A LX = Lennox
B 6 = 600x600 - 9 = 900x900
C 2 = 2 pipes - 3 = 2 pipes + electrical heater - 4 = 4 pipes
D 1 = Size
E Modbus card (suitable for infrared remote control) - NC = Not included - RC = Included
F EC fan motor
Eurovent Certified performance
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