Internal electrical connection

AMotherboard 11V111.1 V operating voltage
B
  1. Extract air fan tacho (WT)
  2. GND (GN)
  3. Extract air fan PWM (YE)
  4. Supply air fan tacho (WT)
  5. GND (GN)
  6. Supply air fan PWM (YE)
 AN/IAnalog input 0–10 VDC
C
  1. Extract air
  2. Outdoor air
  3. Supply Air
  4. Exhaust air
  5. Supply air from the HR cell
 RM/I24 V relay input
DLAN RM/O24 V relay output
MB_AExternal Modbus A signal TSupply air fan
MB_BExternal Modbus B signal PExtract air fan
+24V+24V voltage (DC) FChoke
GNDDigital and analog ground potential MDamper motor
RS_ALocal hardware Modbus A signal AHSAir flow measuring sensor for extract air fan
RS_BLocal hardware Modbus B signal %RHAir flow measuring sensor for supply air fan
NTCExternal temperature sensor connector%RH CO2Internal humidity and carbon dioxide sensor
D/l1Digital input 1 R1Post-heating resistor with 90°C and 130°C overheating protection
D/l2Digital input 2 R2Additional heating resistor with 90°C and 130°C overheating protection
Table 1. Cable colours
CodeColourCodeColour
BKBlackGNGreen
BUBlueRDRed
BNBrownYEYellow
WTWhiteYEGNYellow-green