Roomtemperature controller 24Vac, modulating, on/off, T8078C
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| 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 |
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| 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) |
| 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 |
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| Temperature element |
NTC100k |
| Temp. setpoint range |
15 ... 30 oC |
| Optional inputs |
remote sensor, remote setpoint adjustment, heat/cool changeover, energy savings contact |
| Housing (HxWxD) |
83 mm | 83 mm | 40 mm |
| Protection class |
IP30 |
| Power supply |
24 Vac | 1.2 VA |
| Additional description |
| • |
easy system check with LED and PC-output port |
| • |
easy commissioning with automatic valve pulsing |
| • |
periodic valve excercise and synchronisation |
| • |
remote sensor auto-detect |
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| Description | Additional Product Type |
|---|
| Range stops, to limit setpoint adjustment (20 pieces) | F42006646-001 | | Wall-plate to allow mounting onto different wall boxes (5 pieces) | F42007789-001 | | 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 |
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