SC-VAV-N Specification Sheet For electronically commutated motors Used in constant pressure applications The SC-EFC is designed to control exhaust air in various building applications. The system includes a controller with integral pressure transducer, pressure tap, 24VAC stepdown transformer, along with 3 enclosure options. The SC-EFC can be used with any ECM motor to control the fan speed, and is capable of maintaining pressure at up to +/- 1 w.c. of pressure. The SC-EFC is available with either BACnet or LonWorks compatibility and can be integrated into virtually any building automation system.
Increased Energy Efficiency Improves energy efficiency when combined with: Motion detectors to automatically adjust a zone s occupancy mode from standby to occupied when presence is detected CO2 sensors as part of a demand-controlled ventilation strategy that adjusts the amount of fresh air intake according to the number of building occupants Light switches to control both lighting and a room s HVAC occupancy / standby mode setting Product Specifications Power Supply Input Model SC-VAV-N Points Universal hardware inputs Built-in Pressure Sensor 11-Point VAV 4 Wireless inputs 1 18 15 Vdc Power Supply Digital (Triac) 4 outputs Universal outputs 2 1. Controller is Open-to-Wireless ready. Available when an optional Wireless Receiver is connected to the controller. Some wireless sensors may use more than on e wireless input from the controller. Voltage 24VAC/DC; ±15%; Class 2 Frequency 50/60Hz Overcurrent Protection Field replaceable fuse Fuse Type 2.0A 3.0A (for triacs when using the internal power supply) Power Consumption 10 VA typical plus all external loads 1, 85 VA max. (including powered triac outputs) 1. External loads must include the power consumption of any connected modules such as an Allure Series Communicating Sensor. Refer to the respective module s datasheet for related power consumption information. Communications Communication Bus BACnet MS/TP BACnet Profile B-ASC 1 EOL Resistor Built-in, jumper selectable Baud Rates 9600, 19 200, 38 400, or 76 800 bps Addressing Dip switch or Configurable with the Allure Series Communicating Sensors 1. Refer to Distech Controls Protocol Implementation Conformity Statement for BACnet. Hardware Processor CPU Speed Memory Real Time Clock (RTC) STM32 (ARM Cortex M3) MCU, 32 bit 68 MHz 384 kb Non-volatile Flash (applications) 1 MB Non-volatile Flash (storage) 64 kb RAM Built-in Real Time Clock without battery Network time synchronization is required at each power-up cycle before the RTC become available
Status Indicator Subnetwork Communication Cable Connector Green LEDs: power status & LAN Tx Orange LEDs: controller status & LAN Rx RS-485 Cat 5e, 8 conductor twisted pair RJ-45 7.1" [180] 6.25" [159] Controller with Optional Terminal block Cover 7.7" [195] 2.7" [68] 5.7" [145] 5.2" [133] 0.5" [13] 2.6" [66] 0.5" [13] Inches Millimeters Environmental Operating Temperature 32 F to 122 F; 0 C to 50 C Storage Temperature -4 F to 122 F; -20 C to 50 C Relative Humidity 0 to 90% Non-condensing Standards and Regulations CE: Emission EN61000-6-3: 2007; A1:2011; Generic standards for residential, commercial and light-industrial environments Immunity EN61000-6-1: 2007; Generic standards for residential, commercial and light-industrial environments FCC This device complies with FCC rules part 15, subpart B, class B UL Listed (CDN & US) UL916 Energy management equipment UL 864 UL 864, 9 th Edition, UUKL Listed Smoke Control Equipment (ECB-VAV UUKL model only) 1 California State Fire Marshal Listing CSFM: 7300-2187:0100 (ECB-VAV UUKL model only) 1 CEC Appliance Database Appliance Efficiency Program 2 1. For detailed specifications regarding the ECB-VAV UUKL model, refer to the Distech Controls UUKL Smoke Control Design Guide. 2. California Energy Commission s Appliance Efficiency Program: The manufacturer has certified this product to the California Energy Commission in accordance with California law.
Specifications - On-Board Air Flow Sensor 0-2.0 in. W.C. (0-500 Pa) Input Resolution 0.00007 in. W.C. (0.0167 Pa) Air Flow Accuracy ±4.0% @ > 0.05 in. W.C. (12.5 Pa) ±1.5% once calibrated through air flow balancing @ > 0.05 in. W.C. (12.5 Pa) Specifications - Universal Inputs (UI) General Input Type Input Resolution Power Supply Output Contact Type Counter Type Maximum Frequency Minimum Duty Cycle 0 to 10VDC 0 to 5VDC 0 to 20mA Universal; software configurable 16-bit analog / digital converter 15VDC; maximum 80mA Dry contact Dry contact 1Hz maximum, 500milliseconds On / 500milliseconds Off 0 to 10VDC (40kΩ input impedance) 0 to 5VDC (high input impedance) 0 to 20mA 249Ω external resistor wired in parallel
Specifications - Universal Outputs (UO) General Output Type Output Resolution Output Protection Universal; software configurable 10-bit digital to analog Converter Built-in snubbing diode to protect against back-emf, for example when used with a 12VDC relay Output is internally protected against short circuits Load Resistance Minimum 600 Ω for 0-10VDC and 0-12VDC outputs Auto-reset fuse 0 or 12VDC (On/Off) Maximum 500 Ω for 0-20mA output Provides 24VAC over voltage protection 0 or 12VDC Source Current Maximum 20 ma at 12VDC (minimum load resistance 600 Ω) 1 1. Relays equipped with coil that consume between 20 and 35mA can be used with up to 2 Universal Outputs when the 15V Power Supply Output is de-rated to supply 50mA maximum current. PWM Thermal Actuator Management Adjustable period from 2 to 65seconds Adjustable warm up and cool down time Floating Minimum Pulse On/Off Time Drive Time Period 500milliseconds Adjustable 0 to 10VDC Voltage 0 to 10VDC linear Source Current Maximum 20 ma at 10VDC (minimum load resistance 600 Ω)
Specifications - Digital Output (DO) General Output Type Maximum Current per Output Power Source 0 or 24VAC (On/Off) PWM Floating Minimum Pulse On/Off Time Drive Time Period Power Source 24VAC Triac; software configurable 0.5A continuous 1A @ 15% duty cycle for a 10-minute period External or internal power supply (jumper selectable) 0 or 24VAC Adjustable period from 2 to 65seconds 500milliseconds Adjustable External or internal power supply (jumper selectable)
Specifications - SC-TR40-B Transformer The SC-TR40-B is a 40 VA, 240/208/120 to 24 VAC transformer used in low voltage applications. The transformer is factory mounted to a 4 x 4 junction box for primary wiring. Org - 240 VAC Yel/Wht - 24 VAC Red - 208 VAC Wht - 120 VAC
Specifications - SC- Material: 6061T-6 Aluminum Alloy Port Connections: ¼" Brass Hose Barb Gasket Material: Neoprene Maximum Pressure: 10 PSIG Maximum Temperature: 250 C Maximum Air Flow: Unlimited Weight: 1.5 oz. (.68 kg) 2X 0.185 Dia Neoprene Gasket (2) 3/32 Orifice (2.38 mm) 0.500 (12.7mm) 0.500 (12.7mm) 1.500 (38.1mm) 3/8 Dia. Cap (9.525 mm) 0.250 (6.35mm) L 1/4 Hose Barb (6.35mm) CAUTION: Do not use in explosive/hazardous environment or with flammable/combustible media.
SC-VAV-N Enclosure Options: NEMA 1 12 x 12 x 6 with backplate NEMA 3R (raintight) 12 x 12 x 6 with backplate No enclosure (transformer sold separately with no enclosure is selected) SC-08-1243-051717