Installation Manual (First Release 1000 Series) Instruction Manual

ManualsBrandsViconics ManualsFor HomeVT7300

VT7300 Series

24 Vac Low Voltage Fan Coil Thermostats

For Commercial and Lodging HVAC Applications

(Issue Date: August 10, 2007 – 028-0125 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.

All models contain can control three, two or single fan speed. 3 additional inputs are also

provided for various functions.

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

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

or auxiliary reheat.

The additional following documentation is available on www.viconics.com

• Information on the LON models (VT73xxX1000E), is available on document ITG-VT7300-LON-Exx

• Information on the BACnet models (VT73xxX1000B), is available on document ITG-VT7300-BAC-Exx

Models available

Viconics

number

VT7300A1000

VT7300C1000

VT7350C1000

VT7305A1000

VT7305C1000

VT7355C1000

VT7300F1000

VT7350F1000

VT7305F1000

VT7355F1000

Application

2 & 4

Pipe

On/Off

2 & 4 Pipe

Floating & On/Off

2 & 4

Pipe

On/Off

2 & 4 Pipe

Floating & On/Off

2 & 4 Pipe

Analog 0-10 Vdc

RH sensor

No No Yes No No Yes No Yes No Yes

Market Commercial / Institution Hotels / Lodging

Commercial /

Institution

Hotels / Lodging

Features and benefits

Features Benefits

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

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

• 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 ⇒ Increased occupant comfort in cooling mode by reducing

humidity and offer less fan noise in all mode of operation

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

• Auxiliary output ⇒ Can be used for lighting or reheat

www.viconics.com

sales@viconics.com

Summary of content (17 pages)

PAGE 1
VT7300 Series 24 Vac Low Voltage Fan Coil Thermostats For Commercial and Lodging HVAC Applications (Issue Date: August 10, 2007 – 028-0125 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.
PAGE 2
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): remote NSB using a motion detector. The occupancy will now be set as per the binary input. Contact opened = Unoccupied.
PAGE 3
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) A) 12345- Location: Should not be installed on an outside wall. Must be installed away from any heat source. Should not be installed near an air discharge grill. Should not be affected by direct sun radiation. Nothing must restrain vertical air circulation to the thermostat. Fig.
PAGE 4
Terminal identification Viconics number Description / application Internal temperature Internal humidity 1- High Fan Speed 2- Medium Fan Speed 3- Low Fan Speed 4- 24 V~ Hot 5- 24 V~ Com 6- Aux BO 5 7- Aux BO 5 8- BO 3 Open Heat 9- BO 4 Close Heat 10- BO 1 Open Cool 11- BO 2 Close Cool 12- BI #1 13- RS 14- Scom 15- BI #2 16- UI #3 COS / COC /SS VT73xxA10xx 2 & 4 Pipe On/Off VT73xxC10xx 2 & 4 Pipe Floating 2 & 4 Pipe On/Off X X Model dependent Fan-H Fan-M Fan-L 24 V~ Hot 24 V~ Com Fan-H Fan-M Fan-L 2
PAGE 5
Main outputs wiring 2 Pipe applications 4 Pipe applications On-Off control VT7300A1000 & VT7305AC1000 24 V~ Hot 24 V~ Com N.C. Heating / Cooling valve 24 Vac Com BO2 24 V~ Hot 24 V~ Com BO3 BO2 24 Vac Com N.O. Heating valve 24 Vac Com N.C. Cooling valve VT7300C1000, VT7305C1000, VT7350C1000 & VT7355C1000 24 V~ Hot 24 V~ Com Heating / Cooling valve BO1 BO2 if N.O. if N.C. OR 24 Vac Com 24 V~ Hot 24 V~ Com BO3 if N.O. OR BO4 if N.C. BO1 if N.O. BO2 if N.C.
PAGE 6
Typical applications Schematic Wiring Settings 2 pipe system cooling and/or heating ( VT7300A1000, VT7300C1000 & VT7305C1000 ) On / Off N.C. actuator Mandatory 24 Vac fan relays • Pipe no = 2 pipes High Normally Closed On/Off Fan-H • CntrltTyp = On/Off Valve Cooling and/or Heating Fan-M Med • Fan Menu = 0 (L-M-H) • FL time = as per actuator Fan-L 3 Speed fan Low UI3 COS If cooling only set:: • SeqOpera = 0 Cooling only 24 V~ Com 24 V~ Hot Room Temperature Control Thermostat BO2 N.C.
PAGE 7
Schematic Wiring Settings 4 pipe system cooling and heating ( VT7300C1000 & VT7305C1000 ) On / Off N.C.
PAGE 8
Remote sensor accessories Model no. S3010W1000 S3020W1000 S2060A1000 S2000D1000 Description Wall mounted temperature sensor Wall mounted temperature sensor with override button and occupancy status LED Averaging temperature sensor Duct mounted temperature sensor Remote mount temperature sensors use 10K type 2 NTC thermistors. Features: • Each sensor can be configured for various averaging combinations • Optional occupancy led • Optional override key FIG.
PAGE 9
Programming and status display instructions Status display The thermostat features a two-line, eight-character display. There is a low level back-light level that is always active and can only be seen at night. When left unattended, the thermostat has an auto scrolling display that shows the actual status of the system. There is an option in the configuration menu to lockout the scrolling display and to only present the room temperature and conditional outdoor temperature to the user.
PAGE 10
Installer configuration parameter menu Configuration can be done through the network or locally at the thermostat. • To enter configuration, press and hold the middle button (°C/°F or Override) for 8 seconds • Press the same middle button repetitively to scroll between all the available parameters • Use the up and down key to change the parameter to the desired value. • To acknowledge and save the new value, press the middle button again.
PAGE 11
• 11 Mode button menu sequence.
PAGE 12
Get From Thermostat Get From another device configuration utility Default value = 0 Range is: 0 to 254 Conditional parameter to Wireless models (VT730xX1000W) This parameter will only appear when a wireless network adapter is present.
PAGE 13
BI2 * Binary input no.2 configuration Default value = None UI3 * Universal input no.3 configuration Default value = None (None): No function will be associated with the input (Door Dry) Door contact & Motion detector: This configuration is only functional if binary input #1 is set to Motion NO or Motion NC. BI1 is connected to a motion detector & BI2 is connected to a door contact switch. With this sequence enabled, the occupancy is now dictated through those 2 inputs.
PAGE 14
AutoMode * Enables Auto menu for Mode button Default value = Off C or F * Sets scale of the thermostat Default value = °F %RH disp * Local %RH Display Enables Auto function for the mode button For sequences 2, 4 & 5 only On = Auto active (Off-Cool-Heat-Auto) Off = auto not active (Off-Cool-Heat) °F for Fahrenheit scale °C for Celsius scale On hotel models, this sets the default value when the thermostat powers up RH models only Enables the display of humidity below the room temperature on the display D
PAGE 15
DHumiLCK Dehumidification network lockout Locks out dehumidification variable Default value: On = Authorized %RH set * Dehumidification setpoint Default is 50 % RH DehuHyst * Dehumidification hysterisys Default is 5 % RH DehuCool * Maximum Dehumidification Cooling output Default is 100 % Unocc HT Unoccupied heating setpoint Default value = 62 °F Unocc CL Unoccupied cooling setpoint limit Default value = 80 °F heat max * Maximum heating setpoint limit Default value = 90 °F ( 32 °C ) cool min * Minimum coo
PAGE 16
aux cont * Auxiliary contact function & configuration Default value = 0 Not Used 0 Aux contact function not used or used for reheat IF SEQUENCE IS SET TO REHEAT THROUGH NETWORK OR LOCAL, Ignore this parameter ( Sequence 2, 3 or 5 ) The output will directly follow the occupancy of the thermostat 1 Auxiliary NO, Occupied = Contact Closed / Unoccupied = Contact Opened 2 Auxiliary NC, Occupied = Contact Opened / Unoccupied = Contact Closed Output to follow directly main occupancy and Fan on command Typicall
PAGE 17
Specifications Thermostat power requirements: Operating conditions: Storage conditions: Sensor: Resolution: Control accuracy: Occupied and unoccupied setpoint range cooling: Occupied and unoccupied setpoint range heating: Room and outdoor air temperature display range Proportional band for room temperature control: Binary inputs: Contact output rating: Wire gauge Dimensions: Approximate shipping weight: Agency Approvals: UL FCC Industry Canada CE C-Tick 4.