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Contemporary Controls BASstat BAST-321HP-BW2 User Manual

Wireless bacnet communicating thermostat for 2-stage heat pump operation
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BAST-321HP-BW2
Wireless BACnet Communicating Thermostat for 2-stage Heat Pump Operation
BASstat
Wireless Heat Pump Thermostat
User Manual
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# UM-15094000-AA0

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Summary of Contents for Contemporary Controls BASstat BAST-321HP-BW2

  • Page 1 BAST-321HP-BW2 Wireless BACnet Communicating Thermostat for 2-stage Heat Pump Operation BASstat Wireless Heat Pump Thermostat User Manual # UM-15094000-AA0...
  • Page 2 Trademarks BASautomation, Contemporary Controls, and CTRLink are registered trademarks of Contemporary Control Systems, Inc. BACnet is a registered trademark of the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. Powered by Sedona Framework is a trademark of Tridium, Inc. Other product names may be trademarks or registered trademarks of their respective companies.

  • Page 3: Table Of Contents

    Contents Introduction ......................... 3 Features and Benefits ................... 4 Product Image and Main Features ................ 5 BASstat 321C-BW2 ....................5 Specifications ......................6 Inputs ........................6 Outputs ......................... 6 Communication ..................... 6 Electrical ....................... 6 Environmental ....................... 7 Electromagnetic Compatibility ................7 Mechanical (all dimensions are in mm) ..............

  • Page 4: Introduction

    NTC thermistor sensor or temperature value can be sent by another communicating device over the BACnet network. The BASstat is configurable locally using the Engineering Menu or via a network connection to a BACnet client. Contemporary Controls’ free BACnet Discovery Tool can be used for initial configuration of the thermostat over BACnet.

  • Page 5: Features And Benefits

    1.1 Features and Benefits Stand-alone thermostat algorithm or fully BACnet network-controllable • BTL listed with B-ASC device profile for integration into BACnet networks • 24VAC (+/-10%) power input • BACnet communication - BACnet/IP over Wi-Fi and can be integrated into any •...

  • Page 6: Product Image And Main Features

    1.2 Product Image and Main Features BASstat 321C-BW2 UM-15094500-AA0 Page 5...

  • Page 7: Specifications

    Specifications 2.1 Inputs Item Description Temperature Display Range 14 to 140°F (-10 to 60°C) Temperature Display Resolution 0.1°F (0.1°C) Temperature Accuracy ±1.8°F (±1.0°C) with all outputs off Energy Savings Input Provision for external occupancy sensor Setpoint Range 32-122°F (0-60°C) in 0.5° (°F or °C) increments Remote Temperature Sensor Provision for NTC Type 3kΩ...

  • Page 8: Environmental

    2.5 Environmental Item Description Operating Temperature 32°F to 122°F (0 to 50°C) Storage Temperature 14°F to +140°F (-10°C to 60°C) Relative Humidity 5 to 95% non-condensing 2.6 Electromagnetic Compatibility The BAST-321HP-BW2 complies with the following specifications and bears the CE mark in accordance with the provisions of the Electromagnetic Compatibility (EMC) Directive 2004/108/EC based on the following specifications: Standard...

  • Page 9: Mechanical (All Dimensions Are In Mm)

    2.7 Mechanical (all dimensions are in mm) Mounts directly onto wall, panel, standard 65×65mm junction box (hole pitch 60 mm) or standard 2×4-inch vertical junction box (hole pitch 83.5mm) Width: 94mm Height: 118mm Depth: 34mm UM-15094500-AA0 Page 8...

  • Page 10: Installation

    Installation The BAST-321HP-BW2 is intended for surface-mount installation on an interior wall, away from direct sunlight or direct air movement. The display (top half) can be removed from its base by loosening the small Philips screw at the bottom of the display. Once the display is removed from the base, the base can be mounted onto the wall with appropriate fasteners.

  • Page 11: Power Supply Precautions

    3.3 Power Supply Precautions Internally, the BASstat utilizes a half-wave rectifier and can share the same AC power source with other half-wave rectified devices. Sharing AC power with full-wave rectified devices is NOT recommended. AC power sources that power several half-wave devices have a common secondary connection called COMMON, LO, or GROUND.

  • Page 12: Operation

    Operation 4.1 User Mode User-side control is accomplished with six buttons – MODE (Heat, Cool, or Ventilate), FAN (Auto or On), UP, DOWN, SET, and POWER. There are options to lock the panel buttons to limit user access if so required. A large LCD display indicates setpoint, space temperature, occupancy status, and current mode of operation using graphical icons.
  • Page 13 User Mode Thermostat Operation Item Description Remarks Normal Display Display current room or set-point Use the (SP) parameter in temperature. the Engineering Menu or [MSV6] Display to choose Current room or Set- point temperature on display. Temperature Set the desired temperature. The [AV0] / [AV3] Cool / Heat Setpoint Setting Occupied and [AV8] / [AV9]...

  • Page 14: Control Type

    User Mode Flow Chart 4.2 Control Type Control Type, System Mode and Algorithm Configuration System modes available to the user are dependent on control type. Multi-stage Cooling or Heating with Auto Changeover – This the default control type in this thermostat. Mostly used for standalone operation. The thermostat will switch between Cool and Heat modes automatically.
  • Page 15 BACnet controlled – In this control scheme, the built-in thermostat algorithm can be bypassed, and the thermostat can be controlled over the BACnet network with commands from the supervisor device. The logic executing in the supervisor (such as Niagara or Sedona logic) can control the thermostat over the BACnet network. To put the thermostat in BACnet network control mode, use the Lock [AV18] object bit 9: Control DOs by thermostat algorithm “0”...
  • Page 16 of each stage before changing its state. • Maximum cycles per hour will check cycle times in a particular hour. When the cycle times reach the setting maximum cycles in that hour, it won’t allow more cycles until next hour. When the stage state change is pending by Short Cycle Delay or Maximum •...
  • Page 17 Floating Deadband The Heat and Cool temperature setpoints could be “attached” together. This means that as one setpoint is adjusted and “hits” against the deadband region, it will “push” the deadband region and the other setpoint along the temperature setpoint axis to allow for adjustment while maintaining the configured deadband.

  • Page 18: Engineering Mode Menu

    LCD. 4.3 Engineering Mode Menu Thermostat configuration can be performed using the engineering menu or by controlling BACnet objects using a BACnet client tool such as Contemporary Controls free BACnet Discovery Tool (BDT). It is highly suggested that engineering mode be operated by trained installers only, because it is related to system parameters that will affect the control results.
  • Page 19 menu item selection. After another 10 seconds, the display will return back to User mode. Settings are not changed unless confirmed using the MODE button. To leave Engineering Mode, rotate till (End) menu item appears and press the • MODE button. Alternately, pressing no buttons for 10 seconds will return the thermostat back to User mode.
  • Page 20 Engineering Menu Items Table – BAST-321HP-BW2 °C Scale °F Scale Item Mnemonic Description Step Default Range Default Range Deadband 0~10 0~18 0.5 (°C/°F) ESIC Unoccupied(ESI) cooling set point 25~35 82.5 65.0~95. 1.0 (°C/°F) ESIH Unoccupied(ESI) heating set point 10.0~22. 50.0~77. 1.0 (°C/°F) Integral Time and Output Cycle Time 0~500...
  • Page 21 °C Scale °F Scale Item Mnemonic Description Step Default Range Default Range 0: N.O. ESI (DI1) digital sensor contact definition 0 1: N.C. rE-C Not used RE-h Not used Space Temperature Source 0: built-in remote sense 2: assigned through Display present temperature value of or 0: display PV -SP- current set-point for LCD...
  • Page 22 °C Scale °F Scale Item Mnemonic Description Step Default Range Default Range 1: C&H Manual tyPE Control Type 2: C&H Auto NOTE: Cool only and Heat only types OPL2 Minimum Output for AO2 (not used) SPA2 Span Offset for AO2 (not used) Hrtr Communication Heartbeat Minimum 10~3600...
  • Page 23 °C Scale °F Scale Item Mnemonic Description Step Default Range Default Range Phy3 MAC address 5th & 6th bytes hhhh hhhh h: 0~F in hex IP-1 1st byte of IPv4 address 0~255 0~255 IP-2 2nd byte of IPv4 address 0~255 0~255 IP-3 3rd byte of IPv4 address...
  • Page 24 Lock Function Setup and Examples The 16-bit binary encoded decimal register accessed through Lock [AV17] BACnet object and LOC engineering menu item is used to enable/disable features in the thermostat. The first 10 bits are used (bit 0 ~ bit 9), bits 10~15 are reserved/unused. Bits are represented by their decimal values and are added or subtracted to toggle from “0”...

  • Page 25: Bacnet Objects And Network Configuration

    Engineer Menu, or once installed on the BACnet network, configuration can also be altered using BACnet commands. Network command-based configuration can also be accomplished using a Wi-Fi enabled laptop/computer/tablet/smart phone and Contemporary Controls’ free BACnet Discovery Tool. Wi-Fi Communication Configuration...
  • Page 26 The BAST-321HP-BW2 will initially boot up as a Wi-Fi Access Point to allow for IP configuration. This requires connecting to the thermostat as an access point for initial configuration using a Wi-Fi enabled laptop/computer/tablet/smart phone. Look for the BAST-321HP-BW2 with its unique SSID of “WiFi-623B-xxxx” and no access point passphrase by default (simply click to connect to Access Point).
  • Page 27 After initial connection using laptop or tablet or smart phone, the Wi-Fi mode in the thermostat can be changed to Infrastructure mode. The local Wi-Fi router/access point can be selected from the Available AP drop-down list, or an AP SSID can be entered manually. Enter the AP Passphrase to authenticate and connect to the AP.
  • Page 28 The thermostat supports DHCP addressing and will acquire an IP address from the router/access point automatically if you chose Enable next to DHCP. If you chose Disable, you must assign an IP Address, Network Mask, and Gateway Address within the Wi-Fi router IP subnet manually.
  • Page 29 Click OK on the confirmation message and wait 20 seconds for the reboot process to complete. While rebooting, the thermostat will display “DP” icon in the lower right corner to indicate it is in the process of searching and connecting to the AP. Once the “DP” stops flashing, the thermostat has successfully connected to Wi-Fi access point.
  • Page 30 Communication across IP subnets requires a Broadcast Management Device (BBMD) device or support for Foreign Device Registration (FDR) feature. The BASstat supports the FDR feature to register with a remote BBMD which could be a BACnet client or a BMS headend.
  • Page 31 A reboot of the thermostat is required for new IP configuration to take effect. Click the Save & Restart button to reboot the thermostat, and you will be prompted to confirm the restart. Click OK to Save New Settings and Restart or click Cancel to revisit IP configuration. When OK is clicked, a confirmation is displayed to indicate configuration is stored in the thermostat’s EEPROM.
  • Page 32 BACnet Object Table - BW2 Wi-Fi Model (BACnet/IP) Object name Type & Instance Object Property (Readable/Writable) Range BACnet Thermostat Device 600001 Model Name (R) 623C Application Software Version (R) Apr-13-2021 Object Identifier (R) Object Name (R/W) 32 characters (max.) Object name Type &...
  • Page 33 Object name Type & Readable/ Description Range and Definition Instance Writable Current Dew Point Current Dew Point -999~9999: -99.9～999.9 AI 5 °C/°F Current CO AI 6 Current CO Reading 0~3000: 0~3000 ppm Reading Control Valve AI 7 Control Valve Feedback 0～1000 (0.0%～100.0%) Feedback Modulating/ Floating...
  • Page 34 Object name Type & Readable/ Description Range and Definition Instance Writable Integral-Cycle Time AV 10 Integral Time and 0~500 (Sec.) Output Cycle Time Analog Minimum AV 11 Minimum Output Output for AO1 Voltage in Digital 0~125 (LSB) Value When Reach Span Offset for AO1 AV 12 Span Offset for AO1 -55~0 (LSB)
  • Page 35 Object name Type & Readable/ Description Range and Definition Instance Writable Modulating/floating Percentage of Modulating/ 0～100 (0%～100%) Control Out AV 19 Floating Control Output Percentage 0~4194302 (Note: Changing this value needs to unlock modification for communication Device Instance AV 20 Device Instance parameters in advance.
  • Page 36 Object name Type & Readable/ Description Range and Definition Instance Writable Minimum Cooling Minimum Cooling °C:0.0 ~50.0 Temperature Setpoint AV 39 Temperature Setpoint °F: 32.0~122.0 Minimum Heating Minimum Heating °C:0.0 ~50.0 Temperature AV 40 Temperature Setpoint °F: 32.0~122.0) Setpoint Minimum Fan Minimum Fan Output at Auto Output Fan Mode (for Modulating...
  • Page 37 Object name Type & Readable/ Description Range and Definition Instance Writable Relay 7 Status BI 9 Status of Relay 7 (Fan) 0: Off, 1: On Dl 1 Status BI10 Status of Digital Input 1 0: Off, 1: On Dl 2 Status BI11 Status of Digital Input 2 0: Off, 1: On...
  • Page 38 Object name Type & Readable/ Description Range and Definition Instance Writable On-Off Control BV 5 On/Off Status of Thermostat 0: Off, 1: On 0: °C Temperature Scale BV 6 °C/ °F 1: °F Relay 1 Control On/Off Control of Relay 1 0: Off, 1: On (O/B Valve) Relay 2 Control...

  • Page 39: Warranty

    Warranty Contemporary Controls (CC) warrants this product to the original purchaser for two years from the product shipping date. Product returned to CC for repair is warranted for one year from the date the repaired product is shipped back to the purchaser or for the remainder of the original warranty period, whichever is longer.

  • Page 40: Returning Products For Repair

    United States China United Kingdom Germany Contemporary Control Contemporary Controls Contemporary Controls Ltd Contemporary Controls GmbH Systems, Inc. (Suzhou) Co. Ltd Tel: +1-630-963-7070 Tel: +86 512 68095866 Tel: +44 (0)24 7641 3786 Tel: +49 341 520359 0 Fax: +1-630-963-0109...

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