16
THERMOSTATIC FREECOOLING (AS AN OPTION)
This option approaches external conditions for cooling mode.
The freecooling is enabled when outdoor temperature is below indoor temperature. For these conditions air intake
gate is opened.
Two thermostats on the air discharge are incorporated for the safety of the unit:
- One of them for 4ºC, closes the gate in order to prevent freezing.
- The other one for 10ºC, opens the gate to take advantage from outside air.
These thermostats only work when the freecooling is enabled.
If it does not work properly, please check the jumper according to the electrical wiring diagram.
Programming option is included on it. You can connect as an option remote sensors.
To use this option an outdoor probe is connected.
22C
T-
T+
24v
B2
OT
PCB
GND
B3
ID3
IDCO
ID2
ID1
GND
90 91
T+
T-
GO
G
30
31
mode
hold
resume
fan
set
clock
RC
AUTO
B1
AVs
21C
