ROTOTERM MR-TR
7
www.first.si
TABLE OF SENSOR RESISTANCE
In order to test the automatics we can
simulate the sensors with resistance.
Values are selected from the table bellow.
Simulation example of AF sensor:
- for 0°C terminal pins 1 and 2 are
connected to resistance 1645W
(to the nearest 1500
W
+ 150
W
)
ELECTRICAL CONNECTION
Connection between the room unit and the controller is of low voltage type (two-wire 2 x 0.5 mm
2
). When longer
wires are required or where stronger interference is to be expected, we recommend use of shielded cable.
DO NOT CONNECT ROOM UNIT AS 2000-E TO POWER SUPPLY
NETWORK OR ANY OTHER VOLTAGE SOURCE!
Room unit is supplied with its own power supply source (battery cells 2x 1.5V LR06), which need to be replaced
every two years!
Sensor cables shall not be placed parallel to live power supply cables, as in case of electric shock there is danger of induced
current which can damage the controller or room unit. In case that power supply cable and sensor cable are parallel, the minimum
distance between them shall be 10 cm. It is allowed however the sensor cable to trans versely cross the supply cable.
Sensor resistance table with dependence on temperature - type KTY10-6
EXAMPLES OF MAIN CONNECTIONS
Recommendation:
For under floor heating we recommend in stallation of an extra
safety bimetal thermostat on the mixed flow line. The ther mo stat
shall be set to some 50°C and shall switch off the cir cu lation pump
after the tem pera ture in the heating wa ter line ex ceeds 50°C.
The use of ther mo stat is rec ommended as precaution in order to
prevent hot wa ter to breaking into under floor heating system.
Under floor heating
bimetal
thermostat
Radiator heating
