Internal electrical connection

AMotherboardAN/IAnalog input 0–10 VDC
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)
RM/I24 V relay input
C
  1. Extract air
  2. Outdoor air
  3. Supply air
  4. Exhaust air
  5. Supply air from the HR cell
RM/O24 V relay output
DLANTSupply air fan
MB_AExternal Modbus A signalPExtract air fan
MB_BExternal Modbus B signalMDamper motor
+24V+24V voltage (DC)TKSafety switch
GNDDigital and analog ground potentialAHSPost-heating control
RS_ALocal hardware Modbus A signal%RHInternal humidity sensor
RS_BLocal hardware Modbus B signal%RH CO2Internal humidity and carbon dioxide sensor
NTCExternal temperature sensor connectorR1Post-heating resistor with 90°C and 130°C overheating protection
D/l1Digital input 1R2Additional heating resistor with 90°C and 130°C overheating protection
D/l2Digital input 2KHarmonic filter
11V111.1 V operating voltage
Table 1. Cable colours
CodeColourCodeColour
BKBlackGYGrey
BUBlueYEYellow
BNBrownYEGNYellow-green
WTWhite