49-5000640 Rev. 0
Installation Preparation
Ductwork
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to the case.
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consideration all fittings, registers and/or diffusers.
DO NOT operate unit without a supply duct
attached.
For installations that require a ducted return, the
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with no bends, turns, contractions, or expansions.
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this page. Use these charts to select your fan speed
setting.
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increase static pressure.
NOTICE:
Flex duct can collapse and cause
airflow restrictions. Do not use flex duct for 90°
bends or unsupported runs of 5 ft. or more.
Indoor Air Flow Data
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then using the chart below to determine the actual
airflow.
Under no circumstances should the Zoneline
unit be operated to an ESP in excess of .3” W.C..
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in inadequate air flow thus leading to poor performance
and/or premature component failure.
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Fan Boost Mode
ON
77
OFF
78
High
CFM
Medium
CFM
Medium
CFM
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CFM
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Your airflow should be balanced based on many
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measured with a manometer or pitot tube. Once this
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the above chart.
INST
ALLA
TION INSTRUCTIONS
Indoor Air Flow Data (cont)
Higher CFMs tend to increase Sensible capacity,
enhance room circulation and increase duct noise,
while lower CFMs tend to increase latent capacity and
reduce noise.
CFM Recommendations
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500
433
363
•
• = Recommended Mid Range
