507838-01
Issue 1813
Page 16 of 19
Homeowner Maintenance
Do not operate system without a filter. A filter is required
to protect the coil, blower, and internal parts from
excessive dirt and dust. The filter is placed in the return
duct by the installer.
IMPORTANT
•
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 air flow. 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 should start coming from the secondary drain
line, a problem exists which should be investigated
and corrected. Contact a qualified service technician.
Professional Maintenance
Failure to follow instructions will cause damage to the
unit.
This unit is equipped with an aluminum coil. Aluminum
coils may be damaged by exposure to solutions with
a pH below 5 or above 9. The aluminum coil should
be cleaned using potable water at a moderate pressure
(less than 50psi). If the coil cannot be cleaned using
water alone, it is recommended to use a coil cleaner
with a pH in the range of 5 to 9. The coil must be rinsed
thoroughly after cleaning.
In coastal areas, the coil should be cleaned with potable
water several times per year to avoid corrosive buildup
(salt).
NOTICE
Repairing or Replacing Cabinet Insulation
DAMAGED INSULATION MUST BE REPAIRED OR
REPLACED
before the unit is put back into operation.
Insulation loses its insulating value when wet, damaged,
separated or torn.
IMPORTANT
Matte- 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 separated from the cabinet
walls), the surrounding ambient air will affect the inside
surface temperature of the cabinet. The temperature/
humidity difference between the inside and outside of the
cabinet can cause condensation on the inside or outside
of the cabinet which leads to sheet metal corrosion and
subsequently, component failure.
Repairing Damaged Insulation
Areas of condensation on the cabinet surface are an
indication that the insulation is in need of repair.
If the insulation in need of repair is otherwise in good
condition, the insulation should be cut in an X pattern,
peeled open, glued with an appropriate all-purpose glue
and placed back against the cabinet surface, being careful
to not overly compress the insulation so the insulation can
retain its original thickness. If such repair is not possible,
replace the insulation. If using foil-faced insulation, any
cut, tear, or separations in the insulation surface must be
taped with a similar foil-faced tape.
Electric Shock Hazard.
Can cause injury or death.
Foil-faced insulation has conductive
characteristics similar to metal. Be sure
there are no electrical connections within
1/2ʺ of the insulation. If the foil-faced
insulation comes in contact with electrical
voltage, the foil could provide a path for
current to pass through to the outer metal
cabinet. While the current produced may
not be enough to trip existing electrical
safety devices (e.g., fuses or circuit
breakers), the current can be enough
to cause an electrical shock hazard that
could cause personal injury or death.
IMPORTANT
1. CUT INSULATION IN X PATTERN
2. APPLY GLUE
3. PRESS GLUED TABS AGAINST CABINET
GLUE - Make sure there is
full coverage of glue on the
metal or insulation so there
are no areas where air
pockets may form which
can lead to sweating.
Figure 13. Repairing Insulation
