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DocuSign Envelope ID: 9826C043- 4C32- 49CD- A4CC- DC28ABAB7CE7 <br />SECTION 239500 - MULTI - INDOOR VRV SYSTEM <br />• Setpoint <br />xxi. Filter sign reset for indoor units <br />xxii. Forced indoor units off. <br />6) The Building Management System may choose to monitor and control <br />the following BACnet objects linked to iTM control logic: <br />i. Enable /Disable iTM Schedule operation. <br />ii. Enable /Disable iTM Auto Changeover Operation. <br />iii. Set Timed Override Minutes. <br />• Monitor and configure timer extension on iTM (30, 60, 90, <br />120, 150, 180 minutes) <br />iv. System forced off <br />• Enable /Disable all emergency stop programs that are <br />registered on the iTM. <br />7) Schedule <br />The BMS shall utilize iTM schedule function or support weekly schedule settings <br />through its programming. <br />i. BMS schedule shall support the indoor unit: <br />• Each scheduled event shall specify time and target group <br />address. <br />• Each scheduled event shall include Occupancy Mode, <br />Operation Mode, Occupied Cooling Setpoint, Occupied <br />Heating Setpoint, and Unoccupied cooling setpoint, Un- <br />occupied heating setpoint, Remote Controller On /Off <br />Permit/Prohibit, Remote Controller Mode Permit /Prohibit, <br />Remote Controller Setpoint Permit/Prohibit, and Timed <br />Override Enable. <br />• An override shall be provided for use enabling indoor unit <br />operation during the unoccupied period by the BMS pro- <br />gramming. <br />8) Auto Changeover <br />The BMS shall utilize iTM Auto changeover function or support auto - changeover <br />through its programming. <br />i. Auto - change shall provide changeover for both Heat Pump and <br />Heat Recovery systems based upon the group configurations. <br />This will allow the optimal room temperature to be maintained <br />by automatically switching the indoor unit's mode between Cool <br />and Heat in accordance with the room temperature and setpoint <br />temperature. <br />ii. Changeover shall change the operation mode of the indoor unit <br />that is set as the Changeover Master. The Changeover Master <br />indoor unit shall then change the operation mode of all indoor <br />unit groups daisy chained on the same D111-Net communication <br />bus to the same outdoor unit in the Heat Pump system or the <br />same branch selector box in the Heat Recovery system. <br />iii. Changeover to cooling mode shall occur when the room tem- <br />perature is great than or equal to the cooling setpoint <br />Reece, Noland & McElrath, Inc. 239500-78 Orange County Board of Elections <br />Orange Co., NC 05/04/18 <br />