40Fläkt Woods 8666 GB 2010.06
Specifications are subject to alteration without notice
Installation and maintenance instructions
Control equipment
Function Terminal block Connection Comment
Cooling Cooling actuator Y – M Control signal to the valve actuator 0-10 V
G – G0 Power supply: 24 VAC*
Cooling NO – C Operation of the circ. pump/DX cooling step 1 (Potential free)
Start L - N Power supply: 230VAC, max. 2 A
Start DX-2 NO - C DX cooling step 2 (Potential free max. 2 A)
Alarm CP2/DX Alarm from circulation pump or DX cooling NO (changeable)
3-phase pump (Pump group) L1-L2-L3 Power supply for 3-phase pump from contactor.
Heating Heating actuator Y – M Control signal to the valve actuator and electric heater. 0-10V
G – G0 Power supply: 24 VAC*
Heating NO – C Operation of the circ. pump/electric heater. (Potential free)
L – N Power supply: 230VAC, max 2 A
Alarm CP1/GT7 Alarm from the circ. pump or thermal overload protection in
the electric heater. NC (changeable)
3-phase pump (Pump group) L1-L2-L3 Power supply for 3-phase pump from contactor.
Heat exchanger Control HEX Y-M Control signal to heat exchanger 0-10 V
G-G0 Power supply 24 VAC*
Alarm HEX Alarm from heat exchanger
START VVX NC - NO - C Operation of heat exchanger circ. pump
Frost prot. sensor GT5 Type PT1000
Supply air sensor GT1 Type PT1000. To be mount.at least 1500 mm from poss. duct air heater
Room sensor GT2 Type PT1000
Extract air sensor GT12 Type PT1000
Z input Z Y – M Factory fitted option GT10:/GT11 (Type PT1000),
Setpoint offset (0 - 10 V or Ohm), heat exchanger pressure
monitor (NO)
G – G0 Power supply: 24 VAC*
Outdoor air sensor GT3 Factory fitted option or facade sensor type PT1000
Supply air
GP5 Y – M Measurement signal: 0-10V
pressure sensor G – G0 Power supply: 24 VAC*
Pressure sensor Y – M Measurement signal: 0-10V 0-10V
extract air, CO
2
sensor
G – G0 Power supply: 24 VAC*
Fire alarm Fire Supplied as NC, but this can be changed on the display.
External stop Stop For example, fire damper exercising. NC (changeable)
Timer SU1 Low speed NO
SU2 High speed NO
AUX input Aux1 Filter alarm. NO. Common supply air and extract air
Aux2 Flow alarm. NO. Flow monitors NC.
Alarm output A-alarm NO – C – NC Potential free, max. 2 A
B-alarm NO – C – NC Potential free, max. 2 A
Bus Modbus RTU Ref + – Connection, Bus communication for Modbus RTU
Extension I/O +, – Connecting external IO expansion module
KNX KNX+, KNX– Connection to processbus (Zone control and extra fans)
Damper actuators ST3 Y – M Mixing damper control signal
MIX, DMP G – GO
Power supply 24VAC ~ – OV External component power supply 24 VAC
24VDC +, – External component power supply 24 VDC
Lighting control Light Control L – N – PE Input for external lighting control (not power supply)
Preheater Extension I/O +, – Connecting bus communication to preheater
Connecting external components in the control panel
* NOTE! Separate wires should be routed for these to avoid potential difference between the supply neutral and
the measurement/control neutral.
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