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7

74-3965

STOP

SELECT "MAXIMUM"

CHECK

TROUBLESHOOTING

AND RULES OF THUMB;

MAKE CORRECTIONS

SELECT "PREVIOUS MENU"

ENTER MEASURED VALUE IN CFM AND PRESS ENTER

HAS

AIRFLOW 

STABILIZED,

INDICATED BY 

THE HHT2

BEEP?

YES

NO

SELECT "MINIMUM"

CHECK

TROUBLESHOOTING

AND RULES OF THUMB;

MAKE CORRECTIONS

ENTER MEASURED VALUE IN CFM AND PRESS ENTER

HAS

AIRFLOW 

STABILIZED,

INDICATED BY 

THE HHT2

BEEP?

YES

NO

PRESS ANY KEY THEN SELECT "BALANCE VAV2"

A

Summary of Contents for Excel 10

Page 1: ... VAV Air Balancers Contractors and Honeywell Technicians balancing the Excel 10 VAV II family of controllers using E vision LONSPEC or the hand held tool The guide covers general troubleshooting tips rules of thumb and step by step guides of these tools The guide is not intended to replace the Excel 10 VAV software tools User Guides but rather to act as a supplement ...

Page 2: ...l 10 VAV II Controllers must have an air flow pickup table downloaded to ensure accurate balancing Configuration tools do not automatically install the flow pickup table defined for the controller If VAV II Controllers are not balancing check with the Honeywell Authorized technician or Honeywell contractor that the flow pickup table download to each controller has occurred Testing Airflow Measurem...

Page 3: ...al operation with both airflow pickup tubes connected to the controller Flow Pickup Pressure Physical Measurement Physical measurement of the flow pickup pressure for the purpose of testing is best done with an instrument capable of displaying pressure to 0 01 0 005 in w c Though electronic gauges and sensors often offer the necessary accuracy their sensitivity can cause problems in field applicat...

Page 4: ...ive parameters If there is a rapid cycling of the sensed airflow when the balancing is completed unexpected and large air balance value swings can occur If this is noted an adjustment of the damper drive parameters may be required Airflow Setpoint Rule Maximum Maximum airflow setpoint cannot result in a duct velocity greater than 3500 fpm Maximum airflow setpoint must be greater than the Minimum a...

Page 5: ...irflow balance procedure Airflow Velocity Less Than 200 fpm Check the velocity at the minimum airflow setpoint If the minimum airflow velocity is at or below 200 fpm try increasing the minimum airflow setpoint Airflow Sensor If there are issues in the minimum airflow balancing one possible area to check is the operation of the airflow sensor itself ...

Page 6: ...ng this task See S7751A Hand Held Tool II Product Data Form 74 3031 START PLUG HHT2 INTO LONWORKS NETWORK ACCESS LOCATION TURN ON HHT2 SELECT HHT2 FUNCTION SELECT CHANGE AUTHORIZATION SELECT BALANCE VAV2 PRESS TOP MENU BUTTON ENTER AAAA SELECT EXCEL 10 SELECT EXCEL 10 TO BE BALANCED THROUGH ENTERING NODE NEURON ID OR IF A NON NETWORKED CONTROLLER USE STANDALONE ID A ...

Page 7: ...TER MEASURED VALUE IN CFM AND PRESS ENTER HAS AIRFLOW STABILIZED INDICATED BY THE HHT2 BEEP YES NO SELECT MINIMUM CHECK TROUBLESHOOTING AND RULES OF THUMB MAKE CORRECTIONS ENTER MEASURED VALUE IN CFM AND PRESS ENTER HAS AIRFLOW STABILIZED INDICATED BY THE HHT2 BEEP YES NO PRESS ANY KEY THEN SELECT BALANCE VAV2 A ...

Page 8: ...mmissioning and flow table download steps must be completed before starting this task See LONSPEC User Guide Form 74 2937 LAUNCH LONSPEC VAV II PLUG IN HIGHLIGHT HONEYWELL VAV2 CALIBRATE AND SELECT OK SELECT FLOW CALIBRATION TAB ON THE SENSOR CALIBRATION SCREEN FOR XL10 VAV2 START A ...

Page 9: ...MAXIMUM AIR BALANCE CLICK THE START BUTTON UNDER THE ACTION WINDOW SELECT MINIMUM STOP HAS MEASURED FLOW BOX TURNED WHITE YES STABLE FLOW IS NOT YET REACHED NO ENTER STABLE FLOW MEASURED VALUE MINIMUM AIR BALANCE CLICK THE START BUTTON HAS MEASURED FLOW BOX TURNED WHITE YES STABLE FLOW IS NOT YET REACHED NO A ...

Page 10: ...rting this task See E Vision User Guide Form 74 2588 DOUBLE CLICK E VISION SELECT A VAV II CONTROLLER FROM THE NETWORK DIAGRAM FROM THE CALIBRATION DIALOG BOX CLICK THE MAXIMUM BUTTON CLICK MENU ITEM CONTROLLER AND THEN CLICK CALIBRATE MAXIMUM AIR BALANCE ENTER MEASURED FLOW IN CFM AND THEN CLICK CALIBRATE STABLE FLOW REACHED NO YES START A ...

Page 11: ...NEW VALUES FOR THE MAX AND MIN FLOW SETPOINTS MINIMUM AIR BALANCE A ENTER MEASURED FLOW IN CFM AND THEN CLICK CALIBRATE STABLE FLOW REACHED NO YES FROM THE CALIBRATION DIALOG BOX CLICK THE MINIMUM BUTTON FROM THE CALIBRATION DIALOG BOX CLICK THE SETPOINTS BUTTON ...

Page 12: ... U S A on recycled paper containing at least 10 post consumer paper fibers Automation and Control Solutions Honeywell International Inc Honeywell Limited Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley MN 55422 Scarborough Ontario M1V 4Z9 LONSPEC is a trademark of Echelon Corporation ...

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