A4021A1010| Honeywell |
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A4021A1010| Honeywell |

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Category : Gas Detector
USD 738

     

    • Manufacturer: Honeywell

      Product Type: Valve Proving System (VPS)

      Model: A4021A

      Description:
      The Honeywell A4021A is a self-checking, microprocessor-based Valve Proving System (VPS) designed to verify the effective closure of automatic shut-off valves by measuring the pressure differential between two valves during the test sequence. It ensures system safety by performing pre-configuration (before burner startup) and post-configuration (after heat demand) checks.

       

  • Manufacturer: Honeywell

  • Controll.Tenuta A4021A 110v blue

  • Honeywell Valve proving system A4021

  • The A4021 is a self-checking microprocessor based Valve Proving System (VPS).

  • The A4021 checks the effective closure of automatic shut-off valves by measuring the pressure. differential between two valves during the test sequence.

  • The A4021 is specially designed to be used as proving system to check the effective closure of the valves before burner start up (pre-configuration) or at the end of a heat demand (post-configuration).

  • Approvals: CE approved (50Hz) according EN1643 (PIN: CE-0063AS1822)

  • Protection class: IP40, only with subbase ZL030001

  • Ambient temperature: -10...60C

  • Maximum humidity: 95%rh

  • Remote reset.

  • Alarm output potential free NO contact.

  • Uses the NO contact of a standard gas pressure switch, that is set to 1/2x the nominal inlet pressure.

  • Suggested gas pressure switches: C6097 series C60VR40xxx series

  • Outputs: 1xSPST

  • Operation: Automatic

  • Runtime: 60s

  • Comment: Test time per valve 25sec.

  • Shipping Weight: 2 Kg

Approvals: CE approved (50Hz) according to EN1643 (PIN: CE-0063AS1822) Protection Class: IP40 (only with subbase ZL030001) Application: Used to prove valve tightness before burner start-up or after heat demand Ambient Temperature: -10°C to +60°C Maximum Humidity: 95% RH Power Supply: 110V AC Operation: Automatic Runtime: 60 seconds total (approx. 25 seconds per valve test) Outputs: 1 × SPST Alarm Output: Potential-free NO contact Remote Reset: Supported Recommended Gas Pressure Switches: C6097 series, C60VR40xxx series (use NO contact set to ½ × nominal inlet pressure)