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Application Information
Others
The controller board of 4 pipes system (W3) comes with other dry contact options.
L
COMP
TRANSFORMER
UNOCP A_FRZ W_OPEN TFULL SHED
Unoccupied Mode
Anti Freeze Mode
Window Open 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.
ii) Anti Freeze Mode
Anti Freeze operation has the highest priority among all unit operation. Anti Freeze operation will be
activated only if dry contact is closed and vice versa.
iii) Window Open Mode
If the dry contact is closed, Window Open Mode will be activated on the fan coil unit which is connected and
vice versa.
Note: The dry contact connection point can be connected with individual fan coil unit only. It cannot be connected
parallel with other fan coil units.
Cable Size
Model Unit FWE / FWF / FWK / FWW
Power supply cable size* mm2 1.5
Number of wire 3
Recommended fuse* A 2
Model Unit FWC03C FWC04C FWC06C FWC07C
Power supply cable size* mm2 1.5 1.5 1.5 1.5
Number of wire 3 3 3 3
Recommended fuse* A 1 1 1 2
Model Unit FWC09C FWC11/12/14/16C FWC02/03/04/05FD FWC06/08FD
Power supply cable size* mm2 1.5 1.5 1.5 1.5
Number of wire 3 3 5 5
Recommended fuse* A 3 5 1 2
Model Unit FWC10FD FWC-G FUD20/25B FUD30/40B
Power supply cable size* mm2 1.5 1.0 1.5 1.5
Number of wire 5 5 3 4
Recommended fuse* A 3 6 10 10
Important: * These values are for information only. They should be checked and selected to comply local
or national codes and regulations. They are also subjected to the type of installation and size of
conductor
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