Pre-balancing mandatory settings - EasyIO - LIT-12014127 - EASYIO-FW-VAV - FV-VAV - 1.0

EasyIO FW-VAV Application Note

Brand
EasyIO
Product name
FV-VAV
Document type
Application Note
Document number
LIT-12014127
Version
1.0
Revision date
2024-04-09
Product status
Active
Language
English

About this task

Before you perform the balancing procedure, complete the following steps:

Procedure

  1. At the BAL_Mobile VAV page, use the VAV manufacturer's user manual or box label to set the VAV box factory to either the metric version, nominal air flow at 250 Pa, or the imperial version, CFM flow at 1 in. WC. If the manufacturer's K-factor is not available, you can use the indicative K-factor in Appendix A or calculate it with one of the following formula.
    • If you know the flow at 1 Pa you can calculate the flow at 250 Pa.

      √250 * flow at 1 Pa = flow at 250 Pa

    • If you do not know the flow at 1 PA you can calculate the flow at 250Pa or 1 WC, however, you need an external flow and pressure meter.

      Measured flow / √ pressure = flow at 1 Pa

      √250 * flow at 1 Pa = flow at 250 Pa

  2. Set the project design Max Flow setpoint (Config_MaxFlowSp) (AV24).
  3. Set the project design Max ReHeat Flow setpoint. If applicable, set it to the Min Flow setpoint if no ReHeat required. (Config_MaxHeatFlowSp) (AV25).
  4. Set the project design Min Flow setpoint (Config_MinFlowSp) (AV26).
  5. Ensure that the Balancing Measure Max Flow (Config_BalCfmMaxFlow) (AV53) and the Balancing Measure Min Flow (Config_BalCfmMinFlow) (AV54) are zero.