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

Brand
Metasys
Product name
Handheld VAV Balancing Sensor/Tool
Document type
Technical Bulletin
Document number
LIT-12011087
Version
6
Revision date
2018-11-19
Language
English

To balance a single duct system:

  1. Use Table 1 to navigate through the VAV Balancing Device menus.
  2. 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.