Carrier 38YSA Instruction Manual download pdf

38YSA

Split-System Heat Pump

Installation and Start-Up Instructions

NOTE: Read the entire instruction manual before starting 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 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 installtion, 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, etc. 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 which 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. Refer to

Product Data Digest for appropriate part number. Obtain filter

drier from service parts or your distributor or branch.

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 38YSA

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 5a 5a

PC 101 Catalog No. 533-80022 Printed in U.S.A. Form 38YSA-4SI Pg 1 02-02 Replaces: 38YSA3SI

1 2 3 4 5 6 ... 11 12

Summary of Contents

Page 1 - Split-System Heat Pump

38YSASplit-System Heat PumpInstallation and Start-Up InstructionsNOTE: Read the entire instruction manual before starting theinstallation.This symbol

Page 2 - Fig. 4—Accessory Support Feet

WIRING DIAGRAM NOTES:1. CARRIER THERMOSTAT WIRING DIAGRAMS ARE ONLY ACCU-RATE FOR MODEL NUMBERS BEGINNING WITH TSTAT_______.2. WIRING MUST CONFORM TO

Page 3 - FEEDER TUBE

providing electrical potential to second heater sequencer (if used).If outdoor temperature falls below setting of outdoor thermostat(field-installed o

Page 4 - Table 2—Accessory Usage

Step 14—Final ChecksIMPORTANT: Before leaving job, be sure to do the following:1. Securely fasten all panels and covers.2. Tighten service valve stem

Page 5 - Fig. 8—Line Power Connections

INSPECT EQUIPMENTFile claim with shipping company prior to installation if shipmentis damaged or incomplete. Locate unit rating plate on unit cornerpa

Page 6 - J2 JUMPER

Step 6—Thermostatic Expansion ValveFor proper unit operation and reliability, units must beinstalled with field-supplied hard shutoff TXV. Do not inst

Page 7

For buried-line applications greater than 36 in., consult your localdistributor.If refrigerant tubes or indoor coil are exposed to atmosphere, theymus

Page 8 - FOR HEAT

The unit cabinet must have an uninterrupted or unbrokenground to minimize personal injury if an electrical faultshould occur. The ground may consist o

Page 9

Fig. 9—Typical 24-v Circuit Connections using Carrier Model HP Thermostat with Fan Coilsand No Outdoor Thermostat, 1 Outdoor Thermostat, or 2 Outdoor

Page 10 - WIRING DIAGRAM NOTES:

Fig. 10—Typical 24-v Circuit Connections using Other HP Thermostats with Fan Coils andNo Outdoor Thermostat, 1 Outdoor Thermostat, or 2 Outdoor Thermo

Page 11 - Fig. 14−Defrost Control

Fig. 11—Typical 24-v Circuit Connections using Carrier Model HP Thermostat with Smart Heat andNo Outdoor Thermostat, 1 Outdoor Thermostat, or 2 Outdoo

Page 12 - Tab 5a 5a

Fig. 12—Typical 24-v Circuit Connections using Other HP Thermostats with Smart Heat andNo Outdoor Thermostat, 1 Outdoor Thermostat, or 2 Outdoor Therm