Contemporary Controls BASstat BAST-221C-BW2 Installation Manual page 2

Mechanical Operation Overview
A unique Device Instance number throughout the entire BACnet internetwork is required to distinguish the device from all other BACnet devices. When more than one
BASstat is installed at the same time, their Device Instance numbers must be configured prior to connecting to the BACnet/IP network or BACnet communication will fail due
to duplicate instances. Device instance can be modified in Engineering Menu items (dEVH) – high bytes and (dEVL) – low bytes; Device Instance = (dEVH)*1000+(dEVL).
To enter the Engineering Menu, hold down the UP and DOWN buttons simultaneously for 5 seconds. Use the UP and DOWN buttons to navigate through the menu and
change menu item values. Use the MODE button to enter a menu item and accept/confirm a selected value. To exit the Engineering Menu, navigate to menu item (End) and
press MODE, or the menu will exit automatically when not used. The BASstat has a built-in space temperature sensor with provision for remote wired 3kΩ NTC thermistor
sensor or temperature value can be sent by another device over the BACnet network.
The default control type is Cooling and Heating with Auto-changeover. Four main control types are available: Cooling and Heating with Auto-changeover, Cooling or Heating
with Manual-changeover, Cooling only, and Heating only. These control types are selectable from Engineering Menu (tyPE) or BACnet object MSV8. User-side comfort
control is accomplished with six buttons – mode (Heat, Cool, or Ventilation – dependent on control type chosen from Engineering Menu (tyPE) or BACnet object MSV8), fan,
raise, lower, set, and power. There is also options to lock select buttons or all buttons on the thermostat. A large LCD display indicates setpoint, space temperature and
current mode of operation using graphical icons. By default, the BASstat thermostat will not provide Fan output signal when in Heat Mode since most HVAC comfort systems
provide their own Fan control signal based on a delay after a call for heating. This can be configured from Engineering Menu item (F-Ht) or BACnet object BV15 with a default
value of 0. To enable fan output for heating, set this value to 1.
Reset settings can be performed from Engineering Menu item (rSt) which will reset all parameters including communication (MAC and Device Instance) and all control
algorithm values back to factory-programmed defaults.
For complete datasheet and details on BASstat, support, or compliance information, please download our BASstat User Manual and Data Sheet at:
https://www.ccontrols.com/basautomation/basstat.php
TD150905-0IA
Contemporary Control Systems, Inc. reserves the right to make changes in the specifications of the product described within this manual at any time without notice and without obligation of Contemporary Control Systems, Inc.
to notify any person of such revision or change.