Viconics VT7600E Series Manuel utilisateur

1 | PIR Ready VT7600 Series-Installation Guide

CONTENTS

Installation 2

Location 2

Installation 2

Theory of Operation 4

Features overview 4

Model Chart 5

Network ready 5

Terminal, Identification and Function 6

Screw terminal arrangement and wiring 6

Typical Applications 7

Main outputs wiring 7

Remote sensor accessories 8

Configuring and Status Display Instructions 9

Status display 9

User interface 11

User configuring instructions menu 11

Local keypad interface 11

Fresh Air Damper Control Sequences 29

Economizer Control Mode Only 29

Economizer Mode and Fresh Air Measurement Station 30

Economizer Mode and CO2 Level Control 31

Economizer Mode, CO2 Level Control and Fresh Air Measurement Station 32

Specifications 33

Drawing & Dimensions 34

VT7600E Series

RTU Terminal Equipment Controller with IAQ

Control

Installation Guide

For Commercial HVAC Applications

January 17th. 2012 / 028-0363-R1

2 | PIR Ready VT7600 Series-Installation Guide

INSTALLATION

Remove the security screw on the bottom of

Terminal Equipment Controller cover.

Open unit by pulling on the bottom

side of Terminal Equipment

Controller (fig. 1).

Remove wiring terminals from sticker.

Please read the FCC ID and IC label

installed in the cover upon removal of

cover for the wireless products.

Location

1. Should not be installed on an outside

wall.

2. Must be installed away from any

direct heat source.

3. Should not be installed near an

air discharge grill.

4. Should not be affected by direct

sun radiation.

5. Nothing should restrict vertical

air circulation to the Terminal

Equipment Controller.

Installation

1. Swing open the Terminal

Equipment Controller PCB to

the left by pressing the PCB

locking tabs (fig. 2).

2. Pull out cables 6” out from the

wall.

3. Wall surface must be flat and

clean.

4. Insert cable in the central hole

of the base.

5. Align the base and mark the

location of the two mounting

holes on the wall. Install base in

the proper orientation. Arrow on

base should be facing up.

6. Install anchors in the wall.

7. Insert screws in mounting holes

on each side of the base (fig. 2).

8. Gently swing back the circuit

board on the base and push on

it until the tabs lock it.

9. Strip each wire 1/4 inch from

end.

3 | PIR Ready VT7600 Series-Installation Guide

10. Insert each wire according to wiring diagram.

11. Gently push excess wiring back into hole (fig. 3).

12. Re-Install wiring terminals in their correct locations (fig. 3).

13. Re-install the cover (top side first) and gently push extra wire length back into

the hole in the wall.

14. Install security screw.

When replacing an existing Terminal Equipment Controller, label the

wires before removal of the Terminal Equipment Controller.

Electronic controls are static sensitive devices. Discharge yourself

properly before manipulating and installing the Terminal Equipment

Controller.

A short circuit or improper wiring may permanently damage the Terminal

Equipment Controller or the equipment.

All VT7000 series Terminal Equipment Controllers are designed for use

as operating controls only and are not safety devices. These instruments

have undergone rigorous tests and verification prior to shipping to ensure

proper and reliable operation in the field. Whenever a control failure

could lead to personal injury and or loss of property, it becomes the

responsibility of the user or installer or electrical system designer to

incorporate safety devices (such as relays, flow switch, thermal

protections, etc…) and or an alarm system to protect the entire system

against such catastrophic failures. Tampering with the devices or

unintended application of the devices will result in a void of warranty.

4 | PIR Ready VT7600 Series-Installation Guide

THEORY OF OPERATION

The VT76X6E series uses a Viconics proprietary adaptive logic algorithm to control the

space temperature. This algorithm controls the heating or air conditioning system to

minimize overshoot while still providing comfort. It provides exceptional accuracy due to

its unique PI time proportioning control algorithm, which virtually eliminates temperature

offset associated with traditional, differential-based On-Off thermostats.

Fig.2 - On-Off mechanical control vs. PI electronic control.

Features overview

7 day schedule models, 2 or 4 events.

C02control logic based on fresh air volume or fresh air damper position.

Fresh air damper output for building CO2level control.

Gas, oil or electric system compatibility.

Remote outdoor sensing capability for added flexibility.

- System mode heating and cooling lockout.

Remote discharge air sensor input for monitoring and control purpose.

- System efficiency feedback.

- Discharge high limit heating lockout.

- Discharge low limit cooling lockout.

Remote return air sensor input that replaces internal on board sensor.

- System efficiency feedback.

Password protected configuration menu and lockable keypads for security.

Automatic smart fan operation saves energy during unoccupied periods.

Non volatile EEPROM memory prevents loss of parameters during power shortage.

Configurable SPST output relay on scheduling models for lighting, exhaust fan or

fresh air control.

6 hour typical reserve time for clock in case of power loss.

Easy configuration and self-binding operation

Easy configuration without using any special software or additional tools.

Can be used as stand-alone or with BACnet™ MS-TP supervision controller for

monitoring purposed.

Truly scalable in terms of supported number of zones and RTU units.

5 | PIR Ready VT7600 Series-Installation Guide

MODEL CHART

Network ready

All Viconics VT7600 series Terminal Equipment Controllers are designed for stand-alone

(Network Ready) operation.

They can be fully integrated into your choice of automation systems using the available

communication adapter options.

If required, stand-alone (Network Ready) Terminal Equipment Controllers can be field

retrofitted with the following communication adapters:

oVCM7600N5000B, Terminal Equipment Controller BACnet™ MS-TP®

communication adapter.

oVCM7600N5000W Terminal Equipment Controller wireless Zigbee™

communication adapter.

6 | PIR Ready VT7600 Series-Installation Guide

TERMINAL,IDENTIFICATION AND FUNCTION

Terminal Use

Terminal

Identification

Description

1 –Cool 2

Output for cooling / compressor stage number 2.

2 –Cool 1

Output for cooling / compressor stage number 1.

3 - Fan

Output for the fan.

4 - 24 V ~ Hot

Power supply of thermostat, hot side (Delivered

from the RTU ).

5 - 0 V ~ Com

Power supply of thermostat, common side. Also

used as reference for the analog BPD output when

used (Delivered from the RTU).

6 –Heat Switch Leg

24 VAC switched leg for the heating stages.

If heating stages are part or RTU, install a

jumper across RC & RH.

If heating stages are part of separate

equipment with a different power supply, feed

external switched power leg through RH

without installing a jumper across RC & RH.

7 –Heat 1

Output for heating stage number 1.

8 –Heat 2

Output for heating stage number 2.

9 –Economizer

Output

0-10 VDC analog fresh air damper / economizer

output.

10 –Analog Heat

Output

0-10 VDC analog heating output.

11 –RS

Return air temperature sensor input. Used when

communication is lost. If remote sensor fails,

thermostat will use its on-board sensor to control.

12 –MS

Discharge air temperature sensor input

13 –AI1

AI1

0-10 VDC analog input for CO2transmitter

14 –Scom

Scom

Reference input for AI, RS, OS and DS

15 –OS

Outside air temperature sensor input

16 –AI2

AI2

0-10 VDC analog input for airflow transmitter

Screw terminal arrangement and wiring

AI1

SCom

AI2

Controller Terminals

7 | PIR Ready VT7600 Series-Installation Guide

TYPICAL APPLICATIONS

Main outputs wiring

Wiring notes:

Note 1: If the same power source is used for the heating stages, install jumper across RC &

RH. Maximum current is 2.0 amps.

Note 2: Economizer and all analog outputs and inputs use a half bridge rectifier. Reference

of the control signal is the common of the power supply of the Terminal Equipment

Controller. (Terminal C).

Note 3: Electromechanical contacts are to be used with the digital inputs. Electronic triacs

cannot be used as mean of switching for the input. The switched leg to the input for

the input to activate is terminal C (common)

Note 4: The transformer of the unit provides power to the t Terminal Equipment Controller

and the additional loads that will be wired to the Terminal Equipment Controller.

8 | PIR Ready VT7600 Series-Installation Guide

Remote sensor accessories

Model no.

Description

S2020E1000

Outdoor temperature sensor

S2060A1000

Averaging temperature sensor

S2000D1000

Duct mounted temperature sensor

Remote mount temperature sensors use 10K NTC thermistor.

Temperature vs. Resistance Chart for 10 Kohm NTC Thermistor

(R25°C = 10K±3% - B25/85°C = 3975K±1.5%)

S2000D1000; remote duct mounted temperature sensor c/w junction box.

This sensor can be used for:

Remote return air temperature

sensing with the sensor

mounted on the return air duct.

Outside air temperature sensing

with the sensor installed in the

fresh air plenum.

Supply air temperature sensing.

S2060A1000; remote averaging duct mounted temperature sensor c/w junction

box.

This sensor can be used for:

Remote averaging return air temperature sensing with the sensor mounted on

the return air duct.

Outside air temperature averaging sensing with the sensor installed in the

fresh air plenum.

Supply air temperature averaging sensor for economizer models with the

sensor in the mixing plenum.

ºC

ºF

Kohm

ºC

ºF

Kohm

ºC

ºF

Kohm

ºC

ºF

Kohm

ºC

ºF

Kohm

-40

324.3197

-20

-4

94.5149

32.1910

12.4601

104

5.3467

-39

-38

303.6427

-19

-2

89.2521

30.6120

11.9177

106

5.1373

-38

-36

284.4189

-18

84.3147

29.1197

11.4018

108

4.9373

-37

-35

266.5373

-17

79.6808

27.7088

10.9112

109

4.7460

-36

-33

249.8958

-16

75.3299

26.3744

10.4443

111

4.5631

-35

-31

234.4009

-15

71.2430

25.1119

10.0000

113

4.3881

-34

-29

219.9666

-14

67.4028

23.9172

9.5754

115

4.2208

-33

-27

206.5140

-13

63.7928

22.7861

9.1711

117

4.0607

-32

-26

193.9703

-12

60.3980

21.7151

8.7860

118

3.9074

-31

-24

182.2686

-11

57.2044

20.7004

8.4190

120

3.7607

-30

-22

171.3474

-10

54.1988

19.7390

8.0694

122

3.6202

-29

-20

161.1499

-9

51.3692

18.8277

7.7360

124

3.4857

-28

-18

151.6239

-8

48.7042

17.9636

7.4182

126

3.3568

-27

-17

142.7211

-7

46.1933

17.1440

7.1150

127

3.2333

-26

-15

134.3971

-6

43.8268

16.3665

6.8259

129

3.1150

-25

-13

126.6109

-5

41.5956

15.6286

6.5499

131

3.0016

-24

-11

119.3244

-4

39.4921

14.9280

6.2866

133

2.8928

-23

-9

112.5028

-3

37.5056

14.2629

6.0351

135

2.7886

-22

-8

106.1135

-2

35.6316

13.6310

100

5.7950

136

2.6886

-21

-6

100.1268

-1

33.8622

13.0307

102

5.5657

138

2.5926

Fig.10 –Remote Duct Mounted Temperature Sensor

9 | PIR Ready VT7600 Series-Installation Guide

S2020E1000; outdoor air temperature sensor

This sensor can be used for:

Outside air temperature sensing with the sensor installed directly exposed to

the elements.

Sensor uses a water resistant NEMA 4 ABS enclosure for outdoor

applications.

WIRING S2000D1000, S2060A1000 and S2020E1000

Remote wiring 1 sensor Remote wiring 4 sensors

CONFIGURING AND STATUS DISPLAY INSTRUCTIONS

Status display

The Terminal Equipment Controller features a two-line, eight-character display. There is a

low backlight level that is always active and can only be seen at night.

When left unattended, the Terminal Equipment Controller has an auto scrolling display

that shows the current status of the system.

Each item is scrolled sequentially with the back lighting in low level mode. Pressing any

key will cause the back lighting to come on to high level.

Manual scrolling of each menu item is achieved by pressing the Yes (scroll) key

repetitively. The last item viewed will be shown on the display for 30 seconds before

returning to automatic scrolling. Temperature is automatically updated when scrolling is

held.

Sequence of auto-scroll status display:

CLOCK

STATUS

SYSTEM

MODE

SCHEDULE

STATUS

OUTDOOR

TEMPERATURE

ALARMS

Monday

12:00

Sys mode

auto

Occupied

Outdoor

x.x °C or°F

Frost

Sys mode

off

Occupied

hold

SetClock

Sys mode

heat

Unoccup

DAS

alarm

Sys mode

cool

Alarm

High

CO2

10 K

Scom

(

10 | PIR Ready VT7600 Series-Installation Guide

Outdoor air temperature

Outdoor air temperature display is only enabled when outdoor air temperature sensor is

connected.

A maximum range status display of 50 °C ( 122 °F ) indicates a shorted sensor.

Associated functions, such as mode lockouts and economizer function are

automatically disabled.

A minimum range status -40 °C ( -40 °F ) is not displayed and indicates a opened

sensor or a sensor not connected. Associated functions, such as mode lockouts and

economizer function are automatically disabled.

Alarms

If alarms are detected, they will automatically be displayed at the end of the status

display scroll.

During an alarm message display, the back lit screen will light up at the same time as

the message and shut off during the rest of the status display.

Two alarms maximum can appear at any given time.

The priority for the alarms is as follows:

Sequence of manual-scroll status display:

Manual scroll of each menu item is achieved by pressing the Yes (scroll) key repetitively. The

last item viewed will be shown on the display for 30 seconds before returning to automatic

scrolling. Temperature is automatically updated when scrolling is held.

Clock

Status

System

Mode

Schedule

Status

Outdoor

Temperature

Alarms

(if detected)

Monday

Sys Mode

Occupied

Outdoor

Frost ON

12:00 AM

Off

xx.x °C or °F

SetClock

Sys Mode

Unoccupied

DAS Alarm

Auto

FA Alarm

Sys Mode

Override

High CO2

Cool

Sys Mode

Heat

Frost ON

Indicates that the heating is energized by the low limit frost protection room

temperature setpoint 5.6 °C (42 °F).

SetClock

Indicates that the clock needs to be reset. There has been a power failure

which has lasted longer than 6 hours.

DAS

Alarm

Indicates that the discharge air temperature is either too low or too high.

FA Alarm

Indicates that the Fresh Air Level is either too low or too high.

High CO2

Indicates that the CO2Level value is higher than the Max CO2parameter

value.

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