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C−Charge Verification − Approach Method
8− Using the same thermometer, compare liquid tempera-
ture to outdoor ambient temperature.
Approach Temperature = Liquid temperature minus
ambient temperature.
9− Approach temperature should match values in table
10. An approach temperature greater than value
shown indicates an undercharge. An approach tem-
perature less than value shown indicates an over-
charge.
10− Do not use the approach method if system pressures
do not match pressures in tables 5 through 9. The ap-
proach method is not valid for grossly over or under-
charged systems.
TABLE 10
APPROACH TEMPERATURE
Unit
Liquid Temp. Minus Ambient
Temp.
024S
7°F + 1 (3.9°C + 0.5)
030S, 036S
9°F + 1 (5.0°C + 0.5)
048S, 060S
11°F + 1 (6.1°C + 0.5)
V−MAINTENANCE
The unit should be inspected once a year by a qualified ser-
vice technician.
WARNING
Product contains fiberglass wool.
Disturbing the insulation in this product during
installation, maintenance, or repair will expose you
to fiberglass wool. Breathing this may cause lung
cancer. (Fiberglass wool is known to the State of Cali-
fornia to cause cancer.)
Fiberglass wool may also cause respiratory, skin and
eye irritation.
To reduce exposure to this substance or for further
information, consult material safety data sheets
available from address shown on unit nameplate or
contact your supervisor.
CAUTION
Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and dan-
gerous operation. Verify proper operation after ser-
vicing.
A−Lubrication
All motors are lubricated at the factory. No further lubrica-
tion is required.
B−Filters
Units are equipped with temporary filters which need to be
replaced before the building is occupied. See table 11 for
correct filter size. Refer to local codes or appropriate juris-
diction for approved filters.
Approved filters should be checked monthly and replaced
when necessary. Take note of air flow direction marking on
filter frame when reinstalling filters. See figure 13.
WARNING
Units are shipped from the factory with temporary fil-
ters. Replace filters before building is occupied.
Damage to unit could result if filters are not replaced
with approved filters. Refer to appropriate codes.
TABLE 11
UNIT FILTERS
Unit
Qty Filter Size − inches (mm)
024, 030, 036, 048,
4
16 X 20 X 2 (406 X 508 X 51)
060
4
20 X 20 X 2 (508 X 508 X 51)
NOTE−Filters must be U.L.C. certified or equivalent for use
in Canada.
C−Supply Air Blower Wheel
Annually inspect supply air blower wheel for accumulated
dirt or dust. Turn off power before attempting to remove ac-
cess panel or to clean blower wheel.
D−Indoor Coil
Inspect and clean coil at beginning of each cooling and
heating season. Clean using mild detergent or commercial
coil cleanser. Flush coil and condensate drain with water
taking care not to get insulation, filters and return air ducts
wet.
E−Outdoor Coil
Clean outdoor coil annually with detergent or commercial
coil cleaner and inspect monthly during the cooling season.
Outdoor coils are made of single and two formed slabs. On
units with two slabs, dirt and debris may become trapped
between the slabs. To clean between slabs, carefully sepa-
rate coil slabs and wash them thoroughly. See figure 14.
Flush coils with water following cleaning.
Note − Remove all screws and gaskets prior to cleaning
procedure and replace upon completion.
F−Filter Drier
The unit is equipped with a biflow filter drier. if replacement
is necessary, order another of like design.
Summary of Contents for KHA SERIES
Page 41: ...Page 41 KHA036 048 060 Y Voltage 1 2 5 9 3 11 6 7 8 4 4 5 5 8 9 9 10...
Page 42: ...Page 42 KHA036 048 060 G J Voltage 1 2 5 9 3 11 6 7 8 4 4 5 5 7 9 9 10 11...
Page 46: ...Page 46 T1EH 7 5 10 15 22 5 kW P VOLTAGE 1 3 4 5 6 7 2 4 4 4 7 7 7...
Page 47: ...Page 47 T1EHA 7 5 15 22 5kW Y VOLTAGE KHA SERIES UNITS 1 3 4 5 6 7 2 4 7...
Page 48: ...Page 48 T1EHA 7 5 15 22 5kW G J VOLTAGE KHA SERIES UNITS 1 3 4 5 6 7 2 4 7...
