Veris VT7300 Installation Instructions

PIR Ready VT7300 Series

24 Vac Low Voltage Fan Coil Thermostats

For Commercial and Lodging HVAC Applications

(Issue Date: May 19, 2009 – 028-0183_R6)

Product overview

The VT7300 PI thermostat family is specifically designed for fan coil control. The product features a backlit LCD display with dedicated function menu buttons for simple operation. Accurate temperature control is achieved due to the product’s PI proportional control algorithm, which virtually eliminates temperature offset associated with traditional, differential-based thermostats.

Models are available for On/Off, 3 point floating and analog 0 to 10 Vdc control and can control up to three fan speed. Three additional inputs are also provided for monitoring and / or various advanced functions.

All models feature configurable System and Fan button functions to meet all

VT73x5X Lodging VT73x0X Commercial

possible applications. They all contain an SPST auxiliary switch that can be used to control lighting or auxiliary reheat.

The thermostats are also compatible with the new Viconics PIR cover accessories. Thermostats equipped with a PIR cover provide advanced active occupancy logic, which will automatically switch occupancy levels from Occupied to Stand-By and Unoccupied as required by local activity being present or not. This advanced occupancy functionality provides advantageous energy savings during occupied hours without sacrificing occupant comfort. All thermostats can be ordered with or without a factory installed PIR cover ( see ordering notes below ).

The additional following documents are available at: www.viconics.com

• PIR application information and examples, are available on document: APP-PIR-Guide-Exx

• PIR cover installation information is available on document: PIR Cover Installation-Exx

• Information on the LON models (VT73xxX5x00E), is available on document ITG-VT72_73-PIR-LON-Exx

• Information on the BACnet models (VT73xxX5x00B), is available on document ITG-VT72_73-PIR-BAC-Exx

• Information on the Wireless models (VT73xxX5x00W), is available on documents: ITG-VWG-40-BAC-Exx and LIT-VWG-40-SETUP-Exx

Models available

Viconics

Part

Numbers

Application

RH sensor Market Commercial / Institution Hotels / Lodging

Ordering Information Notes:

- (X) model number represents available communication options: X=none for Stand-alone, X=B for BACnet MS-TP, X=E for Echelon and X=W for Wireless

- Thermostats can be ordered with a factory installed PIR cover. Please use (5500) extension instead of the (5000) only extension.: Ex. VT7300C5500E.

- Thermostats ordered without a PIR cover can be retrofitted with a separate PIR accessory cover afterwards when required

Features and benefits

VT7300A5x00(X)

2 & 4

Pipes

On/Off

No No Yes No No Yes No Yes No Yes

VT7300C5x00(X)

2 & 4 Pipes

Floating & On/Off

VT7350C5x00(X)

VT7305A5x00(X)

2 & 4

Pipes

On/Off

VT7305C5x00(X)

2 & 4 Pipes

Floating & On/Off

VT7355C5x00(X)

VT7300F5x00(X)

Commercial /

Institution

VT7350F5x00(X)

2 & 4 Pipes

Analog 0-10 Vdc

VT7305F5x00(X)

Hotels / Lodging

VT7355F5x00(X)

Features Benefits

• Models available with internal humidity sensing ⇒ Increased occupant comfort through dehumidification

• Advanced occupancy functions ⇒ Through the network or smart local occupancy sensing

• Ready for PIR accessory cover ⇒ Fully integrated advanced occupancy functionality

• 3 configurable inputs ⇒ Adds functionality

• Configurable sequences of operation ⇒ Single model meets more applications

• Configurable fan functions button ⇒ Meets more applications with a single model

• Unique configuration setup utility ⇒ Minimizes parameter tampering

• Multi level lockable keypad ⇒ Tamper proof, no need for thermostat guards

• Auto Fan speed mode

• Available for 24 Vac On/Off, Floating or Analog control ⇒ Meet advanced applications requirements

• Auxiliary output ⇒ Can be used for lighting or reheat

028-0183 R6_LIT-VT7300-PIR-E06.doc www.viconics.com / sales@viconics.com

⇒ Increased occupant comfort in cooling mode by reducing

humidity and offer less fan noise in all mode of operation

Programmable BI/UI inputs overview

Binary input #1 can be configured for the following functions:

1. (None): No function will be associated with the input

2. (Rem NSB): remote NSB timer clock input. The

scheduling will now be set as per the binary input. It provides low cost setback operation via a dry contact

• Contact opened = Occupied

• Contact closed = Unoccupied

3. (Motion NO) and (Motion NC): Advanced PIR occupancy functions using a Normally Open (NO) or Normally Closed (NC) remote PIR motion sensor. Occupancy mode is now set as per applied PIR function and configuration. Application information and examples, are available on document: APP-PIR-Guide-Exx. This document will provide the installers and system designers with detailed examples on applications, parameter configuration information, sequence of operation, troubleshooting and diagnostic help required for the proper usage of the PIR accessory covers

4. (Window) EMS: Forces the system to disable any current heating or cooling action by the thermostat. The mode stays the same and the current setpoints are the same Occupied setpoints. Only the outputs are disabled. There is a Door/Window alarm displayed on the thermostat to indicate to the local tenant that the door/window needs to be closed for cooling or heating to resume. Use NC contact.

• Contact opened = System disabled with local

Window alarm

• Contact closed = System enabled

Binary input #2 can be configured for the following functions:

1. (None): No function will be associated with the

input

2. (Door Dry) Door contact & Motion detector: This configuration is only functional if binary input #1 is set to Motion NO or Motion NC or a PIR accessory cover is used.

With this sequence enabled, the occupancy is now dictated through those 2 inputs. Any motion detected will set the zone to occupied status. The zone will remain permanently in occupied mode until the door contact switch opens momentarily. The thermostat will then go in stand-by mode. If more movements are detected, the occupied mode will resume. While the door is opened, any movements detected by the remote PIR sensor or the PIR accessory cover will be ignored. Use a Normally Closed contact switching device.

• Contact opened = Door opened

• Contact closed = Door closed

3. (RemOVR): temporary occupancy remote override contact. This function disables the central button override function on the thermostat. 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.

It is now possible to toggle between unoccupied & occupied setpoints for the amount of time set by parameter (TOccTime) temporary occupancy time.

4. (Filter): a backlit flashing Filter alarm will be displayed on the thermostat LCD screen when the input is energized. It can be tied to a differential pressure switch that monitor filters

• Contact opened = No alarm

• Contact closed = Alarm displayed

5. (Service): a backlit flashing Service alarm will be displayed on the thermostat 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.

• Contact opened = No alarm

• Contact closed = Alarm displayed

Universal input #3 can be configured for the following functions:

1. (None): No function will be associated with the input

2. (COC/NH) Change over dry contact. Normally Heat: Used for hot / cold water change over switching in 2 pipe systems.

• Contact closed = Cold water present

• Contact opened = Hot water present

Only used and valid if system is setup as 2 pipes. Parameter ( Pipe No ) set as 2 pipes.

3. (COC/NC) Change over dry contact. Normally Cool: Used for hot / cold water or air change over switching in 2 pipe systems.

• Contact closed = Hot water present

• Contact opened = Cold water present

Only used and valid if system is setup as 2 pipes. Parameter ( Pipe No ) set as 2 pipes.

4. (COS) Change over analog sensor: Used for hot / cold water or air change over switching in 2 pipe systems. Only used and valid if system is setup as 2 pipes. Parameter ( Pipe No ) set as 2 pipes.

• If temperature is > 77 °F = Hot water present

• If temperature is < 75 °F = Cold water present

5. (SS) Supply air sensor monitoring: Used for supply air temperature monitoring. Only used for network reporting of the supply air temperature. Has no internal function in the thermostat.

Installation

• Remove security screw on the bottom of thermostat cover.

• Open up by pulling on the bottom side of thermostat.

• Remove Assembly and remove wiring terminals from sticker. (Fig. 3)

• Please note the FCC ID and IC label installed in the cover upon

removal of cover for the wireless products.

A) Location: 1- Should not

be installed on an outside wall. 2- Must be installed away from any heat source. 3- Should not be installed near an air discharge grill. 4- Should not be affected by direct sun radiation. 5- Nothing must restrain vertical air circulation to the thermostat.

B) Installation: 1- Swing open the thermostat PCB to the left by pressing the PCB

locking tabs. (Fig. 4) 2- Pull out cables 6” out of 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 proper side of base up. 6- Install anchors in the wall. 7- Insert screws in mounting holes on each side of the base.

(Fig. 4) 8- Gently swing back the circuit board on the base and push on it

until the tabs lock it. 10- Strip each wire 1/4 inch. 11- Insert each wire according to wiring diagram. 13- Gently push back into hole excess wring (Fig. 5) 14- Re-Install wiring terminals in correct location. (Fig. 5) 15- Reinstall the cover (top side first) and gently push back extra

wire length into the hole in the wall. 16- Install security screw.

• If replacing an old thermostat, label the wires before removal of the old thermostat.

• Electronic controls are static sensitive devices. Discharge yourself properly before manipulation and installing the thermostat.

• Short circuit or wrong wiring may permanently damage the thermostat or the equipment.

• Anti-short cycling can be set to 0 minutes for equipment that posses their own anti cycling timer. Do not use that value unless the equipment is equipped with such internal timer. Failure to do so can damage the equipment.

• All VT7000 series thermostats are to be used only as

operating controls. Whenever a control failure could lead to personal injury and/or loss of property, it becomes the responsibility of the user to add safety devices and/or alarm system to protect against such catastrophic failures.

Fig.3

Fig.5

Location of PCB retaining tabs

Fig.4

Re-install terminal blocks

Thermostat assembly

(VT7300F5000B shown)

Fig.6

Terminal identification

iconics Part Numbers

Description / Application 2 & 4 Pipe On/Off 2 & 4 Pipe Floating Description / Application 2 & 4 Pipe Analog

T73xxA5x00(x)

T73xxC5x00(x)

2 & 4 Pipe On/Off

iconics Number

T73xxF5x00(x)

Internal Temperature X Internal Humidity

1- High Fan Speed 2- Medium Fan Speed 3- Low Fan Speed Fan-L Fan-L 3- Low Fan Speed Fan-L 4- 24 V~ Hot 24 V~ Hot 24 V~ Hot 4- 24 V~ Hot 24 V~ Hot 5- 24 V~ Com

6- Aux BO 5 7- Aux BO 5 8- BO 3 Open Heat BO 3 BO 3

9- BO 4 Close Heat 10- BO 1 Open Cool 11- BO 2 Close Cool 12- BI #1 BI 1 BI 1 12- BI #1 BI 1 13- RS RS RS 13- RS RS 14- Scom 15- BI #2 16- UI #3 COS / COC /SS

Fan-H Fan-H Fan-M Fan-M

24 V~ Com 24 V~ Com

BO 5-Aux BO 5-Aux BO 5-Aux BO 5-Aux

BO 2 BO 2

Scom Scom

BI 2 BI 2 UI 3 UI 3

Model Dependent

BO 4

BO 1

Internal Temperature Internal Humidity

1- High Fan Speed 2- Medium Fan Speed

5- 24 V~ Com

6- Aux BO 5 7- Aux BO 5

9- AO 2 Heat 10- AO 1 Cool Not used Blank Blank

14- Scom 15- BI #2 16- UI #3 COS / COC /SS

Model Dependent

Fan-H Fan-M

24 V~ Com

BO 5-Aux BO 5-Aux

AO 2 AO 1

Scom

BI 2 UI 3

Wiring

Power & Fan ( All models )

24 V~ transformer relay pack 3 speed 2 speed Single speed

Fan-H Fan-M Fan-L

High

Med

Low

High

Low

High

24 V~ Hot 24 V~ Com

Remote inputs ( All models )

BI 1 RS Scom

Remote wall sensor

- S3010W1000

- S3020W1000

BI 2 UI 3

Contact

- Door

- Remote Override

- Filter alarm

- service alarm

Contact

- Rem NSB

- Motion

- Window

SS ( supply sensor )

- S1010E1000

- S2000D1000

COS ( changeover sensor )

- S1010E1000

COC/NH

- Normally heat

- Closed contact = cold water

COC/NC

- Normally cool

- Closed contact = heat water

Auxiliary output ( All models )

- Dry contact to end device 24 V~ maximum #4 24 V~ Hot

#5 24 V~ Com

#6 #7

- 24 Vac power to relay #4 24 V~ Hot #5 24 V~ Com #6 #7

Main outputs wiring

VT7300A5x00(x) & VT7305AC5x00(x)

24 V~ Hot 24 V~ Com

BO2

VT7300C5x00(x), VT7305C5x00(x), VT7350C5x00(x) & VT7355C5x00(x)

24 V~ Hot 24 V~ Com

BO1 BO2

VT7300C5x00(x), VT7305C5x00(x), VT7350C5x00(x) & VT7355C5x00(x)

24 V~ Hot 24 V~ Com

BO1 BO2

2 Pipe applications 4 Pipe applications

On-Off control

24 V~ Hot 24 V~ Com

24 Vac

N.C. Heating / Cooling valve

24 Vac

24 Vac Com

Com

BO3

BO2

24 Vac Com

Com

24 Vac

24 Vac Com

Com

24 V~ Hot 24 V~ Com BO3

if N.O.

if N.C. if N.O. if N.C.

if N.O. if N.C.

Heating / Cooling valve

24 Vac Com

BO4 BO1 BO2

Floating control

24 V~ Hot 24 V~ Com BO3

Heating / Cooling valve

Open Com Close

BO4 BO1 BO2

Open Com Close

N.O. Heating valve N.C. Cooling valve

24 Vac

24 Vac Com

Com

24 Vac

24 Vac Com

Com

Heating valve

Heating valve Cooling valve

Cooling valve

Heating valve Cooling valve

Analog control

VT7300F5x00(x), VT7305F5x00(x), VT7350F5x00(x) & VT7355F5x00(x)

24 V~ Hot 24 V~ Com

Heating / Cooling valve

Com 24 Vac

O 1

0-10 Vdc

4 V~ Hot 4 V~ Com

O 2 O 1

Com 24 Vac 0-10 Vdc

Heating valve Cooling valve

Typical applications

Schematic Wiring Settings

2 pipe system cooling and/or heating: VT7300A5x00(x), VT7300C5x00(x) & VT7305C5x00(x) On / Off N.C. actuator

Normally Closed On/Off

Valve Cooling and/or Heating

3 Speed fan

Room Temperature

Fan-H

Fan-M

Fan-L

UI3 COS

24 V~ Com

24 V~ Hot

BO2 N.C.

24 Vac f an relays

High

Med

Low

Control Thermostat

Mandatory

• Pipe no = 2 pipes

• CntrltT yp = On/Off

• Fan Menu = 0 (L-M-H)

• FL time = as per actuator

If cooling only set::

• SeqOpera = 0 Cooling only If heating only set::

• SeqOpera = 1 Heating only If heat / cool auto-changeover with

a local water temperature sensor set:

• SeqOpera = 0 Cooling only

Optional supply water

temper at ure sensor

• UI3 = COS

2 pipe system cooling and/or heating: VT7300C5x00(x) & VT7305C5x00(x) Floating actuator

Modulating Floating

Valve Cooling and/or Heating

3 Speed fan

Room Temperature Control Thermostat

Fan-H

Fan-M

Fan-L

UI3 COS

24 V~ Com

24 V~ Hot

BO1 Open

BO2 Close

24 Vac f an relays

High

Med

Low

Mandatory

• Pipe no = 2 pipes

• CntrltTyp = Floating

• Fan Menu = 0 (L-M-H)

• FL time = as per actuator

If cooling only set::

• SeqOpera = 0 Cooling only If heating only set::

• SeqOpera = 1 Heating only If heat / cool auto-changeover with

a local water temperature sensor set:

• SeqOpera = 0 Cooling only

Optional supply water

temper at ure sensor

• UI3 = COS

2 pipe system cooling and/or heating: VT7300F5x00(x) & VT7305F5x00(x) Analog actuator

Modulating Analog

Valve Cooling and/or Heating

3 Speed fan

Room Temperature

Fan-H Fan-M

Fan-L

UI3 COS 0 V~ Com 24 V~ Hot

AO1

24 Vac f an relays

High

Med

Low

Control Thermostat

0 to 10

Vdc

Mandatory

• Pipe no = 2 pipes

• Fan Menu = 0 (L-M-H)

• RA/DA = as per actuator

If cooling only set::

• SeqOpera = 0 Cooling only If heating only set::

• SeqOpera = 1 Heating only If heat / cool auto-changeover with

a local water temperature sensor set:

• SeqOpera = 0 Cooling only

• UI3 = COS

Optional supply water

temper at ure sensor

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