Carrier 38YXA User manual

38YXA
13 SEER Split-System
Heat Pump with R-410A
Preliminary Product Fact Sheet
Data for Preliminary Use Only
A92446
This product meets GREEN
SEAL criteria for manufac-
turing, energy efficiency,
sound levels and packaging.
It contains no CFCs or
HCFCs.
As an ENERGY STARSM Carrier
Corporation has determined that
this product meets the ENERGY
STAR guidelines for energy effi-
ciency.
REGISTERED QUALITY SYSTEM
The model 38YXA Heat Pump uses the environmentally-safe refrig-
erant R-410A. The unit is available in nominal sizes 024 through 060.
The unit features a copper tube, enhanced aluminum fin coil for a
compact, low-profile appearance with vertical air discharge.
This unit also features Carrier’s Silencer System which allows
outstanding performance with reduced sound levels. The Silencer
System consists of a compressor sound hood and vibration isolation
plate to muffle compressor noise, a discharge muffler to minimize low
frequency sound and pressure pulsation generated by compressor
discharge gas, an energy-efficient fan and fan motor to move air more
efficiently, and the InViroFlow™ design for an improved airflow
pattern which requires less energy.
All units contain scroll compressors specially designed for use with
R-410A.
FEATURES
• SEER up to 14.5 and HSPF up to 8.5 with specified Carrier
equipment
• Silencer System
• Environmentally-safe refrigerant R-410A
• High-pressure switch
• Low-pressure switch
• PressureGuard™ heating vapor pressure switch
• R-410A liquid-line filter drier
• Compressor sound hood and vibration isolation plate
• Patent-pending accumulator
• Discharge muffler
• Cycle protector
• Crankcase heater on 048 and 060 sizes
• Copper tube aluminum fin coil
• External brass back seating service valves with sweat connections
• AccuRater® piston
• Condenser coil grille
• Electric lug nut
LIMITED WARRANTY
• 1-year parts only warranty on all parts
• Additional 9-year warranty on compressor, no labor
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. 523-854 Printed in U.S.A. Form 38YXA-1PF Pg 1 11-97 Replaces: New

38YXA 024 3 0 1
Deluxe 13 SEER Split-System
Heat Pump with R-410A Packaging
Nominal Capacity Series
024—24,000 Btuh 042—42,000 Btuh Electrical
030—30,000 Btuh 048—48,000 Btuh 3—208/230-1
036—36,000 Btuh 060—60,000 Btuh
Physical Data
UNIT SIZE-SERIES 024-30 030-30 036-30 042-30 048-30 060-31
OPERATING WEIGHT (Lb) 201 194 207 208 253 282
COMPRESSOR
Manufacturer Copeland
Type Scroll
REFRIGERANT R-410A
Control TXV (Cooling)
Charge (Lb) @ 15 Ft 7.18 6.63 8.87 8.63 13.25 13.25
CONDENSER FAN Propeller Type, Direct Drive
Air Discharge Vertical
Air Quantity (CFM) 2400 2800 2800 2800 3300 3300
Motor HP 1/8 1/5 1/5 1/5 1/4 1/4
Motor RPM 825 825 825 825 1100 1100
CONDENSER COIL Copper Tube, Aluminum Plate Fin
Face Area (Sq Ft) 18.18 15.15 12.12 12.12 18.18 18.18
Fins per In. 25 25 20 20 20 20
Rows 1122 22
Circuits 2333 45
VALVE CONNECTION (In. ID) Sweat
Vapor 5/8 3/4 3/4 7/8 7/8 7/8
Liquid 3/8
REFRIGERANT TUBES* (In. OD)
Vapor (0–50 Ft Tube Length) 5/8 3/4 3/4 7/8 7/8 1-1/8
Vapor (Alternate) 3/4 ACR 7/8 7/8 7/8 7/8 7/8
Vapor (RST Not Permitted) 3/4 1-1/8 1-1/8 3/4 and 1-1/8 3/4 and 1-1/8 3/4
Liquid (All Applications) 3/8
* Tube diameters are for lengths up to 50 ft. For tubing lengths greater than 50 ft, consult the Application Guideline and Service Manual for Residential Split-System Air
Conditioners and Heat Pumps Using R-410A Refrigerant.
Metering Device
UNIT SIZE-SERIES OUTDOOR PISTON INDOOR TXV* REQUIRED SUBCOOLING
(°F)
024-30 46 KSATX0201HSZ 11
030-30 52 KSATX0201HSZ 9
036-30 57 KSATX0301HSZ 9
042-30 59 KSATX0301HSZ 11
048-30 61 KSATX0401HSZ 10
060-31 73 KSATX0501HSZ 12
* TXV must be installed when indoor coil is not equipped with an R-410A approved TXV. TXV listed is for any approved coil combination. All
TXVs are R-410A specific bi-flow hard shutoff.
2

Accessories
ORDERING NO. DESCRIPTION
KAATD0101TDR Time-Delay Relay—All Sizes
KSALA0301410 Low-Ambient Pressure Switch—All Sizes
KAAFT0101AAA Evaporator Freeze Thermostat—All Sizes
KHAIR0101AAA Isolation Relay—All Sizes
KSAHS1501AAA Start Assist—Capacitor and Relay—Sizes 024–042
KSAHS1601AAA Start Assist—Capacitor and Relay—Size 048, 060
KAACS0201PTC Start Assist—PTC—All Sizes
KAACH1201AAA Crankcase Heater—Sizes 024–042
Standard Crankcase Heater—Sizes 048, 060
KHAOT0301FST Outdoor Thermostat—All Sizes
KHAOT0201SEC Secondary Outdoor Thermostat—All Sizes
KHASA0101AAA Service Alarm—All Sizes
KHAIC0101AAA Interface Control (Optimizer II®)—All Sizes
KSATX0201HSZ Bi-Flow TXV (Hard Shutoff)—Sizes 024, 030
KSATX0301HSZ Bi-Flow TXV (Hard Shutoff)—Sizes 036, 042
KSATX0401HSZ Bi-Flow TXV (Hard Shutoff)—Size 048
KSATX0501HSZ Bi-Flow TXV (Hard Shutoff)—Size 060
KH45LG140 (RCD) Bi-Flow Filter Drier (Suction Line)—Sizes 024–036
KH45LG141 (RCD) Bi-Flow Filter Drier (Suction Line)—Sizes 042–060
KHALS0401LLS Liquid-Line Solenoid Valve—All Sizes
KSASF0101AAA Support Feet—4 In. (4)—All Sizes
KHASS0206MPK Snow Stand—18 In.—All Sizes
THERMOSTAT/SUBBASE PKG DESCRIPTION
TSTATCCNHP01-A Thermostat—Auto Changeover, Non-Programmable, °F/°C, 2-Stage Heat, 1-Stage Cool
TSTATCCPHP01-A Thermostat—Auto Changeover, 7-Day Programmable, °F/°C, 2-Stage Heat, 1-Stage Cool
TSTATCCPDF01-A Thermostat—Auto Changeover, 7-Day Programmable, °F/°C, Dual Fuel
Must be used with Outdoor Air Temperature Sensor (TSTATXXSEN01)
TSTATCCPRH01-A Thermidistat™ Control—Programmable Thermostat with Humidity Control
--HH--07AT-215 Thermostat—Manual Changeover, Non-Programmable, °F, 2-Stage Heat, 1-Stage Cool
TSTATXXSEN01 Outdoor Air Temperature Sensor
TSTATXXNBP01 Backplate for Non-Programmable Thermostat
TSTATXXPBP01 Backplate for Programmable Thermostat
TSTATXXCNV10 Thermostat Conversion Kit (4 to 5 Wire)—10 Pack
Accessory Usage Guideline
ACCESSORY REQUIRED FOR LOW-AMBIENT APPLICATIONS
(BELOW 55°F)
REQUIRED FOR LONG-LINE
APPLICATIONS*
(OVER 50 FT)
Crankcase Heater Yes Yes
Evaporator Freeze Thermostat Yes No
Compressor Start Assist—Capacitor and Relay Yes Yes
R-410A Low-Ambient Pressure Switch Yes No
Wind Baffle See Low-Ambient
Pressure Switch Instructions No
Support Feet Recommended No
R-410A Hard Shutoff TXV Yes† Yes†
R-410A Liquid-Line Solenoid Valve for Heating No See Long-Line
Application Guideline
* For tubing line sets between 50 and 175 ft, refer to the Application Guideline and Service Manual for Residential Split-System Air Conditioners and Heat Pumps using
R-410A Refrigerant.
† Required for all applications.
3

Electrical Data
UNIT
SIZE-SERIES V/PH OPER VOLTS* COMPRESSOR FAN FLA MCA
60°C
MIN
WIRE
SIZE†
75°C
MIN
WIRE
SIZE†
60°C
MAX
LENGTH
(FT)‡
75°C
MAX
LENGTH
(FT)‡
MAX FUSE**
OR
CKT BKR
AMPS
Max Min LRA RLA
024-30
208/230/1 253 187
61.0 15.1 0.8 19.7 14 14 39 37 30
030-30 72.5 14.7 1.1 19.5 14 14 39 37 30
036-30 83.0 15.4 1.1 20.4 12 12 60 57 30
042-30 104.0 21.1 1.1 27.5 10 10 71 68 40
048-30 109.0 20.5 1.4 27.0 10 10 74 70 40
060-31 158.0 27.6 1.4 35.9 8 8 86 82 60
* Permissible limits of the voltage range at which unit will operate satisfactorily. Operation outside these limits may result in unit failure.
† If other than uncoated (non-plated), 60° or 75°C (140° or 167°F) insulation, copper wire (solid wire for 10 AWG and smaller, stranded wire for larger than 10 AWG)
is used, consult applicable tables of the NEC (ANSI/NFPA 70).
If wire is applied at ambient greater than 30°C (86°F), consult Table 310-16 of the NEC (ANSI/NFPA 70). The ampacity of nonmetallic-sheathed cable (NM), trade name
ROMEX, shall be that of 60°C (140°F) conductors, per the NEC (ANSI/NFPA 70) Article 336-30.
‡ Length shown is as measured 1 way along the wire path between the unit and the service panel for a voltage drop not to exceed 2 percent.
** Time-delay fuse.
FLA—Full Load Amps
LRA—Locked Rotor Amps
MCA—Minimum Circuit Amp
RLA—Rated Load Amps
NOTE: 1. Control circuit is 24v on all units and requires external power source.
2. Copper wire must be used from service disconnect to unit.
3. All motors/compressors contain internal overload protection.
Tested Combination Ratings*
UNIT SIZE-
SERIES INDOOR UNIT
ARI STANDARD RATINGS†
Cooling Heating
TC
SEER
EER
High-Temp Low-Temp
HSPF
Factory-
Supplied
Enhance-
ment
Standard
Rating
Carrier
Gas
Furnace
or
Accessory
TDR‡
Accessory
TXV** TC COP TC COP
024-30 FX4ANF030 25,000 TDR & TXV 13.00 — — 11.50 25,000 3.30 16,600 2.30 8.00
030-30 FX4ANF030 29,000 TDR & TXV 13.00 — — 11.40 30,000 3.50 18,500 2.34 8.00
036-30 FX4ANF042 35,000 TDR & TXV 13.00 — — 11.30 35,000 3.35 21,600 2.34 7.70
042-30 FV4ANF003 40,500 TDR & TXV 13.10 — — 11.30 40,500 3.35 25,400 2.45 7.70
048-30 FV4ANF005 45,500 TDR & TXV 13.50 — — 12.00 47,500 3.50 28,300 2.50 8.50
060-31 FV4ANB006 58,500 TDR & TXV 13.20 — — 11.00 60,000 3.50 37,000 2.53 8.00
* Outdoor section/indoor section combination tested in accordance with DOE test procedure for heat pumps.
† Ratings are net values reflecting the effects of circulating fan heat. Supplemental electric heat is not included. Ratings are based on:
Cooling Standard: 80°F (27°C) db 67°F (19°C) wb indoor entering air temperature and 95°F (35°C) db air entering outdoor unit.
High-Temp Heating Standard: 70°F (21°C) db indoor entering air temperature and 47°F (8°C) db 43°F (6°C) wb air entering outdoor unit.
Low-Temp Heating Standard: 70°F (21°C) db indoor entering air temperature and 17°F (-9°C) db 15°F (-10°C) wb air entering outdoor unit.
‡ In most cases, only 1 method should be used to achieve TDR function. Using more than 1 method in a system may cause degradation in performance. Use either
the accessory Time-Delay Relay KAATD0101TDR or a furnace equipped with TDR. All Carrier furnaces are equipped with TDR except for the 58GFA.
** Based on computer simulation. TXV must be R-410A compatible and hard shutoff type.
COP—Coefficient of Performance
EER—Energy Efficiency Ratio
HSPF—Heating Seasonal Performance Factor
SEER—Seasonal Energy Efficiency Ratio
TC—Total Capacity (Btuh)
TDR—Time-Delay Relay
TXV—Thermostatic Expansion Valve
Sound Rating (dBA)
UNIT SIZE-SERIES SOUND RATING
024-30 70
030-30 72
036-30 74
042-30 73
048-30 76
060-31 76
4

2 1/2
"
1 9/16
"
AIR DISCHARGE
4 3/16
"
3/8IN.
DIA.
LIQUID LINE CONN
1 3/4
"
2 15/16
"
FIELD POWER SUPPLY CONN 7/8IN.
DIA HOLE WITH
11/8IN. DIA KNOCKOUT
AND 1 3/8IN. DIA KNOCKOUT

10 1/2
"
FG
A
FIELD CONTROL SUPPLY CONN 7/8IN.
DIA HOLE

AIR DISCHARGE
AIR DISCHARGE AIR IN
AIR IN
AIR IN
HDIA VAPOR LINE CONN
3/8IN. DIA TIEDOWN
KNOCKOUTS (2) PLACES IN BASEPAN B
1 1/4
"
M
ACCESS
PANEL
L
K
C
D
E
J
C
L
1.Allow 30 in.
clearance to service side of unit, 48 in. above unit, 6 in.
on one side, 12 in. on remaining side, and 24 in. between units for proper airflow. Minimum outdoor operating ambient in cooling mode is 55°F (unless low ambient control is used) max 125°F.2. Maximum outdoor operating ambient in heating mode is 66°F.3. Series designation is the 13th position of the unit model number.4. Center of gravity .5.
NOTES:
A96517
Dimensions (In.)
UNIT
SIZE SERIES UNIT DIMENSIONS MINIMUM MOUNTING
PAD DIMENSIONS
A B C D E F G H J K L M Support Feet Snow Stand
024 30 39-13/16 30 34-15/16 4 9-3/4 27-1/2 33-7/8 5/8 8-3/16 15-7/8 14-3/8 14-1/4 26 X 32 31 X 35 030 30 33-13/16 30 34-15/16 4 9-3/4 21-1/2 27-7/8 3/4 8-3/16 14 13-1/8 13-3/4 26 X 32 31 X 35 036 30 27-13/16 30 34-15/16 4 9-3/4 15-1/2 21-7/8 3/4 8-3/16 16-1/8 14-1/8 13-1/4 26 X 32 31 X 35 042 30 27-13/16 30 34-15/16 4 9-3/4 15-1/2 21-7/8 7/8 8-3/16 16-1/4 14 13-1/8 26 X 32 31 X 35 048 30 39-13/16 30 34-15/16 4 9-3/4 27-1/2 33-7/8 7/8 8-3/16 16-1/4 14-1/4 14-1/2 26 X 32 31 X 35 060 31 39-13/16 30 34-15/16 4 9-3/4 27-1/2 33-7/8 7/8 8-3/16 16 13-3/4 13-3/4 26 X 32 31 X 35
5

R-410A—QUICK REFERENCE GUIDE
•R-410A refrigerant operates at 50-70 percent higher pressures than R-22. Be sure that servicing equipment and replacement
components are designed to operate with R-410A.
•R-410A refrigerant cylinders are rose colored.
•R-410A refrigerant cylinders have a dip tube which allows liquid to flow out of cylinder in upright position.
•Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400.
•R-410A systems should be charged with liquid refrigerant. Use a commercial type metering device in the manifold hose.
•Manifold sets should be 800 psig high side and 250 psig low side with 550 psig low-side retard.
•Use hoses with 800 psig service pressure rating.
•Leak detectors should be designed to detect HFC refrigerant.
•R-410A, as with other HFCs, is only compatible with POE oils.
•Vacuum pumps will not remove moisture from oil.
•Do not use liquid-line filter driers with rated working pressures less than 600 psig.
•Do not install a suction-line filter drier in liquid line.
•POE oils absorb moisture rapidly. Do not expose oil to atmosphere.
•POE oils may cause damage to certain plastics and roofing materials.
•Wrap all filter driers and service valves with wet cloth when brazing.
•A liquid-line filter drier is required on every unit.
•Do not use an R-22 TXV.
•If indoor unit is equipped with an R-22 TXV, it must be changed to an R-410A TXV.
•Never open system to atmosphere while it is under a vacuum.
•When system must be opened for service, break vacuum with dry nitrogen prior to opening to atmosphere.
•Always replace filter drier after opening system for service.
•Do not vent R-410A into the atmosphere.
•Do not use capillary tube coils.
•Observe all warnings,cautions, and bold text.
6

MATCHED SYSTEM
AIR CLEANER
HEAT PUMP
COMFORT VENTILATOR
HUMIDIFIER



COMFORT ZONE II
CONTROL CENTER
FAN COIL
A97114
SYSTEM DESIGN SUMMARY
1. Intended for outdoor installation with free air inlet and outlet. Outdoor fan external static pressure available is less than 0.01-in. wc.
2. Minimum outdoor operating air temperature for cooling mode without low-ambient operation accessory is 55°F (12.8°C).
3. Maximum outdoor operating air temperature for cooling mode is 125°F (51.7°C)
4. Minimum outdoor operating air temperature for heating mode is -30°F (-34.4°C).
5. Maximum outdoor operating air temperature for heating mode is 66°F (18.9°C).
6. For reliable operation, unit should be level in all horizontal planes.
7. Maximum elevation of indoor coil above or below base of outdoor unit is: indoor coil above = 30 ft; indoor coil below = 30 ft. (See items
8 and 9 following.)
8. For interconnecting tubing lengths greater than 50 ft, consult the Residential Split-System Application Guideline and Service Manual for
Air Conditioners and Heat Pumps using R-410A Refrigerant.
9. If ANY refrigerant tubing is buried, provide a minimum 6-in. vertical rise to the valve connections at the unit. Refrigerant tubing lengths
up to 36 in. may be buried without further considerations. Buried refrigerant tubing lengths greater than 36 in. are not recommended.
10. Use only copper wire for electric connection at unit. Aluminum and clad aluminum are not acceptable for the type of connector provided.
11. Mixmatches of indoor coil capacity of more than 1 size larger than outdoor unit capacity (unless so specified) may result in inadequate
indoor comfort.
12. Do not apply capillary tube indoor coils to these units.
13. Factory-supplied filter drier must be installed.
7

A94328
SERVICE TRAINING
Packaged Service Training programs are an excellent way to increase your
knowledge of the equipment discussed in this manual, including:
 • Unit Familiarization • Maintenance
 • Installation Overview • Operating Sequence
A large selection of product, theory, and skills programs is available, using popular
video-based formats and materials. All include video and/or slides, plus companion
book.
Classroom Service Training plus "hands-on" the products in our labs can mean
increased confidence that really pays dividends in faster troubleshooting, fewer
callbacks. Course descriptions and schedules are in our catalog.
CALL FOR FREE CATALOG 1-800-962-9212
[ ] Packaged Service Training [ ] Classroom Service Training
Copyright 1997 CARRIER Corp. • 7310 W. Morris St. • Indianapolis, IN 46231 38yxa1pf
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. 523-854 Printed in U.S.A. Form 38YXA-1PF Pg 8 11-97 Replaces: New