Greenheck Microprocessor Controller Manuals

® Document 483586 Microprocessor Controller for Dedicated Outdoor Air System Microprocessor Controller for DOAS 1 ® Reference Guide for Microprocessor Controller Please read and save these instructions for future reference. Read carefully before attempting to assemble, install, operate or maintain the product described. Protect yourself and others by observing all safety information. Failure to comply with these instructions will result in voiding of the product warranty and may result in personal injury and/or property damage. DOAS Technical Support Call 1-866-478-2574 Program Features The microprocessor controller offers control through easy monitoring and adjustment of unit parameters by way of a lighted graphical display and an integral push- button keypad. Pre-Programmed Operating Sequences The controller has been pre-programmed to offer multiple control sequences to provide tempered air. Factory default settings allow for easy setup and commissioning. The sequence parameters are fully adjustable. Refer to the Sequence of Operation for details. BMS Communication The user can remotely adjust setpoints, view unit status points and alarms. The microprocessor controller is capable of communicating over several protocols: • BACnet® MSTP • Modbus RTU • BACnet® IP • Modbus TCP • LonWorks® Reference Points List for a complete list of BMS points. Internal Time Clock (Schedule) The controller has an internal programmable time clock, allowing the user to set occupancy schedules for each day of the week. The controller option also has morning warm-up and cool down capability for improved comfort at the time of occupancy. Alarm Management The microprocessor controller will monitor the unit’s status for alarm conditions. Upon detecting an alarm, the controller will record the alarm description, time, Introduction date, and input/output status points for user review. A digital output is reserved for remote alarm indication. Alarms are also communicated via BMS (if equipped). Occupancy Modes The microprocessor controller offers three modes of determining occupancy: a digital input, the internal time clock or the BMS. If in the unoccupied mode, the unit will either be shut down, continue normal operation utilizing adjustable unoccupied setpoints, recirculate with unoccupied setpoints or will cycle on to maintain adjustable unoccupied room temperature and humidity setpoints (room temperature and humidity sensor is optional). Remote Display Panel (if equipped) A touch pad display panel allows for remote monitoring and adjustment of parameters, allowing ease of control access without going outdoors. WARNING Electrical shock hazard. Can cause personal injury or equipment damage. Service must be performed only by personnel that are knowledgeable in the operation of the equipment being controlled. WARNING Mechanical high static protection cutoffs must be installed by others to protect the system and equipment from over-pressurization when using factory provided control sensors. The manufacturer does not assume responsibility for this. DOAS v3.001