Viconics VTR7300 Series Installation Manual

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CONTENTS

Installation 2

Location 2
Installation 2

Operation Overview 3

Network ready 4

Terminal, Identification and Function 5
Communication wiring to VC3xxxX Relay Pack 5

Network wiring topology 6

VC3xxx LED Operation 6

Wiring of local inputs to VTR73xxA Room Controller 6

Configuring and Status Display Instructions 7

Status display 7

User Interface 9

Local keypad interface 9

VTR7300 Series

For Commercial and Lodging HVAC

Fan Coil Applications

November 2015

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INSTALLATION

Remove security screw on bottom of Room
Controller cover.

 Open unit by pulling on bottom side of

Room Controller (fig. 1).

 Remove wiring terminals from sticker.
 Read FCC ID and IC label installed in

the cover.

Location

1. Should not be installed on 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 Room Controller.

Installation

1. Swing open Room Controller PCB to
left by pressing PCB locking tabs (fig.

2).

2. Pull out cables 6” out from wall.
Ensure wall surface is flat and clean.

3. Insert cable in central hole of base.

4. Align base and mark location of two
mounting holes on wall ensuring to
install proper side of base up.

5. Install anchors in wall.

6. Insert screws in mounting holes on
each side of base (fig. 2).

7. Gently swing back circuit board on
base and push until tabs lock.

8. Strip each wire 1/4 inch from end.

9. Insert each wire according to wiring
diagram.

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

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

12. Re-install cover (top side first) and
gently push extra wire length back
into hole in wall.

13. Install security screw.

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OPERATION OVERVIEW

The VC3xxxX Series Line Voltage Switching Transformer Relay Pack(s) operate as slave
unit(s) under the control of a single master VTR73xxA Room Controller.

Fan operation can be configured and wired for the following:

 3 Speed configuration using 3 fan relays ( Low - Med - High )
 2 Speed configuration using 2 fan relays ( Low - High )
 3 Speed configuration with auto fan speed mode using 3 fan relays

(Low - Med - High - Auto)

 2 Speed configuration with auto fan speed mode using 2 fan relays

(Low - High - Auto)

 Single fan speed configuration.

The VTR7300 Controller can be configured for typical 2 or 4 pipe heating / cooling FCU
(Fan Coil Unit) applications.

2 or 4 pipe only operation can be configured and wired for the following:

o Cooling only
o Heating only
o Cooling / Heating with network or local auto changeover

 If replacing an existing Line Voltage FCU Thermostat, label the wires

before removal of the thermostat.

 Electronic controls are static sensitive devices. Discharge yourself

properly before manipulating and installing the Room Controller.

 A short circuit or wrong wiring may permanently damage the Room

Controller or the equipment.

 All VTR7300 series controls 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.

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2 or 4 pipe only with electric reheat can be configured and wired for the following:

o Cooling only
o Heating only
o Cooling / Heating with network or local auto changeover
o On-Off electric reheat only
o Cooling with On-Off or modulating VDC pulsed electric reheat

(model dependent)

o Heating with On-Off or modulating VDC pulsed electric reheat

(model dependent)

o Cooling / Heating with network or local changeover with On-Off

or modulating VDC pulsed electric reheat (model dependent)

 The VC3xxxX Relay Pack supplies power to the wall VTR73xxA Room

Controller.

 The VTR73xxA Controller controls the VC3xxxX Relay Pack(s) via a simple

communication bus.

 A maximum of 10 VC3xxxX Relay Pack can be used under a single VTR73xxA

Room Controller.

 3 wires minimum are required between the VTR73xxA Controller and the first

VR7300 Relay Pack.

 The 3 wire functions are known as the following:

o 1 Tx / Rx Communication
o 2 Power Hot 7.0 VDC 4 Watts maximum ( required for the

VTR73xxA Controller power)

o 3 Power common

 Commands for fan speed and valve operation are issued from the VTR73xxA

Room Controller to the VC3xxxX Relay Pack(s)

Network ready

 All Viconics VTR7300 series Room Controllers are designed for stand-alone

operation.

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

available communication adapter options.

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

retrofitted with the following communication adapters:

o VCM7000V5000W, Room Controller wireless communication adapter
o VCM7300T5000B, Room Controller BACnet™ MS-TP communication

adapter

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TERMINAL, IDENTIFICATION AND FUNCTION

TERMINAL

IDENTIFICATION

ALL VTR73XXA5X00(X)

ROOM CONTROLLER

Terminal 3

Tx – Rx Communication

Terminal 4

Power Hot 7.0 VDC

Terminal 5

Power Common

Terminal 13

BI 1 ( Configurable )

Terminal 14

Scom

Terminal 15

BI 2 ( Configurable )

COMMUNICATION WIRING TO VC3XXXX RELAY PACK

Only ONE VC3xxxX Relay Pack with remote monitoring inputs can be used under a single
VTR73xxA Controller. All other slave units must be VC3xxxX Relay Pack(s) WITHOUT
remote inputs. A maximum of 10 VC3xxxX Relay Packs can be used for a single
VTR73xxA Room Controller.

From the VTR73xxA to the first VC3xxxX Relay Pack

 Uses existing or new field wires
 A minimum of 3 wires are required 14-22 Ga Solid or Stranded. Shield not

necessary.

From the first VC3xxxX to all other slave VC3xxxX Relay Pack(s)

 Uses existing or new field wires
 A minimum of 2 wires are required 14-22 Ga Solid or Stranded. Shield not

necessary.

 Connect only wires #1 Power Common and #2 Tx/Rx Communication

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Network wiring topology

VC3XXX LED OPERATION

LED / Time (Status operation)

Wiring of local inputs to VTR73xxA Room Controller

Condition of the Status LED

Cause

Solution

 2 short blinks

No communication between

the VTR73xxA and the
VC3xxxX relay pack. The
VC3xxxX Relay Pack will

resume its output “no

communication active” status

Check communication

wiring and or power
cycle the controllers

 2 short blinks and a

longer blink

Normal communication

between the VTR73xxA and

the VC3xxxX relay pack.

N/A

0.2

2.5

0.6

0.4

0.0

1.0

5.0 sec

Power On

Online to

VTR73xxA

13

- BI 1

14

- Scom

15

- BI 2

Local BI 1 Input by configuration:

- None (monitoring only)

-

Remote motion detector: Motion NO or Motion NC

- Remote Night Setback: RemNSB

Local BI 2 Input by configuration:

-

None (monitoring only)

-

- Window contact Window:

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CONFIGURING AND STATUS DISPLAY INSTRUCTIONS

Status display

The VTR73xxA Room Controller features a two-line, eight-character display. There is a
low-level backlight that is always active and can only be seen at night.

When left unattended, the Room Controller has an auto scrolling display that shows the
status of the system. There is an option in the configuration menu to lockout the scrolling
display and to only display the room temperature and conditional outdoor temperature to
the user. With this option enabled, no local status of mode, occupancy and relative
humidity is shown.

Each item scrolls individually with the back lighting in low level mode. Pressing any key
will cause the back light to come on to high level. When left unattended for 10 seconds
after changes are made, the display will resume automatic status display scrolling.

To activate the back light to high level, press any key on the front panel. The back light
display will return to low level when the Room Controller is left unattended for 45 seconds.

Sequence of auto-scroll status display:

ROOM &

HUMIDITY

SYSTEM MODE

SCHEDULE

STATUS

OUTDOOR

TEMPERATURE

ALARMS

x.x °C or °F
XX % RH

Sys mode
auto

Occupied

Outdoor
x.x °C or °F

Service

If humidity display
enabled

Sys mode
cool

Stand-By

Network value only

Filter

RoomTemp
x.x °C or °F

Sys mode
heat

Unoccup

n/a

Window

If humidity display
is not enabled

Sys mode
off

Override

n/a

Low Batt

% RH display is conditional to:

(Humidity display is model and configuration dependent)

 Model with RH sensor built in
 Display function can be enabled with RH display parameter. Displayed range is

10 to 90 % RH

Outdoor air temperature

 Display is only enabled when outdoor air temperature network variable is

received.

Occupancy status

 Occupied, Stand-By, Unoccupied and Override status are displayed on the

scrolling display.

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Alarms

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

scrolling status display.

 When an alarm message is displayed, the backlit screen will illuminate at the

same time as the message and shut off during the rest of the status display.

 A maximum of two alarms can appear at any given time. The priority for the

alarms are as follows:

Three status LED’s on the Room Controller cover are used to indicate the status of the fan
(any speed), a call for heat, or a call for cooling.

Fan coil models

When any of the fan speeds are ON, the FAN LED will illuminate

When heating & reheat is ON, the HEAT LED will illuminate

When cooling is ON, the COOL LED will illuminate

Service

Indicates that there is a service alarm as per one of the configurable binary
inputs ( BI2 )

Filter

Indicates that the filters are dirty as per one of the configurable binary
inputs ( BI2 )

Window

Indicates that the outside window or door is opened and that the Room Controller
has cancelled any cooling or heating action ( BI1 )

Low
Batt

Indicates that attached wireless switching devices (Door or window contact) have
a low battery condition.

(Only functional when used with a wireless communication adapter)

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USER INTERFACE

Unoccupied mode override

An Override can be made on commercial models during an unoccupied period. If the
Override option is enabled in the lockout configuration, pressing the middle override
button will resume occupied setpoints for a time specified by the parameter “ToccTime”.

Local keypad interface

Is used to toggle between the different system modes available as per
sequence and menu selected.

 Repetitively pressing the button will toggle between all the available modes.
 Available menus are dependent on selected sequence of operation.

 Is used to toggle between the different fan modes available as per the

sequence and menu selected

 Repetitively pressing the button will toggle between all the available modes
 Available menus are dependent on selected sequence of operation and menu

selected for Fan

 Hotel and lodging applications. Toggles the local user temperature scale

between °F and °C

 Commercial and institutional applications. Set a local unoccupied timed

override to occupied mode

 In cooling mode only the cooling setpoint is displayed,
 In heating mode only the heating setpoint is displayed
 In auto mode, (See below)

 In cooling mode only the cooling setpoint is displayed,
 In heating mode only the heating setpoint is displayed
 In auto mode, (See below)

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Viconics Technologies Inc.

Tel.: Fax: Toll free:

www.viconics.com