OPERATING PRINCIPLES
HT250S SET room thermostat specifications:
LCD with backlight
Two-position control (ON / OFF)
Temperature sensor (NTC)
The thermostat measures the room temperature with its temperature sensor. The desired temperature value is set
by turning the button to the right or left. When the room temperature rises above the set temperature value, the
room thermostat sends a shutdown command to the modem. Modem Turns off the relay by receiving the
command.
Digital display; The set temperature, battery life, room temperature and heating symbol are displayed. The heating
o
symbol gives information about the operation status of the boiler. The product measures 0.1 C temperature
o
accuracy. However, there is an operating sensitivity of 0.5 C to prevent the heating unit from starting and stopping
too frequently.
The device manages the heating systems by the on-off operation algorithm. This working algorithm is shown in
the following graph.
FUNCTIONS
Temperature Control
The room thermostat controls the room temperature according to the set value. The on / off temperature
o
difference of the device is 0.5 C.
Calibration
The room thermostat can be calibrated if the measuring temperature wanted to be changed. The calibration range
o
o
is -8 C to + 8 C.
ORDERING
When ordering, specify both the product type and the product code, for example the HT250S SET wireless room
thermostat.
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Time
Heating System
OFF
Heating System
On
Desired
Temperature
Room
Temperature
