Viconics VT7600 Installation Guide (First Release 1000 Series) - Manual

VT7600 Series
Programmable & Non-Programmable Thermostats
For Commercial HVAC Applications
(Issue Date June 17, 2008 – 028-0132 R8
Product overview
The VT7600 PI thermostat family is specifically designed for single stage
and multi-stage control of heating/cooling equipment such as rooftop and
self-contained units. The product features an intuitive, menu-driven, back-lit
LCD display which walks users through the programming steps, making the
process extremely simple. Accurate temperature 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 two digital inputs, 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. In addition, depending on the model, up
to three remote sensor inputs are available. All models contain a SPST
auxiliary switch, which can be used to control lighting or disable the
economizer function and a discharge air sensor input. For more advanced
applications, an economizer control logic has been integrated onto the
thermostat for use with proportional damper economizer actuators.
The additional following documentation is available on www.viconics.com
• Information on the LON models (VT76xxX1000E), is available on document ITG-VT7600-LON-Exx
• Information on the BACnet models (VT76xxX1000B), is available on document ITG-VT7600-BAC-Exx
• Information on the Wireless models (VT76xx0X1000W), is available on documents: ITG-VWG-40-BAC-
Exx and LIT-VWG-40-SETUP-Exx
Models available
Application 1 Heat / 1 Cool 2 Heat / 2 Cool
2 Heat / 2 Cool
with economizer
3 Heat / 2 Cool
heat pump
Model (programmable) VT7652A1000 VT7652B1000 VT7656B1000 VT7652H1000
Model (non-programmable) VT7600A1000 VT7600B1000 VT7605B1000 VT7600H1000
Features and benefits
Features Benefits
• PI time proportioning algorithm ⇒ Increased comfort , accuracy, and energy savings
• 2 digital inputs ⇒ 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 room and outdoor temperature sensor ⇒ Increase flexibility and functionality
• Auxiliary output ⇒ Can be used for lighting and/or economizer override
• Discharge air sensor ⇒ Can be used to monitor unit efficiency
• Intuitive, menu-driven programming (7 day, 2/4 events -
on programmable models only)
⇒ Can be used for all types of establishments
• Economizer output (0-10 V d.c.) (on economizer models
only)
⇒ Excellent retrofit opportunities
• Low/High balance point (on heat pump models only) ⇒ Protect and optimize systems performances
• 3 Heat/2 Cool (on heat pump models only) ⇒ Support single and two stages heat pump with one
auxiliary heat stage
028-0132R8_LIT-VT7600-E08.doc www.viconics.com / [email protected]
Fig.1 - VT7600 Series