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#4 Pins Jumpered
A-
Motor runs at 50% for 30 seconds.
B-
Motor then runs at 82% for approximately 7-1/2
minutes. If demand has not been satisfied after 7-1/2
minutes,
C-
Motor runs at 100% until demand is satisfied.
D-
Once demand is met, motor runs at 50% for 30
seconds.
E-
Motor ramps down to stop.
A
B
OFF
OFF
C
D
E
1/2 MIN
50% CFM
COOLING DEMAND
7 1/2 MIN
82% CFM
100%
CFM
1/2 MIN
50% CFM
Check-Out Procedures
NOTE
- Refer to outdoor unit installation instructions for
system start-up instructions and refrigerant charging
instructions.
PRE‐START‐UP CHECKS
●
Is the air handler properly and securely installed?
●
If horizontally configured, is the unit sloped up to 5/8”
toward drain lines?
●
Will the unit be accessible for servicing?
●
Has a secondary (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?
●
Have ALL unused drain pan ports been properly
plugged?
●
Has the condensate line been properly sized, run,
trapped, pitched and tested?
●
Is the duct system correctly sized, run, sealed and
insulated?
●
Have all cabinet openings and wiring been sealed?
●
Is the indoor coil factory‐installed TXV properly sized
for the outdoor unit being used?
●
Have all unused parts and packaging been disposed
of properly?
●
Is the filter clean, in place and adequately size?
●
Is the wiring neat, correct and in accordance with the
wiring diagram?
●
Is the unit properly grounded and protected (fused)?
●
Is the thermostat correctly wired and in a good
location?
●
Are all access panels in place and secure?
CHECK BLOWER OPERATION
●
Set thermostat to FAN ON.
●
The indoor blower should come on.
CHECK COOLING OPERATION
●
Set thermostat to force a call for cooling
(approximately 5ºF lower than the indoor ambient
temperature).
●
The outdoor and indoor units should come on
immediately.
●
Check the airflow from a register to confirm that the
system is moving cooled air.
●
Set the thermostat 5ºF higher than the indoor
temperature. The indoor blower and outdoor unit
should cycle off. Air handler should cycle off 45
seconds after the outdoor unit shuts off.
CHECK ELECTRIC HEATER (IF USED)
●
Set thermostat to call for auxiliary heat (approximately
5°F above ambient temperature). The indoor blower
and auxiliary heat should come on together. Allow a
minimum of 3 minutes for all sequencers to cycle on.
●
Set the thermostat so that it does not call for heat.
Allow up to 5 minutes for all sequencers to cycle off.
Maintenance
IMPORTANT
Do not operate system without a filter. A filter is required
to protect the coil, blower, and internal parts from exces
sive dirt and dust. The filter is placed in the return duct
by the installer.
●
Inspect air filters at least once a month and replace or
clean as required. Dirty filters are the most common
cause of inadequate heating or cooling performance.
●
Replace disposable filters. Cleanable filters can be
cleaned by soaking in mild detergent and rinsing with
cold water.
●
Install new/clean filters with the arrows on the side
pointing in the direction of airflow. Do not replace a
cleanable (high velocity) filter with a disposable (low
velocity) filter unless return air system is properly sized
for it.
●
If water is seen dripping from the secondary drain line,
contact a qualified service technician. This is a sign of
a problem which must be investigated and corrected.
Cabinet Insulation
IMPORTANT
DAMAGED INSULATION MUST BE REPAIRED OR
REPLACED before the unit is put back into operation. In
sulation loses its insulating value when wet, damaged,
separated or torn.
Matt‐ or foil-faced insulation is installed in indoor
equipment to provide a barrier between outside air
conditions (surrounding ambient temperature and
humidity) and the varying conditions inside the unit. If the
insulation barrier is damaged (wet, ripped, torn or
