38TKW
Air Conditioning Unit
Installation and Start-Up Instructions
NOTE:
Read the entire instruction manual before beginning the
installation.
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SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause personal injury or property damage.
Consult a qualified installer, service agency, or your distributor or
branch for information or assistance. The qualified installer or
agency must use factory-authorized kits or accessories when
modifying this product. Refer to the individual instructions pack-
aged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses and work gloves. Use
quenching cloth for brazing operations. Have fire extinguisher
available. Read these instructions thoroughly and follow all
warning or cautions attached to the unit. Consult local building
codes and National Electrical Code (NEC) for special require-
ments.
Recognize safety information. This is the safety-alert symbol
.
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.
Understand these signal words; DANGER, WARNING, and
CAUTION. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which would result in minor personal
injury or product and property damage.
Before installing, modifying, or servicing system, main elec-
trical disconnect switch must be in the OFF position. There
may be more than 1 disconnect switch. Lock out and tag
switch with a suitable warning label. Electrical shock can
cause personal injury or death.
INSTALLATION RECOMMENDATIONS
NOTE:
In some cases, noise in the living area has been traced to
gas pulsations from improper installation of equipment.
1. Locate the unit away from windows.
2. Ensure that vapor and liquid line diameters are appropriate to
the capacity of the unit. (See Table 1.)
3. Run refrigerant tubes as directly as possible by avoiding
unnecessary turns and bends.
4. Leave some slack between the structure and the unit to absorb
vibration.
5. When passing refrigerant tubes through the wall, seal the
opening with RTV or other pliable silicon-based caulk. (See
Fig. 3.)
6. Avoid direct lineset contact with water pipes, ductwork, floor
joists, wall studs, floors, and walls.
7. Do not suspend refrigerant tubing from joists and studs with a
rigid wire or strap which comes in direct contact with the
tubing. (See Fig. 3.)
8. Ensure that tubing insulation is pliable and completely sur-
rounds the vapor line.
9. When necessary, use hanger straps which are 1 in. wide and
conform to the shape of the tubing insulation. (See Fig. 3.)
10. Isolate the hanger straps from the insulation by using metal
sleeves bent to conform to the shape of the insulation.
When outdoor unit is connected to factory-approved indoor unit,
outdoor unit contains system refrigerant charge for operation with
factory-approved indoor unit of the same size when connected by
15 ft of field-supplied tubing. For proper unit operation, check
refrigerant charge using charging information located on control
box cover.
IMPORTANT:
Maximum liquid-line size is 3/8-in. O.D. for all
residential applications including long line.
IMPORTANT:
Always install a liquid-line filter drier. Refer to
Product Data Digest for appropriate part number. Obtain filter
driers from your local distributor or branch.
Fig. 1—Model 38TKW
A98519
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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1
4
Tab
3a 2a
PC 101
Catalog No. 563-710
Printed in U.S.A.
Form 38TKW-2SI
Pg 1
11-98
Replaces: 38TKW-1SI
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