ABB SLTA Option Card Serial LonTalk Datasheet download pdf (Page 100)

TAC 2222

The TAC 2222 offers combined heating and domestic hot water control for

hot water heating systems. 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.

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.Areferencesensorisusedtoadjusttheresetcurveandtheduration

andthenightsetbackautomatically.Adjustmentsresultingfromseasonal

variations are automatic.

FUNCTIONAL FEATURES

• Automaticadjustmentofthe

reset curve

• Ramp limitation of supply

setpoint

• Control of room temperature

via a reference sensor

• Weekly program for night

setback

• Separate weekly program

for domestic hot water and

external unit

• Holiday program for heating

and domestic hot water

• Variable night setback and

morning heating

• Optimized changeover from

daytime operation to night

setback

• Separate limitation of return

temperature of heating and

domestic hot water

• Pump control with exercise

function

• Heat control using an external

unit (SPC control)

• Extended daytime operation

and forced night setback from

an external unit

• Domestic hot water control

• 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 (77ºF ) . . . . . . . . . . . +12 minutes/year

Backup memory . . . . . . . . . . . . . . . . . . . 48 hours

Enclosure rating. . . . . . . . . . . . . . . . . . . . IP 40, front IP 54

Thermistor Inputs

Type of thermistor. . . . . . . . . . . . . . . . . . 1800 ohm/25 °C (+77ºF )

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, thermistor input (see above)

Heatadjustment(SPC) . . . . . . . . . . . . . . 0–10 V DC

Domestic hot water valve . . . . . . . . . . . . 0-10 V DC or 2–10 V DC

Additional connection to outdoor temp . 0–10 V DC

DESCRIPTION

200-2051-000 TAC 2222 Swedish Controller

200-2052-000 TAC 2222 GB Controller

200-2053-000 TAC 2222 Danish Controller

200-2054-000 TAC 2222 Swedish/Finnish Controller

Heating Controllers

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ABB SLTA Option Card Serial LonTalk Datasheet Page 100

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