Datasheet

93
Heating Controllers
TAC 2112
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.
FUNCTIONAL FEATURES
• Automatic adjustment of the
reset curve
• Ramp limitation of supply
setpoint
• Control of room temperature
via reference sensor
• Weekly program for night
setback
• Separate weekly program for
external equipment
• Holiday program
• Variable night setback and
morning heating
• Optimized changeover from
daytime operation to night
setback
• Pump control with exercise
function
• External setpoint adjustment
(SPC control)
• Extended daytime operation
and forced night setback from
an external unit
• Alarm
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
DESCRIPTION
200-2201-000 TAC 2112 Swedish Controller
200-2202-000 TAC 2112 Danish Controller
200-2203-000 TAC 2112 Swedish/Finnish Controller
200-2204-000 TAC 2112 GB Controller