VAV Configuration

Configuring Excel 10 VAV II Configuration

Use the VAV Configuration page to configure the VAV.

Purpose

Define VAV configuration attributes for the VAV II controller.

Mode

Configuration can be performed with the device On-line or Off-line.

Procedure

  1. Click the Configuration button on the left pane to open the Outputs 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 Inputs page.

Fields

Name Definition
Model Type Defines the XL10 controller hardware that will be used for this application. The controller type selection is validated during the download process to prevent a mismatch of hardware configuration.

Valid selections for this field are:

  • W7751HSmart
  • W7751B_D_FStandard

Note: W7751HSmart supports 4 output pins while the other model supports 8 output pins.
Pressure Type Defines the VAV Terminal Unit pressure control operation for this Application. This selection defines how the controller will operate the VAV Terminal Unit's damper.

Valid Selections for this field are:

  • Pressure Dependent - The controller uses space temperature as the primary means of controlling the VAV Terminal.
  • Pressure Independent - The controller uses airflow as the primary means of controlling the VAV Terminal Damper.
Box Type Defines the physical type of VAV Terminal the controller is connected to. This select determines what control options are available for the VAV Terminal.

Valid selections for this field are:

  • Single Duct – This VAV Terminal type consist of a single primary air supply inlet connection with or without a primary flow sensor. This box type is primarily used for cooling only applications, cooling with local reheat or dual temperature (central heating/cooling) systems.
  • Dual Duct – This VAV Terminal type consist of separate primary air supply inlets for cooling and heating. Typically, the box can be configured with a single flow sensor located on the discharge side of the terminal or in one of the two primary air inlets, a flow sensor in each of the primary air inlets, or no flow sensors.
  • Flow Tracking – This VAV Terminal type consist of a single inlet air connection receiving it's primary source from the condition space. The outlet of the terminal is connected to a return air (or exhaust air) system.
Wall Module Type Defines the type of wall module to be used for this application. This selection determines the type of control and options that are available from the wall module.

Valid selections for this field are:

  • No Sensor – There is no physical wall module connections to this controller.
  • Sensor – The physical wall module connected to this controller contains a sensor only.
  • Sensor Override – The physical wall module connected to this controller contains a sensor and push button override with LED indication.
  • Sensor Setpoint – The physical wall module connected to this controller contains a sensor and remote setpoint pot
  • Sensor Setpoint Override – The physical wall module connected to this controller contains a sensor, remote setpoint pot, push button override and LED indication.
  • LCD Wall Module – The physical wall module connected to this controller contains a sensor, remote setpoint pot., push button override and a LCD display.

Note: The LCD Wall Module is supported by VAV devices of type Smart Actuator only whose version is v1.02.14 and above.
Morning Warmup Type Defines the control method the controller uses when the controller status is set to morning warmup.

Valid selections for this field are:

  • Fixed Flow – The controller maintains a fixed air flow setpoint or damper position during the warmup period.
  • Modulating Flow with Reheat – The air flow setpoint is reset by the local space temperature during the warmup period. If controller is at maximum flow and additional warmup is required local reheat is used.
  • Modulating Flow without Reheat – The air flow setpoint is reset by local space temperature during the warmup period. No local reheat is used during the warmup period.
  • CZS Terminal Load
Modulate Reheat Flow The check box enables Proportional reheat flow. When checked, the temperature control loop modulates the damper (pressure-dependent mode) or reset air flow setpoint (pressure-independent mode) when the controller is in the reheat mode from Minimum Flow Setpoint to the Reheat Flow Setpoint. If the check box is not checked, then when the controller is in the reheat mode, there is a step change from Minimum Flow Setpoint to the Reheat Flow Setpoint.
Motor Speed Section
Damper Motor Speed Defines the time it takes the damper motor actuator to travel from the full close to full open position or visa versa. This time should reflect the damper travel time and not the motor actuator speed. Example, if the actuator motor speed is 90 seconds but the travel time of the damper from full close to full open is 45 seconds then the Dmpr Mtr Spd should be set to 45 seconds.
Reheat Motor Speed Defines the time it takes the reheat actuator to travel from the full close to the full open position or visa versa. This time should reflect the reheat valve travel time and not the motor actuator speed. Example, if the reheat actuator motor speed is 125 seconds but the travel time of the valve from full close to full open is 90 seconds then the Reheat Mtr Spd should be set to 90 seconds.
Output Settings Section
Flow Type Defines the control flow algorithm used by the controller. The selection available dependents of the Pressure Type and Box Type selected.

Valid selections for this field are:

  • Flow Normal
  • Shared Wall Module
  • Flow Normal – This flow type is selectable when the Pressure Type is set to pressure independent and the Box Type is set to Single Duct or Dual Duct.
  • Shared Wall Module – This flow type is selectable when the Pressure Type is set to pressure independent or pressure dependent and the Box Type is set to Single Duct.
  • DD Satel No Flow Mix – This flow type is selectable when the Pressure Type is set to Pressure Independent and the Box Type is set to Dual Duct.
  • DD Satel Flow Mix – This flow type is selectable when the Pressure Type is set to Pressure Independent and the Box Type is set to Dual Duct.
  • DD Satel Constant Volume – This flow type is selectable when the Pressure Type is set to Pressure Independent and the Box Type is set to Dual Duct.
  • DD Master No Flow Mix – This flow type is selectable when the Pressure Type is set to Pressure Independent and the Box Type is set to Dual Duct.
  • DD Master Flow Mix – This flow type is selectable when the Pressure Type is set to Pressure Independent and the Box Type is set to Dual Duct.
  • DD Master Constant Volume – This flow type is selectable when the Pressure Type is set to Pressure Independent and the Box Type is set to Dual Duct.
  • Dual Duct Discharge Sensor – This flow type is selectable when the Pressure Type is set to Pressure Independent and the Box Type is set to Dual Duct.
  • Dual Duct Discharge Sensor Constant Volume – This flow type is selectable when the Pressure Type is set to Pressure Independent and the Box Type is set to Dual Duct.
  • Flow Tracking – This flow type is automatically selected when the Pressure Type is set to Pressure Independent and the Box Type is set to Flow Tracking
Reheat Type Defines the type of reheat used by the controller. There are two basic types of reheat available for the VAV Terminal, VAV Terminal Reheat and Peripheral Reheat.

Valid selections for this field are:

  • No Reheat – There is no local reheat associated with the VAV Terminal.
  • One Stage Reheat – There is one stage of electric reheat associated with the VAV Terminal. One triac output is required for this option.
  • Two Stage Reheat – There are two stage of electric reheat associated with the VAV Terminal. Two triac outputs are required for this option.
  • Three Stage Reheat –
  • Three Stage Bin Reheat – There are three stages of electric reheat associated with the VAV Terminal. The three stages are obtained by first turning on the first electric reheat for stage one, shutting down the first stage and starting the second stage and finally turning both stages of electric reheat on for the third stage. Two triac outputs are required for this option.
  • One Stage Periph – There is one stage of electric peripheral reheat associated with the VAV Terminal. One triac output is required for this option.
  • Float Reheat – There is a modulating valve for the VAV Terminal reheat. This output uses the series 60 type floating control. Two triac outputs are required for this option.
  • Float Periph Reheat – There is a modulating valve for the space peripheral reheat. This option uses the series 60 type floating control for the output to the valve. Two triac outputs are required for this option.
  • Float Reheat Then Periph – There is a modulating valve for the VAV Terminal reheat and a modulating valve for the space peripheral reheat. This option uses the series 60 type floating control for both valve outputs. The VAV Terminal reheat valve is modulated as the first stage of reheat and the peripheral reheat valve is modulated open as the second stage. Four triac outputs are required for this option.
  • Float Periph Then Reheat – There is a modulating valve for the VAV Terminal reheat and a modulating valve for the space peripheral reheat. This option uses the series 60 type floating control for both valve outputs. The peripheral valve is modulated as the first stage of reheat and the VAV Terminal reheat valve is modulated open as the second stage. Four triac outputs are required for this option.
  • PWM Reheat – There is a modulating valve for the VAV Terminal reheat. This option uses Pulse Width Modulation control for the output to the valve. One triac output is required for this option.
  • PWM Periph – There is a modulating valve for the space peripheral reheat. This option uses Pulse Width Modulation control for the output to the valve. One triac output is required for this option.
  • PWM Reheat Then Periph – There is a modulating valve for the VAV Terminal reheat and a modulating valve for the space peripheral reheat. This option uses Pulse Width Modulation control for both valve outputs. The VAV Terminal reheat valve is modulated as the first stage of reheat and the peripheral reheat valve is modulated open as the second stage. Two triac outputs are required for this option.
  • PWM Periph Then Reheat – There is a modulating valve for the VAV Terminal reheat and a modulating valve for the space peripheral reheat. This option uses Pulse Width Modulation control for both valve outputs. The peripheral valve is modulated as the first stage of reheat and the VAV Terminal reheat valve is modulated open as the second stage. Two triac outputs are required for this option.
  • Three Stage Reheat – There are three stages of electric reheat associated with the VAV Terminal. Three triac outputs are required for this option.
Fan Type Defines the type of fan associated with the VAV Terminal. The selection of the fan type defines the control algorithm that the controller will apply to the VAV Terminal.

Valid selections for this field are:

  • No Fan – There is no fan associated with this VAV Terminal.
  • Series Fan – The fan supplied with this VAV Terminal is a series style configuration.
  • Parallel Fan Temp – The fan supplied with this VAV Terminal is a parallel style configuration that will use temperature control for the fan operation.
  • VavParallelFlowControl – The fan supplied with this VAV Terminal is a parallel style configuration that will use flow control for the fan operation.
  • PWM Fan – The fan supplied with this VAV Terminal is a parallel style configuration that will use temperature control for the fan operation with a PWM signal to operate the fan.
Optional Outputs Defines the type and operation of outputs that are not directly associated with the control algorithms in the VAV2 controller. There are two basic types of outputs that can be defined and only one instance of each type is allowed.

Aux Option - This defines an output type that is energized whenever the controller is in the occupied mode and is de-energized for all other modes.

Valid selections for this field are:

  • Unassigned – This option output is not assigned to the controller.
  • Auxiliary_Maintain – This selection assigns one triac output for the auxiliary point.
  • Auxiliary_Pulse – This selection assigns two triac outputs for the auxiliary point. The controller momentarily pulses one output for the on command and the second output for the off command.

Free Option - This defines an output type that is energized through the network variable DestFree. With this assignment an output point within the VAV controller can be commanded from another e-bus device.

Valid selections for this field are:

  • Unassigned – This option output is not assigned to the controller.
  • Free_Net_Maintain – This selection assigns one triac output for the Free point.
  • Free_Net_Pulse – This selection assigns two triac outputs for the Free point. The controller momentarily pulses one output for the on command and the second output for the off command.
PWM Settings Section
PWM Period Defines the time period of the PWM signal. This is usually the sum of the Zero time value and the Full Time value. The minimum resolution of the time value is 0.1 seconds.
PWM Zero Defines the time period for the Zero position pulse. When the on time of the PWM period is at this value the PWM device will position itself to the zero position.
PWM Full Defines the time period for the Full position pulse. When the on time of the PWM period is at this value the PwM device will position itself to the full position. The minimum resolution of the time value is 0.1 seconds

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