CLIMATIC™ 50 User manual - Lennox
CLIMATIC™ 50 User manual - Lennox
CLIMATIC™ 50 User manual - Lennox
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BMS COMMUNICATION<br />
The communication bus is connected to Climatic Serial Card daughter board on the BM<strong>50</strong>.<br />
A star connection is not recommended, for an optimum operation it is advised to connect a maximum of two cables per unit.<br />
In case of RS485bus, a resistance of 120Ω 1/4W can be connected on the last unit between the terminals + and -.<br />
Connection must be carried out by the following cable:<br />
- Cable length up to 300m: AWG22 (0.34 mm ²), 2 pairs crossed with screen.<br />
- Cable length up to 1000m: LiYCY-P (0.34 mm ²), 2 pairs with general shield.<br />
The cable length should not exceed 1000m.<br />
For a better electromagnetic protection, <strong>Lennox</strong> recommends the use of LiYCY-P cable<br />
CLIMATIC<strong>50</strong> – IOM – Rooftops/ Aircoolair CL<strong>50</strong>-ROOFTOPS-IOM-1107-E 7
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