Indoor Blower Test; Checkout Procedures; Pre-Start-Up Checks; Check Cooling Operation - Lennox CBX32MV-018/024 Manual

Indoor Blower Test

To enter blower test mode, push
and hold button next to single
character LED display until —
(Solid bar), then release button.
(Solid bar) starts blinking
Control will cycle the indoor blower motor for ten seconds at 70% of maximum air for selected capacity size unit.
Control will automatically exit Indoor Blower Test Mode.

Checkout Procedures

NOTE - Refer to outdoor unit installation instructions for
system start-up instructions and refrigerant charging
instructions.
PRE‐START‐UP CHECKS
S
Is the air handler properly and securely installed?
S
If horizontally configured, is the unit sloped up to 1/4
inch toward drain lines?
S
Will the unit be accessible for servicing?
S
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?
S
Have ALL unused drain pan ports been properly
plugged?
S
Has the condensate line been properly sized, run,
trapped, pitched, and tested?
S
Is the duct system correctly sized, run, sealed, and
insulated?
S
Have all cabinet openings and wiring been sealed?
CBX32MV
Indoor Blower Test Mode
Control in Idle Mode
(No heating cooling or indoor
Yes
fan operation)
_
_
Page 44
No
Turn room thermostat to
Push and hold button until the
solid A symbol is displayed on the
single character LED display, then
release button.
S
Is the indoor coil factory‐installed TXV properly sized
for the outdoor unit being used?
S
Have all unused parts and packaging been disposed
of?
S
Is the filter clean, in place, and of adequate size?
S
Is the wiring neat, correct, and in accordance with the
wiring diagram?
S
Is the unit properly grounded and protected (fused)?
S
Is the thermostat correctly wired and in a good
location?
S
Are all access panels in place and secure?
CHECK BLOWER OPERATION
S
Set thermostat to FAN ON.
S
The indoor blower should come on.

CHECK COOLING OPERATION

S
Set thermostat to force a call for cooling (approximately
5ºF lower than the indoor ambient temperature).
S
The outdoor unit should come on immediately and the
indoor blower should start between 30 - 60 seconds
later.
S
Check the airflow from a register to confirm that the
system is moving cooled air.
OFF
A