Instruction manual

I. AIR FILTER
IMPORTANT: Never operate the unit without a suitable air filter
in the return-air duct system. Always replace the filter with the
same dimensional size and type as originally installed (See Tables
1 and 2 for recommended filter sizes.)
Inspect air filter(s) at least once each month and replace
(throwaway-type) or clean (cleanable-type) at least twice during
each cooling season or whenever the filter becomes clogged with
dust and lint.
II. INDOOR BLOWER AND MOTOR
NOTE: All motors are prelubricated. Do not attempt to lubricate
these motors.
For longer life, operating economy, and continuing efficiency,
clean accumulated dirt and grease from the blower wheel and
motor annually.
WARNING: Disconnect and tag electrical power to the
unit before cleaning and lubricating the blower motor and
wheel. Failure to adhere to this warning could cause
serious injury or death.
III. OUTDOOR COIL, INDOOR COIL, AND
CONDENSATE DRAIN PAN
Inspect the condenser coil, evaporator coil, and condensate drain
pan at least once each heating and cooling season or sooner if
conditions require.
The coils are easily cleaned when dry; therefore, inspect and clean
the coils either before or after each cooling season. Remove all
obstructions, including weeds and shrubs, that interfere with the
airflow through the condenser coil.
Straighten bent fins with a fin comb. If coated with dirt or lint,
clean the coils with a vacuum cleaner, using the soft brush
attachment. Be careful not to bend the fins. If coated with oil or
grease, clean the coils with a mild detergent-and-water solution.
Rinse coils with clear water, using a garden hose. Be careful not to
splash water on motors, insulation, wiring, or air filter(s). For best
results, spray condenser coil fins from inside to outside the unit.
On units with an outer and inner condenser coil, be sure to clean
between the coils. Be sure to flush all dirt and debris from the unit
base.
Inspect the drain pan and condensate drain line when inspecting
the coils. Clean the drain pan and condensate drain by removing all
foreign matter from the pan. Flush the pan and drain trough with
clear water. Do not splash water on the insulation, motor, wiring,
or air filter(s). If the drain trough is restricted, clear it with a
“plumbers snake” or similar probe device. Ensure that the auxiliary
drain port above the drain trough is also clear.
IV. OUTDOOR FAN
CAUTION: Keep the condenser fan free from all ob-
structions to ensure proper cooling operation. Never place
articles on top of the unit. Damage to unit may result.
1. Inspect the fan blades for cracks or bends.
2. If fan needs to be removed, remove screws holding outdoor
air intake grille and remove grille.
3. Loosen the setscrew and slide the fan off the motor shaft.
4. When replacing fan blade, position blade so that the hub is
1/8 in. (See Fig. 21) away from the motor end (1/8 in. of
motor shaft will be visible) .
5. Ensure that setscrew engages the flat area on the motor shaft
when tightening.
6. Replace grille.
Fig. 25—601A Balance Point Worksheet
C00094
Balance Point Worksheet
0
10
20
30
40
50
60
70
-100 1017203040475060
Outdoor Air Temp (Deg F)
018
024
030
036
042
048
060
Based on Indoor Entering Air of 70 F and Rated CFM
Building Heat Loss, 1000BTUH
Unit Integrated Heating Capacity (x1000BTUH)
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