Carrier 38BYC- Manual
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Table of Contents:
- Page 2 – Fig. 2—Connecting Tubing Installation; UNIT
- Page 3 – Step 7—Check Outdoor AccuRater® Piston; Fig. 4—Typical TXV Installation; Fig. 5—Positioning of Sensing Bulb; SENSING BULB; Fig. 6—Defrost Thermostat Location; FEEDER TUBE
- Page 4 – Step 10—Make Electrical Connections; PISTON BODY
- Page 5 – Step 11—Compressor Crankcase Heater; Close electrical disconnects to energize system.; Table 2—Accessory Usage; CONTACTOR
- Page 6 – Fig. 9—Generic Wiring Diagram; LEGEND
- Page 7 – Step 14—Check Charge; Fig. 10—Defrost Control
38BYC, 38BYG
12 SEER Split System
Heat Pump
Installation and Start-Up Instructions
NOTE:
Read the entire instruction manual before starting the
installation.
This symbol
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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 the signal words DANGER, WARNING, and CAU-
TION. These words are used with the safety-alert symbol. DAN-
GER 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.
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, and so forth
where unit operation sounds 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. Leave some slack between structure and unit to absorb
vibration.
5. When passing refrigerant tubes through the wall, seal opening
with RTV or other pliable silicon based caulk. (See Fig. 2.)
6. Avoid direct tubing contact with water pipes, duct work, floor
joists, wall studs, floors, and walls.
7. Do not suspend refrigerant tubing from joists and studs with a
rigid wire or strap that comes in direct contact with tubing.
(See Fig. 2.)
8. Ensure that tubing insulation is pliable and completely sur-
rounds vapor tube.
9. When necessary, use hanger straps which are 1 in. wide and
conform to shape of tubing insulation. (See Fig. 2.)
10. Isolate hanger straps from insulation by using metal sleeves
bent to conform to shape of insulation.
When outdoor unit is connected to factory-approved indoor unit,
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 including long line.
IMPORTANT:
Always install a liquid line filter drier on any
system using existing field service line sets and or existing indoor
coil or fan coil units. Always use a filter direr on burnout unit
replacements.
Fig. 1—Model 38BYG
A98525
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
5a 5a
PC 101
Catalog No. 533-80078
Printed in U.S.A.
Form 38BYC-3SI
Pg 1
11-02
Replaces: 38BYC-2SI
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Summary
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If TXV installation is required, remove existing AccuRater® fromindoor coil. Refer to Figs. 4 and 5 and install TXV kit as follows: 1. Install suction tube adapter. 2. Install liquid flare-to-sweat adapter. 3. Connect external equalizer tube to fitting on suction tube adapter. 4. Position sensing bu...
OUTDOOR UNIT CONNECTED TO FACTORY APPROVEDINDOOR UNIT Outdoor unit contains correct system refrigerant charge for opera-tion with indoor unit of same size when connected by 15 ft offield-supplied or factory accessory tubing. Check refrigerantcharge for maximum efficiency. REFRIGERANT TUBING Connect ...
