Balancing a single duct system - Metasys - LIT-12011087 - NS-ATV7001-0 - NS-ATV7002-0 - NS-ATV7003-0 - NS-BTV7001-0 - NS-BTV7002-0 - Accessory - Handheld VAV Balancing Sensor/Tool

To balance a single duct system:

Use Table 1 to navigate through the VAV Balancing Device menus.
To exit, press Enter when [EXIT] appears on the highest submenu.

Note: Exit the balancing mode before removing power from the handheld balancing tool; this returns the VAV controller to normal operation. If you do not exit balancing mode, a delay may occur (while the inactivity timer expires) before the VAV controller returns to normal operation, or if you try to reenter the balancing mode.

Note: Shaded portions of table indicate items that display only in certain applications. Un-shaded portions list items common to all applications.

Table 1. Single Duct or Supply Exhaust Balancing Sequence
Submenu 1	Submenu 2	Submenu 3	Data Range	Edit-able	Description
Controller Address [25]	--	--	000 - 127	No	DIP switch address of the controller. Enter button moves to next action.
Balance Mode [BAL]	Supply Duct [SPLY]	dP Offset [dPO]	00.00 - 99.99	No	Absolute value of offset in %. If greater than 10%, the damper may not be closing completely. Verify that the damper shaft has not slipped and is moving freely. Then autocalibrate the dP.
		Auto Calibrate dP [ACAL]	No [NO] Yes [YES]	Yes	Selecting YES closes the box and recalibrates the dP Offset.
		Flow Setpoint Override [FLSP]	None [NONE] Cooling Max [CMAX] Cooling Min [CMIN] Heating [HTg] Closed [OFF]	Yes	Once entered, the controller drives to the selected setpoint. The override remains active for 30 minutes (configurable in the controller’s application). Select [NONE] to remove the override.
		Actual Flow [FLOW]	0001 - 9999	Yes	Displays measured flow until user adjusts. Adjustment triggers the controller to recalculate the Gain. (The application determines if units are CFM, L/S, or CM/Hr; maximum value of range 9999 CM/Hr.)
		Box Gain - K Factor [K]	0.001 - 9.999	No	If actual flow is entered, this displays the new current gain.
		EXIT	--	No	Press Enter to return to the previous menu. Turn the knob to loop through the current menu.
Balance Mode [BAL] (Cont.)	Exhaust Duct [EXH]	dP Offset [dPO]	00.00 - 99.99	No	Absolute value of offset in %. If greater than 10%, the damper may not be closing completely. Verify that the damper shaft has not slipped and is moving freely. Then autocalibrate the dP.
		Auto Calibrate dP [ACAL]	No [NO] Yes [YES]	Yes	Selecting Yes closes the box and recalibrates the dP Offset.
		Flow Setpoint Override [FLSP]	None [NONE] Cooling Max [CMAX] Cooling Min [CMIN] Heating [HTg] Closed [OFF]	Yes	Once entered, the controller drives to the selected setpoint. The override remains active for 30 minutes (configurable in the controller’s application). Select [NONE] to remove the override.
		Actual Flow [FLOW]	0001 - 9999	Yes	Displays measured flow until adjusted by user. When adjusted and entered, it triggers the controller to recalculate the Gain. (Units may be CFM, L/S, or CM/Hr maximum value of range as determined by application; however, the range is limited to a maximum value of 9999 CM/Hr.)
		Pickup Gain - K Factor [K]	0.001 - 9.999	No	If actual flow is entered, this displays the new current gain (K).
		Exit [EXIT]	--	No	Press the Enter button to return to the previous menu. Turn the knob to loop through the current menu.
	Exit [EXIT]	--	--	No	Press the Enter button to return to the previous menu. Turn the knob to loop through the current menu.
Parameter Mode [PARM]	Flow Setpoints [FLSP]	Cooling Max Flow [CMAX]	0001 - 9999	Yes	Occupied Setpoint Only. Units may be CFM, L/S, and CM/Hr as determined by application.
		Cooling Min Flow [CMIN]	0000 - 9999	Yes	Occupied Setpoint Only. Units may be CFM, L/S, and CM/Hr as determined by application.
		Heating Flow [HTg]	0000 - 9999	Yes	Occupied Setpoint Only. Application determines units: CFM, L/S, and CM/Hr.
		Differential Flow [dIFF]	-999 - 999	Yes	Displays only in Supply/Exhaust applications. Application determines units: CFM, L/S, and CM/Hr.
		Exit [EXIT]	--	No	Press the Enter button to return to the previous menu. Turn the knob to loop through the current menu.
Parameter Mode [PARM] (Cont.)	Supply Duct [SPLY]	Box Area [AREA]	0.001 - 9.999	Yes	Square Feet or Square Meters as determined by the application.
		Pickup Gain - K Factor [K]	0.001 - 9.999	No	--
		dP Offset [dPO]	00.00 - 99.99	No	Absolute value of offset in percent.
		Exit [EXIT]	--	No	Press the Enter button to return to the previous menu. Turn the knob to loop through the current menu.
	Exhaust Duct [EXH]	Box Area [AREA]	0.001 - 9.999	Yes	Square Feet or Square Meters as determined by the application.
		Pickup Gain - K Factor [K]	0.001 - 9.999	No	--
		dP Offset [dPO]	00.00 - 99.99	No	Absolute value of offset in percent.
		Exit [EXIT]	--	No	Press the Enter button to return to the previous menu. Turn the knob to loop through the current menu.
	Exit [EXIT]	--	--	No	Press the Enter button to return to the previous menu. Turn the knob to loop through the current menu.
Exit [EXIT]	--	--	--	No	Press the Enter button to return the Network Sensor to normal operation and release the Flow Setpoint override (if required). Turn the knob to loop through the current menu.

Balancing a single duct system - Metasys - LIT-12011087 - NS-ATV7001-0 - NS-ATV7002-0 - NS-ATV7003-0 - NS-BTV7001-0 - NS-BTV7002-0 - Accessory - Handheld VAV Balancing Sensor/Tool - 6

VAV Balancing Tool and Network Sensors Technical Bulletin