Equipment Control

Configuring Equipment Control Page

Use the Equip Control page to configure the heating and cooling selections and loop tuning parameters.

Mode

Off-line or On-line.

Procedure

  1. Click the Equip Control button on the left pane to open the Equip Control 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 Scheduling page or Back to display the Setpoints page.

Fields

Name Definition
Heating Selections
  • Fan On with Heat

This field specifies the selection of fan operation

  • OFF with Heat

The equipment (i.e. plenum switch) controls the fan operation in heat mode. The thermostat controls the fan operation in cool mode.

  • ON with Heat

The thermostat controls the fan operation in both heat and cool modes.

  • Extended Fan Operation

Use this option to configure the time for extended fan operation after heating turns off. The choices are No Extend Op(0) or Extend 90 sec( 90 sec).

  • Heating Cycling Rate

Use this option to configure the heating cycling option for standard or fast response systems. Available choices are: Slow 3 cph (standard response), Med 6 cph (medium), Fast 9 cph (fast), and Fast!! 20 cph (super fast).

  • Enable Heating OAT Lockout

This option is enabled only if the outdoor air temperature input is configured in the General page. This enables the heating lockout based on the outdoor air temperature.

  • Heating OAT Lockout

This option is available only if the outdoor air temperature input is configured in the General page and Enable Heating OAT Lockout is selected. If outdoor air temperature is greater than Heat Lockout Setpoint then the heating is locked out.

  • Enable Heating DAT Hi Limit

This option is enabled only if the discharge air temperature input is configured in the General page. This will enable the usage of the discharge air high limit.

  • Heating DAT Hi Limit

This option is available only if the discharge air temperature input is configured in the General page and Enable Heating DAT Hi Limit is selected.

Cooling Selections
  • Extended Fan Operation

Use this option to configure the time for extended fan operation after cooling turns off. The choices are No Extend Op or Extend 40 sec.

  • Cooling Cycling Rate

This option allows the user to configure the cooling cycling option for standard or fast response systems. Available choices are: Std 3 cph (standard response), Fast 4 cph ( fast).

  • Enable Cooling OAT Lockout

This option is enabled only if the outdoor air temperature input is configured in the General page. This will enable the cooling lockout based on the outdoor air temperature.

  • Cooling OAT Lockout

This option is available only if the outdoor air temperature input is configured in the General page and Enable Cooling OAT Lockout is selected. If outdoor air temperature is less than the Cooling OAT Lockout setpoint then cooling is locked out.

  • Enable Cooling DAT Low Limit

This option is enabled only if the discharge air temperature input is configured in the General page. This enables the usage of discharge air low limit.

  • Cooling DAT Low Limit

This option is available only if the discharge air temperature input is configured in the General page and Enable Cooling DAT Low Limit is selected.
Loop Tuning This section allows the user to configure the loop tuning parameters.
  • Throttling Range

Use this screen to configure the heat and cool throttling ranges. The wizard automatically modifies the heat and cool throttling ranges when the number of stages configured is changed.

For a conventional RTU:

  • Cool Stages = configured cool stages
  • Heat Stages = configured heat stages

For a heat pump RTU:

  • Cool Stages = configured compressor stages (cool stages)
  • Heat Stages = configured compressor stages (cool stages) + Configured Aux heat stages

Throttling range remains always at 5 for T7350H1017 .

If you change the number of stages to zero, the throttling range remains unchanged.

The heat and cool throttling range values are selectable from 1-30 deg F(1-17 deg C).

When you enter some invalid values, the wizard automatically modifies it to nearest valid value.

  • Integral time

Use this to configure the heat and cool integral time values. The wizard automatically modifies the heat and cool throttling ranges when the number of stages configured is changed. Refer the following table for the default values of integral time values for different stages.

Integral time remains always at 1250 for T7350H1017.
If you change the number of stages to zero, the integral time remains unchanged.

A value of 0 means that the integral time is disabled.
Valid range is 100-5000 seconds. 0 also is a valid value. Values from 1 – 99 are invalid values. When user enters some invalid values, the wizard automatically modifies it to nearest valid value.

  • Derivative time

Use this to configure the heat and cool derivative time for PID loop tuning. The value is selectable from 10 to 3000 seconds. 0 also is a valid value. A value of 0 means derivative time is disabled. If you enter any invalid values, the wizard automatically modifies it to nearest valid value.

  • Anticipator Authority

Configure the anticipator authority value. You can enter a value between 2 – 15. The default value is 4.
Select the Apply to Heat only field if it is to be applied for heating only.

 

Heat/Cool Stages 1 2 3 4
Default Throttling Range 3 4 7 8
Default Integral Time 3100 2500 1650 1250

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