Viconics VT7607 BACnet Integration Guide (First Release 1000 Series) - Manual

VT7600 Series
Programmable & Non-Programmable Thermostats
With Humidification & Dehumidification Strategy
For Commercial HVAC Applications
(Issue Date June 12, 2008 – 028-0171 R5
Product overview
The VT76x7 PI thermostat family is specifically designed for single stage
and multi-stage control of heating/cooling equipment such as rooftop and
self-contained units with humidifier and/or dehumidifier. The product features
an embedded complete humidity solution with an intuitive, menu-driven,
backlit LCD display that walks users through the programming steps, making
the process extremely simple. Accurate temperature & relative humidity
control is achieved due to the product’s PI time proportional control
algorithm, which virtually eliminates temperature offset associated with
traditional, differential-based thermostats.
All models contain one digital input, which can be set by the user to monitor
filter status, activate a remote temporary occupancy switch, and/or used as
a general purpose service indicator. The two models contain a SPST
auxiliary switch, which can be used to control lighting or disable the
economizer function and a discharge air sensor input.
The additional following documentation is available on
www.viconics.com
• Information on the LON models (VT76x7B1000E), is available on document ITG-VT76x7-LON-Exx
• Information on the BACnet models (VT76x7B1000B), is available on document ITG-VT76x7-BAC-Exx
• Information on the Wireless models (VT76x7B1000W), is available on documents: ITG-VWG-40-
BAC-Exx
and LIT-VWG-40-SETUP-Exx
Models Avalable
Application 2 Heat / 2 Cool
Model (programmable) VT7657B1000(X)
Model (non-programmable) VT7607B1000(X)
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
Features and benefits
Features Benefits
• Embedded humidification sequence (0-10 Vdc output)
and dehumidification sequence (dry contact)
⇒ Simplifies installation and reduce installation costs
• Internal RH sensor embedded ⇒ Eliminates components
• Proportional high limit override ⇒ Prevents costly damage due to over-humidification
• Humidity setpoint reset based on outdoor temperature ⇒ Saves energy and prevents window condensation in
colder climates
• RH sensor failure protection ⇒ Prevents humidity water damage
• PI time proportioning algorithm ⇒ Increased comfort , accuracy, and energy savings
• 1 digital input ⇒ Adds functionality
• Smart fan ⇒ Saves energy during night mode
• Unique configuration key ⇒ Minimizes parameter tampering
• Lockable keypad ⇒ Tamper proof, no need for thermostat guards
• Freeze protection ⇒ Prevents costly freeze damage
• EEPROM memory ⇒ No loss of program
• 6 hour reserve time for clock ⇒ No need to reprogram day/time after power shortage
• Remote outdoor temperature sensor ⇒ Increase flexibility and functionality
• Auxiliary output ⇒ Can be used for lighting and/or economizer override
• Discharge air humidity sensor ( 0-10 Vdc input ) ⇒ Can be used to limit supply RH levels
• Intuitive, menu-driven programming (7 day, 2/4 events -
on programmable models only)
⇒ Can be used for all types of establishments
028-0174 R5_LIT-VT76x7-E05.doc www.viconics.com / [email protected]
Fig.1 - VT76x7 thermostat