Start-Up Operations - Lennox CBX25UH Series Installation And Service Procedure

Start-Up Operation
NOTE - Refer to outdoor unit installation instructions for
system start-up instructions and refrigerant charging
instructions.
PRE‐START‐UP CHECKS
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Is the air handler properly and securely installed?
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If horizontally configured, is the unit sloped up to 5/8
inch toward drain lines?
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Will the unit be accessible for servicing?
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Has an auxiliary pan been provided under the unit with
separate drain for units installed above a finished
ceiling or in any installation where condensate overflow
could cause damage?
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Have ALL unused drain pan ports been properly
plugged?
Figure 29. Unit Wiring Diagram - Electric Heat and Air Handler
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Has the condensate line been properly sized, run,
trapped, pitched, and tested?
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Is the duct system correctly sized, run, sealed, and
insulated?
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Have all cabinet openings and wiring been sealed?
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Is the indoor coil factory‐installed TXV properly sized
for the outdoor unit being used?
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Have all unused parts and packaging been disposed
of?
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Is the filter clean, in place, and of adequate size?
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Is the wiring neat, correct, and in accordance with the
wiring diagram?
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Is the unit properly grounded and protected (fused)?
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Is the thermostat correctly wired and in a good
location?
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