Viconics VT8300 Low Voltage Application Guide - Manual (Page 7)

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7 Fan Coil Unit Controller Series Application Guide
Viconics Technologies Inc. | 9245 Langelier Blvd. | St.-Leonard | Quebec | Canada | H1P 3K9 | Tel: (514) 321-5660 | Fax: (514) 321-4150
028-0444-01 www.viconics.com | [email protected] February 2015
Tx/Rx
7 Vdc
Com
RUI 1
SCom
RBI 2
SS
RS
Heat -
Heat +
1
2
3
4
5
6
7
8
9
10
SOLIDSTATE
RELAY
(4-32Vdc)
(-)
(+)
SC3404E5000
VTR8300
BACnet+ BACnet- BACnet REF UI 16 - BI1 UI 17 - BI2 SCom
Tx / Rx 7 VDC
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.
On Call for Heat
Electric heat operates to maintain room temperature. Cooling valve
closes and dehumidification is disabled.
On a Demand for Dehumidification
Dehumidification achieved via cooling coil using reheat if necessary.
Dehumidification only allowed in COOL mode or if cooling is enabled
in AUTO mode.
Dehumidification disabled if room temperature falls below low
ambient lockout temperature, which is cooling setpoint minus
configuration defined deadband value.
Options
• Wireless adapter modules for BACnet models are available.
(see Appendix B for network wiring).
• Remote wall mount or return duct sensor ready.
• Can be configured for 2-pipe systems with changeover.
• Binary inputs can be configured to control occupancy via
door or window contact, remote motion sensor, remote night
setback, or provide alarms for service or filter monitoring.
• Universal input can be configured for changeover sensor.