Ferrites Protection Of Display; Dm50 And Master/Slave Communication - Lennox BAC020SNM Installation, Operating And Maintenance

CLIMATIC 50 – ROOFTOP – VERSION 23

Ferrites Protection of Display

To avoid the appearance of disturbances HF, which can cause the destruction of components in the displays, you must
equip the cable with a ferrite when installing it (provided by Lennox).

DM50 and Master/Slave Communication

The intercard bus (pLan) is connected to Climatic™ on the J11 connector of board BM50.
A star connection is not recommended, for an optimum operation it is advised to connect a maximum of two cables per unit.
Connection must be carried out by the following cable:

Cable length up to 300m: AWG22 (0.34 mm ²), 2 pairs crossed with screen.

Cable length up to 500m: LiYCY-P (0.34 mm ²), 2 pairs with general shield.
The cable length should not exceed 500m.
For a better electromagnetic protection, Lennox recommends the use of LiYCY-P cable
BALTIC R410A-IOM-0708-E Page 96