Viconics VT7600W Installation Guide

PIR Ready VT7600W Series

With & Without Local Schedule

Water Source Heat Pump

Terminal Equipment Controllers

Installation Guide

For Commercial HV AC Applications

May 3rd, 2012 / 028-035 5-R4

CONTENTS

Installation 2

Location 2
Installation 2

Theory of operation 3

Features overview 3

Model Chart 5

Network ready 5

Terminal, Identification and Function 6

Wiring 6
Screw terminal arrangement 7
Main outputs wiring 7

Typical applications 7

Remote sensor accessories 8

Configuring and Status Display Instructions 11

Status display 12

User Interface 13

User configuring instructions menu 13
Local keypad interface 14
Occupied setpoints adjustments 15

Installer Configuration Parameter Menu 22
Troubleshooting guide 32

All models 32

Specifications 34
Drawing & Dimensions 35

1 | PIR Ready VT76xxW 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.

2 | PIR Ready VT76xxW Series-Installation Guide

10. Insert each wire according to wiring diagram.

 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 wrong 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 / installer / 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.

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.

THEORY OF OPERATION

The VT7600 uses a Viconics proprietary adaptive logic algorithm to control the space
temperature. This algorithm controls the heating / 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 Terminal Equipment Controllers.

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

Features overview

 7 day schedule models, 2 or 4 events
 Built-in dehumidification control function with local ambient humidity sensing
 Selectable single or dual compressor stages
 Remote indoor averaging sensing capability
 Temperature averaging with 2, 3, 4, 9 or 16 sensors
 System mode lock out

3 | PIR Ready VT76xxW Series-Installation Guide

 Remote discharge air temperature sensor input for monitoring purpose
 Remote water temperature sensor input for monitoring purpose

 Lockable keypads for tamper proofing. No need for a separate guards

 Anti short cycle and minimum on/off run time protection. Reduces wear and

maximizes life span of mechanical equipment.

 2 configurable digital inputs for added flexibility. Each input can be configured as the

following:

 None: No function will be associated with the input
 Service: a backlit flashing Service alarm will be displayed on the Terminal

Equipment Controller LCD screen when the input is energized. It can be tied in
to the AC unit control card, which provides an alarm in case of malfunction.

 Filter: a backlit flashing Filter alarm will be displayed on the Terminal

Equipment Controller LCD screen when the input is energized. It can be tied to a
differential pressure switch that monitor filters

 Rem NSB: remote NSB timer clock input. Will disable the internal scheduling of

the Terminal Equipment Controller. The scheduling will now be set as per the
digital input. The menu part related to scheduling is disabled and no longer
accessible. It provides low cost setback operation via occupancy sensor or from
a dry contact

 RemOVR: temporary occupancy contact. Disables all override menu function of

the Terminal Equipment Controller. . The override function is now controlled by a
manual remote momentarily closed contact. When configured in this mode, the
input operates in a toggle mode.

 With this function enabled it is now possible to toggle between unoccupied &

occupied setpoints for the amount of time set by parameter (TOccTime)
temporary occupancy time.

 Fan lock: used in conjunction with a local air flow sensor connected to the input.

Locks out the Terminal Equipment Controller heating and cooling action and
displays a local alarm if no air flow is detected 10 seconds after the fan (G
terminal) is energized.

 Configurable smart fan operation saves energy during night mode
 Non volatile EEPROM memory prevents loss of parameters during power shortage
 Built in default profile set-up for easier start up and commissioning
 Configurable SPST output relay for lighting, exhaust fan or fresh air control
 6 hour typical reserve time for clock in case of power loss on scheduling models

4 | PIR Ready VT76xxW 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:

o VCM7600N5000B, Terminal Equipment Controller BACnet™ MS-TP®

communication adapter

o VCM7600N5000W Terminal Equipment Controller wireless Zigbee™

communication adapter

5 | PIR Ready VT76xxW Series-Installation Guide

TERMINAL, IDENTIFICATION AND FUNCTION

Water Source Heat Pump

Part Number

VT7652W

VT7600W

Schedule

Yes

No

Top left terminal block

Y2 X X

Y1 X X G X X RC X X C X X Top right terminal block

DEH X X

O/B X X

Bottom terminal block

Aux X X

DI1 X X

DI2 X X

RS X X

Scom X X

WS X X

MS X X

Wiring

6 | PIR Ready VT76xxW Series-Installation Guide

Screw terminal arrangement

VT7600W5X00(X)
Water Source Heat pump / Without Schedule

AU

D1

D2

RS

Scom

WS

MS

Y2

Y1 G RC

C

DEH

O/B

5 pole left top connector

2 pole left top connector

7 pole bottom connector

Main outputs wiring

Wiring notes:
Note 1: 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 2: The transformer of the unit provides power to the Terminal Equipment Controller

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

TYPICAL APPLICATIONS

7 | PIR Ready VT76xxW Series-Installation Guide

Remote sensor accessories

MODEL NO.

DESCRIPTION

S3010W1000

Wall mounted temperature sensor

S3020W1000

Wall mounted temperature sensor+override button and occupancy status

S2060A1000

Averaging temperature sensor

S2000D1000

Duct mounted temperature sensor

WIRING EXAMPLE OF SINGLE REMOTE ROOM SENSOR:

AU

D1

RS

Scom

C

D2

ScomRSScom

RS

C
DI

Aux

ScomRSScom

RS

OR

VT7600 Series

1x S3020W1000
Remote wiring 1 sensor
S2-1 = ON / S2-2 = ON

S3010W1000
Remote wiring 1 sensor
S2-1 = ON / S2-2 = ON

Dip switch

setting for:

1 sensor

S2-1 = ON
S2-2 = ON

1

2

ON

Dip switch

setting for:

1 sensor

S2-1 = ON
S2-2 = ON

Remote mount temperature sensors use 10K NTC thermistor.

This sensor can be used for:

 Various averaging combinations
 Optional occupancy led
 Optional override key

Wall mounted sensor

8 | PIR Ready VT76xxW Series-Installation Guide

WIRING EXAMPLES OF 2 REMOTE ROOM SENSORS FOR AVERAGING APPLICATIONS:

WIRING EXAMPLES OF 3 REMOTE ROOM SENSORS FOR AVERAGING APPLICATIONS:

ºC

ºF

Kohm

ºC

ºF

Kohm

ºC

ºF

Kohm

ºC

ºF

Kohm

ºC

ºF

Kohm

-40

-40

324.3197

-20

-4

94.5149 0

32

32.1910

20

68

12.4601

40

104

5.3467

-39

-38

303.6427

-19

-2

89.2521 1

34

30.6120

21

70

11.9177

41

106

5.1373

-38

-36

284.4189

-18 0 84.3147 2

36

29.1197

22

72

11.4018

42

108

4.9373

-37

-35

266.5373

-17 1 79.6808 3

37

27.7088

23

73

10.9112

43

109

4.7460

-36

-33

249.8958

-16 3 75.3299 4

39

26.3744

24

75

10.4443

44

111

4.5631

-35

-31

234.4009

-15 5 71.2430 5

41

25.1119

25

77

10.0000

45

113

4.3881

-34

-29

219.9666

-14 7 67.4028 6

43

23.9172

26

79

9.5754

46

115

4.2208

-33

-27

206.5140

-13 9 63.7928 7

45

22.7861

27

81

9.1711

47

117

4.0607

-32

-26

193.9703

-12

10

60.3980 8

46

21.7151

28

82

8.7860

48

118

3.9074

-31

-24

182.2686

-11

12

57.2044 9

48

20.7004

29

84

8.4190

49

120

3.7607

-30

-22

171.3474

-10

14

54.1988

10

50

19.7390

30

86

8.0694

50

122

3.6202

-29

-20

161.1499

-9

16

51.3692

11

52

18.8277

31

88

7.7360

51

124

3.4857

Notes for averaging applications:

 S3010W1000 and S3020W1000

can be mixed matched.

 S3010W1000 and S3020W1000

are to be wired in parallel.

 Respect the dip switch setting in

each remote sensor.

AU

D1

RS

Scom

C

D2

ScomRSScom

RS

C
DI

Aux

ScomRSScom

RS

C
DI

Aux

AU

D1

RS

Scom

C

D2

ScomRSScom

RS

ScomRSScom

RS

C

DI

Aux

VT7600 Series

2x S3020W1000
Remote wiring 2 sensors
S2-1 = OFF / S2-2 = ON

AU

D1

RS

Scom

C

D2

ScomRSScom

RS

ScomRSScom

RS

2x S3010W1000
Remote wiring 2 sensors
S2-1 = OFF / S2-2 =

VT7600 Series

VT7600 Series

1x S3010W1000 and 1x S3020W1000
Remote wiring 2 sensors
S2-1 = OFF / S2-2 = ON

Dip switch

setting for:

2 sensors

S2-1 = OFF
S2-2 = ON

Temperature vs. resistance chart for 10 Kohm NTC thermistor

9 | PIR Ready VT76xxW Series-Installation Guide

-28

-18

151.6239

-8

18

48.7042

12

54

17.9636

32

90

7.4182

52

126

3.3568

-27

-17

142.7211

-7

19

46.1933

13

55

17.1440

33

91

7.1150

53

127

3.2333

-26

-15

134.3971

-6

21

43.8268

14

57

16.3665

34

93

6.8259

54

129

3.1150

-25

-13

126.6109

-5

23

41.5956

15

59

15.6286

35

95

6.5499

55

131

3.0016

-24

-11

119.3244

-4

25

39.4921

16

61

14.9280

36

97

6.2866

56

133

2.8928

-23

-9

112.5028

-3

27

37.5056

17

63

14.2629

37

99

6.0351

57

135

2.7886

-22

-8

106.1135

-2

28

35.6316

18

64

13.6310

38

100

5.7950

58

136

2.6886

-21

-6

100.1268

-1

30

33.8622

19

66

13.0307

39

102

5.5657

59

138

2.5926

1 2

ON

Location of dip

S3010W1000 remote wall mounted
temperature sensor, dip switch location

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 sensor

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.

 Mixed air temperature averaging sensor for economizer models with the sensor in the

mixing plenum.

10 | PIR Ready VT76xxW Series-Installation Guide

WIRING S2000D1000, S2060A1000 AND S2020E1000

Remote wiring 1 sensor Remote wiring 4 sensors

10 K

10 K

10 K

10 K

10 K

Scom

MS

Scom

OS

Scom

RS

or

or

ScomMSScom

OS

Scom

RS

or

or

(

Schedule

set? Y/N

Sys mode

set? Y/N

Clock

set? Y/N

Temperat

set? Y/N

Schedule

hold Y/N

Exit

menu Y/N

Unocc HT

set? Y/N

°F/°C

set? Y/N

Heating

set? Y/N

Unocc CL

set? Y/N

Cooling

set? Y/N

°C

°F

Exit?

Y/N

Temperature

Temperature

Temperature

Temperature

MENU

12/24hrs

set? Y/N

12 / 24

Time

set? Y/N

Time

Day

set? Y/N

Day

Fan mode

set? Y/N

On

Smart

Auto

Sunday

set? Y/N

Saturday

set? Y/N

Friday

set? Y/N

Thursday

set? Y/N

Wednesda

set? Y/N

Tuesday

set? Y/N

Monday

set? Y/N

Exit?

Y/N

Occupied

day? Y/N

Occupied

12:00 pm

Time

Unoccup

12:00 pm

Time

Occupied

day? Y/N

Occupied

12:00 pm

Time

Unoccup

12:00 pm

Time

Occupied

day? Y/N

Occupied

12:00 pm

Time

Unoccup

12:00 pm

Time

Occupied

day? Y/N

Occupied

12:00 pm

Time

Unoccup

12:00 pm

Time

Occupied

day? Y/N

Occupied

12:00 pm

Time

Unoccup

12:00 pm

Time

Occupied

day? Y/N

Occupied

12:00 pm

Time

Unoccup

12:00 pm

Time

Occupied

day? Y/N

Occupied

12:00 pm

Time

Unoccup

12:00 pm

Time

Resume

Occ Hold

Uno Hold

Exit?

Y/N

off

heat

cool

auto

Override

schd Y/N

Cancel

ovrd Y/N

If status is:

Unoccupied

If status is:

Temporary Occupied Time,

Appears on stand-alone
models only

User menu flow chart:

NOTE: Prompts may not all be present depending on model selected

CONFIGURING AND STATUS DISPLAY INSTRUCTIONS

11 | PIR Ready VT76xxW Series-Installation Guide