It will communicate to the supply blower, inverter board, and other communi- cating devices or sensors that are enabled on the heat pump. The Aurora DOAS controller is the application controller that provides all the decision making for the DOAS unit, provides setpoints and overrides to the heat pump and energy recovery units.
Constant Air Volume (CAV) By adjusting the duct static pressure setpoint in the Aurora Premium control to constant, it can turn the VAV controller into a CAV control application. With the exception of the blower modulation, the system will control the compressor to a leaving air temperature and operate with all of the same input configuration points.
Aurora Base Energy (“N”) The Aurora Base Energy is the standard controls package that includes the necessary sensors on the energy recovery device for DOAS operation. These sensors are listed below.
INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS Safety Features The following safety features are provided to protect the energy recovery device, wiring, and other components from damage caused by operation outside of design conditions. Fuse – A 3 amp automotive type plug-in fuse provides protection against short circuit or overload conditions.
• a sticker on the back of the main translator board • a Module Status report (modstat) from WebCTRL , or thru the Aurora Touch Interface by accessing the “Module Setup” menu. FCC Compliance This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules.
INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS Control Inputs All control system input values may be read from sensors physically connected to the control system, either communicating or discrete, or they may be alternatively supplied via Modbus from a BAS controller or other appropriate Modbus master controller.
INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS Control Outputs Discrete AEC Outputs: Outdoor Air Damper – The Outdoor Air Damper output will be a 24 VAC output signal connected to the RV output on the AEC control.
INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS Confi guration Settings Configuration setting values will be stored in non-volatile DCV Enable (DCV) memory and may be adjusted using an Aurora Touch HMI or through the BAS interface. The DCV Enable value is a Boolean control point to enable or disable demand control ventilation operation.
Page 14
INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS Confi guration Settings cont. Supply Filter Base DP (SFBaseDP) The Supply Filter Base DP is the differential pressure value of the Supply Filter Differential Pressure Sensor with a clean filter. The value will be set at system start-up by a technician with the system blower operating.
INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS System Operation - System Operating Modes Cooling Design Energy Recovery Dew Point Economizer Energy Recovery Compressor Where Needed Energy Recovery Cooling In the energy recovery cooling mode, the bypass dampers...
Page 16
INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS System Operation - Target Supply Air Temperature Determination Nominal Target Supply Air Temperature Supply Air Temperature Reset The Target Supply Air Temperature value will be either Supply Air Temperature Reset may adjust the target NeutTgt, HeatTgt, or CoolTgt.
Page 17
INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS System Operation - Energy Recovery a. Energy Recovery Wheel Rotation Warning Outdoor Air Damper An Energy Recovery Wheel Rotation Warning will The Outdoor Air Damper output will always be activated...
Page 18
INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS System Operation - Energy Recovery cont. e. Over / Under Voltage Fault An Over/Under Voltage Fault condition exists when the control voltage is outside the nominal operating range of 18VAC to 30VAC. For an Over/Under Voltage...
Page 19
INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS System Operation - Heat Pump Compressor The compressor will operate in the appropriate mode and at the appropriate capacity to maintain the supply air temperature setpoint when required and modulating hot gas reheat is not active or present.
Page 20
The schedule can be edited with the operate the system. A “G” input will activate the system to Aurora Touch HMI. See the table below for details on the operate using the NeutTgt Target Supply Air Temperature pre-programmed weekly schedule.
INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS System Operation - Standalone Control Supply differential Filter Supply air Optical Outdoor air (Plenum) pressure (airflow differential bypass wheel enthalpy Global Rnet measurement) pressure damper sensor Supply air temperature re e Filter &...
Page 22
INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS Revision Guide Pages: Description: Date: Cover Naming Update Jan 2022 First Published May 2021...
Page 23
INTEGRATED COMMERCIAL AURORA CONTROLS FOR VERSATEC 700 INDOOR DOAS APPLICATIONS...
Need help?
Do you have a question about the Aurora and is the answer not in the manual?
Questions and answers