CVAHU Miscellaneous

Description

Other CVAHU application settings.

Purpose

Define additional CVAHU Controller parameters, such as DLC setpoint bump.

Mode

Off-line or On-line.

Procedure

  1. Click the Miscellaneous button on the left pane to open the Miscellaneous Configuration page.
  2. Enter information into available fields.
  3. Click Commit to save the settings or Reset to revert to the last saved settings.
  4. Click Next to display the PID Configuration page or Back to display the Zone Options Configuration page.

Fields           

Name Definition
IAQ CO2 Setpoint Setting above which the Indoor Air Quality (IAQ) is deemed to be poor, and the controller enters the IAQ override mode. Values range from 0 – 2000 PPM (Enabled when SpaceCo2 sensor is selected).
DLC Setpoint Bump Upon receipt of a DLC_Shed signal over the LonWorks network, the current operating setpoint value is bumped up/down (for cool/heat modes) by this amount. Values range from 0 – 10 DDF (0 - 5.56 DDK).
Use Wall Module Select one of the following options:
  • Yes
  • No

If set to yes, the wall module setpoints are used by the controller and those set in the configuration are ignored.

If set to no, the setpoint values set in the configuration are used.
Override Type Specify the type of Bypass override functions that are available from the Wall Module’s Override push button. Select one of the following options
  • None (no Bypass configured for wall module)
  • Normal
  • Bypass (no Continuous Unoccupied allowed from the push button)
Override Priority Set the priority scheme for the Bypass override function. Options are:
  • LastWins - Last received input takes precedence. It can be either the Bypass button or the Network signal.
  • NetManOccWins - The Network signal always takes precedence over the Bypass button.

This field is available only if Override Type is Normal or Bypass Only.
Bypass Time Set the time period for a bypass override event. Values range from 0 through 1080 minutes. Enabled if Override Type is Normal or Bypass Only
Max. DaTemp Setpoint Values range from 65 Deg.F – 135 Deg.F (18.33 Deg.C – 57.22 Deg.C). Enabled if a discharge air temperature sensor is selected.
Min. DaTemp Setpoint Values range from 0 Deg.F – 60 Deg.F (-17.78 Deg.C – 15.56 Deg.C). Enabled if a discharge air temperature sensor is selected.
Setpoint Knob Type
  • Relative - (plus or minus up to 9 Deg.DDF (5 Deg.DDK ) from the current actual setpoint set on the Zone Options tab).
  • Absolute Middle - (the knob of the Wall Module sets the midpoint between the heat and cool current actual setpoints)

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