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
CAT-VISTA-A4.indd 93 6/18/2009 1:51:25 PM