12
Application Information
System Model Function
2 Pipe
System
4 Pipe
System
M1 -
Model 1
M2 -
Model 2
M3 -
Model 3
M4 -
Model 4
Cooling or Heating
Cooling or Heating with Auxiliary Heater
Cooling Only with Boiler
Cooling or Heating with Boiler
FCU
FCU
FCU
FCU
FCU
FCU
FCU
FCU
Mini Chiller (Cooling Only)
Mini Chiller (Cooling Only)
Boiler
Boiler
Mini Chiller (Cooling / Heating)
Mini Chiller (Cooling / Heating)
C) Others
The controller board comes with other option.
L
COMP
TRANSFORMER
UNOCP A_FRZ W_OPEN TFULL SHED
Unoccupied Mode
Anti Freeze Mode
Window Open Mode
Connect to Level Switch
Load Shedding Mode
i) Unoccupied Mode
If the dry contact is closed, the Unoccupied mode is activated and vice versa. When Timer On is active,
system goes back to Occupied mode.
The dry contact connection points can be connected parallel with other fan coil unit (FCU) boards. If the
dry contact is closed, Unoccupied mode will be activated on all fan coil units that are connected parallel as
shown in fi gure below.