VAV-DD7-E-S UL 864 SMOKE CONTROL RATED DUAL DUCT VAV CONTROLLER • Designed to provide pressure-independent control of dual-duct variable air volume (VAV) boxes in UL 864 Life Safety Smoke Control Systems. • Two integral air-flow sensors provide pressure independent operation of a dual-duct VAV box. UI: UNIVERSAL INPUTS HOB: HOT SWITCHED TRIAC

heating, ventilating, and air conditioning (HVAC) equipment to make up a smoke control system in accordance with NFPA 92A, Recommended Practice for Smoke-Control Systems, 2000 Edition. Additional construction and reliability concerns, not covered in NFPA 92A, are derived from similar requirements governing Fire

The Alerton® VisualLogic® VAV-DD7-E is a versatile, BACnet-compliant field controller that provides pressure-independent control of any dual-duct variable air volume (VAV) box. It is particularly suited for controlling dual-duct fan-powered …

型号：DD7-7-EC. 材质：金属. 电压：220V. 输入功率：250W. 转速：1440±30r/min. 风量：1602~2263m³/h. 产品特性：旋转方向：顺时针；安装位置：任意；绝缘等级：“F”；轴承：滚珠轴承（NMB）；防护等级：IP55；速度控制：0-10v/PWM信号；证书认证：CE；工作寿 …

2023年5月17日 · vav-dd7 hvac from alerton 2-year warranty - , field controller, 0.5 amp, 94 va, 24 v, 4 input, 7 output, 10 bit resolution, 0-1.25 inch water column, bacnet ms/tp lan

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Buy ALERTON Control Board Field Controller VAV-DD7-K2-A $88.88; type:Vav Control; mpn:Vav-dd7; brand:Alerton; Hvac Refrigeration: Controls Circuit Boards;

The Alerton® BACtalk® VAV-DD7 controller is a versatile BACnet-compliant terminal unit device that provides pressure-independent control of any dual-duct variable air volume (VAV) box. Three hot-switched outputs and four ground-switched triacs make the VAV-DD7 ideally suited for applications with auxiliary equipment.