Internal electrical connection

AMotherboardD/l2Digital input 2
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)
11V111.1 V operating voltage
C
  1. Extract air
  2. Outdoor air
  3. Supply air
  4. Exhaust air
  5. Supply air from the HR cell
AN/IAnalog input 0–10 VDC
DLANRM/I24 V relay input
MB_AExternal Modbus A signalRM/O24 V relay output
MB_BExternal Modbus B signalTSupply air fan
+24V+24V voltage (DC)PExtract air fan
GNDDigital and analog ground potentialMDamper motor
RS_ALocal hardware Modbus A signalAHSPost-heating control
RS_BLocal hardware Modbus B signalCO2Internal carbon dioxide sensor
NTCExternal temperature sensor connector%RHInternal humidity sensor
D/l1Digital input 1R1Post-heating resistor with 90°C and 130°C overheating protection
Table 1. Cable colours
CodeColourCodeColour
BKBlackGYGrey
BUBlueYEYellow
BNBrownYEGNYellow-green
WTWhite