LEGRAND 674 56, User Manual

Page: 16 / 40

16
2 - Operation
■
■
The■local■probe
Each■zone■of■your■system■has■a■probe■which■can■adjust■the■temperature■
locally,■modifying■the■setting■on■the■Control■Unit.
In■particular■you■can■vary■the■temperature■by■±■3■°C,■select■antifree-
ze/heat■protection■or■switch■the■system■off■in■the■individual■zone.
Knob
• Can■set■the■temperature■manually■from■+3■to■-3■degrees■with■respect■
to■the■Control■Unit■setting.
• ■

■Sets■the■Antifreeze/Heat■protection■mode■for■the■zone.
If■the■temperature■control■system■is■working■as■heating,■turning■
the■knob■to■this■position■sets■the■Antifreeze■mode;■if■the■system■is■
working■as■cooling■it■sets■the■Heat■protection■mode.
To■return■to■normal■operation■turn■the■knob■to■one■of■the■positions■
from■+3■to■-3.
• OFF■Turning■the■knob■to■this■position■turns■the■zone■OFF.■To■return■to■
normal■operation■turn■the■knob■to■one■of■the■positions■from■+3■to■-3.
Green LED
• When■it■is■shining■steadily■it■indicates■that■the■system■is■active.
• When■it■is■flashing■it■indicates■that■the■zone■is■in■

■or■OFF■mode.
Yellow LED
• When■it■is■shining■steadily■it■indicates■that■the■system■is■working■in■
the■zone.
• When■it■is■OFF■it■indicates■that■the■system■is■not■working■in■the■zone.
• When■it■is■flashing■it■signals■a■fault.
KEY (Fan-Coil probe)
• When■it■commands■the■Fan-Coil■it■can■select■the■speed
(MIN■-■MED■-■MAX■-■AUTO)
+2
+1
-1
-2
-3
OFF
A
+3
Fan-coil probe
Green■LED
Speed■signal■
LED
Yellow■LED
Knob
Key
+3 +2
+1
-1
-2 -3
OFF
Knob
Green■LED Yellow■LED