Veris Industries VH7200 SERIES Install - Manual

VH7200 Humidistat Series
For Humidification & Dehumidification Control
For Commercial HVAC Applications
(Issue Date September 29, 2008 – 028-0208 R4)
Product overview
The VH7200 humidity controller family is specifically designed for control of
humidification and dehumidification equipment such as steam header direct
injection, desiccant wheel, or stand alone humidification / dehumidification
equipment. The product features a complete embedded humidity control
solution with an intuitive backlit LCD display that walks the installer through the
configuration steps, making the process extremely simple. Accurate relative
humidity control is achieved due to the product’s unique PI time proportional
control algorithm, which virtually eliminates humidity offset associated with
traditional, differential-based humidity controllers.
All models contain a binary input, which can be set by the user to monitor an
electrode humidifier canister service status or may be used as a general
purpose service indicator. Models are available which contain more advanced
features such as discharge humidity proportional high limit, and indoor humidity
setpoint reset based upon outdoor air temperature to conserve energy and
eliminate condensation on windows and structure.
Fig.1 VH7200 series humidistats
The additional following documents are available at:
www.viconics.com
•
Information on the BACnet models (VH72xxX1000B), is available on document ITG-VH7200-BAC-Exx
Models available
Application Model Number
Humidification
Output(s)
Dehumidification
Output
Model with Outdoor reset & Proportional High Limit VH7270K1000 (X)
0-10 Vdc &
On/Off 24 Vac
On-Off 24 Vac
Model with Outdoor reset & Proportional High Limit VH7270F1000 (X) 0-10 Vdc On-Off 24 Vac
Models with outdoor reset only VH7200A1000 (X) On/Off 24 Vac On-Off 24 Vac
* NEW * Duct Mount Model with Outdoor reset &
Proportional High Limit
VH7270D1000 (X) 0-10 Vdc On-Off 24 Vac
(X) model number represents available communication options: X=none for Stand-alone and X=B for BACnet MS-TP.
Features and benefits
Features Benefits
• Embedded humidification and dehumidification
sequences
⇒ Simplifies installation and reduce installation
costs
• Embedded internal RH sensor ⇒ Eliminates components
• Proportional high limit override
• (VH7270 Models Only) ⇒ Prevents costly damage due supply humidity
condensation
• Humidity setpoint reset based on outdoor
temperature
⇒ Saves energy and prevents window
condensation in colder climates
• Sensor failure protection ⇒ Prevents water damage
• PI time proportioning algorithm ⇒ Increased comfort, accuracy, and energy savings
• Binary input ⇒ Adds functionality (Trigger service alarms )
• Unique configuration menu routine ⇒ Minimizes parameter tampering
• Lockable keypad ⇒ Tamper proof, no need for humidistat guards
• EEPROM memory ⇒ No loss configuration parameters
• Optional remote humidity sensors ⇒ Increase flexibility and functionality
028-0208 R4_LIT-VH72x0-E14.doc www.viconics.com / [email protected]