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DocuSign Envelope ID: 9826C043- 4C32- 49CD- A4CC- DC28ABAB7CE7 <br />SECTION 239500 — MULTI - INDOOR VRV SYSTEM <br />through the ems. The interface is to be connected to ems for this project. All points shall <br />be integrated to ems to provide full monitoring, setpoint adjustment (temp., etc.), oper- <br />ating schedule adjustment (on /off), etc. Fully functionality shall be possible via ems or <br />via local control. Provide all ems interface modules, parts, etc. as required for a com- <br />plete installation. Interface shall be Bacnet compatible. <br />5.02 ELECTRICAL CHARACTERISTICS <br />B. General: From each circuit board to the controls, the electrical voltage shall be 16 <br />volts DC. <br />C. Wiring: Control wiring shall be installed in a daisy chain configuration from indoor unit <br />to indoor unit then to the branch selector box and outdoor unit. Control wiring shall <br />run from the indoor unit terminal block to the specific controller for that unit. <br />D. Wiring Size: The wire shall be a non - shielded, 2 -core sheathed vinyl cord or cable, <br />size AWG18 -2. <br />5.03 CONTROLLER CHARACTERISTICS <br />A. Individual Zone Controller- Wired Remote Controller (BRC1 E71) <br />1. The wired remote controller shall be able to control 1 group (maximum of 16 fan <br />coil units) and shall be able to function as follows: <br />i. The controller shall have a maximum wiring length of 1,640 feet. <br />ii. The controller shall have a self diagnosis function that constantly moni- <br />tors the system for malfunctions (total of 80 components). <br />iii. The controller shall be able to immediately display fault location and <br />condition. <br />iv. An LCD digital display will allow the temperature to be set in VF incre- <br />ments. <br />v. The controller shall be equipped with a thermostat sensor in the remote <br />controller making possible more comfortable room temperature control. <br />vi. Auto - Changeover for Heat Pump and Heat Recovery at cooling setpoint <br />+1 F and heating setpoint -1 F. <br />vii. Independent cooling and heating setpoints in the occupied and unoccu- <br />pied modes. <br />viii. Backlight / Large native room temperature display. <br />ix. Setpoint range limit with 1 deg. F setpoint increments. <br />x. Operation buttons can be individually prohibited. <br />xi. 48 Hour backup in case of power loss. <br />OPERATION <br />Start/Stop <br />Operation Mode <br />Temperature Setting <br />60 °F - 90 °F Set Point Range <br />Fan Speed <br />MONITORING <br />Status <br />Malfunction Flashing <br />Malfunction Content <br />Operation Mode <br />Temperature Setting <br />Permit/Prohibit Selection <br />Fan Speed <br />CONTROL <br />MANAGEMENT <br />Field Setting Mode <br />Group Setting <br />Auto Re -Start <br />B. Individual Zone Controller- Simplified Wired Remote Controller (BRC2A71) <br />Reece, Noland & McElrath, Inc. 239500-67 Orange County Board of Elections <br />Orange Co., NC 05/04/18 <br />