The TAC 2232 offers combined heating and domestic hot water control for hot water heating systems. The controller is intended for three stage district heating. The radiator circuit is controlled according to an outdoor temperature-compensated reset curve and reference sensor. The domestic hot water is controlled by using a separate constant temperature controller.
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
