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Installation

VAV-SVN09B-EN 13

Analog Inputs

• AI1

• Space temperature; thermistor: 10k  @77°F (25°C)

• Range: 32°F to 122°F (0°C to 50°C)

• AI2

• Space setpoint; potentiometer: 1k 

• Range: from 50°F to 90°F (10°C to 32.2°C), */**

(thumbwheel) functionality supported

• AI3

• Spare

• AI4

• Discharge air temperature: 10k  @77°F (25°C)

• Range: from -40°F to 212°F (-40°C to 100°C)

• AI5

• Supply air temperature: 10k  @77°F (25°C)

• Range: from -40°F to 212°F (-40°C to 100°C)

Universal Inputs

• UI1;

• Spare, but recommended for relative humidity

• Resistive/thermistor inputs: 0-10 Vdc inputs or 4-20

mA inputs

• Current Mode Impedance: 200 , Voltage Mode

Impedance: 10k  minimum

• UI2;

• Provided point for CO

• Resistive/thermistor inputs: 0-10 Vdc inputs or 4-20

mA inputs

• Current Mode Impedance: 200 , Voltage Mode

Impedance: 10k  minimum

Pressure Inputs

•P1

• Supply airflow, pressure transducer

• From 0 to 2 in. water column (0 to 498 Pa)

•P2

• Spare (recommended for dual duct secondary

airflow)

Binary Inputs

• BI1

• Occupancy

• BI2

• Spare

• BI3

• Spare

Binary Outputs

Analog Outputs

•AO1

• Spare output.

• Voltage output is 0 to 10 Vdc, 500  minimum

impedance.

• Current output is 4-20 mA, 500  max. impedance.

• Also can output 100 Hz PWM signal for control of a

Trane fan-powered ECM fan setpoint signal to the

EC motor.

•AO2

• Spare.

• Voltage output is 0 to 10 Vdc, 500  minimum

impedance.

• Current output is 4-20 mA, 500  maximum

impedance.

• Also used onTrane VAV units for SCR electric heat

0-to-10 Vdc modulation control.

Note: For more information on wiring spare points, refer

to theTracer UC400 Programmable Controller

Installation, Operation, and Maintenance Manual

(BAS-SVX20).

UC210

Binary

Outputs

Type

Output

Rating

Pilot duty

BO1 Fan 10A up to 277 Vac

10A at 30 Vac/VDC, 2A at

120 Vac, 8 A at 250 Vac

BO2 Spare Relay 10A up to 277 Vac

10A at 30 Vac/VDC, 2A at

120 Vac, 8 A at 250 Vac

BO3 Spare Relay 10A up to 277 Vac

10A at 30 Vac/VDC, 2A at

120 Vac, 8 A at 250 Vac

BO4 Fan ON/Off

24-27 Vac, 0.5A

Resistive VA

BO5 Heat stage 3 TRIAC

24-27 Vac, 0.5A

Resistive VA

BO6

Heat stage 2/Water

Valve Close TRIAC

24-27 Vac, 0.5A

Resistive VA

BO7

Heat stage 1/Water

Valve Open TRIAC

24-27 Vac, 0.5A

Resistive VA

BO8

Air Damper Close

TRIAC

24-27 Vac, 0.5A

Resistive VA

BO9

Air Damper Open

TRIAC

24-27 Vac, 0.5A

Resistive VA

Table 5. UC400 specifications

Storage

Temperature: -40 to 185°F (-40 to 85°C)

Humidity: 5% to 95% (non-condensing)

Operating

Temperature: -40 to 185°F (-40 to 85°C)

Humidity: 5% to 95% (non-condensing)

Input Voltage:

20.4-27.6 Vac, (24 Vac± 15% nominal), 50-60

Hz, 10.5 VA plus 1 VA per 20mA of 24 VDC load

plus 12 VA maximum per binary load

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 55 56

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