Halton Capture Ray KVE-UV Operator's Manual page 12

CLOSURE PANEL ASSEMBLY - HOODS WITH KDS RISERS
OPERATION OF SYSTEM
After installation is complete it will be necessary to check and balance the airflows through each
hood. The static pressure for each hood is listed in the hood information table on the job specific
submittal drawings. The specific exhaust static pressure for each hood should be referenced for
the airflow balance for that hood. The exhaust air being drawn through the grease filters creates a
negative static pressure behind the filters in the exhaust plenum. This negative static pressure can
be measured and has a direct relationship to the total exhaust airflow measured in CFM (Cubic Feet
per Minute). Halton Capture Jet hoods are calibrated based on the model of hood and the number
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of grease filters the hood has. A static pressure curve is provided with each hood which allows
the air balancer to easily set up the exhaust fan to draw the correct exhaust CFM through the hood
based on measuring the static pressure of the exhaust plenum. On the Capture Jet line of hoods,
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Halton supplies T.A.B. (Testing And Balancing) ports for measuring the negative static pressure drop
through the filters and also the positive Capture Jet plenum pressure. These ports are located on the
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inside of the capture portion of the canopy on the exhaust and Capture Jet plenums. The T.A.B. port
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for measuring exhaust static pressure is on the exhaust plenum side of the hood, near the top inside
panel and is found near one of the corners above the grease filters. The T.A.B. port for measuring
the Capture Jet static pressure is found in the inner front of the hood, near the top inside panel and
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near one of the corners of the inner face. There is a black plastic cap on each of the brass T.A.B. port
fittings to keep them clean. The cap should be removed for taking the static pressure measurements
and then replaced when the measurements are completed. The exhaust static pressure is measured
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Capture Ray ® UV Operation & Maintenance Manual