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DocuSign Envelope ID: 9826C043- 4C32- 49CD- A4CC- DC28ABAB7CE7 <br />SECTION 239500 - MULTI - INDOOR VRV SYSTEM <br />REYQ216TAYD* <br />18 <br />37 <br />REYQ240TAYD* <br />20 <br />41 <br />REYQ264TAYD* <br />22 <br />45 <br />REYQ288TAYD* <br />24 <br />49 <br />REYQ312TAYD* <br />26 <br />54 <br />REYQ336TAYD* <br />28 <br />58 <br />REYQ360TAYD* <br />30 <br />62 <br />REYQ384TAYD* <br />32 <br />64 <br />REYQ408TAYD* <br />34 <br />64 <br />REYQ432TAYD* <br />36 <br />64 <br />REYQ456TAYD* <br />38 <br />64 <br />B. VRV IV FEATURES AND BENEFITS <br />1. Voltage Platform - Heat pump condensing units shall be available with a 460V /3ph /6OHz <br />power supply. <br />2. Advanced Zoning - A single system shall provide for up to 64 zones. <br />3. Independent Control - Each indoor unit shall use a dedicated electronic expansion valve <br />with 2000 positions for independent control. <br />4. VFD Inverter Control and Variable Refrigerant Temperature - Each condensing unit shall <br />use high efficiency, variable speed all "inverter" compressor(s) coupled with inverter fan <br />motors to optimize part load performance. The system capacity and refrigerant tempera- <br />tures shall be modulated automatically to set suction and condensing pressures while <br />varying the refrigerant volume for the needs of the cooling or heating loads. The control <br />will be automatic and customizable depending on load and weather conditions. <br />a. Indoor shall use PID to control superheat to deliver a comfortable room temperature <br />condition and optimize efficiency. <br />5. Configurator software - Each system shall be available with configurator software pack- <br />age to allow for remote configuration of operational settings and also for assessment of <br />operational data and error codes. <br />a. If this software is not provided by an alternate manufacturer, for each individual out- <br />door unit the contractor shall do the settings manually and keep detailed records for <br />future maintenance purposes. <br />6. Each system shall be capable of seamless integration with Daikin DVS series Dedicated <br />Outside Air System (DOAS). <br />7. Autocharging - Each system shall have a refrigerant auto - charging function. <br />8. Defrost Heating - Multiple condenser VRV systems shall maintain continuous heating <br />during defrost operation. Reverse cycle (cooling mode) defrost operation shall not be <br />permitted due to the potential reduction in space temperature. <br />Reece, Noland & McElrath, Inc. 239500-16 Orange County Board of Elections <br />Orange Co., NC 05/04/18 <br />