Viconics VTR8300 Series, VT8300 Series, VTR8350A5000B, VTR8350A5500B, VTR8350A5500BP Application Manual

Fan Coil Unit Application Guide

VTR8300/VT8300 Series Room Controllers

For firmware Release 2.1

TABLE OF CONTENTS

VTR83 - 3-SPEED FAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

VTR83 - ECM FAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

VT83 - 3-SPEED FAN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

VT83 ECM FAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

VT83 - 3-SPEED MIXED VOLTAGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

APPENDIX A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

APPENDIX B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

APPENDIX X. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

DEPLOYMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

VTR8300 AND VC3000 | LINE-VOLTAGE FAN COIL ROOM CONTROLLERS AND RELAY PACKS

This new cost-effective solution for upgrading line-voltage fan coil unit thermostats requires only two components; the VTR8300 Room
Controller and the VC3000 Relay Pack. This solution allows existing line voltage wiring between the fan coil unit and temperature
controller to be re-used, thereby reducing overall costs and installation time.

The VC3000 Relay Pack features an onboard universal voltage power supply and line-voltage relays which directly drive fractional
horsepower fan motors and valves. This eliminates the need to install and wire costly pilot relays and transformers. The Relay Pack is
not required for the VT8300 Series models.

Commercial interface (local override)

Power

Part Number Description Humidity PIR ZigBee Communication

3

VTR8350A5000B

VTR8350A5500B

VTR8350A5500BP

BACnet® fan coil Room Controller

BACnet® fan coil Room Controller

BACnet® fan coil Room Controller

Transformer Relay Packs for VTR8300 Series

Power

Part Number Description

VC3500E5000 Transformer relay pack five relay fan outputs

VC3504E5000 Transformer relay pack five relay fan outputs, and four inputs

VC3514E5000 Transformer relay pack five relay outputs, smart VDC OCC output, and four inputs

VC3400E5000 Transformer relay pack four relay outputs and smart VDC output

VC3404E5000 Transformer relay pack four relay outputs, smart VDC output, and four inputs

VC3300E5000 Transformer relay pack three relay fan outputs

ZigBee Pro Module for VT(R)8300 Series

Part Number Description

Yes No No BACnet

Yes Yes No BACnet

Yes Yes Yes BACnet

®

®

®

Power

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VCM8000V5000P
Release 20

Optional ZigBee Pro module for VT(R)8300 Series room controllers.

4

Terminal Controller

Terminal Controller

To others

To others

13 - COM +

14 - COM -

VTR83xxA

VTR83xxA

13 - COM +

14 - COM -

VTR8300 | TERMINAL IDENTIFICATION AND FUNCTION

Terminal Identification

Terminal 4 Tx – Rx Communication

Terminal 5 Power Hot 7.0 VDC

Terminal 6 Power Common

Ter min al 12 ECM 0-10 VDC output

Terminal 13 BACnet +

Terminal 14 BACnet -

Terminal 16 BI 1 ( Configurable )

Terminal 17 BI 2 ( Configurable )

Terminal 18 Scom

All VTR83xx
Terminal Equipment Controller

COMMUNICATION WIRING TO VC3XXXE RELAY PACK

VTR83xxA

Terminal Controller

4 - Tx / Rx

5 - 7 Vdc Power Hot

6 - Power Common

VC3504E

Relay Pack

1 - Tx / Rx

2 - 7 Vdc Power Hot

3 - Power Common

VC3300E

Relay Pack

1 - Tx / Rx

2 - 7 Vdc Power Hot

3 - Power Common

To other
VC3xxxE

Relay
Pack

Only ONE VC3xxxE Relay Pack with remote
monitoring inputs can be used under a single
VTR83xxA Controller. All other slave units must be
VC3xxxE Relay Pack(s) WITHOUT remote inputs. A
maximum of 10 VC3xxxE Relay Packs can be used
for a single VTR83xxA Room Controller.

From VTR83xxA to first VC3xxxE Relay Pack

• Uses existing or new field wires

• A minimum of 3 wires are required 14-18 Ga,

• Solid or Stranded, shield not necessary

From first VC3xxxE to all other slave
VC3xxxE Relay Pack(s)

• Uses existing or new field wires

• A minimum of 2 wires are required 14-18 Ga,
Solid or Stranded, shield not necessary

• Connect only two wires: Tx/Rx (1) and Power
Common (3).

• Installation Note:

The maximum distance between the SER8300
Room Controller and the SC3000 relay pack is
recommended at 50ft (15m) or less.

BACnet® Communication Shielded Wiring (if required)

• NOTE: See VTR8300 BACnet® integration manual for more details

Network Wiring Topology

Star Topology

Daisy Chained Topology

Mixed Daisy Chained & Star Topology

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VT8300 LOW-VOLTAGE 24 VAC FAN COIL ROOM CONTROLLERS

This new cost-effective solution for upgrading low-voltage fan coil unit thermostats requires only the VT8300 Room Controller.

The VT8300 Room Controller can also be used along with a SC1300 or SC2300 Relay Pack for mixed-voltage solutions, when control
of both line-voltage and low-voltage end devices is required.

Commercial and Hospitality Interface (Local Override and Degrees C/F Selection)

Power

Part Number Description Humidity PIR ZigBee Communication

5

VT8350U5000B

VT8350U5500B

VT8350U5500BP

BACnet® fan coil Room Controller

BACnet® fan coil Room Controller

BACnet® fan coil Room Controller

Mixed-voltage Relay Packs for VT8300 Series

Part Number Description

VC1300E5000

VC2300E5000

3 on/off outputs, 110/130V 3 speed

3 on/off outputs, 220/240V 3 speed

Wireless Accessories for VT(R)8300 Series

Part Number Description

SED-DOR-P-5045 Wireless door switch

Yes No No BACnet

Yes Yes No BACnet

Yes Yes Ye s BACnet

®

®

®

SED-WIN-P-5045 Wireless window switch

SED-WDS-P-5045 Wireless window and door switch

SED-WDC-G-5045 Wireless window/door sensor

SED-CMS-P-5045 Wireless ceiling mounted motion sensor

SED-WMS-P-5045 Wireless wall mounted motion sensor

SED-MTH-G-5045 Wireless motion/temperature/humidity sensor

SED-WLS-G-5045 Wireless water leakage sensor

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VT8300 | TERMINAL IDENTIFICATION AND FUNCTION FOR 3-SPEED FAN

Fan Type - ECM

Control Type On/Off Floating Analog

1- BO1 Normally Close Heat Valve Close Heat valve Not used

2- BO2 Not used Not used Not used

3- BO3 Not used Not used Not used

4- BO4 ECM Fan Star t ECM Fan Star t ECM Fan Star t

5- RC / 24 V~ Hot 24 V~ Hot 24 V~ Hot 24 V~ Hot

6- C / 24 V~ Com 24 V~ Com 24 V~ Com 24 V~ Com

7- RH Aux Heat Aux Heat Aux Heat

8- BO8 Aux Heat Aux Heat Aux Heat

9- UO9 Normally Close Cool Valve Close Cool Valve Not used

10- UO10 ECM Fan Analog Output ECM Fan Analog Output ECM Fan Analog Output

11- UO 11 Normally Open Cool Valve Open Cool Valve Analog Heat valve

12- U O12 Normally Open Heat Valve Open Heat Valve Analog Cool Valve

13- RS485 + RS485 +

14- RS485 - RS485 -

15- RS485 Ref RS485 Ref

16- UI16 UI16 Function

17- U I17 UI17 Function

18- Scom Common

19- UI19 UI19 Function

20- UI20 Remote Room Sensor

21-Scom Common

22- UI22 Remote Supply Sensor

23- UI23 Not used

24- UI24 Not used

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VT8300 | TERMINAL IDENTIFICATION FOR ECM FAN SYSTEM

Fan Type - ECM

Control Type On/Off Floating Analog

1- BO1 Normally Close Heat Valve Close Heat valve Not used

2- BO2 Not used Not used Not used

3- BO3 Not used Not used Not used

4- BO4 ECM Fan Star t ECM Fan Star t ECM Fan Star t

5- RC / 24 V~ Hot 24 V~ Hot 24 V~ Hot 24 V~ Hot

6- C / 24 V~ Com 24 V~ Com 24 V~ Com 24 V~ Com

7- RH Aux Heat Aux Heat Aux Heat

8- BO8 Aux Heat Aux Heat Aux Heat

9- UO9 Normally Close Cool Valve Close Cool Valve Not used

10- UO10 Analog ECM Fan Analog ECM Fan Analog ECM Fan

11- UO 11 Normally Open Cool Valve Open Cool Valve Analog Heat valve

12- U O12 Normally Open Heat Valve Open Heat Valve Analog Cool Valve

13- RS485 + RS485 +

14- RS485 - RS485 -

15- RS485 Ref RS485 Ref

16- UI16 UI16 Function

17- U I17 UI17 Function

18- Scom Common

19- UI19 UI19 Function

20- UI20 Remote Room Sensor

21-Scom Common

22- UI22 Remote Supply Sensor

23- UI23 Not used

24- UI24 Not used

7

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VTR83 3-Speed

VTR83

1, 2 OR 3-SPEED FAN APPLICATIONS

System Fan Cooling Heating Other

4 pipes 3 Speed 2 positions valve 2 positions valve Door and motion detect

4 pipes 3 Speed 2 positions valve 2 positions valve Motion detect

4 pipes Twice 3 speed 2 positions valve 2 positions valve Two VC3500 relays

2 pipes 3 Speed 2 positions valve Changeover sensor Window sensor

2 pipes 3 Speed 2 positions valve Heating SSR Dehumidification

2 pipes 3 Speed 2 positions valve Changeover sensor Motion detect

2 pipes 3 Speed 2 positions valve Changeover sensor Fresh air damper

See Appendix B for relay pack wiring.

9

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10

VTR83X0A5X00B WITH VC3500E5000 RELAY AND VCM8000V5000P ZIGBEE PRO MODULE: HEATING/
COOLING 4-PIPE FAN COIL UNIT WITH 3-SPEED FAN AND 2-POSITION VALVES

VTR83X0

Onboard
PIR Sensor

3 Speed Fan

Airow Direction

Cooling Coil

2 POSITION

COOLING VALVE

VC3500E5000

Heating Coil

2 POSITION

HEATING VALVE

AND / OR

OR*

Wired Remote
PIR Sensor

Configuration
Parameter Name

Fan control 3 speed
Fan Menu L-M-H-A
Fan cont. heat. On
BI1 Motion NO or Motion NC (remote PIR sensor only)

BI2 Door Dry
Pulsed heating Off
Pipe no. 4
Seq. operation Ht - Cl

* Wired remote sensor cannot be used at the same time as wireless remote sensor(s).

Wireless Remote
PIR Sensor

Configuration Settings

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VTR83X0

BACnet+

BACnet-

BACnet REF

7 VDC

Tx / Rx

UI 16 - BI1

UI 17 - BI2

11

VC3500E5000

1

Tx/Rx

2

7 Vdc

Com

Com

SCom

3

NOTE: See Appendix B for VC3500
wiring to fan coil

WHT
BLK
RED
BLU
GRN
YEL
ORG

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
closed.

On Call for Heat

Heating valve opens to maintain room temperature. Cooling valve
closed.

Wireless Door Switch and Motion

Wireless door switch automatically toggles occupancy to standby.
Motion will switch to occupied as long as the door stays closed

Options

• Wireless adapter modules are available. (see Appendix B for
network wiring).

• Can be configured for 2-pipe systems (without changeover).

• Binary inputs can be configured to control occupancy via
door or window contact, remote motion sensor, or remote
night setback.

3 Speed Fan Operation

System Off

Brown, blue and red wires are not energized

System On: (Fan modes)

• Low: red wire is energized

• Med: blue wire is energized

• High: brown wire is energized.

• Auto: When there is no demand, brown, blue and red wires
are not energized. On demand, system will automatically
switch “on” low (red), medium (blue) or high (brown) speed.

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VTR8350A5X00B WITH VC3404E5000 RELAY: COOLING AND ELECTRIC HEAT 2-PIPE FAN COIL UNIT WITH
3-SPEED FAN, DEHUMIDIFICATION AND 2-POSITION VALVES

VTR8350

3 Speed Fan

Airow Direction

Cooling Coil Electric Heating

2 POSITION

COOLING VALVE

VC3404E5000

SOLID STATE RELAY

SSR

(GENERIC)

Configuration
parameter name

Fan control 3 speed
Fan menu L-M-H-A
Fan cont. heat On
Pulsed heating On
Pipe no. 2
Seq. operation Cool - Rht

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Configuration settings

VTR8350

Tx / Rx

7 VDC

13

VC3404E5000

1

Tx/Rx

2

7 Vdc

Com

Com

3

4

5

6

7

8

9

10

RUI 1

SCom

RBI 2

SS

RS

Heat -

Heat +

WHT
BLK
RED
BLU
GRN
YEL
ORG

BACnet+

SOLIDSTATE
RELAY
(4-32Vdc)

BACnet-

BACnet REF

UI 16 - BI1

UI 17 - BI2

SCom

(-)

(+)

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.

NOTE: See Appendix B for VC3400
wiring to fan coil

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.

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3 Speed Fan Operation

System Off

Brown, blue and red wires are not energized

System On: (Fan modes)

• Low: red wire is energized

• Med: blue wire is energized

• High: brown wire is energized.

• Auto: When there is no demand, brown, blue and red wires are not energized. On demand, system will automatically switch “on”
low (red), medium (blue) or high (brown) speed.

Options

• Wireless adapter modules 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.

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VTR83X0A5X00B WITH VC3504E5000 RELAY AND VCM8000V5000P ZIGBEE PRO MODULE: HEATING/
COOLING WITH CHANGEOVER SENSOR 2-PIPE FAN COIL UNIT WITH 3-SPEED FAN

15

VTR83X0

Onboard
PIR Sensor

3 Speed Fan

Airow Direction

VC3504E5000

Cooling / Heating Coil Supply Sensor

2 POSITION

COOLING VALVE / HEATING VALVE

C/O

SENSOR

SENSOR

Configuration
Parameter Name

Configuration Settings

Fan control 3 speed
Fan Menu L-M-H-A
Fan cont On
BI1 Window
RUI1 COS
Pipe No 2
Seq. operation Cool

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VTR83X0

BACnet+

VC3504E5000

1

Tx/Rx

2

7 Vdc

Com

Com

7 VDC

Tx / Rx

BACnet-

BACnet REF

UI 16 - BI1

UI 17 - BI2

SCom

3

4

RUI 1

5

SCom

6

RBI 2

7

SS

8

RS

NOTE: See Appendix B for VC3500
wiring to fan coil

WHT
BLK
RED
BLU
GRN
YEL
ORG

10K type 2

10K type 2

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

If supply water temperature is less than 24°C (75F), valve opens
to maintain room temperature, else valve closes.

On Call for Heat

If supply water temperature is greater than 25°C (77F), valve
opens to maintain room temperature, else the valve closes.

Supply Air Sensor

Only used for monitoring. Shows automatically if sensor is
connected.

Wireless Window Switch

Wireless window switch automatically locks out heating/cooling
when window is opened.

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Options

• Wireless adapter modules are available. (see Appendix B for network wiring).

• Remote wall mount or return duct sensor ready.

• 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.

3 Speed Fan Operation

System Off

Brown, blue and red wires are not energized

System On: (Fan modes)

• Low: red wire is energized

• Med: blue wire is energized

• High: brown wire is energized.

• Auto: When there is no demand, brown, blue and red wires are not energized. On demand, system will automatically switch “on”
low (red), medium (blue) or high (brown) speed.

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VTR83X0A5X00B WITH VC3514E5000 RELAY: HEATING/COOLING 2-PIPE FAN COIL UNIT WITH 3-SPEED
FAN, FRESH AIR DAMPER AND 2-POSITION VALVES

Fresh Air

DAMPER

VTR83X0

Return Air

3 Speed Fan

Airow Direction

VC3514E5000

COOLING VALVE / HEATING VALVE

C/O

SENSOR

10K OHM TYPE 2

Cooling / Heating Coil Supply Sensor

2 POSITION

SUPPLY SENSOR

10K OHM TYPE 2

Configuration
Parameter Name

Fan control 3 speed
Fan menu L-M-H-A
Fan cont. heat On
RUI1 COS
Pulsed Heating Occ Out
Pipe no. 2
Seq. operation Cool

Configuration Settings

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VTR83X0

BACnet+

19

VC3514E5000

1

Tx/Rx

2

7 Vdc

Com

Com

7 VDC

Tx / Rx

BACnet-

BACnet REF

UI 16 - BI1

UI 17 - BI2

SCom

3

4

RUI 1

5

SCom

6

RBI 2

7

SS

8

RS

9

OCC -

NOTE: See Appendix B for VC3500
wiring to fan coil

WHT
BLK
RED
BLU
GRN
YEL
ORG

For 7 Vdc SSR

Fresh Air Damper

Sequence of Operation and Wiring

Occupied Mode

Setpoints revert to those defined by occupied cooling and
heating. The occupancy output opens fresh air damper to
minimum position.

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. The fresh air damper closes.

Occupied Override Mode

System reverts to occupied mode for duration determined by
“ToccTime” parameter.

On Call for Cool

If supply water temperature is less than 24°C (75F), cooling valve
opens to maintain room temperature, else the valve closes.

On Call for Heat

If supply water temperature is greater than 25°C (77F), heating
valve opens to maintain room temperature, else the valve closes.

Options

• Wireless adapter modules are available. (see Appendix B for
network wiring).

• Remote wall mount or return duct sensor ready.

• 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.

3 Speed Fan Operation

System Off

Brown, blue and red wires are not energized

System On: (Fan modes)

• Low: red wire is energized

• Med: blue wire is energized

• High: brown wire is energized.

• Auto: When there is no demand, brown, blue and red wires
are not energized. On demand, system will automatically
switch “on” low (red), medium (blue) or high (brown) speed.

Supply Air Sensor

Only used for monitoring. Shows automatically if sensor is
connected.

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VTR83X0A5X00B WITH VC3500E5000 AND VC3300E5000 RELAYS: HEATING/COOLING 4-PIPE FAN COIL
UNIT WITH 3-SPEED FAN AND 2-POSITION VALVES WITH SLAVE RELAY PACK

VTR83X0

3 Speed Fan

Airow Direction

VC3300E5000

Cooling Coil

2 POSITION

COOLING VALVE

VC3500E5000

Heating Coil

2 POSITION

HEATING VALVE

Configuration
Parameter Name

Fan control 3 speed
Fan menu L-M-H-A
Fan cont. heat On
Pipe No 4
Seq. operation Ht-Cl

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Configuration Settings

VC3500E5000T

21

VTR83X0

BACnet+

BACnet-

BACnet REF

7 VDC

Tx / Rx

UI 16 - BI1

UI 17 - BI2

1

2

Com

3

WHT
BLK
RED
BLU
GRN
YEL
ORG

VC3300E5000

1

2

3

NOTE: See Appendix B for VC3500
wiring to fan coil

SCom

WHT
BLK
RED
BLU
GRN
YEL
ORG

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.

Options

• Wireless adapter modules are available. (see Appendix B for
network wiring).

• Can be configured for 2-pipe systems without 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.

3 Speed Fan Operation

System Off

Brown, blue and red wires are not energized

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.

System On: (Fan modes)

• Low: red wire is energized

• Med: blue wire is energized

• High: brown wire is energized.

• Auto: When there is no demand, brown, blue and red wires
are not energized. On demand, system will automatically
switch “on” low (red), medium (blue) or high (brown) speed.

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22

VTR83X0A5X00B WITH VC3504E5000 RELAY: HEATING/COOLING WITH CHANGEOVER SENSOR
2-PIPE FAN COIL UNIT WITH 3-SPEED FAN AND 2-POSITION VALVES

Window Switch

SED-WIN-P-5045

3 Speed Fan

Airow Direction

Cooling / Heating Coil Supply Sensor

VTR83X0

Onboard
PIR Sensor

VC3504E5000

Changeover Sensor: 10K Ohm type 2

Supply Sensor: 10K Ohm type 2

2 POSITION

COOLING VALVE / HEATING VALVE

C/O

SENSOR

SENSOR

Configuration Parameter
Name

Fan control 3 speed

Fan menu L-M-H-A

Fan cont. heat On

BI1 Window

RUI1 COS

Pipe no. 2

Seq. operation Cool

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Configuration Settings

VTR83X0

BACnet+

BACnet-

BACnet REF

7 VDC

Tx / Rx

UI 16 - BI1

UI 17 - BI2

23

VC3504E5000

1

Tx/Rx

2

7 Vdc

Com

Com

SCom

3

4

RUI 1

5

SCom

6

RBI 2

7

SS

8

RS

NOTE: See Appendix B for VC3500
wiring to fan coil

WHT
BLK
RED
BLU
GRN
YEL
ORG

BI1 (Window)

SCom

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

If supply water temperature is less than 24°C (75F), cooling valve opens to maintain room temperature, else the valve closes.

On Call for Heat

If supply water temperature is greater than 25°C (77F), heating valve opens to maintain room temperature, else the valve closes.

Supply Air Sensor

Only used for monitoring. Shows automatically if sensor is connected.

Wired Window Switch

The window switch automatically locks out heating/cooling when window opens.

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028-0444-06 November 2018

24

Options

• Wireless adapter modules are available. (see Appendix B for network wiring).

• Models available with factory installed PIR sensor.

• Remote wall mount or 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 night setback, or provide alarms for
service or filter monitoring.

• Universal input can be configured for changeover sensor.

3 Speed Fan Operation

System Off

Brown, blue and red wires are not energized

System On: (Fan modes)

• Low: red wire is energized

• Med: blue wire is energized

• High: brown wire is energized.

• Auto: When there is no demand, brown, blue and red wires are not energized. On demand, system will automatically switch “on”
low (red), medium (blue) or high (brown) speed.

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028-0444-06 November 2018

VTR83X0A5X00B WITH VC3500E5000 RELAY: HEATING/COOLING 4-PIPE FAN COIL UNIT WITH 3-SPEED

AND / OR

OR*

FAN AND 2-POSITION VALVES

25

VTR83X0

Onboard
PIR Sensor

3 Speed Fan

Airow Direction

Cooling Coil

2 POSITION

COOLING VALVE

VC3500E5000

Heating Coil

2 POSITION

HEATING VALVE

Door Switch

SED-DOR-P-5045

Wired Remote
PIR Sensor

Configuration
Parameter Name

Wireless Remote
PIR Sensor

Configuration Settings

Fan control 3 speed
Fan menu L-M-H-A
Fan cont. heat On
BI1 Motion NO or Motion NC (remote PIR sensor only)
BI2 Door Dry
Pipe No 4
Seq. Operat Ht-Cl

* Wired remote sensor cannot be used at the same time as wireless remote sensor(s).

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028-0444-06 November 2018

26

VTR83X0

BACnet+

BACnet-

BACnet REF

7 VDC

Tx / Rx

UI 16 - BI1

UI 17 - BI2

VC3500E5000

1

Tx/Rx

2

7 Vdc

Com

Com

SCom

3

NOTE: See Appendix B for VC3500
wiring to fan coil

WHT
BLK
RED
BLU
GRN
YEL
ORG

BI2 (Door)

SCom

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.

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.

Door Switch and Motion

Door switccs occupancy to standby. Motion will switch to
occupied as long as door stays closed.

Options

• Wireless adapter modules are available. (see Appendix B for
network wiring).

• Models available with factory installed PIR sensor.

• Can be configured for 2-pipe systems without 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

3 Speed Fan Operation

System Off

Brown, blue and red wires are not energized

System On: (Fan modes)

• Low: red wire is energized

• Med: blue wire is energized

• High: brown wire is energized.

• Auto: When there is no demand, brown, blue and red wires
are not energized. On demand, system will automatically
switch “on” low (red), medium (blue) or high (brown) speed.

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028-0444-06 November 2018

VTR83 ECM

28

VTR83

ECM FAN APPLICATIONS

System Fan Cooling Heating Other

4 pipes ECM 2 positions valve 2 positions valve Door and motion detect

4 pipes ECM 2 positions valve 2 positions valve Motion detect

2 pipes ECM 2 positions valve Changeover sensor Fresh air damper

2 pipes ECM 2 positions valve Changeover sensor Motion and Window detect

2 pipes ECM 2 positions valve Heating SSR Dehumifidication

See Appendix B for relay pack wiring.

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

VTR83X0A5X00B WITH VC3500E5000 RELAY AND VCM8000V5000P ZIGBEE PRO MODULE: HEATING/
COOLING 4-PIPE FAN COIL UNIT WITH ECM FAN AND 2-POSITION VALVES

29

VTR83X0

Onboard
PIR Sensor

ECM Fan

Airow Direction

Cooling Coil

2 POSITION

COOLING VALVE

VC3500E5000

Heating Coil

2 POSITION

HEATING VALVE

AND / OR

OR*

Wired Remote
PIR Sensor

Configuration
Parameter Name

Fan control ECM
Fan Menu L-M-H-A
Fan cont. heat. On
BI1 Motion NO or Motion NC (remote PIR sensor only)
BI2 Door Dry
Pulsed heating Off
Pipe no. 4
Seq. operation Ht - Cl

* Wired remote sensor cannot be used at the same time as wireless remote sensor(s).

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028-0444-06 November 2018

Wireless Remote
PIR Sensor

Configuration Settings

30

VTR83X0

BACnet+

VC3500E5000

1

Tx/Rx

2

7 Vdc

Com

Com

7 VDC

UI 17 - BI2

SCom

0-10Vdc

Tx / Rx

BACnet-

BACnet REF

UI 16 - BI1

3

NOTE: See Appendix B for VC3500
wiring to fan coil

WHT
BLK
RED
BLU
BRN
YEL
ORG

(-)

(+)

ECM FAN

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 closed.

On Call for Heat

Heating valve opens to maintain room temperature. Cooling valve closed.

Wireless Door Switch

Wireless door switch automatically toggles occupancy.

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028-0444-06 November 2018

Options

• Wireless adapter modules are available. (see Appendix B for network wiring).

• Can be configured for 2-pipe systems (without changeover).

• Binary inputs can be configured to control occupancy via door or window contact, remote motion sensor, or remote night setback

ECM Fan Operation

System Off

UO12 = 0Vdc and brown wire (fan start) is not energized

System On: (Fan modes)

• Low: UO12 = 2.2 Vdc (adjustable from configuration menu) and (optional) brown wire “fan start” is energized.

• Med: UO12 = 6.0 Vdc (adjustable from configuration menu) and (optional) brown wire “fan start” is energized

• High: UO12 = 8.6 Vdc (adjustable from configuration menu) and (optional) brown wire “fan start” is energized.

• Auto: When there is no demand, UO12 = 0 Vdc and (optional) brown wire “fan start”is “off”. On demand, system will modulate
from “low” to “high” voltages (adjustable from configuration menu) and (optional) brown wire “fan start” is energized.

31

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028-0444-06 November 2018

32

VTR8350A5X00B WITH VC3404E5000 RELAY: COOLING AND ELECTRIC HEAT 2-PIPE FAN COIL UNIT WITH
ECM FAN, DEHUMIDIFICATION AND 2-POSITION VALVES

VTR8350

ECM Fan

Airow Direction

Cooling Coil Electric Heating

2 POSITION

COOLING VALVE

VC3404E5000

SOLID STATE RELAY

SSR

(GENERIC)

Configuration
parameter name

Fan control ECM
Fan menu L-M-H-A
Fan cont. heat On
Pulsed heating On
Pipe no. 2
Seq. operation Cool-Rht

Configuration settings

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028-0444-06 November 2018

VTR8350

WHT

Tx / Rx

7 VDC

33

VC3404E5000

1

Tx/Rx

2

7 Vdc

Com

Com

0-10Vdc

3

4

5

6

7

8

9

10

RUI 1

SCom

RBI 2

SS

RS

Heat -

Heat +

BLK
RED
BLU
BRN
YEL
ORG

BACnet+

SOLIDSTATE
RELAY
(4-32Vdc)

BACnet-

BACnet REF

UI 16 - BI1

UI 17 - BI2

SCom

(-)

(+)

(-)

(+)

ECM FAN

NOTE: See Appendix B for VC3400
wiring to fan coil

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.

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028-0444-06 November 2018

34

ECM Fan Operation

System Off

UO12 = 0Vdc and brown wire (fan start) is not energized

System On: (Fan modes)

• Low: UO12 = 2.2 Vdc (adjustable from configuration menu) and (optional) brown wire “fan start” is energized.

• Med: UO12 = 6.0 Vdc (adjustable from configuration menu) and (optional) brown wire “fan start” is energized

• High: UO12 = 8.6 Vdc (adjustable from configuration menu) and (optional) brown wire “fan start” is energized.

• Auto: When there is no demand, UO12 = 0 Vdc and (optional) brown wire “fan start”is “off”. On demand, system will modulate
from “low” to “high” voltages (adjustable from configuration menu) and (optional) brown wire “fan start” is energized.

Options

• Wireless adapter modules 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.

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

VTR83X0A5X00B WITH VC3514E5000 RELAY: HEATING/COOLING 2-PIPE FAN COIL UNIT WITH 3-SPEED
FAN, FRESH AIR DAMPER AND 2-POSITION VALVES

35

Fresh Air

DAMPER

VTR83X0

Return Air

ECM Fan

Airow Direction

VC3514E5000

Changeover Sensor
10k Ohm type 2

SENSOR

Cooling / Heating Coil

2 POSITION

COOLING VALVE / HEATING VALVE

C/O

SENSOR

Supply Sensor
10k Ohm type 2

Configuration
Parameter Name

Fan control ECM
Fan menu L-M-H-A
Fan cont. heat On
RUI1 COS
Pulsed Heating Occ Out
Pipe no. 2
Seq. operation Cool

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

Configuration Settings

36

VTR83X0

BACnet +

BACnet -

BACnet REF

Tx / Rx

BI 1

7 VDC

BI 2

Com

Common

0-10VDC

ECM Fan

(+)

(−)

1

Tx/Rx

2

7 Vdc

Com

3

4

RUI 1

5

SCom

6

RBI 2

7

SS

8

RS

9

OCC -

NOTE: See Appendix B for VC3500
wiring to fan coil

VC3514E5045

WHT
BLK
RED
BLU
GRN
YEL
ORG

7 Vdc for SSR

Fresh Air Damper

Sequence of Operation and Wiring

Occupied Mode

Setpoints revert to those defined by occupied cooling and heating. The occupancy output opens fresh air damper to minimum
position.

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. The fresh air damper closes.

Occupied Override Mode

System reverts to occupied mode for duration determined by “ToccTime” parameter.

On Call for Cool

If supply water temperature is less than 24°C (75F), cooling valve opens to maintain room temperature, else the valve closes.

On Call for Heat

If supply water temperature is greater than 25°C (77F), heating valve opens to maintain room temperature, else the valve closes.

Supply Air Sensor

Only used for monitoring. Shows automatically if sensor is connected.

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

37

Options

• Wireless adapter modules for BACnet models are available. (see Appendix B for network wiring).

• Remote wall mount or return duct sensor ready.

• 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.

ECM Fan Operation

System Off

UO12 = 0Vdc and brown wire (fan start) is not energized

System On: (Fan modes)

• Low: UO12 = 2.2 Vdc (adjustable from configuration menu) and (optional) brown wire “fan start” is energized.

• Med: UO12 = 6.0 Vdc (adjustable from configuration menu) and (optional) brown wire “fan start” is energized.

• High: UO12 = 8.6 Vdc (adjustable from configuration menu) and (optional) brown wire “fan start” is energized.

• Auto: When there is no demand, UO12 = 0 Vdc and (optional) brown wire “fan start”is “off”. On demand, system will modulate
from “low” to “high” voltages (adjustable from configuration menu) and (optional) brown wire “fan start” is energized.

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

38

VTR83X0A5X00B WITH VC3504E5000 RELAY: COOLING AND ELECTRIC HEAT
2-PIPE FAN COIL UNIT WITH 3-SPEED FAN AND 2-POSITION VALVES

Window Switch

SED-WIN-P-5045

ECM Fan

Airow Direction

Cooling / Heating Coil Supply Sensor

VTR83X0

Onboard
PIR Sensor

VC3504E5000

2 POSITION

COOLING VALVE / HEATING VALVE

C/O

SENSOR

SENSOR

Changeover Sensor: 10K Ohm type 2

Supply Sensor: 10K Ohm type 2

Configuration Parameter
Name

Fan control ECM

Fan menu L-M-H-A

Fan cont. heat On

BI1 Window

RUI1 COS

Pipe no. 2

Seq. operation Cool

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

Configuration Settings

39

ECM Fan

VTR83X0

BACnet+

BI1 (Window)

(+)

(-)

1

Tx/Rx

2

7 Vdc

Com

Com

7 VDC

Tx / Rx

BACnet-

BACnet REF

UI 16 - BI1

UI 17 - BI2

SCom

0-10 VDC

SCom

3

4

RUI 1

5

SCom

6

RBI 2

7

SS

8

RS

NOTE: See Appendix B for VC3500
wiring to fan coil

VC3504E5000

WHT
BLK
RED
BLU
BRN
YEL
ORG

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

If supply water temperature is less than 24°C (75F), cooling valve opens to maintain room temperature, else the valve closes.

On Call for Heat

If supply water temperature is greater than 25°C (77F), heating valve opens to maintain room temperature, else the valve closes.

Supply Air Sensor

Only used for monitoring. Shows automatically if sensor is connected.

Wired Window Switch

The window switch automatically locks out heating/cooling when window opens.

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

40

Options

• Wireless adapter modules are available. (see Appendix B for network wiring).

• Models available with factory installed PIR sensor.

• Remote wall mount or 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 night setback, or provide alarms for
service or filter monitoring.

• Universal input can be configured for changeover sensor.

ECM Fan Operation

System Off

UO12 = 0Vdc and brown wire (fan start) is not energized

System On: (Fan modes)

• Low: UO12 = 2.2 Vdc (adjustable from configuration menu) and (optional) brown wire “fan start” is energized.

• Med: UO12 = 6.0 Vdc (adjustable from configuration menu) and (optional) brown wire “fan start” is energized.

• High: UO12 = 8.6 Vdc (adjustable from configuration menu) and (optional) brown wire “fan start” is energized.

• Auto: When there is no demand, UO12 = 0 Vdc and (optional) brown wire “fan start”is “off”. On demand, system will modulate
from “low” to “high” voltages (adjustable from configuration menu) and (optional) brown wire “fan start” is energized.

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

VTR83X0A5X00B WITH VC3500E5000 RELAY: HEATING/COOLING 4-PIPE FAN COIL UNIT WITH ECM FAN
AND 2-POSITION VALVES

41

VTR83X0

Onboard
PIR Sensor

AND / OR

ECM Fan

Airflow Direction

Cooling Coil

2 POSITION

COOLING VALVE

VC3500E5000

Heating Coil

2 POSITION

HEATING VALVE

Door Switch

SED-DOR-P-5045

OR*

Wired Remote
PIR Sensor

Configuration
Parameter Name

Fan control ECM
Fan menu L-M-H-A
Fan cont. heat On
BI1 Motion NO or Motion NC (remote PIR sensor only)
BI2 Door Dry
Pipe No 4
Seq. Operat Ht-Cl

* Wired remote sensor cannot be used at the same time as wireless remote sensor(s).

Wireless Remote
PIR Sensor

Configuration Settings

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028-0444-06 November 2018

42

VTR83X0

Tx / Rx

7 VDC

ECM Fan

(+)

(-)

1

Tx/Rx

2

7 Vdc

Com

Com

0-10 VDC

3

NOTE: See Appendix B for VC3500
wiring to fan coil

VC3500E5000

WHT
BLK
RED
BLU
BRN
YEL
ORG

BACnet+

BACnet-

BACnet REF

UI 16 - BI1

UI 17 - BI2

SCom

BI2 (Door)

SCom

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.

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.

Door Switch And Motion

Door switch automatically toggles occupancy to Standby.
Motion will switch to Occupied, as long as the door stays closed.

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

43

Options

• Wireless adapter modules for BACnet models are available. (see Appendix B for network wiring).

• Models available with factory installed PIR sensor.

• Can be configured for 2-pipe systems without 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.

ECM Fan Operation

System Off

UO12 = 0Vdc and brown wire (fan start) is not energized

System On: (Fan modes)

• Low: UO12 = 2.2 Vdc (adjustable from configuration menu) and (optional) brown wire “fan start” is energized.

• Med: UO12 = 6.0 Vdc (adjustable from configuration menu) and (optional) brown wire “fan start” is energized

• High: UO12 = 8.6 Vdc (adjustable from configuration menu) and (optional) brown wire “fan start” is energized

• Auto: When there is no demand, UO12 = 0 Vdc and (optional) brown wire “fan start”is “off”. On demand, system will modulate
from “low” to “high” voltages (adjustable from configuration menu) and (optional) brown wire “fan start” is energized.

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028-0444-06 November 2018

VT83 3-Speed

VT83

1, 2 OR 3-SPEED FAN APPLICATIONS

System Fan Cooling Heating Other

4 pipes 3 Speed Tri-state valve actuator Tri-state valve actuator

4 pipes 3 Speed 0-10Vdc valve actuator 0-10Vdc valve actuator Motion detect + dehumidification

4 pipes 3 Speed 2 positions valve actuator 2 positions valve actuator Motion detect + dehumidification

4 pipes 3 Speed 0-10Vdc valve actuator 2 positions valve actuator ---

2 pipes 3 Speed 0-10Vdc valve actuator Electric heater ---

2 pipes 3 Speed 0-10Vdc valve actuator None ---

2 pipes 1 Speed 2 positions valve actuator None Fresh air damper

See Appendix B for relay pack wiring.

Door and motion detect +
dehumidification

45

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028-0444-06 November 2018

46

AND / OR

OR*

VT8350U5X00B HEATING/COOLING 4-PIPE FAN COIL UNIT WITH 3-SPEED FAN, TRI-STATE FLOATING
VALVES AND DEHUMIDIFICATION SEQUENCE FOR LOW VOLTAGE

3 Speed Fan

VT8350

Onboard
PIR Sensor

Airow Direction

Cooling Coil

TRI-STATE

COOLING VALVE

Heating Coil

TRI-STATE

HEATING VALVE

Wired Remote
PIR Sensor

Configuration
Parameter Name

Fan control 3 speed
Fan menu L-M-H-A
Control Type Floating
UI16 Motion NO or Motion NC (remote PIR sensor only)
UI17 Door Dry
Pipe no. 4
Seq. operation Cool / Heat

* Wired remote sensor cannot be used at the same time as wireless remote sensor(s).

Configuration Settings

Wireless Remote
PIR Sensor

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028-0444-06 November 2018

47

VT8350

BO3 - Fan M

BO4 - Fan H

RC (24 Vac)

BO2 - Fan L

1 2 3 4 5 6

1 2 3 4 5 6

13 14 15 16 17 18

13 14 15 16 17 18

C (Common)

Floating Control + 3 Speed Fan

RH

- Close Cool V

BO8 - Aux Heat

UO9

UO10 - Close Heat V

UO11 - Open Cool V

UO12 - Open Heat V

7 8 9 10 11 12

7 8 9 10 11 12

19 20 21 22 23 24

19 20 21 22 23 24

HEATING VALVE

Close Open Com.

COOLING VALVE

Close Open Com.

FCU Low-voltage

TERMINAL BLOCK

COMM ON

24 VAC

FAN HI

FAN MED

FAN LO

UI 19

UI 20 - RS

Common

BACnet +

BACnet -

BACnet REF

UI 16

UI 17

Common

UI22 - SS

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%.

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028-0444-06 November 2018

48

3 speed Fan Operation

System Off

BO2, BO3 and BO4 are not energized

System On: (Fan modes)

• BO2 is energized.

• BO3 is energized

• BO4 is energized.

• Auto: When there is no demand, BO2, BO3 and BO4 are not energized. On demand, system will automatically switch “On” low
(BO2), medium (BO3) or high (B04) speed.

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.

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

VT8350U5X00B HEATING/COOLING 4-PIPE FAN COIL UNIT WITH 3-SPEED FAN, 0-10 VDC ANALOG
VALVES AND DEHUMIDIFICATION SEQUENCE FOR LOW VOLTAGE

49

3 Speed Fan

VT8350

Airow Direction

Cooling Coil

ANALOG

COOLING VALVE

Heating Coil

ANALOG

HEATING VALVE

Onboard
PIR Sensor

Configuration
Parameter Name

Fan control 3 speed
Control type Analog
Fan menu L-M-H-A
Pipe no. 4
Seq. operation Cool / Heat

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

Configuration Settings

50

VT8350

BO3 - Fan M

BO4 - Fan H

RC (24 Vac)

BO2 - Fan L

1 2 3 4 5 6

1 2 3 4 5 6

13 14 15 16 17 18

13 14 15 16 17 18

C (Common)

Modulating Control +

RH

7 8 9 10 11 12

7 8 9 10 11 12

19 20 21 22 23 24

19 20 21 22 23 24

V

BO8 - Aux Heat

- Analog Heat

UO11

UO12 - Analog Cool

3 Speed Fan

HEATING VALVE

0-10 v 24 v Com.

COOLING VALVE

0-10 v 24 v Com.

FCU Low-voltage

TERMINAL BLOCK

COMM ON

24 VAC

FAN HI

FAN MED

FAN LO

UI 19

UI 20 - RS

Common

BACnet +

BACnet -

BACnet REF

UI 16

UI 17

Common

UI22 - SS

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. Dehumidification enabled.

On Call for Heat

Heating valve opens to maintain room temperature. Cooling valve closes. Dehumidification disabled.

On Demand for Dehumidification

Dehumidification is achieved via cooling coil using heating coil for 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.

Reheat disabled if cooling demand reaches 100%.

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028-0444-06 November 2018

3 speed Fan Operation

System Off

BO2, BO3 and BO4 are not energized

System On: (Fan modes)

• BO2 is energized.

• BO3 is energized

• BO4 is energized.

• Auto: When there is no demand, BO2, BO3 and BO4 are not energized. On demand, system will automatically switch “On” low
(BO2), medium (BO3) or high (B04) speed.

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.

• 3 universal inputs can be used and configured for advanced functionality as required by the application.

• Universal input can be configured for changeover sensor.

51

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028-0444-06 November 2018

52

VT8350U5X00B HEATING/COOLING 4-PIPE FAN COIL UNIT WITH 3-SPEED FAN, 2-POSITION VALVES AND
DEHUMIDIFICATION SEQUENCE FOR LOW VOLTAGE

3 Speed Fan

VT8350

Airow Direction

Cooling Coil

2 POSITION

COOLING VALVE

Heating Coil

2 POSITION

HEATING VALVE

Configuration
Parameter Name

Fan control 3 speed
Fan menu L-M-H-A
Control Type On/Off
Pipe no. 4
Seq. operation Cool/Heat

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

Configuration Settings

53

VT8350

BO2 - Fan L

1 2 3 4 5 6

1 2 3 4 5 6

13 14 15 16 17 18

13 14 15 16 17 18

BO3 - Fan M

BO4 - Fan H

RC (24 Vac)

C (Common)

On / Off Control + 3 Speed Fan

RH

- NC Cool V

UO9

BO8 - Aux Heat

UO10 - NC Heat V

UO11 - NO Cool V

UO12 - NO Heat V

7 8 9 10 11 12

7 8 9 10 11 12

19 20 21 22 23 24

19 20 21 22 23 24

HEATING VALVE

IF NC IF NO Com.

COOLING VALVE

IF NC IF NO Com.

or or

FCU Low-voltage

TERMINAL BLOCK

COMM ON

24 VAC

FAN HI

FAN MED

FAN LO

UI 19

UI 20 - RS

Common

BACnet +

BACnet -

BACnet REF

UI 16

UI 17

Common

UI22 - SS

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. Dehumidification enabled.

On Call for Heat

Heating valve opens to maintain room temperature. Cooling valve closes. Dehumidification disabled.

On Demand for Dehumidification

Dehumidification is achieved via cooling coil using heating coil for 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.

Reheat disabled if cooling demand reaches 100%.

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028-0444-06 November 2018

54

3 speed Fan Operation

System Off

BO2, BO3 and BO4 are not energized

System On: (Fan modes)

• BO2 is energized.

• BO3 is energized

• BO4 is energized.

• Auto: When there is no demand, BO2, BO3 and BO4 are not energized. On demand, system will automatically switch “On” low
(BO2), medium (BO3) or high (B04) speed.

Options

• Wireless adapter modules for BACnet models are available. (see Appendix B for network wiring).

• Models available with factory installed PIR sensor.

• Remote wall mount or duct sensor ready.

• Can be configured for 2-pipe systems.

• 3 universal inputs can be used and configured for advanced functionality as required by the application.

• Universal input can be configured for changeover sensor.

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

VT83X0U5X00B COOLING ONLY 2-PIPE FAN COIL UNIT WITH SINGLE SPEED FAN, 2-POSITION COOLING
VALVE AND FRESH AIR DAMPER FOR LOW VOLTAGE

55

Fresh Air

DAMPER

Return Air

VT8350

3-Speed Fan

Airflow Direction

Cooling Coil

2 POSITION

COOLING VALVE

Configuration
Parameter Name

Fan control 3 speed
Fan menu On-Auto
Control Type On/Off
BO8 AuxOut Aux NO
Pipe no. 2
Seq. operation Cool only

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

Configuration Settings

56

VT8350

BO2 - Fan L

BO3 - Fan M

RC (24 Vac)

BO4 - Fan H

C (Common)

1 2 3 4 5 6

1 2 3 4 5 6

On / Off Control +

RH

- Aux Heat

BO8

OU9 - NC Cool V

UO10 - NC Heat V

UO12 - NO Heat V

UO11 - NO Cool V

7 8 9 10 11 12

7 8 9 10 11 12

3 Speed Fan

FRESH AIR DAMPER

ON / OFF ACTUATOR

COOLING VALVE

L

S

IF NC IF NO Com.

or

FCU Low-voltage

TERMINAL BLOCK

COMM ON

24 VAC

13 14 15 16 17 18

13 14 15 16 17 18

BACnet +

BACnet -

BACnet REF

UI 16

UI 17

Common

19 20 21 22 23 24

19 20 21 22 23 24

UI 19

UI 20 - RS

Common

UI22 - SS

Sequence of Operation and Wiring

Occupied Mode

Setpoints revert to those defined by occupied cooling and
heating. The auxiliary contact closes forcing fresh air damper to
open.

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. The auxiliary contact opens causing fresh air damper to
close completely.

Occupied Override Mode

System reverts to occupied mode for duration determined by
“ToccTime” parameter. The auxiliary contact closes forcing fresh
air damper to open.

On Call for Cool

Cooling valve opens.

On Call for Heat

Cooling valve closes.

FAN

Options

• Wireless adapter modules are available. (see Appendix B for
network wiring).

• Remote wall mount or duct sensor ready.

• Can be configured for 4-pipe systems.

• 3 universal inputs can be used and configured for advanced
functionality as required by the application.

• Can be configured for two speed or three speed fan control.

1 speed Fan Operation

System Off

BO2, BO3 and BO4 are not energized

System On: (Fan modes)

• On: BO4 is energized.

• Auto: When there is no demand, BO4 is not energized. On
demand, BO4 will be energized.

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

VT83X0U5X00B COOLING WITH REHEAT 4-PIPE FAN COIL UNIT WITH 3-SPEED FAN, ANALOG COOLING
VALVE AND N.C ON/OFF HEATING VALVE FOR LOW VOLTAGE

57

VT83X0

3 Speed Fan

Airow Direction

Cooling Coil

ANALOG

COOLING VALVE

Heating Coil

2 POSITION

HEATING VALVE

Configuration
Parameter Name

Fan control 3 speed
Control type Analog
Fan menu L-M-H-A
BO8 Out Time 0 = 15 Minute
BO8 AuxOut Reheat
Pipe no. 4
Seq. operation Cool-rht

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

Configuration Settings

58

VT83X0

BO2 - Fan L

1 2 3 4 5 6

1 2 3 4 5 6

13 14 15 16 17 18

13 14 15 16 17 18

BO3 - Fan M

BO4 - Fan H

RC (24 Vac)

C (Common)

Mod. & On / Off Control + 3 Speed Fan

- Aux Heat

BO8

V

HEATING VALVE

NC Com.

UO12 - Analog Cool

UO11 - Analog Heat

RH

7 8 9 10 11 12

7 8 9 10 11 12

19 20 21 22 23 24

19 20 21 22 23 24

COOLING VALVE

0-10 V 24V Com.

FCU Low-voltage

TERMINAL BLOCK

COMM ON

24 VAC

FAN HI

FAN MED

FAN LO

UI 19

UI 20 - RS

Common

BACnet +

BACnet -

BACnet REF

UI 16

UI 17

Common

UI22 - SS

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

Analog valve starts modulating based on cooling demand.

On Call for Heat

Heating valve opens.

Options

• Wireless adapter modules are available. (see Appendix B for
network wiring).

• Remote wall mount or duct sensor ready.

• Can be configured for 2-pipe systems.

• Can be configured to single or two speed fan.

• 3 universal inputs can be used and configured for advanced
functionality as required by the application.

3 speed Fan Operation

System Off

BO2, BO3 and BO4 are not energized

System On: (Fan modes)

• BO2 is energized.

• BO3 is energized

• BO4 is energized.

• Auto: When there is no demand, BO2, BO3 and BO4 are
not energized. On demand, system will automatically switch
“On” low (BO2), medium (BO3) or high (B04) speed.

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

VT83X0U5X00B COOLING ONLY 2-PIPE FAN COIL UNIT WITH 3-SPEED FAN AND 0-10VDC ANALOG
COOLING VALVE FOR LOW VOLTAGE

59

VT83X0

3 Speed Fan

Airow Direction

Cooling Coil

ANALOG

COOLING VALVE

Configuration
Parameter Name

fan control 3 speed
Control type Analog
Fan menu L-M-H-A
Pipe no. 2
Seq. operation Cool only

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

Configuration Settings

60

VT83X0

BO2 - Fan L

1 2 3 4 5 6

1 2 3 4 5 6

13 14 15 16 17 18

13 14 15 16 17 18

BO3 - Fan M

BO4 - Fan H

RC (24 Vac)

C (Common)

Modulating Control + 3-Speed Fan

RH

- Analog Heat

BO8 - Aux Heat

7 8 9 10 11 12

7 8 9 10 11 12

19 20 21 22 23 24

19 20 21 22 23 24

UO11

UO12 - Analog Cool

COOLING VALVE

0-10 V 24V Com.

FCU Low-voltage

TERMINAL BLOCK

COMM ON

24 VAC

FAN HI

FAN MED

FAN LO

UI 193

UI 20 - RS

Common

BACnet +

BACnet -

BACnet REF

UI 16

UI 17

Common

UI22 - SS

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

Analog valve modulates allowing cool air to flow to reach
setpoint.

On Call for Heat

Valve closes.

Options

• Wireless adapter modules are available. (see Appendix B for
network wiring).

• Remote wall mount or duct sensor ready.

• Can be configured for 4-pipe systems.

• 3 universal inputs can be used and configured for advanced
functionality as required by the application.

• Can be configured to two or three speed fan.

3 speed Fan Operation

System Off

BO2, BO3 and BO4 are not energized

System On: (Fan modes)

• BO2 is energized.

• BO3 is energized

• BO4 is energized.

• Auto: When there is no demand, BO2, BO3 and BO4 are
not energized. On demand, system will automatically switch
“On” low (BO2), medium (BO3) or high (B04) speed.

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

VT83X0U5X00B COOLING WITH REHEAT 2-PIPE FAN COIL UNIT WITH 3-SPEED FAN, 2-POSITION VALVE
AND ELECTRIC REHEAT FOR LOW VOLTAGE

61

3 Speed Fan

VT83X0

Airow Direction

Cooling Coil

2 POSITION

COOLING VALVE

Heating

ON / OFF DUCT

HEATER

Configuration
Parameter Name

Configuration Settings

Fan control 3 speed
Fan menu L-M-H-A
Control Type On/Off
BO8 Out Time 0 = 15 Minute
BO8 AuxOut Reheat
Pipe no. 2
Seq. operation Cool-rht

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

62

VT83X0

BO3 - Fan M

BO4 - Fan H

RC (24 Vac)

BO2 - Fan L

1 2 3 4 5 6

1 2 3 4 5 6

13 14 15 16 17 18

13 14 15 16 17 18

C (Common)

On / O Controlor+ 3 Speed Fan

RH

Close Cool V

BO8 - Aux Heat

UO9 -

UO10 - Close Heat V

UO11 - Open Cool V

UO12 - Open Heat V

7 8 9 10 11 12

7 8 9 10 11 12

19 20 21 22 23 24

19 20 21 22 23 24

COOLING VALVE

S

L

IF NC IF NO Com.

FCU Low-voltage

TERMINAL BLOCK

COMM ON

24 VAC

FAN HI

FAN MED

FAN LO

UI 19

UI 20 - RS

Common

BACnet +

BACnet -

BACnet REF

UI 16

UI 17

Common

UI22 - SS

Sequence of Operation and Wiring

Occupied Mode

Setpoints revert to those defined by occupied cooling and
heating. The changeover sensor sends supply air temperature to
controller.

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. Electric heat stays Off.

On Call for Heat

Valve closes. Electric heat activates.

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 4-pipe systems.

• 3 universal inputs can be used and configured for advanced
functionality as required by the application.

• Can be configured to single or two speed fan.

3 speed Fan Operation

System Off

BO2, BO3 and BO4 are not energized

System On: (Fan modes)

• BO2 is energized.

• BO3 is energized

• BO4 is energized.

• Auto: When there is no demand, BO2, BO3 and BO4 are
not energized. On demand, system will automatically switch
“On” low (BO2), medium (BO3) or high (B04) speed.

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

VT83 ECM

64

VT83

ECM FAN APPLICATIONS

System Fan Cooling Heating Other

4 pipes ECM Tri-state valve actuator Tri-state valve actuator

4 pipes ECM 0-10 Vdc valve actuator 0 -10 Vdc valve actuator Motion detect + dehumidification

4 pipes ECM

4 pipes ECM 0-10 Vdc valve actuator 2 positions valve actuator ---

2 pipes ECM 0-10 Vdc valve actuator Electric heater ---

2 pipes ECM 0-10 Vdc valve actuator None ---

2 positions valve
actuator

2 positions valve actuator Motion detect + dehumidification

See Appendix B for relay pack wiring.

Door and motion detect +
dehumidification

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

VT8350U5X00B HEATING/COOLING 4-PIPE FAN COIL UNIT WITH ECM FAN, TRI-STATE FLOATING VALVES
AND DEHUMIDIFICATION SEQUENCE FOR LOW VOLTAGE

65

ECM Fan

VT8350

Onboard
PIR Sensor

Airow Direction

Cooling Coil

TRI-STATE

COOLING VALVE

Heating Coil

TRI-STATE

HEATING VALVE

AND / OR

OR*

Wired Remote
PIR Sensor

Configuration
Parameter Name

Fan control ECM
Fan menu L-M-H-A
Control Type Floating
UI16 Motion NO or Motion NC (remote PIR sensor only)
UI17 Door Dry
Pipe no. 4
Seq. operation Cool / Heat

* Wired remote sensor cannot be used at the same time as wireless remote sensor(s).

Wireless Remote
PIR Sensor

Configuration Settings

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028-0444-06 November 2018

66

VT8350

BO2 - Fan L

BO3 - Fan M

RC (24 Vac)

BO4 - Fan H

C (Common)

BO1-Close Ht Vlve

1 2 3 4 5 6

1 5

13 14 15 16 17 18

13 14 15 16 17 18

Floating Control + ECM Fan

RH

- Close Cool V

BO8 - Aux Heat

UO9

UO11 - Open Cool V

UO12 - Open Heat V

7 8 9 10 11 12

7 10 1

19 20 21 22 23 24

19 20 21 22 23 24

UO10 - ECM 0-10 Vdc

HEATING VALVE

Close Open Com.

COOLING VALVE

Close Open Com.

FCU Low-voltage

TERMINAL BLOCK

COMM ON

24 VAC

FAN START

(OPTIONAL)

UI 19

UI 20 - RS

Common

BACnet +

BACnet -

BACnet REF

UI 16

UI 17

Common

UI22 - SS

(-)

(+)

ECM Fan

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%.

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

ECM Fan Operation

System Off

UO12 = 0Vdc and BO4 (fan start) is not energized

System On: (Fan modes)

• Low: UO12 = 2.2 Vdc (adjustable from configuration menu) and BO4 “fan start” is energized.

• Med: UO12 = 6.0 Vdc (adjustable from configuration menu) and BO4 “fan start” is energized.

• High: UO12 = 8.6 Vdc (adjustable from configuration menu) and BO4 “fan start” is energized.

• Auto: When there is no demand, UO12 = 0 Vdc and BO4

• “fan start”is not energized. On demand, system will modulate from “low” to “high” voltages (adjustable from configuration menu)
and BO4 “fan start” is energized.

Options

• Wireless adapter modules 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.

67

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

68

VT8350U5X00B HEATING/COOLING 4-PIPE FAN COIL UNIT WITH ECM FAN, 0-10 VDC ANALOG VALVES
AND DEHUMIDIFICATION SEQUENCE FOR LOW VOLTAGE

ECM Fan

Airow Direction

VT8350

Cooling Coil

ANALOG

COOLING VALVE

Heating Coil

ANALOG

HEATING VALVE

Configuration
Parameter Name

Fan cotrol ECM
Control type Analog
Fan menu L-M-H-A
Pipe no. 4
Seq. operation Cool / Heat

Onboard
PIR Sensor

Configuration Settings

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

69

VT8350

BO2 - Fan L

1 2 3 4 5 6

1 2 3 4 5 6

13 14 15 16 17 18

13

BO3 - Fan M

BO4 - Fan H

RC (24 Vac)

C (Common)

Modulating Control + ECM Fan

RH

7 8 9 10 11 12

7 9 1

CM

UO10 - E

BO8 - Aux Heat

UO11 - Analog Heat

UO12 - Analog Cool

19 20 21 22 23 24

HEATING VALVE

0-10 v 24 v Com.

COOLING VALVE

0-10 v 24 v Com.

FCU Low-voltage

TERMINAL BLOCK

COMM ON

24 VAC

FAN START

(OPTIONAL)

UI 19

UI 20 - RS

Common

BACnet +

BACnet -

BACnet REF

UI 16

UI 17

Common

UI22 - SS

(-)

(+)

ECM Fan

Sequence of Operation and Wiring

Occupied Mode

Setpoints revert to those defined by occupied cooling and heating. The changeover sensor sends supply air temperature to controller.

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. Dehumidification enabled.

On Call for Heat

Heating valve opens to maintain room temperature. Cooling valve closes. Dehumidification disabled.

On Demand for Dehumidification

Dehumidification is achieved via cooling coil using heating coil for 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.

Reheat disabled if cooling demand reaches 100%.

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028-0444-06 November 2018

70

ECM Fan Operation

System Off

UO12 = 0Vdc and BO4 (fan start) is not energized

System On: (Fan modes)

• Low: UO12 = 2.2 Vdc (adjustable from configuration menu) and BO4 “fan start” is energized.

• Med: UO12 = 6.0 Vdc (adjustable from configuration menu) and BO4 “fan start” is energized.

• High: UO12 = 8.6 Vdc (adjustable from configuration menu) and BO4 “fan start” is energized.

• Auto: When there is no demand, UO12 = 0 Vdc and BO4 “fan start”is not energized. On demand, system will modulate from “low”
to “high” voltages (adjustable from configuration menu) and BO4 “fan start” is energized.

Options

• Wireless adapter modules are available. (see Appendix B for network wiring).

• Remote wall mount or duct sensor ready.

• Can be configured for 2-pipe systems.

• 3 universal inputs can be used and configured for advanced functionality as required by the application.

• Universal input can be configured for changeover sensor.

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

VT8350U5X00B HEATING/COOLING 4-PIPE FAN COIL UNIT WITH ECM FAN, 2-POSITION VALVES AND
DEHUMIDIFICATION SEQUENCE FOR LOW VOLTAGE

71

ECM Fan

VT8350

Airow Direction

Cooling Coil

2 POSITION

COOLING VALVE

Heating Coil

2 POSITION

HEATING VALVE

Configuration
Parameter Name

Fan control ECM
Fan menu L-M-H-A
Control Type On/Off
Pipe no. 4
Seq. operation Cool/Heat

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

Configuration Settings

72

VT8350

BO2 - Fan L

BO3 - Fan M

RC (24 Vac)

BO4 - Fan H

BO1-Close Ht V

1 2 3 4 5 6

13 14 15 16 17 18

C (Common)

On / Off Control + ECM Fan

RH

- NC Cool V

UO9

BO8 - Aux Heat

7 8 9 10 11 12

UO11 - NO Cool V

UO12 - NO Heat V

UO10 - ECM 0-10 Vdc

19 20 21 22 23 24

HEATING VALVE

IF NC IF NO Com.

OR OR

COOLING VALVE

IF NC IF NO Com.

FCU Low-voltage

TERMINAL BLOCK

COMM ON

24 VAC

FAN START

(OPTIONAL)

UI 19

UI 20 - RS

Common

BACnet +

BACnet -

BACnet REF

UI 16

UI 17

Common

UI22 - SS

(-)

(+)

ECM Fan

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. Dehumidification enabled.

On Call for Heat

Heating valve opens to maintain room temperature. Cooling valve closes. Dehumidification disabled.

On Demand for Dehumidification

Dehumidification is achieved via cooling coil using heating coil for 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.

Reheat disabled if cooling demand reaches 100%.

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028-0444-06 November 2018

73

ECM Fan Operation

System Off

UO12 = 0Vdc and BO4 (fan start) is not energized

System On: (Fan modes)

• Low: UO12 = 2.2 Vdc (adjustable from configuration menu) and BO4 “fan start” is energized.

• Med: UO12 = 6.0 Vdc (adjustable from configuration menu) and BO4 “fan start” is energized.

• High: UO12 = 8.6 Vdc (adjustable from configuration menu) and BO4 “fan start” is energized.

• Auto: When there is no demand, UO12 = 0 Vdc and BO4 “fan start”is not energized. On demand, system will modulate from “low”
to “high” voltages (adjustable from configuration menu) and BO4 “fan start” is energized.

Options

• Wireless adapter modules are available. (see Appendix B for network wiring).

• Models available with factory installed PIR sensor.

• Remote wall mount or duct sensor ready.

• Can be configured for 2-pipe systems.

• 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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028-0444-06 November 2018

74

VT83X0U5X00B COOLING WITH REHEAT 4-PIPE FAN COIL UNIT WITH ECM FAN, ANALOG COOLING VALVE
AND N.C ON/OFF HEATING VALVE FOR LOW VOLTAGE

VT83X0

ECM Fan

Airow Direction

Cooling Coil

ANALOG

COOLING VALVE

Heating Coil

2 POSITION

HEATING VALVE

Configuration
Parameter Name

Fan control ECM
Control type Analog
Fan menu L-M-H-A
BO8 Out Time 0 = 15 Minute
BO8 AuxOut Reheat
Pipe no. 4
Seq. operation Cool-rht

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028-0444-06 November 2018

Configuration Settings

75

ECM Fan

SE83X0

BO2 - Fan L

1 2 3 4 5 6

13 14 15 16 17 18

13 14 15 16 17 18 19 20 21 22 23 24

BO3 - Fan M

BO4 - Fan H

RC (24 Vac)

Mod. & On / Off Control + ECM Fan

RH

C (Common)

V

BO8 - Aux Heat

- Analog Heat

UO11

UO12 - Analog Cool

7 8 9 10 11 12

19 20 21 22 23 24

HEATING VALVE

NC Com.

COOLING VALVE

.

FCU Low-voltage

TERMINAL BLOCK

COMM ON

24 VAC

FAN START

(OPTIONAL)

UI 19

UI 20 - RS

Common

BACnet +

BACnet -

BACnet REF

UI 16

UI 17

Common

UI22 - SS

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

Analog valve starts modulating based on cooling demand.

On Call for Heat

Heating valve opens.

(−)

(+)

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76

Options

• Wireless adapter modules are available. (see Appendix B for network wiring).

• Remote wall mount or duct sensor ready.

• Can be configured for 2-pipe systems.

• Can be configured to single or two speed fan.

• 3 universal inputs can be used and configured for advanced functionality as required by the application.

ECM Fan Operation

System Off

UO12 = 0Vdc and BO4 (fan start) is not energized

System On: (Fan modes)

• Low: UO12 = 2.2 Vdc (adjustable from configuration menu) and BO4 “fan start” is energized.

• Med: UO12 = 6.0 Vdc (adjustable from configuration menu) and BO4 “fan start” is energized.

• High: UO12 = 8.6 Vdc (adjustable from configuration menu) and BO4 “fan start” is energized.

• Auto: When there is no demand, UO12 = 0 Vdc and BO4 “fan start”is not energized. On demand, system will modulate from “low”
to “high” voltages (adjustable from configuration menu) and BO4 “fan start” is energized.

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028-0444-06 November 2018

VT83X0U5X00B COOLING ONLY 2-PIPE FAN COIL UNIT WITH ECM FAN AND 0-10VDC ANALOG COOLING
VALVE FOR LOW VOLTAGE

77

VT83X0

ECM Fan

Airow Direction

Cooling Coil

ANALOG

COOLING VALVE

Configuration
Parameter Name

Fan control ECM
Control type Analog
Fan menu L-M-H-A
Pipe no. 2
Seq. operation Cool only

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Configuration Settings

78

VT83X0

RC (24 Vac)

BO4 - Fan H

C (Common)

1 2 3 4 5 6

13 14 15 16 17 18

Modulating Control + ECM Fan

RH

- Analog Heat

BO8 - Aux Heat

7 8 9 10 11 12

UO11

UO12 - Analog Cool

UO10 - ECM 0-10 Vdc

19 20 21 22 23 24

COOLING VALVE

0-10 V 24V Com.

FCU Low-voltage

TERMINAL BLOCK

COMM ON

24 VAC

FAN START

(OPTIONAL)

UI 193

UI 20 - RS

Common

BACnet +

BACnet -

BACnet REF

UI 16

UI 17

Common

UI22 - SS

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

Analog valve modulates allowing cool air to flow to reach setpoint.

On Call for Heat

Valve closes.

(-)

(+)

ECM Fan

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79

Options

• Wireless adapter modules are available. (see Appendix B for network wiring).

• Remote wall mount or duct sensor ready.

• Can be configured for 4-pipe systems.

• 3 universal inputs can be used and configured for advanced functionality as required by the application.

• Can be configured to two or three speed fan.

ECM Fan Operation

System Off

UO12 = 0Vdc and BO4 (fan start) is not energized

System On: (Fan modes)

• Low: UO12 = 2.2 Vdc (adjustable from configuration menu) and BO4 “fan start” is energized.

• Med: UO12 = 6.0 Vdc (adjustable from configuration menu) and BO4 “fan start” is energized.

• High: UO12 = 8.6 Vdc (adjustable from configuration menu) and BO4 “fan start” is energized.

• Auto: When there is no demand, UO12 = 0 Vdc and BO4 “fan start”is not energized. On demand, system will modulate from “low”
to “high” voltages (adjustable from configuration menu) and BO4 “fan start” is energized.

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028-0444-06 November 2018

80

VT83X0U5X00B COOLING WITH REHEAT 2-PIPE FAN COIL UNIT WITH ECM FAN, 2-POSITION VALVE AND
ELECTRIC REHEAT FOR LOW VOLTAGE

ECM Fan

VT83X0

Airow Direction

Cooling Coil

2 POSITION

COOLING VALVE

Heating

ON / OFF DUCT

HEATER

Configuration
Parameter Name

Fan control ECM
Fan menu L-M-H-A
Control Type On/Off
BO8 Out Time 0 = 15 Minute
BO8 AuxOut Reheat
Pipe no. 2
Seq. operation Cool-rht

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Configuration Settings

81

VT83X0

BO2 - Fan L

1 2 3 4 5 6

1 2 3 4 5 6

13 14 15 16 17 18

13 14 15 16 17 18

BO3 - Fan M

BO4 - Fan H

RC (24 Vac)

C (Common)

On / Off Control + ECM Fan

RH

Close Cool V

BO8 - Aux Heat

UO9 -

UO11 - Open Cool V

UO12 - Open Heat V

UO10 - Close Heat V

7 8 9 10 11 12

7 8 9 10 11 12

19 20 21 22 23 24

19 20 21 22 23 24

COOLING VALVE

S

L

IF NC IF NO Com.

OR

FCU Low-voltage

TERMINAL BLOCK

COMM ON

24 VAC

FAN START

(Optional)

UI 19

UI 20 - RS

Common

BACnet +

BACnet -

BACnet REF

UI 16

UI 17

Common

UI22 - SS

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. Electric heat stays Off.

On Call for Heat

Valve closes. Electric heat activates.

(-)

(+)

ECM Fan

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82

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 4-pipe systems.

• 3 universal inputs can be used and configured for advanced functionality as required by the application.

Can be configured to single or two speed fan.

ECM Fan Operation

System Off

UO12 = 0Vdc and BO4 (fan start) is not energized

System On: (Fan modes)

• Low: UO12 = 2.2 Vdc (adjustable from configuration menu) and BO4 “fan start” is energized.

• Med: UO12 = 6.0 Vdc (adjustable from configuration menu) and BO4 “fan start” is energized.

• High: UO12 = 8.6 Vdc (adjustable from configuration menu) and BO4 “fan start” is energized.

• Auto: When there is no demand, UO12 = 0 Vdc and BO4 “fan start”is not energized. On demand, system will modulate from “low”
to “high” voltages (adjustable from configuration menu) and BO4 “fan start” is energized.

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028-0444-06 November 2018

VT83 MIX VOLTAGE

84

VT83

3-SPEED MIX VOLTAGE APPLICATIONS

System Fan Cooling Heating Other

4 pipes 3-speed 120 Vac 0-10 Vdc valve actuator 0-10 Vdc valve actuator need the optional SC1300 relay box

4 pipes 3-speed 240 Vac 0-10 Vdc valve actuator 0-10 Vdc valve actuator need the optional SC2300 relay box

4 pipes 3-speed 120 Vac Tri-state valve actuator Tri-state valve actuator need the optional SC1300 relay box

4 pipes 3-speed 240 Vac Tri-state valve actuator Tri-state valve actuator need the optional SC230 0 relay box

See Appendix B for relay pack wiring.

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028-0444-06 November 2018

MIX VOLTAGE VT8350U5X00B AND SC1300 120 VDC RELAY HEATING/COOLING 4-PIPE FAN COIL
UNIT WITH HIGH VOLTAGE 3-SPEED FAN, AND 0-10 VDC ANALOG VALVES AND DEHUMIDIFICATION
SEQUENCE FOR LOW VOLTAGE

85

3-Speed Fan

VT8300

Airow Direction

Cooling Coil

ANALOG

COOLING VALVE

Heating Coil

ANALOG

HEATING VALVE

SC1300

Power supply
120 vac

Configuration
Parameter Name

Fan control 3 speed
Fan menu L-M-H-A
Pipe no. 4
Seq. operation Cool / Heat

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028-0444-06 November 2018

Configuration Settings

86

1 2 3 4 5 6

13 14 15 16 17 18

7 8 9 10 11 12

19 20 21 22 23 24

1 2 3 4 5 6

13 14 15 16 17 18

7 8 9 10 11 12

19 20 21 22 23 24

VT8300

BO2 - Fan L

BO3 - Fan M

BO4 - Fan H

RC (24 Vac)

C (Common)

RH

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

Mix Voltage 120 volts

SC1300

FAN HI

FAN MED

FAN LO

COMM ON

High Voltage Fan

Power supply
120 Vac

COOLING VALVE

0-10v 24v Com.

HEATING VALVE

0-10v 24v Com.

Sequence of Operation and Wiring

Occupied Mode

Setpoints revert to those defined by occupied cooling and
heating. The changeover sensor sends supply air temperature to
controller.

Stand-by Mode (only available when PIR motion detector
sensor is used)

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

On Demand for Dehumidification

Dehumidification is achieved via cooling coil using heating coil
for 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.

Reheat disabled if cooling demand reaches 100%.

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. Dehumidification enabled.

On Call for Heat

Heating valve opens to maintain room temperature. Cooling valve
closes. Dehumidification disabled.

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028-0444-06 November 2018

Options

• Wireless adapter modules are available. (see Appendix B for
network wiring).

• Remote wall mount or duct sensor ready.

• Can be configured for 2-pipe systems.

• 3 universal inputs can be used and configured for advanced
functionality as required by the application.

• Universal input can be configured for changeover sensor.

MIX VOLTAGE VT8350U5X00B AND SC2300 240 VDC RELAY HEATING/COOLING 4-PIPE FAN COIL
UNIT WITH HIGH VOLTAGE 3-SPEED FAN, AND 0-10 VDC ANALOG VALVES AND DEHUMIDIFICATION
SEQUENCE FOR LOW VOLTAGE

87

3-Speed Fan

VT8300

Airow Direction

Cooling Coil

ANALOG

COOLING VALVE

Heating Coil

ANALOG

HEATING VALVE

SC2300

Power supply
240 vac

Configuration
Parameter Name

Fan control 3 speed
Fan menu L-M-H-A
Pipe no. 4
Seq. operation Cool / Heat

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028-0444-06 November 2018

Configuration Settings

88

1 2 3 4 5 6

13 14 15 16 17 18

7 8 9 10 11 12

19 20 21 22 23 24

1 2 3 4 5 6

13 14 15 16 17 18

7 8 9 10 11 12

19 20 21 22 23 24

VT8300

BO2 - Fan L

BO3 - Fan M

BO4 - Fan H

RC (24 Vac)

C (Common)

RH

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

Mix Voltage 240 volts

SC2300

FAN HI

FAN MED

FAN LO

COMM ON

High Voltage Fan

Power supply
240 Vac

COOLING VALVE

0-10v 24v Com.

HEATING VALVE

0-10v 24v Com.

Sequence of Operation and Wiring

Occupied Mode

Setpoints revert to those defined by occupied cooling and
heating. The changeover sensor sends supply air temperature to
controller.

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. Dehumidification enabled.

On Call for Heat

Heating valve opens to maintain room temperature. Cooling valve
closes. Dehumidification disabled.

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028-0444-06 November 2018

On Demand for Dehumidification

Dehumidification is achieved via cooling coil using heating coil
for 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.

Reheat disabled if cooling demand reaches 100%.

Options

• Wireless adapter modules are available. (see Appendix B for
network wiring).

• Remote wall mount or duct sensor ready.

• Can be configured for 2-pipe systems.

• 3 universal inputs can be used and configured for advanced
functionality as required by the application.

• Universal input can be configured for changeover sensor.

MIX VOLTAGE VT8350U5X00B AND SC1300 120 VDC RELAY HEATING/COOLING 4-PIPE FAN COIL UNIT
WITH HIGH VOLTAGE 3-SPEED FAN, TRI-STATE FLOATING VALVES AND DEHUMIDIFICATION SEQUENCE
FOR LOW VOLTAGE

89

3 Speed Fan

VT8350

Airow Direction

Cooling Coil

TRI-STATE

FLOATING VALVE

Heating Coil

TRI-STATE

FLOATING VALVE

SC1300

Power supply
120 vac

Configuration
Parameter Name

Fan control 3 speed
Fan menu L-M-H-A
Control Type Floating
Pipe no. 4
Seq. operation Cool / Heat

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028-0444-06 November 2018

Configuration Settings

90

1 2 3 4 5 6

13 14 15 16 17 18

7 8 9 10 11 12

19 20 21 22 23 24

1 2 3 4 5 6

13 14 15 16 17 18

7 8 9 10 11 12

19 20 21 22 23 24

VT8350

BO2 - Fan L

BO3 - Fan M

BO4 - Fan H

RC (24 Vac)

C (Common)

RH

BO8 - Aux Heat

UO9 -

Close Cool V

UO10 - Close Heat V

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

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%.
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.

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028-0444-06 November 2018

Options

• Wireless adapter modules 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.

MIX VOLTAGE VT8350U5X00B AND SC2300 240 VDC RELAY HEATING/COOLING 4-PIPE FAN COIL UNIT
WITH HIGH VOLTAGE 3-SPEED FAN, TRI-STATE FLOATING VALVES AND DEHUMIDIFICATION SEQUENCE
FOR LOW VOLTAGE

91

3 Speed High Voltage Fan

VT8350

Airow Direction

Cooling Coil

TRI-STATE

FLOATING VALVE

Heating Coil

TRI-STATE

FLOATING VALVE

SC2300

Power supply
240 vac

Configuration
Parameter Name

Fan control 3 speed
Fan menu L-M-H-A
Control Type Floating
Pipe no. 4
Seq. operation Cool / Heat

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028-0444-06 November 2018

Configuration Settings

92

1 2 3 4 5 6

13 14 15 16 17 18

7 8 9 10 11 12

19 20 21 22 23 24

1 2 3 4 5 6

13 14 15 16 17 18

7 8 9 10 11 12

19 20 21 22 23 24

VT8350

BO2 - Fan L

BO3 - Fan M

BO4 - Fan H

RC (24 Vac)

C (Common)

RH

BO8 - Aux Heat

UO9 -

Close Cool V

UO10 - Close Heat V

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

SC2300

FAN HI

FAN MED

FAN LO

COMM ON

High Voltage Fan

Power supply
240 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

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%.
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.

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028-0444-06 November 2018

Options

• Wireless adapter modules 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.

APPENDIX A - SE8000 PIR SENSOR DETAILS

Typical Savings of 10-30%

Ener gy Usage (K Wh)

93

Energy Savings

PIR can maximize
your energy
saving from 10­30% by adjusting
temperature set
points in unoccupied
zones during
scheduled periods.

85
80

75
70

65
60
55

50
45

40
35

30
25
20

15
10

5
0

0 2 4 6 8 10 12 14 16 18 20 22 24

Time of Day (EST)

Typical Consumption PIR Thermostat Consumption Sa vings

50%

40%

Saving Percentage

30%

20%

10%

0%

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94

APPENDIX B - OPTIONAL NETWORK SET-UP

TYPICAL WIRING EXAMPLES FOR 3 SPEED FAN

TYPICAL WIRING EXAMPLES FOR ECM FAN

Brown - Fan Start
(Optional)

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95

Setpoints

e

Stand-by timer reset

Unoccupied timer reset

APPENDIX C - SCHEMATIC OF CONTROLLERS OCCUPANCY SEQUENCE OF OPERATION WITHOUT DOOR
SENSOR

26.5°C

Unoccupied cool

Stand-by cool

24.5°C
76°F

80°F

Occupied cool

Occupied heat

Stand-by heat

noccupied heat

Deadband

Movement detected

-

22°C
72°F

70°F

Deadband

Deadband

22°C

72°F

70°F

21°C 21°C

Stand-by

time

66°F

19°C

Unoccupied

time

62°F

16.5°C

Into Stand-by mode

-

Into Unoccupied

mode

Next movement

detected

Tim

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96

APPENDIX X - WIRELESS SENSORS

®

Wireless ZigBee

Fan Coil Room Controllers with SED Series ZigBee® Pro wireless switches can be used in stand-alone mode, or with integration
to a central management system, to allow for advanced functions such as central reservation and occupancy functions. Up to
ten different ZigBee motion sensors and switches (SED-WMS, SED-CMS, or SED-WDS) can be used with a VTR8300 or VT8300
Room Controller

Note that if a ZigBee wireless window switch is used, the VT8300 Room Controller cannot also use a remote PIR motion sensor,
whether wired or wireless. Using one or more wireless remote PIR motion sensors means that a wired PIR motion sensor cannot be
used, and vice versa.

The SED Series sensors are factory delivered with batteries and are ready to be installed, configured, and used right out of the
box. Due to the extremely small current consumption of the sensors, the expected battery life is approximately 10 years, which is
equivalent to the battery shelf life.

Model Selection

Window Switch Door Switch

Pro Motion Sensors

Wireless door switch SED-DOR-P-5045

Wireless window switch SED-WIN-P-5045

Wireless window and door
switch

Wireless window/door
sensor

Wireless ceiling mounted
motion sensor

Wireless wall mounted
motion sensor

Wireless motion/
temperature/humidity
sensor

Wireless water leakage
sensor

SED-WDS-P-5045

SED-WDC-G-5045

SED-CMS-P-5045

SED-WMS-P-5045

SED-MTH-G-5045

SED-WLS-G-5045

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97

Deployment

Placement of the Room Controller must be given consideration. It is recommended to install the Room Controller as close to a door
as possible (but not so as to be blocked by the door), or in an area with high occupant movement.

Ideally the Room Controller should be installed 5 feet (1.5 meters) above the floor surface to ensure maximum detection range is
achieved. As well, Room Controller placement should ensure the occupant crosses the lens beam in a perpendicular path within the
prescribed detection zone.

Example of Recommended Deployment

The below shows Room Controllers installed in ideal locations for two rooms.

The examination room shows one Room Controller installed adjacent to the door. In this area of the room, occupant traffic is high and
ensures the occupant will almost always cross the PIR detection path laterally and within the detection range.

The waiting room shows one Room Controller installed beside a door in the middle of the room. As shown in the diagram below,
occupant traffic is high in several areas of the room including the entrance, waiting room, access to the door and activity around the
reception desk. Moreover, for each case aforementioned, occupant movement almost always moves lateral to the PIR, which ensures
detection by the PIR, as well as respecting the PIR detection range of 20 feet (6 meters) at 140°, and 16 feet (5 meters) between 15°
to 30° laterally.

Recommended Installation

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018

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Example of Non-Recommended Deployment

The below shows four Room Controllers (two for each room) installed in non-ideal locations for the two rooms.

The examination room shows one Room Controller installed in a low traffic area near the door, and a second Room Controller installed
on the wall directly opposite the door. For the Room Controller installed in the corner wall, the PIR could be blocked by the opened
door, while occupant traffic cold also be minimal in this area of the room. For the second Room Controller installed opposite the door,
the PIR detection could fall outside the specified detection zone, while at the same time most occupant movement would be not be
lateral to the PIR, thereby not respecting optimal crossing patterns for PIR detection.

The waiting room shows one Room Controller installed in the corner of the room, and a second Room Controller installed beside the
reception area. For the Room Controller installed in the corner, the opening/closing of the door creates high probability that the
PIR would get blocked, and therefore, occupancy going undetected. For the Room Controller installed beside the reception area,
occupant traffic could fall outside the detection zone, and the receptionist would often be below the 5 foot recommended installation
height for the Room Controller.

Non-Recommended Installation

Viconics Technologies Inc. www.viconics.com [e-mail]

028-0444-06 November 2018