PI – 03/04 Modulating Digital Thermostat
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Temperature offset
The temperature offset can be set in a range of – 2 to + 2 ºC.
Display mode
The Display can be programmed to display room temperature, setting temperature or % of valve/damper
opening.
Temperature display in decimal number
In case of selecting program 8.0 and 9.1, Press △and ▽key simultaneously to toggle showing room
temperature in integer or decimal number. To exit this program, cut off the power.
Remote sensor (optional)
The Remote sensor can be provided as the optional. It can be the temperature module, epoxy or pipe type.
The system will automatically detect whether the internal or the Remote sensor is used.
Temperature module
Fig.3 Remote sensor
Specify the type of Remote sensor when order.
Digital input for energy savings
There is a Digital input port for energy savings provided in the system. If the input is NO contact, the system
will not do anything. If the input is NC contact, it will delay for 2 minutes and then
raise up the setting temperature for 2 ºC, and
activate the dot LED after the second digit as an alarm.
Sensor error alarm
If the temperature sensor (either internal or remote) is failed, Display will show Er in blinking.
Target error alarm
If the target of the valve/damper opening can not be reached within 2 minutes (for Feed back type only),
Display will show Ef in blinking.
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