DC-DM-ROOFTOP-IOM-1801-E - 25 -
3.2 Ferrites Protection of Displays
To prevent radio interference that may cause miscommunication or destruction of elements on the screen, you need
to equip each end of the cable a ferrite (supplied by Lennox).
3.3 Temperature Sensor
All Lennox Unit comes with a temperature sensor; it must be placed in the conditioned area.
But if the 'DC' is placed in the area conditioned by the Unit, it is possible, in this case, to use the temperature
measurement of the 'DC'.
To indicate the CLIMATIC your choice, set the point 3213:
- ‘128' to use the measure of the 'DC'
- ‘1 BM-B12' or '2 BM-B1' to use the remote probe
Note:
- - For Unit with a 'medium' CLIMATIC :
Connect the remote sensor between points B12 and GND, terminal block J18.
- - For Unit with a 'small' CLIMATIC:
By default the CLIMATIC control the temperature measurement of return. If you want to control on a
measure of room temperature, disconnect the return probe between points B1 and GND, terminal block J13.
Connect the remote sensor in place.
3.4 Configuration
For communicate with the CLIMATIC this basic parameters of internal ‘DC’ must to be settled.
3.4.1
Setup Menu
(2 buttons on the right simultaneously)
To do this, when the 'DC is powered; simultaneously press the keys and .
After some seconds the text appears and the value '000' flashes
Turn the knob to change the value to select the number 022. Then validate the code by pressing the knob.
If the code is wrong access the setup menu is not possible and the 'DC' returns to the previous display.
If the code is correct the display shows
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