Carrier 38TDB- Manual

38TDB

WeatherMaker™ Two-Speed

Air Conditioning Unit with Puron®

Installation and Start-Up Instructions

NOTE:

Read the entire instruction manual before starting the

installation.

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indicates a change since the last issue.

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, 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
packaged with the kits or accessories when installing.

Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have fire extinguisher available. Read these instructions thor-
oughly and follow all warnings or cautions included in literature
and attached to the unit. Consult local building codes and National
Electrical Code (NEC) for special requirements.

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, CAU-
TION, and NOTE. 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. NOTE is used to
highlight suggestions which will result in enhanced installation,
reliability, or operation.

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.

Puron® (R-410A) systems operate at higher pressures than
standard R-22 systems. Be certain that service equipment is
rated for Puron®. Some R-22 service equipment may not be
acceptable. Check with your distributor.

INSTALLATION RECOMMENDATIONS

NOTE:

In some cases noise in the living area has been traced to

gas pulsations from improper installation of equipment.

1. Locate unit away from windows, patios, decks, etc. where unit

operation sound may disturb customer.

2. Ensure that vapor and liquid tube diameters are appropriate to

capacity of unit.

3. Run refrigerant tubes as directly as possible by avoiding

unnecessary turns and bends.

4. When passing refrigerant tubes through the wall, seal opening

with RTV or other pliable silicon-based caulk. (See Fig. 2.)

5. Avoid direct tubing contact with water pipes, duct work, floor

joists, wall studs, floors, and walls.

6. Do not suspend refrigerant tubing from joists and studs with a

rigid wire or strap which comes in direct contact with tubing.
(See Fig. 2.)

7. Ensure that tubing insulation is pliable and completely sur-

rounds vapor tube.

8. When necessary, use hanger straps which are 1 in. wide and

conform to shape of tubing insulation. (See Fig. 2.)

9. Isolate hanger straps from insulation by using metal sleeves

bent to conform to shape of insulation.

Outdoor unit contains system refrigerant charge for operation with
indoor unit of the same size when connected by 15 ft of
field-supplied or factory accessory tubing. For proper unit opera-
tion, 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.

IMPORTANT:

Only install the factory-supplied Puron® (R-

410A) air conditioner liquid line filter drier. Obtain replacement
filter driers from your local distributor.

INSTALLATION

Step 1—Check Equipment and Job Site

UNPACK UNIT

Move to final location. Remove carton, taking care not to damage
unit.

Fig. 1—Model 38TDB

A98516

Visit www.carrier.com

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. 533-80059

Printed in U.S.A.

Form 38TDB-4SI

Pg 1

8-02

Replaces: 38TDB-3SI