad TTL1 Digital communication port to wired wall ‐ pad board.
Digital input
Occupancy contact PR1/PR2
This contact may be connected to occupancy sensor or
BMS system.
DIP ‐ SWITCH IS ON. (Window contact)
The contact is normally open. If the contact has been
closed for 10 minutes, the unit will shut down. When
the contact is open again, the unit restarts.
DIP ‐ SWITCH IS OFF. (Economy contact)
Cooling operation will only be activated when Tr ‐ Ts ≥
4ºC. If Tr<Ts, cool operation will be terminated.
Heating operation will only be activated when Tr ‐ Ts ≤
‐ 4ºC. If Tr>Ts, heating operation will be terminated.
Float switch Float Voltage ‐ free (NC)
Electrical heater safety
switch
EH
Voltage ‐ free (NC). The contact is closed before the EH is
turned on.
Power input
Phase L
Power supply to the PCB and all the loads connected to
the voltage outputs. Max length: 5m.
Neutral N
Power supply to the PCB and all the loads connected to
the voltage outputs. Max length: 5m.
Earth GND
Power supply to the PCB and all the loads connected to
the voltage outputs. Max length: 5m.