Viconics VT8300 Low Voltage Application Guide Bedienungsanleitung PDF herunterladen (Seite 57)

Fan Coil Unit Controller SeriesApplication Guide

028-0444-01 www.viconics.com | sales@viconics.com February 2015

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VT8300

BO2 - Fan L

BO3 - Fan M

BO4 - Fan H

RC (24 Vac)

C (Common)

BO8 - Aux Heat

UO11

- Analog Heat

UO12 - Analog Cool

BACnet +

BACnet -

BACnet REF

UI 16

UI 17

Common

UI 19

UI 20 - RS

Common

UI22 - SS

Floating Control Mix Voltage

SC1300

FAN HI

FAN MED

FAN LO

COMM ON

High Voltage Fan

Power supply

120 Vac

COOLING VALVE

Open Close Com.

HEATING VALVE

Open Close Com.

Sequence of Operation and Wiring

Occupied Mode

Setpoints revert to those deﬁned by occupied cooling and heating.

Stand-by Mode (only available when PIR motion detector

sensor is used)

Setpoints revert to those deﬁned by stand-by cooling and heating.

Unoccupied Mode

Setpoints revert to those deﬁned by unoccupied heating and

cooling.

Occupied Override Mode

System reverts to occupied mode for duration determined by

“ToccTime” parameter.

On Call for Cool

Cooling valve opens to maintain room temperature. Heating valve

closes.

On Call for Heat

Heating valve opens to maintain room temperature. Cooling valve

closes.

On Demand for Dehumidiﬁcation

Dehumidiﬁcation is achieved via cooling coil using heating coil for

reheat if necessary.

Dehumidiﬁcation is only allowed in COOL mode, or if cooling is

enabled in AUTO mode.

Dehumidiﬁcation is disabled if room temperature falls below low

ambient lockout temperature, which is the cooling setpoint minus

the conﬁguration deﬁned deadband value.

Reheat disabled if cooling demand reaches 100%.

Options

• Wireless adapter modules for BACnet models are available.

(see Appendix B for network wiring).

• Remote wall mount or duct sensor ready.

• Can be conﬁgured for 2-pipe systems with changeover.

• 3 universal inputs can be used and conﬁgured for advanced

functionality as required by the application.

• Universal input can be conﬁgured for changeover sensor.

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