RS4100004 Rev. 0
32
Cooling Wattage Consumption Test
To perform cooling wattage consumption test:
1. Attach wattmeter to unit under test.
2. Turn unit under test on. Place
FAN CONTROL in
(normal) high cooling position,
TEMPERATURE
CONTROL to coolest setting, and VENT CONTROL
to closed position. Allow unit to run a minimum of 20
minutes before any readings are taken.
3. Record outdoor temperature in vicinity of air
conditioner.
NOTE: When recording outdoor temperature, avoid
exposing thermometer to direct sunlight or
condenser discharge air.
4. Using sling psychrometer, record indoor wet bulb
temperature (see paragraph
Taking Sling
Psychrometer Readings).
5. Record wattmeter reading.
NOTE: The remaining steps explain how to determine if
unit under test is operating within specifications,
using figures recorded in previous steps. See
Cooling Wattage Input Chart (on Technical Sheet
for unit under test) to complete remaining steps.
See Usi
ng Cooling Wattage Input Chart graphic
for additional directions.
6. In
OUTSIDE AIR ENTERING CONDENSER column
(on chart), locate temperature nearest to temperature
recorded in step 3. Use associated room air wet bulb
temperatures (shown in next column on chart) in
following step.
7. Using room air wet bulb temperatures associated with
dry bulb temperature located in previous step, find
temperature on chart nearest to wet bulb sling
psychrometer reading obtained in step 4.
8. Note minimum (MIN) and maximum (MAX) values
shown to right of associated dry bulb/wet bulb
temperatures.
Unit under test is within wattage specifications if
wattmeter reading recorded in step 5 falls within
minimum and maximum values noted in step 8. Unit is
out of specifications if calculation from step 5 is greater
or less than values from step 8. (See paragraph
Performance Test Diagnosis Guide for additional
information.)
Performance Tests
!
WARNING
To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit and
discharge capacitor through a 10,000 ohm resistor before attempting to service, unless test procedures require
power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or
operational.
Cooling Wattage Input Chart
Outside Air
Entering
Condenser
Inside Air
Entering
Evaporator
Acceptable
Wattage Range
°F Dry Bulb
°F Wet Bulb
MIN
MAX
85
485
550
80
490
555
75
490
555
100
70
490
555
65
485
550
60
475
540
55
465
530
85
460
525
80
465
525
75
465
530
95
70
465
525
Find outside air
temperature
nearest to that
recorded in step 3
in this column.
Wattmeter reading
should be within
minimum and maximum
values shown in last two columns.
Find associated
wet bulb
temperature here
Using Cooling Wattage Input Chart
