The TAC 2112 offers control of hot water heating systems. The radiator circuit is controlled according to an outdoor temperature-compensated reset curve and reference sensor.
Simple symbols, a clear LCD display and a minimum number of buttons make it easy to read and change the values. There are three adjustable curve points where you can adjust the reset curve exactly to suit different heating systems.Specifications
Power supply ...................... 24 V AC +20%, 50–60 Hz
Power consumption ........... 3W
Dimensions ......................... 144 x 96 x 96mm (5.7” x 3.8” x 3.8”)
Ambient Temperature
Storage .................................–20 °C to +50 °C (–4 °F to +122 °F)
Operation ..............................0 °C to +50 °C (32 °F to +122 °F)
Humidity ................................max. 90% RH non-condensing
Real Time Clock
Accuracy at +25°C (77º F) ........... ±12 minutes/year
Backup memory .............................. 48 hours
Thermistor Inputs
Type of thermistor ........................... 1800 ohm/ 25°C (+77º F )
Measurement range ........................ –50°C to +120°C (-58º F to + 248º F)
Relay Outputs
Max. voltage .................................... 250 V AC
Max. current ..................................... 2 A
Inputs
Sensor inputs B1-B4, U1, U4 thermistor input (see above)
Setpoint adjustment (SPC), U2 ...... 0–10 V DC
Additional connection to outdoor temp., Y2 0–10 V DC
Enclosure rating ............................. IP 40, front IP 54
