Viconics VZ7656F Installation Guide

VZ7656F1000W

Zigbee™ Wireless RTU Terminal Equipment

Controller with Modulating Heat

Installation Guide

For Commercial Zoning Systems

January 10th, 2012 / 028-0325-R1

CONTENTS

Installation 2

Location 2
Installation 2

Theory of Operation 3

Features overview 3

Wireless System Overview 5
Terminal, Identification and Function 6

Wiring 6
Screw terminal arrangement and wiring 7

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 12

Installer Configuration Parameter Menu 16
Specifications 27
Drawing & Dimensions 28

1 | VZ7656F1000W 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 | VZ7656F1000W 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 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.

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 VZ7656 series uses a Viconics proprietary adaptive logic algorithm to control the
space temperature. This algorithm controls the heating and 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.
 Supports up to 120 zones per system WITHOUT any network wires.
 Remote outdoor sensing capability for added flexibility.

- System mode heating and cooling lockout.

- Heat pump balance point settings.

- Zone perimeter reheat lockout.

3 | VZ7656F1000W Installation Guide

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

- System efficiency feedback.

- Discharge high limit heating lockout.

- Discharge low limit cooling lockout.

- Minimum supply air temperature.

 Remote return air sensor input for monitoring control.

- System efficiency feedback.

- Return high limit heating lockout.

- Return low limit cooling lockout.

- Communication lost control function.

 Password protected configuration menu and lockable keypads for security.
 A configurable digital input for added flexibility. The 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 monitors filters.

 RemNSB: 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.

 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.
 Built in 0 to 10 VDC by-pass damper / VFD output logic for static pressure control.

- Built in static pressure loop control.

- 0 to 5 VDC static pressure input.

Easy configuration and self-binding operation

 Easy configuration without using any special software or additional tools.
 Can be used as stand-alone or with supervision controller for monitoring purposed.
 Truly scalable in terms of supported number of zones and RTU units.

4 | VZ7656F1000W Installation Guide

WIRELESS SYSTEM OVERVIEW

Viconics VZ7260x5x00W Zone controllers are used in conjunction with the
VZ7656F1000W roof top controllers. Combined, they are designed for operating typical;
single or multistage RTU’s and their associated local zones. For example, a typical job
layout system may feature 3 RTU controllers and a total of 31 zones. This would bring to
total number of nodes (individual Com addresses) to 34. RTU 1 would have 10 zones
under its command, RTU 2 would have 10 zones under its command and RTU 3 would
have 11 zones under its command.

Typical Wireless Zoning System Installation

5 | VZ7656F1000W Installation Guide

TERMINAL, IDENTIFICATION AND FUNCTION

Terminal Use

Terminal

Identification

Description

1 – Cool 2

Y2

Output for cooling / compressor stage
number 2.

2 – Cool 1

Y1

Output for cooling / compressor stage
number 1.

3 - Fan

G

Output for the fan.

4 - 24 V ~ Hot

RC

Power supply of controller, hot side
(Delivered from the RTU).

5 - 0 V ~ Com

C

Power supply of controller, common side.
Also used as reference for the analog BPD
output when used (Delivered from the
RTU).

7 – Not Used

Not Used

Not Used

8- Auxiliary Output

AU

Auxiliary output used to disable economizer
damper minimum position or control lighting
during unoccupied periods.

9 – By-pass damper

BPD

Local analog 0 - 10 VDC by-pass damper /
VFD output.

10 – Analog Heat Output

AO

0-10 VDC analog heating output.

11 – Static pressure

SP

Local analog 0 – 5 VDC static pressure
input.

12 - DI1

DI

Configurable extra digital input. See
parameter section for more information.

13 - RS

RS

Return air temperature sensor input. If
sensor fails, controller will use the on-board
thermistor sensor to control if the
communication is lost.

14 - Scom

Scom

Reference input for DI 1, RS, OS & DS.

15 - OS

OS

Outside air temperature sensor input.

16 - DS

DS

Discharge air temperature sensor input.

Wiring

6 | VZ7656F1000W Installation Guide

Screw terminal arrangement and wiring

BPD

AO

SP

DI1

RS

SCom

OS

DS G Y1

Y2

Aux C RC

VZ7656F Controller Terminals

TYPICAL APPLICATIONS

Main outputs wiring

Wiring notes:

Note 1: If auxiliary output is used to toggle occupancy of the electronic control card inside

the equipment, configure the relay parameter (Aux cont) to the N.O. setting. A
second relay can be added for additional functionality of the occupancy output.

Note 2: 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.

7 | VZ7656F1000W Installation Guide

Remote sensor accessories

Model no.

Description

S2020E1000

Outdoor temperature sensor

S2060A1000

Averaging temperature sensor

S2000D1000

Duct mounted temperature sensor

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

-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

Fig.10 – Remote Duct Mounted Temperature Sensor

Remote mount temperature sensors use 10K NTC thermistor.

Temperature vs. Resistance Chart for 10 Kohm NTC Thermistor

(R

= 10K±3% - B

25°C

= 3975K±1.5%)

25/85°C

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.

8 | VZ7656F1000W Installation Guide

S2020E1000; outdoor air temperature sensor

WIRING S2000D1000, S2060A1000 and S2020E1000

Remote wiring 1 sensor Remote wiring 4 sensors

10 K

10 K

10 K

10 K

10 K

Scom

DS

Scom

OS

Scom

RS

or

or

Scom

DS

Scom

OS

Scom

RS

or

or

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.

CONFIGURING AND STATUS DISPLAY INSTRUCTIONS

Status display

The Terminal Equipment Controller features a two-line, eight­character display. There is a low level backlight 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 light to come on to high level.

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.

9 | VZ7656F1000W Installation Guide

Sequence of auto-scroll status display:

CLOCK

STATUS

SYSTEM

MODE

SCHEDULE

STATUS

OUTDOOR

TEMPERATURE

ALARMS

Monday

12:00

AM

Sys mode

auto

Occupied

Outdoor

x.x °C or°F

Service

Sys mode

off

Occupied

hold

DAS

Alarm

Sys mode

heat

Unoccup

SetClock

Sys mode

cool

Filter

Com

Lost

Clock Status

System

Mode

Schedule

Status

Outdoor

Temperature

Alarms

(if detected)

Monday

Sys Mode

Occupied

Outdoor

Service

12:00 AM

Off xx.x °C or °F

DAS Alrm

Sys Mode

Unoccupied

SetClock

Auto Filter

Sys Mode

Override

Comm Lost

Cool

Sys Mode

Heat

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.

10 | VZ7656F1000W Installation Guide

Current Zone

Sequence

Return Air

Temperature

Discharge Air

Temperature

Current Static

Pressure

Zone Seq

RA Temp

DA Temp

Pressure

Off xx.x °C or °F

xx.x °C or °F

x.x WC or Pa

Zone Seq

Cool

Zone Seq

Heat

Effective PI

Heat

Demand at RTU

Effective PI Cool

Demand at RTU

Highest PI Heat

Demand Zone

Address

Highest PI Cool

Demand Zone

Address

Heat Out

Cool Out

Heat MAC

Cool MAC

xxx %

xxx %

xxx xxx

Service

Indicates that there is a service alarm as per one of the configurable digital
input (DI1 or DI2

DAS

Alarm

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

SetClock

Indicates that the clock needs to be reset. There has been a power failure
which has lasted longer than 6 hours.

Filter

Indicates that the filters are dirty as per one of the configurable digital input
(DI1 or DI2)

Com
Lost

The communication between devices has been lost (No Communication)

When any of the fan is ON, the FAN LED will illuminate

When heating is ON, the HEAT LED will illuminate

When cooling is ON, the COOL LED will illuminate

USER INTERFACE

User configuring instructions menu

The VZ7656 series of controllers feature an intuitive,
menu-driven, back-lit LCD display that walks users and
installers through the configuring steps, making the
configuring process extremely simple. This menu is
typically accessed by the user to set the parameters
such as the clock time set, the schedule time events
and the system mode.

It is possible to bring up the user menu at any time by
depressing the MENU key. The status display automatically resumes after exiting the
user-configuring menu.

11 | VZ7656F1000W Installation Guide

Ex.:

Press yes key to change cooling temperature setpoint
Use the up or down arrow to adjust cooling setpoint

The YES key is used to confirm a selection, to move onto the next menu item
and to manually scroll through the displayed information.

The NO key is used when you do not desire a parameter change, and to
advance to the next menu item. Can also be used to toggle between heating
and cooling setpoints.

The MENU key is used to access the Main User Menu or exit the menu.

The down arrow key is used to decrease temperature setpoint and to adjust
the desired values when configuring the Terminal Equipment Controller.

The up arrow key is used to increase temperature setpoint and to adjust the
desired values when configuring the Terminal Equipment Controller.

Override

Resume

System mode

setting

Schedules

setting

Clock setting

Override
schd Y/N

Sys mode
set Y/N

Schedule
set Y/N

Clock
set Y/N

Appears only in
unoccupied mode

Cancel

ovrd Y/N

Appears only in
override mode

If the user pauses at any given time during configuring, Auto Help text is displayed to
help and guide the user through the usage and configuring of the controller.

Each of the sections in the menu is accessed and configured using 5 keys on the
controller cover. The priority for the alarms is as follows:

Local keypad interface

When left unattended for 45 seconds, the display will resume automatic status
display scrolling.

To turn on the back light, press any key on the front panel. The back lit display will
turn off automatically after 45 seconds.

Sequence of user menu:

12 | VZ7656F1000W Installation Guide

A) Override an unoccupied period

Override
schd Y/N

Cancel
ovrd Y/N

Sys mode
set Y/N

Sys mode
off

Off mode

Normal cooling or heating operation disabled.

Sys mode
auto

Automatic mode

Automatic changeover mode between heating and cooling operation
based on local zone demands voting for RTU system operation.

Sys mode
cool

Cooling mode

Cooling operation mode only

Sys mode
heat

Heating mode

Heating operation mode only

This menu will appear only when the controller is in unoccupied mode. The unoccupied
mode is enabled either by the internal timer scheduling or by a network unoccupied
command on the occupancy object.

If DI1 is configured to operate as a remote temporary override contact, this menu will be
disabled.
Answering yes to this prompt will cause the all the zones attached to the RTU controller to

go into occupied mode for an amount of time equal to the parameter “TOccTime” (1 to 12

hours).

B) Resume regular scheduling

This menu does not appear in regular operation. It will appear only when the controller is
in override mode.

Answering “Yes” to this question will cause all the zones attached to the RTU controller to
resume the regular configured scheduling of the RTU controller schedule.

B) System mode setting

This menu is accessed to set system mode operation. Use ▲▼ to set value, yes key to

confirm.

13 | VZ7656F1000W Installation Guide

C) Schedule set (2 events)

Schedule
set Y/N

MONDAY TIMER

SCHEDULE SET

TUESDAY

TIMER

SCHEDULE SET

WEDNESDAY

TIMER

SCHEDULE SET

OTHER DAYS ARE

IDENTICAL

Monday

set? Y/N

No next 

Yes down



Tuesday
set? Y/N

No next 

Yes down



Wednesda

set? Y/N

No next 
Yes down



Selects the day to be scheduled or

modified

Yes key to access day scheduling, No key to jump to next day

Occupied
Day? Y/N

No next 

Yes down



Occupied
Day? Y/N

No next 

Yes down



Occupied
Day? Y/N

No next 
Yes down



Yes = Daily schedules will be

accessed

No = Unoccupied mode all day

Yes key to access day scheduling, No key to jump to next day

Copy Y/N

Previous

Yes next



No down 

Copy Y/N

Previous

Yes next



No down 

Yes = Will copy previous day

schedule

No = Daily schedules will be

accessed

Yes key to copy previous day, No key to set new time value for each day

Occupied
00:00 AM

Use ▲▼

To set

value

Occupied
00:00 AM

Use ▲▼

To set

value

Occupied
00:00 AM

Use ▲▼

To set

value

Sets Event # 1 Occupied time

Will activate occupied setpoints

Use ▲▼ to set value, Yes key to confirm

Unoccup
00:00 AM

Use ▲▼

To set

value

Unoccup

00:00 AM

Use ▲▼

To set

value

Unoccup

00:00 AM

Use ▲▼

To set

value

Sets Event # 2 Unoccupied time

Will activate unoccupied setpoints

Use ▲▼ to set value, Yes key to confirm

Event

Period #1 - Event #1

Period #1 - Event #2

Occupied

Unoccupied

Daily Occupancy

Monday

7.00 AM

6.00 PM

Day time only

Tuesday

7.00 AM

6.00 PM

Day time only

Wednesday

7.00 AM

6.00 PM

Day time only

Thursday

7.00 AM

6.00 PM

Day time only

Friday

7.00 AM

6.00 PM

Day time only

Saturday

12.00 PM *

12.00 PM *

Unoccupied

Sunday

12.00 PM *

12.00 PM *

Unoccupied

Note: 12:00 PM = Noon
12:00 AM = Midnight

Scheduling can have 2 or 4 events per day. This is set in the configuration menu as per
parameter; (2/4event).

This section of the menu permits the user to set the weekly schedule for all the zones
attached to the RTU controller. Each day can be tailored to specific schedules if needed.

 2 events can be configured per day.
 Occupied & unoccupied periods can be set for each day.

Typical examples of a 2 event office schedule

Ex. #1 Office building closed all weekend

* Configuring consecutive events to the same time will cause the controller to choose the

last event as the time at which it will set its schedule. In the above example, the
controller will control the unoccupied set point until 7:00 AM Monday.

14 | VZ7656F1000W Installation Guide

Ex. #2 Commercial building which is occupied all weekend

Event

Period #1 - Event

#1

Period #1 - Event

#2

Occupancy

Occupied

Unoccupied

Daily

Occupancy

Monday

8.00 AM

5.00 PM

Day time only

Tuesday

8.00 AM

5.00 PM

Day time only

Wednesday

8.00 AM

5.00 PM

Day time only

Thursday

8.00 AM

5.00 PM

Day time only

Friday

8.00 AM

5.00 PM

Day time only

Saturday

12.00 AM **

11.59 PM **

Occupied

Sunday

12.00 AM **

11.59 PM **

Occupied

Schedule
set Y/N

Monday timer

Schedule set

Tuesday timer

Schedule set

Wednesday timer

Schedule set

Other days are identical

Monday
set? Y/N

No next 
Yes down



Tuesday
set? Y/N

No next 

Yes down 

Wednesda

set? Y/N

No next 

Yes down 

Selects the day to be scheduled or

modified

Yes key to access day scheduling, No key to jump to next day

Occupied
Day? Y/N

No next 

Yes down



Occupied
Day? Y/N

No next 

Yes down 

Occupied
Day? Y/N

No next 
Yes down



Yes = Daily schedules will be

accessed

No = Unoccupied mode all day

Yes key to access day scheduling, No key to jump to next day

Copy Y/N
Previous

Yes next 

No down 

Copy Y/N

Previous

Yes next



No down 

Yes = Will copy previous day

schedule

No = Daily schedules will be

accessed

Yes key to copy previous day, No key to set new time value for each day

Occupied
00:00 AM

Use ▲▼

To set

value

Occupied
00:00 AM

Use ▲▼

To set

value

Occupied
00:00 AM

Use ▲▼

To set

value

Sets Event # 1 Occupied time

Will activate occupied setpoints

Use ▲▼ to set value, Yes key to confirm

Unoccup

00:00 AM

Use ▲▼

To set

value

Unoccup
00:00 AM

Use ▲▼

To set

value

Unoccup

00:00 AM

Use ▲▼

To set

value

Sets Event # 2 Unoccupied time

Will activate unoccupied

setpoints

Use ▲▼ to set value, Yes key to confirm

Occupie2
00:00 AM

Use ▲▼

To set

value

Occupie2
00:00 AM

Use ▲▼

To set

value

Occupie2
00:00 AM

Use ▲▼

To set

value

Sets Event # 3 Occupied time

Will activate occupied setpoints

Use ▲▼ to set value, Yes key to confirm

Unoccup2
00:00 AM

Use ▲▼

To set

value

Unoccup2

00:00 AM

Use ▲▼

To set

value

Unoccup2

00:00 AM

Use ▲▼

To set

value

Sets Event # 4 Unoccupied time

Will activate unoccupied

setpoints

Use ▲▼ to set value, Yes key to confirm

**To schedule a day as occupied for 24 hours, set that day occupied time to
12:00 AM and Unoccupied time to 11:59 PM There will be a 1 minute unoccupied
period every night at 11:59 PM with this schedule configuration

D) Schedule set (4 events)

This section of the menu permits the user to set the weekly schedule for all the zones
attached to the RTU controller. Each day can be tailored to specific schedules if
needed.

 4 events can be configured per day.
 Occupied & Unoccupied periods can be set for each day.
 Scheduling the 3 rd. & 4 th. events to the same time will cancel the last period.

15 | VZ7656F1000W Installation Guide

Ex. #1. Four event retail establishment schedule

Event

Period 1 -

Event 1

Period 1 -

Event 2

Period 2 -

Event 3

Period 2 -

Event 4

Occupancy

Occupied

Unoccupied

Occupied

Unoccupied

Cool

Heat

Cool

Heat

Cool

Heat

Cool

Heat

Daily

72°F

70°F

80°F

62°F

72°F

70 °F

80°F

62 °F

Occupancy

Monday

7.00 AM

5.00 PM

12.00 PM *

12.00 PM *

Day time only

Tuesday

7.00 AM

5.00 PM

12.00 PM *

12.00 PM *

Day time only

Wednesday

7.00 AM

5.00 PM

12.00 PM *

12.00 PM *

Day time only

Thursday

7.00 AM

5.00 PM

7.00 PM

10.30 PM

Day/evening

time only

Friday

7.00 AM

5.00 PM

7.00 PM

10.30 PM

Day/evening

time only

Saturday

12.00 PM *

12.00 PM *

12.00 PM *

12.00 PM *

Unoccupied

Sunday

12.00 PM *

12.00 PM *

12.00 PM *

12.00 PM *

Unoccupied

Clock
set Y/N

Time setting

Day setting

Time format setting

Time
set? Y/N

No next 
Yes down 

Day
set? Y/N

No next 
Yes down 

12/24hrs
set? Y/N

No = exit
Yes down 

Time
0:00

Use ▲▼
To set value

Day
Monday

Use ▲▼
To set value

12/24hrs
12 hrs

Use ▲▼
To set value

* Scheduling events to the same time will cancel the last period and leave the
controller in unoccupied mode.

E) Clock/Day Settings

This section of the menu permits the user to set the time and day.

INSTALLER CONFIGURATION PARAMETER MENU

 Configuration can be done through the network or locally at the Terminal Equipment

Controller.

 To enter configuration, press and hold the middle button “Menu” for 8 seconds
 If a password lockout is active, “Password” is prompted. Enter password value using the

“up” and “down” arrows and press “Yes” to gain access to all configuration properties of

the Terminal Equipment Controller. A wrong password entered will prevent local access to
the configuration menu.

 Once in the configuration menu, press the “No” button repetitively to scroll between all the

available parameters.

 When the desired parameter is displayed, press “Yes” to adjust it to the desired value

using “up” and “down” arrows. Once set, press “Yes” to scroll to the next parameter.

16 | VZ7656F1000W Installation Guide

Configuration Parameters

Default Value

Significance and Adjustments

PswrdSet

Configuration parameters
menu access password
Default value = 0
No password prompted

This parameter sets a password access to prevent
unauthorized access to the configuration menu

parameters. A default value of “0” will not prompt a

password or lock the access to the configuration
menu.
Range is: 0 to 1000

RTC MAC

Zone Controller Controller
network address

Default Value: 4

RTC MAC address must be unique for the entire
network.

1 to 255 (Increments: 1 or 10)

For BACnet™ models valid range to use is from 1 to

127.

PAN ID

Personal Area Network
Identification

Default value = 0
Range is: 0 to 500

This parameter (Personal Area Network Identification) is
used to link specific controllers to a single specific
Viconics wireless gateway ( VWG / Jace-Driver ) or a
specific VZ76 RTU controller. For every controller
reporting to a VWG / Jace-Driver or VZ76 controller, be
sure you set the SAME PAN ID value.

The default value of 0 is NOT a valid PAN ID. The valid
range of available PAN ID is from 1 to 500

17 | VZ7656F1000W Installation Guide

When PAN ID is used with a range of 251 to 500, for (SA) Stand-Alone Systems

RTU VZ76 Coordinator

Channel 25 ID

200

Zone VZ72 Router
Channel 25 ID

200

Zone VZ72 Router
Channel 25 ID

200

Zone VZ72 Router
Channel 25 ID

200

Zone VZ72 Router
Channel 25 ID

200

System 1

RTU VZ76 Coordinator

Channel 25 ID

205

Zone VZ72 Router
Channel 25 ID

205

Zone VZ72 Router
Channel 25 ID

205

Zone VZ72 Router
Channel 25 ID

205

Zone VZ72 Router
Channel 25 ID

205

System 2

In this application, the VZ76 controller(s) are the coordinators to their own system. I.E.
they are the network masters for each VZ72 controller reporting to them.

 Wireless controller factory default Channel & PAN ID = Controller(s) offline
 VZ76 RTU controller is the network coordinator.
 Range of PAN ID on all controllers to use 251 to 500. This range is reserved for

stand-alone system operation.

Examples:

Notes:
Each system with a VZ76 RTU master will use a unique PAN ID and / or Channel settings.

18 | VZ7656F1000W Installation Guide

When PAN ID is used with a range of 1 to 250, for (NS) Networked Systems

Coordinator
Channel 25 ID

200

RTU VZ76 Router

Channel 25 ID

200

Zone VZ72 Router
Channel 25 ID

200

Zone VZ72 Router
Channel 25 ID

200

Zone VZ72 Router
Channel 25 ID

200

Zone VZ72 Router
Channel 25 ID

200

System 1

System 2

RTU VZ76 Router

Channel 25 ID

200

Zone VZ72 Router
Channel 25 ID

200

Zone VZ72 Router
Channel 25 ID

200

Zone VZ72 Router
Channel 25 ID

200

Zone VZ72 Router
Channel 25 ID

200

In this application, any controller(s) are simply router to the system. The VWG / Jace­Driver is the coordinators to the system. I.E. the VWG / Jace-Driver is the network
masters for ANY controller(s) reporting to them.

 Wireless controller factory default Channel & PAN ID = Controller(s) offline
 VWG Jace-Driver is the network coordinator
 Any controllers ( VZ72’s, VZ76xx RTU’s or any VT7xxx wireless controllers ) act

as routers.

 Range of PAN ID on all controllers to use 1 to 250. Reserved for networked

system operation.

Examples:

Notes:

 Each controller(s) to use same PAN ID and Channel as VWG Jace-Driver

coordinator.

VWG / Jace-Driver supports network integration for required GUI / System / Status
objects.

19 | VZ7656F1000W Installation Guide

Channel

Channel selection

Default value = 10
Range is: 10 to 26

This parameter (Channel) is used to link specific
controllers to specific Viconics wireless gateway(s) (VWG
/ Jace-Driver) or to the main VZ76xx RTU controller. For
any system, be sure you set the SAME channel value
both at the network coordinator and on all the VZ72xx
controller(s).

Viconics recommends using only the following channels:
15, 25 & 26.

The default value of 10 is NOT a valid channel. The valid
range of available channels range from 11 to 26.

Lockout Keypad lockout levels
Default value = 0 No lock

0 = No lock
1 = Low level
2 = High level

USER KEY FUNCTIONS

LEVEL

Global

Unocc.

Override

System mode

setting

Schedules

setting

Clock setting

0

1

2

pwr del
Power-up delay
Default value = 10 seconds

On initial power up of the Terminal Equipment Controller
(each time 24 VAC power supply is removed & re-applied)
there is a delay before any operation is authorized (fan,
cooling or heating). This can be used to sequence start up
multiple units / Terminal Equipment Controller in one
location.

10 to 120 seconds

20 | VZ7656F1000W Installation Guide

CntrlTyp
Sets how the Zones attached
to the RTU controller vote to
determine the actual system
mode of operation.

(Heat or Cool)

Default Value:

1 = AV_H3

This parameter will select the type of operation required
for the RTU based on the size of the system. Please refer
to the Viconics Zoning System Guide for recommended
settings.

Only the Zones that actually have values above 0% in
their (PIHT Wei & PICL Wei) configuration parameters
will be able to vote on the RTU operational mode
calculation.

0 =Highest: The highest PI Heating or PI Cooling
demand from the selected voting zones will dictate
heating or cooling operation of the RTU controller.

1 = AV_H3: The average of the 3 highest PI Heating or PI
Cooling demands from the selected voting zones will
dictate heating or cooling operation of the RTU controller.

2 = AV_H5: The average of the 5 highest PI Heating or PI
Cooling demands from the selected voting zones will
dictate heating or cooling operation of the RTU controller.

Dis HL
Discharge air temperature
high limit

Default: 120°F

Discharge air high temperature value at which the heating
stages will be locked out.

70°F to 150°F (21°C to 65°C)
(increments: 0.5° or 5°)

Dis LL

Discharge air temperature low
limit

Default: 45°F

Discharge air low temperature value at which the cooling
stages will be locked out.

35 to 65°F (2.0°C to 19.0°C)

(increments: 0.5° or 5°)

Anticycl

Minimum on/off operation time
for stages

Default value = 2 minutes.

Minimum On/Off operation time of cooling & heating
stages.

IMPORTANT, anti-short cycling can be set to 0 minutes
for equipment that possess their own anti cycling timer.
Do not use this value unless the equipment has the above
mentioned internal timer. Failure to follow this guideline
may lead to damaged equipment.

0, 1, 2, 3, 4 & 5 minutes.

21 | VZ7656F1000W Installation Guide

Min SH

Minimum supply heat
temperature setpoint

Default value = 64 °F
(18 °C)

Sets the minimum supply heat to be maintained by the
controller during occupied periods (Occupied or
Temporary Override).

50 °F to 72 °F (10 °C up to 22 °C)

(increments: 0.5° or 5°)

IMPORTANT: To be active, the Minimum Supply Air
Temperature control logic requires the following conditions
to be fulfilled:

- Controller in Occupied mode

- Controller in Heat mode

- Outdoor Temperature < SH Lock setting

- Discharge Air Temperature < Dis HL setting

Cool cph

Cooling stages cycles per
hour

Default value = 4 C.P.H.

Will set the maximum number of cooling stage cycles per
hour under normal control operation. It represents the
maximum number of cycles that the equipment will be
turned on and off in the span of an hour.

Note that a higher C.P.H will represent a higher accuracy
of control at the expense of wearing down mechanical
components faster.

3 or 4 C.P.H.

Deadband

Minimum deadband
Default value = 2.0 °F (1.1 °C)

Minimum deadband value between the heating and
cooling setpoints.

Used only with the setpoints used during communication
failure (ComLost Alarm) while operation is under the
return air sensor. If modified, it will be applied only when
any of the setpoints are modified.

2, 3 or 4 °F ( 1.0 to 2.0 °C )

Units

Sets the display scale of the
controller

Default value = Imp

0 = SI for Celsius / Pa pressure scale.
1 = Imp for Fahrenheit / in. WC pressure scale.

fan del

Fan delay
Default value = Off

Fan delay extends fan operation by 60 seconds after the
call for heating or cooling ends.
Valid only for Auto fan mode. “On” fan mode will leave the
fan always on.

Off or On

22 | VZ7656F1000W Installation Guide

DI 1

Digital input 1 configuration
Default value = None

Open contact input = function not energized.
Closed contact input = function energized.

None: No function will be associated with the input.
Rem NSB, remote NSB timer clock input. Will disable the

internal scheduling of the controller. The scheduling will
now be set as per the digital input. The time is still
displayed as information, but the menu part related to
scheduling is disabled and no longer accessible.

Open contact = occupied RTU operation mode.
Closed contacts = unoccupied RTU operation mode.
RemOVR; temporary override remote contact. Disables all

override menu functions of the RTU controller. The
override function is now controlled by a manual remote
momentarily closed contact. When configured, in this
mode the input toggles between unoccupied and override.
With this function enabled it is now possible to toggle
between unoccupied & occupied RTU operation modes for
the amount of time set by the parameter “TOccTime.”
(Temporary occupancy time). When override is enabled,
an override status message will be displayed.

Filter: a back-lit flashing filter alarm will be displayed on
the controller LCD screen when the input is energized.

Service: a back-lit flashing service alarm will be displayed
on the controller LCD screen when the input is energized.

ToccTime

Temporary occupancy time
Default value = 3 hours

Temporary occupancy time with occupied mode setpoints
when override function is enabled
When the Terminal Equipment Controller is in unoccupied
mode, function is enabled with either the menu or DI1 or
DI2 configured as remote override input.

0,1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 & 12 hours

Cal RS

Room air temperature sensor
calibration
Default value = 0.0 °F or °C

Offset that can be added/subtracted to actual displayed
room temperature

± 5.0 °F ( ± 2.5 °C )

Cal OS

Outside air temperature
sensor calibration
Default value = 0.0 °F or °C

Offset that can be added/subtracted to actual displayed
outside air temperature
± 5.0 °F ( ± 2.5 °C )

23 | VZ7656F1000W Installation Guide

SH lock

Outside air temperature
supply heat lockout

Default value = 32 °F
(0 °C)

Disables heating operation based on outdoor air
temperature.

Please refer to the Viconics Zoning System Guide for
recommended settings.

From –15 °F up to 120 °F (-26 °C up to 49 °C)

(increments: 5° or 50°)

C stage
VZ7656R1000B models only

Number of cooling stages
installed at RTU.

Default value = 2 stages

Will revert the operation of 2 stage controllers to a single
stage when the second cooling step is not needed.

1 or 2 stages

H lock

Outside air temperature
heating lockout

Default value = 120 °F (49
°C)

Disables heating stage operation based on outdoor air
temperature.
Function will only be enabled if OS ( outside air
temperature sensor ) is connected.

From -15 °F up to 120 °F (-26 °C up to 49 °C)

C lock

Outside air temperature
mechanical cooling lockout.
Default value = -40 °F(-40 °C)

Disables cooling stage operation based on outdoor air
temperature.
On economizer model, free cooling will not be disabled by
this function.
Function will only be enabled if OS (outside air
temperature sensor) is connected.

From -40 °F up to 95 °F ( -40 °C up to 35 °C )

2/4event

Number of events
configuration
Default value = 2 event

2 events, will set up scheduling for the following
Event 1 is for Occupied setpoints
Event 2 is for Unoccupied setpoints
4 events, will set up scheduling for the following
Event 1 is for Occupied setpoints
Event 2 is for Unoccupied setpoints
Event 3 is for Occupied setpoints
Event 4 is for Unoccupied setpoints

24 | VZ7656F1000W Installation Guide

Aux cont

Auxiliairy contact
configuration
Default value = N.O.
normally open

This contact can be used to energize peripheral devices such
as: lighting equipment, exhaust fans, economizers, etc.
This contact will operate in parallel with the internal
occupied/unoccupied schedule of the Terminal Equipment
Controller or the remote NSB contact if DI1 or DI2 is used.
When the system is in OFF mode, the contact will remain in its
unoccupied status independently of the occupied / unoccupied
schedule.

Configured

Contact

occupied status

Contact

unoccupied status

N.O.

Closed

Opened

N.C.

opened

Closed

Prog rec

Progressive recovery
enabled

Default value = Off

Progressive recovery is
automatically disabled if
BI 1 is configured remote
NSB

Off, = no progressive recovery.
The configured occupied schedule time is the time at which the

system will restart and send the occupied status to the attached
zones.

On, = progressive recovery active.
The configured occupied schedule time is the time at which the

desired occupied temperature setpoints will be attained at the
Zones. The RTU controller will automatically optimize the
equipment start time.

Occ CL

Return air sensor network
lost occupied cooling
setpoint

Default: 75°F

If network communication is lost with the zone controllers, the
return air sensor will control the RTC to maintain this setpoint.

54°F to 100°F (12°C to 37.5°C)

(increments: 0.5° or 5°)

Occ HT

Return air sensor network
lost occupied heating
setpoint

Default: 72°F

If network communication is lost with the zone controllers, the
return air sensor will control the RTC to maintain this setpoint.

40 to 90°F (4.5°C to 32°C)
(increments: 0.5° or 5°)

Unocc CL

Return air sensor
network lost unoccupied
cooling setpoint

Default: 82°F

If network communication is lost with the zone controllers, the
return air sensor will control the RTC to maintain this setpoint.

54 to 100°F (12°C to 37.5°C)

(increments: 0.5° or 5°)

25 | VZ7656F1000W Installation Guide

Unocc HT

Return air sensor network
lost unoccupied heating
setpoint

Default: 65°F

If network communication is lost with the zone controllers, the
return air sensor will control the RTC to maintain this setpoint.

40 to 90°F (4.5°C to 32°C)

(increments: 0.5° or 5°)

Sp range

Static Pressure sensor
range

Default: 0

Static pressure transducer range. Voltage input range is 0 to 5
VDC.

0 = 0 to 1.5 in WC
1 = 0 to 2 in WC
2 = 0 to 3 in WC
3 = 0 to 4 in WC

4 = 0 to 5 in WC

Pressure

Static Pressure setpoint
Default: 0.8”WC

Bypass damper will maintain this supply static pressure set
point.

Please refer to the Viconics Zoning System Guide for
recommended settings.

0 to 2 in WC (0 Pa to 500 Pa)

(increments: 0.1” WC or 25 Pa)

SP Cntrl

Static Pressure Control
Type

Default: BPD

Depending on the setting of this parameter, the 0-10VDC
pressure control output (labled BPD) will either have a 0VDC or
10VDC output when the fan is Off.

BPD (By-Pass Damper): 10VDC when fan is Off
FD (Variable Frequency Drive): 0VDC when fan is Off

26 | VZ7656F1000W Installation Guide

SPECIFICATIONS

Terminal Equipment Controller power
requirements:

Operating conditions:
Storage conditions:
Sensor:

Resolution:
Temperature control accuracy:

Contact output rating
Occ, Stand-By and Unocc cooling setpoint range:

Occ, Stand-By and Unocc heating setpoint range:
Room and outdoor air temperature display range:
Digital inputs:
Analog outputs rating (BPD & AO)
Analog outputs accuracy (BPD & AO)
Wire gauge:
Approximate shipping weight:
Agency Approvals all models:

Agency Approvals all models:

Agency Approvals Wireless models:

19-30 VAC 50 or 60 Hz; 2 VA Class 2
RC to RH jumper 2.0 Amps 48VA max.
0 °C to 50 °C ( 32 °F to 122 °F )
0% to 95% R.H. non-condensing

-30 °C to 50 °C ( -22 °F to 122 °F )
0% to 95% R.H. non-condensing
Local 10 K NTC thermistor
± 0.1 °C ( ± 0.2 °F )
± 0.5 ° C ( ± 0.9 °F ) @ 21 °C ( 70 °F )
typical calibrated
Relay outputs: 30 VAC, 1 Amp.
Maximum, 3 Amp. In-rush.

12.0 to 37.5 °C ( 54 to 100 °F )

4.5 °C to 32 °C ( 40 °F to 90 °F )

-40 °C to 50 °C ( -40 °F to 122 °F )
Dry contact across terminal DI1
0 to 10 VDC into 2K resistance min
± 3% typical
18 gauge maximum, 22 gauge

0.75 lb ( 0.34 kg )
UL: UL 873 (US) and CSA C22.2 No.
24 (Canada), File E27734 with CCN
XAPX (US) and XAPX7 (Canada)

Industry Canada: ICES-003 (Canada)
FCC: Compliant to CFR 47, Part 15,

Subpart B, Class A (US)
CE : EMC Directive 2004/108/EC
(Europe Union)
C-Tick: AS/NZS CISPR 22 Compliant
(Australia / New Zealand) Supplier
Code Number N10696
FCC: Compliant to: Part 15, Subpart B,
Class (US)

THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT
TO THE FOLLOWING TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL
INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED,
INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.

Please check with your local government for instruction on disposal of this product

27 | VZ7656F1000W Installation Guide

DRAWING & DIMENSIONS

Viconics Technologies Inc.

Tel.: Fax: Toll free:

www.viconics.com

28 | VZ7656F1000W Installation Guide