8.2
Operate Thermostat T-55
During normal operation the thermostat LED fl ashes once only
with each radio transmission. The illustration below shows the
parts of the thermostat.
The table below describes the numbered items in the
illustration.
Item
Description
1
Room temperature set point dial control
2
Registration button
3
Batteries
4
Radio transmission LED
5
Blue cam to set minimum temperature
6
Red cam to set maximum temperature
Adjust temperature
Use the control dial of the thermostat to adjust the
temperature. The illustration below shows how to adjust the
thermostat temperature set point.
To adjust the thermostat temperature:
• Rotate the dial clockwise for a higher temperature
• Rotate the dial anti-clockwise for a lower temperature
Set minimum/maximum temperatures
The illustration below shows how to set minimum and maximum
temperatures in the thermostat. If the system is equipped with
Uponor Interface I-75/76, all minimum/maximum settings
can be handled from there, and the procedures below are not
necessary.
To set minimum and maximum temperatures:
1 Remove the dial with a screwdriver.
2 Set the desired minimum temperature of the room with the
blue cam.
3 Set the maximum temperature with the red cam.
Replace batteries
The thermostats are powered by batteries. Replace the batteries
of the thermostat when the red LED inside the thermostat
fl ashes twice during a heating or cooling demand. The
illustration below shows how to open the thermostat.
1
3
2
1
3 3
U P O N O R C O N T R O L S Y S T E M – I N S TA L L AT I O N A N D O P E R AT I O N M A N U A L
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