Product Description
The TF428 RSBS/RSS series digital thermostat are designed for 3 speed fan and on/off valve control in a fancoil system, including:
- 2-pipe cool only/heat only/manual changeover
- 4-pipe manual/auto changeover(VC4013 valve only)
- Ventilation mode
- Manual or automatic 3-speed fan control
- On/off water valve control
Besides the basic controls, TF428 RSBS/RSS series featuring CPH (Cycle Per Hour) better maintains the room temperature to the setpoint and Random Start-up Function helps maintain power grid stability. In addition, the Memorized Time Off function can automatically turn off the thermostat to save energy.
Technical Properties
| Protection class |
IP20 |
| Switch function/capacity |
n.a |
| Temp. setpoint range |
10 ... 32 oC |
| Control output signal |
PI, on/off output |
| Additional Descriptions |
- Auto Cycle times 100,000 times
- Manual Cycle times 10,000 times
- Display range 0 ~ 37C
- Ambient storage limits -30 ~ +60C
- Humidity limits 5~90% RH, non-condensing
- Pollution Degree 2
- Protection against electric shock class Class II
- Rated Impulse Voltage: 2500V
- Maximum Temperature for relay wiring 155C
|
| Temperature control accuracy |
+/- 1 oC |
| Ambient temp. limit |
0~ +49C |
| Power supply |
220/230VAC, 50/60Hz |
