Vesda VSP-820


ASD Purge Unit – Single Channel

Availability: Estimated 14 days

Condition: New
Brand: Vesda
Status: Active
SKU: 45914
Manufacturer Part #: VSP-820


ASD systems continuously monitor the air in the protected environment, potentially subjecting the system to contamination over time. In order to prevent the build- up of dust and dirt on sampling holes and pipe network, regular pipe network purging with compressed air is essential.

In contrast to conventional purging systems, the VSP-820 unit features a single built- in Solenoid valve, which initiates the release of air into the pipe network. This valve also increases the reliability of the system by protecting the unit from any compressed air damage and can be accessed through a control board integrated into the housing.

Installation cost is greatly reduced, thanks to the unit’s compact design, which removes the need for additional mechanical and electrical control devices. Further cost savings are realized due to reduced cabling and commissioning requirements.

User-definable purging processes and customizable program features allow the VSP-820 to deliver continuous and uninterrupted airflow whilst optimizing benchmark preventative maintenance regimes, through automatic purging processes settable at specific times.

Designed with the engineer in mind, the unit offers additional flexibility through the use of an external push- button or central timer as an input to allow the initiation of additional manual or automatic activations of the purging process.

Additional information

Weight 7.05 lbs

Honeywell International




Unit of Measurement

EA (Each)


Production Status



  • A user-friendly and compact system, designed for larger pipe networks
  • Compatible with VESDA, ICAM and FAAST Aspiration Smoke Detection (ASD) systems
  • Patented design without air resistance (as defined by EN 54-20)
  • 6 user selectable preventative or event- triggered purging programs – short or long purging cycle options
  • Internal clock or external clock timer can be connected
  • Several systems can be networked in Master-Slave mode
  • Manual control via an external push-button
  • Automatic initiation if a fault message is received from the ASD system (activating through FACP only)
  • Easy commissioning without software tools
  • Multicolored LED indicates system condition


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VESDA Automatic Purging Unit


Vesda – Data Sheet

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