Siemens VFM-1 Cerberus Pyrotronics 500-893967 Fan Control Module, Made in USA

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The MXLV LED Annunciator Module/MXLV Fan Control Module, the VFM-1 is an MXLV command console option module, which provides manual control of building HVAC system fans, motors, and dampers. Each VFM-1 module provides four rotary 3-positionswitches for manual system control. These HOA (Hand, Off, Auto) switches provide a visual indication of the switch state, (Off, On, or Automatic position)and its associated control outputs by both visual switch position indication and LED status indication. Each switch has three associated LEDs to indicate Fan/Damper/Motor status: OFF (Red LED), ON (Green LED), TROUBLE (Yellow LED). Outputs will only change state when manually controlled via the On/Off switch or based on system logic when switch is in the Auto position. The VFM-1s are mounted on a hinged panel as a part of the MXLV command console enclosure. A four conductor cable is supplied for interconnection of the modules. A 12” cable (MRRC-1) is available for connection between rows. Each VFM-1 switch is fully programmable. Many outputs circuits or relays may be grouped and controlled by a single switch. When more than one fan is controlled by a single VFM-1 switch, an optional programmable stagger time can be set to prevent all fans from turning on simultaneously, (0 - 255 seconds). Switch programming and zone usage groupings reassigned using the system custom programming software. Any combination of the VSM, VLM or VFM modules may be used. A maximum of 31 modules may be used per Audio Control Module, ACM-1. UL and ULC Listed, and NYMEA and CSFM Approved.

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