Converting the Zone Temperature and Zone Setpoint from networked to a hard-wired sensor - Metasys - LIT-12011829 - Field Device - VMA18 VAV Modular Assembly

N2 VMA Application Note

Brand
Metasys
Product name
VMA18 VAV Modular Assembly
Document type
Application Note
Document number
LIT-12011829
Revision date
2018-11-01
Language
English
If you are reusing a hard-wired sensor rather than replacing it with an NS Series Network Sensor, you may need to change the signal type so they match.
Note: If the existing installation uses an AP-TMZ160 digital display room sensor, it must be replaced with an NS Series Network Sensor or hard-wired sensor.

Make the following changes to inputs and outputs on the configuration to match the hard-wired sensor:

  1. Change the signal type of ZN-T (Zone Temperature) to Nickel 1k RTD.
  2. Change the signal type of ZNT-SP (Zone Setpoint) to Resistive (if present).
    Note:
    • ZN-T must be on AI-1 and ZNT-SP must be on AI-2.
    • The following properties may require modification to match the ranges of the sensor: Input Range Low, Input Range High, Output Range Low, and Output Range High.
  3. Change the signal type of WC-ADJ (Warmer Cooler Adjust) to Resistive (if present).
    Note: The following properties may require modification to match the ranges of the sensor: Input Range Low, Input Range High, Output Range Low, and Output Range High.
  4. Delete the Output OCC-MODE.
    Note: If OCC-MODE is not deleted, a Netsensor is added to the hardware, and the controller reports the sensor offline by rapidly flashing the fault LED.
  5. Change the signal type of TOCC-S (Temporary Occupancy) to Integrated temporary occupancy (if present).