CVAHU Outputs

Description

CVAHU applications can have a variable number of heating and cooling stages. The outputs could be of staged, PWM, floating, or Analog type. In addition there is a Change over relay (Heat Pump Application)and Economizer Output. The Economizer output can be Floating, PWM, Analog, or Packaged Economizer 1. Optional points can also be selected from this selection.

Note

Packaged Economizer is selected by using "EconNonePackaged" and selecting the "AuxEcon" optional Output. This output will enable the economizer when the CVAHU is in the Occupied mode.

Purpose

Enter all outputs, including optional outputs, to be controlled by the CVAHU Controller.

Mode

Off-line or On-line

Procedure

Click the Outputs button on the left pane to open the Output Configuration page.
Enter information into available fields.
Select the appropriate controller type from the Controller Type list.
Select the power frequency from the Power Frequency list.
Select the appropriate equipment type from the Equipment Type list.
Choose the number of stages (1-4) or the type (PWM or Floating) of heating from the Heating list.
Choose the number of stages (1-4) or the type (PWM or Floating) of cooling from the Cooling list.
Select the type of economizer from the Economizer list.

If the heating, cooling, or economizer is configured as PWM, the Period, Zero Scale, and Full Scale settings must be configured.

If the heating, the cooling, or the economizer is configured as Floating, the Motor speed settings must be configured.

Configure the Optional points.
Click Commit to save the settings or Reset to revert to the last saved settings.
Click Next to display the Input Configuration page.

Fields

	W7750A	W7750B	W7750C	W7750B Enhanced
Heating	1 to 4 stages	1 to 4 stages, HeatPWM or HeatingFloating	1 to 4 stages, HeatPWM, HeatPWMRev, HeatAO, HeatAORev, or HeatingFloating	1 to 4 stages, HeatPWM, HeatPWMRev or HeatingFloating
Cooling	1 to 4 stages	1 to 4 stages, CoolPWM or CoolingFloating	1 to 4 stages, CoolPWM, CoolPWMRev, CoolAO, CoolAORev, or CoolingFloating	1 to 4 stages, CoolPWM, CoolPWMRev or CoolingFloating
Economizer	EconNone or EconFloating	EconNone, EconPWM, or EconFloating	EconNone, EconPWM, EconPWMRev, EconAO, EconAORev, EconPackaged or EconFloating	EconNone, EconPWM, EconPWMRev, EconPackaged or EconFloating
Optional Points	OccStatus, AuxEcon, Free1, Free2, Free1PulseOn, Free1PulseOff. Maximum of one optional point.	OccStatus, AuxEcon, Free1, Free2, Free1PulseOn, Free1PulseOff Maximum of three optional points.	OccStatus, AuxEcon, Free1, Free1Rev, Free2, Free2Rev Free1PulseOn, Free1PulseOff, Free1AO, Free1AORev, Free2AO, Free2AORev, Free1Dehumidify	OccStatus, AuxEcon, Free1, Free1Rev, Free2, Free2Rev Free1PulseOn, Free1PulseOff, Free1Dehumidify.

Note:

The optional points Free1AO, Free2AO, Free1AORev, Free2AORev are available in W7750C Model of CVAHU only. These enumerations must be selected to use terminals 6,7 and 8 of W7750C model. These outputs can be driven by XL15C, but since Free1 and Free2 are digital in nature, XL15C can only command these points to ON or OFF. Hence, these points can be driven only by digital outputs of Xl15C loops.

Name	Definition
Controller Type	Select one of the following model types: W7750A W7750B W7750C W7750B Enhanced The wizard does not allow commissioning if incorrect Model Type is selected.
Power Frequency	Select one of the following options: 50 Hz 60 Hz
Equipment Type	Select one of the following options: Conventional HeatPump
Heating	Refer to table above for selecting Heating options. If you select Floating, enter the Motor Speed settings. If you select PWM, enter the PWM settings.
Cooling	Refer to the table above for selecting Cooling settings: If you select Floating, enter the Motor Speed settings. If you select PWM, enter the PWM settings.
Economizer	Refer to the table above for selecting Economizer options: If you select Floating, enter the Motor Speed settings. If you select PWM, enter the PWM settings.
Motor Speed	You can configure three Motor Speed settings: Heating Cooling Economizer If you select HeatingFloating for configuring Heating settings, Motor speed for heating is enabled. Similarly, if you select CoolingFloating or Econfloating for cooling and economizer respectively, Motor Speed for Cooling and Economizer is enabled.
PWM settings	PWM settings are enabled if heating, cooling, or Economizer is configured as PWM.. It consists of Zero Scale, Full Scale, and Period values to control PWM output type.

List of the Optional Points available for the XL10 CVAHU

Note:

When selecting one of the following, the wizard assigns a digital output I/O terminal to the function.

Name	Definition
Occupancy_Status	Energized if the controller is currently in Occupied mode.
Free1	Network controller digital output. Follows the input signal nviFree1. Turns on when nviFree1 is on.
Free2	Network controller digital output. Follows the input signal nviFree2. Turns on when nviFree2 is on
Free1_Pulse_On	Momentary digital output (1 Sec.). Typically used for controlling lighting systems. This output turns the lights on. Uses nviFree1
Free1_Pulse_Off	Momentary digital output (1 Sec.). Typically used for controlling lighting systems. This output turns the lights off. Uses nviFree1.
Unused_Out	No digital output assigned.
Aux_Econ	Tracks occupancy (On for OCC, OFF for UNOCC). Emulates the T7300's internal economizer output signal for controlling external economizer packages.

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