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Room temperature controller 24Vac, modulating, on/off, T8078C

Room temperature controller 24Vac, modulating, on/off, T8078C

Digital controller for individual zone control of terminal units in fan coil and air conditioning systems, with great applications flexibility. The...

Product Description

Digital controller for individual zone control of terminal units in fan coil and air conditioning systems, with great applications flexibility. The controller provides position control of valves or dampers (for airside control), and is capable of mounting on a switching sub-base for manual control of the fan speed.
The controller can be configured (with dipswitches) for the following applications:
  • Heat / Cool changeover
  • Cooling only
  • Cooling + optional 2 stages On/Off Heating
  • Heating only
  • Heating + optional 2 stages On/Off Cooling
  • Heating + Cooling Sequence Control

Technical Properties

Protection class IP30
Temperature element NTC100k
Control functions dipswitch settings for:
  • PI Modulating (3-position)
  • PI On/Off
  • thermal actuator control using TPM (=Thermal Predictive Modulating)
  • proportional band
  • zero energy band
Optional inputs remote sensor, remote setpoint adjustment, heat/cool changeover, energy savings contact
Temp. setpoint range 15 ... 30 oC
Control output signal 2 triacs for 1 valve open/close; 2 triacs for 2nd valve open/close or 2 on/off stages; max. load 8 VA /triac (24 V)
Power supply 24 Vac | 1.2 VA
Housing (HxWxD) 83 mm | 83 mm | 40 mm
Additional Descriptions
  • easy system check with LED and PC-output port
  • easy commissioning with automatic valve pulsing
  • periodic valve excercise and synchronisation
  • remote sensor auto-detect

Produse

Product Type
Products

T8078C1009

Accessories and replacement parts

Accessories

Image Description Product Type Downloads
Range stops, to limit setpoint adjustment (20 pieces) F42006646 001  
Remote setpoint module (-5..+5 K) Q979B1029  
Remote sensor and setpoint module (-5..+5 K) Q979C1036  
Wall mounted space temperature sensor Q979A1020  
Remote sensor for duct or terminal unit mounting (1.5m cable) T8109C1002  
External pipe thermostat for automatic heat/cool changeover S4390A1004  
Fan speed switching subbase (230 V) Q6360A1025