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Installation

14 VAV-SVN09B-EN

Device Inputs/Outputs

Below is a list of device inputs and outputs.

• Twisted/shielded communication link

• Zone sensor

• Occupancy sensor (optional)

• Discharge AirTemperature (DAT)

•CO

sensor

• 24 Vac, Class II power

Table 6 provides details for each type input/output.

Electrical Connections

Wired sensor and for the wireless sensor BAS-SVX04*-EN

Zone Sensor Wiring: Location and Mounting

A zone sensor in each control zone should be located in the

most critical area of the zone. Sensors should not be

mounted in direct sunlight or in the area’s supply air

stream. Subdivision of the zone may be necessary for

adequate control and comfort.

Avoid mounting zone sensors in areas subject to the

following:

• Drafts or “dead spots” behind doors or corners.

• Hot or cold air ducts.

• Radiant heat from the sun or appliances.

• Concealed pipes or chimneys.

• Unheated or uncooled surfaces behind the sensor such

as outside walls.

• Air flows from adjacent zones or other units.

Power Wiring and Requirements

Use at least 16 AWG for power wiring and connect to

terminalTB1-1 (+) andTB1-2 (-). 24 VAC is required to

power the UCM control and has an acceptable voltage

tolerance of 20 to 28 VAC on UCM 4.2 and 18 to 32 VAC on

VV550. Replace the UCM control box cover after field

wiring to prevent any electromagnetic interference.

Note: A dedicated 24 VAC, 50VA NEC class 2 transformer

is recommended to power the UCM. When

powering multiple UCMs from one transformer,

polarity must be maintained.TerminalTB1-1 is

designated positive (+) and terminalTB1-2 is

negative (-) to the unit casing ground. All wiring

must comply with the National Electric Code (NEC)

and local codes. Maximum wire lengths should be

based on NEC specifications.

Environmental

rating (enclosure):

NEMA 1

Installation: UL 840: Category 3

Pollution: UL 840: Degree 2

Agency Listing/Compliance

• UL916 PAZX, Open Energy Management Equipment

• UL94-5V, Flammability

• CE Marked

• FCC Part 15, Subpart B, Class B Limit

• AS/NZS CISPR 22:2006

• VCCI V-3/2008.04

• ICES-003, Issue 4:2004

• Communications BACnet MS/TP, supports BACnet protocol ASHRAE

135-2004 and meets BACnet Testing Laboratory (BTL) as an

Application Specific Controller (ASC) profile device.

• Suitable for Plenum mounting

Table 6. UC210 inputs and outputs

Analog Input 1 through 3

Universal Inputs

UI1 and UI2

Note: Configuration options when used as

spare; 10 kΩ termistor, 0 to 1 kΩ

linear setpoint, 200Ω to 20kΩ

linear.

Note: Configuration options

when used as spare;

resistor/thermistor inputs,

10 Vdc inputs, or 4-20 mA

inputs. current mode

impedance is 200Ω

• 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 from 50 to 90°F (10 to 32.2°C),

*/** (thumbwheel) functionality

supported

• AI3: Discharge air temperature:

10kΩ @77°F (25°C) from -40°F to

212°F (-40 to 100°C)

• UI1: Relative Humidity

• UI2: CO

Pressure Input P1

Binary Input BI1,

Dry Contact

• P1: Supply air flow; pressure

transducer: From 0 to 2 in. water

column (0 to 498 Pa)

• BI1: Occupancy

Analog Outputs

AO1 and AO2

Binary Outputs 1 through

Note: Configuration options when used a

spare; Voltage output is 0-10 Vdc,

500Ω min. impedance. Current

outpout is 4-20 mA, 500Ω max,

impedance.

Note: 0.5A Resistive Maximum

Rating

Table 5. UC400 specifications (continued)

• AO1: ECM

• AO2: SCR Heat

• BO1: Heat stage 3 TRIAC

• BO2: Heat stage 2/Water

Valve Close TRIAC

• BO3: Heat stage 1/Water

Valve Open TRIAC

• BO4: Air Damper Close

TRIAC

• BO5: Damper Open TRIAC

WARNING

Hazardous Voltage!

Disconnect all electric power, including remote

disconnects before servicing. Follow proper lockout/

tagout procedures to ensure the power can not be

inadvertently energized. Failure to disconnect power

before servicing could result in death or serious injury.

Table 6. UC210 inputs and outputs (continued)

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 55 56

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