Viconics VT8300 Low Voltage Application Guide - Manual (Page 51)

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51 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
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VT8300
BO2 - Fan L BO3 - Fan M BO4 - Fan H RC (24 V
ac)
C (Common)
RH
BO8
- Aux Heat
OU9
- Clos
e Cool V
UO10
- Close Heat V
UO11
- Open Cool V
UO12
- Open Heat V
BACnet + BACnet - BACnet REF UI 16 UI 17 Common UI 19 UI 20 - RS Common UI22 - SS
Modulating & PWM Control
COMM ON
24 VAC
FCU Low-voltage
TERMINAL BLOCK
DUCT HEATER, SRC
0-10 V 24V Com.
PERMETER HEAT
SOLID STATE RELAY
ZONE DAMPER
COOLING ONLY
ACTUATOR
0-10 V 24V Com. S L
Sequence of Operation and Wiring
Occupied Mode
During Occupied periods, occupied heating and cooling setpoints
are used.
Stand-by Mode (only available when PIR motion detector
sensor is used)
When equipped with a PIR (Passive Infrared) accessory sensor
the Controller provides advanced active occupancy logic, which
automatically switches occupancy levels from occupied to stand-by
to unoccupied when no motion is detected in the room:
•
During PIR activated stand-by periods, stand-by heating and
cooling setpoints are used.
• During PIR activated unoccupied periods, the unoccupied-by
heating and cooling setpoints are used.
Unoccupied Mode
During unoccupied periods, unoccupied heating and cooling
setpoints are used.
Local Override
The Controller reverts back to Occupied mode as specified by a
configuration timer when a local override is requested at Controller.
On Call for Heat
The damper remains closed. The proportional heater acts as a first
step and modulate from 0 to 100% capacity. The perimeter heater
operates as a second step.
On Call for Cool
The damper modulates from closed to open according to demand.
Options
• Wireless adapter modules for BACnet models are available.
(see Appendix B for network wiring).
• Remote wall mounted sensor or return air temperature
sensor can be used instead of internal temperature sensor of
Controller.
• 3 universal inputs can be used and configured for advanced
functionality as required by the application.