38TXA 13.0 SEER
Air Conditioner With R-410A
Installation and Start-Up Instructions
NOTE: Read the entire instruction manual before starting the installation.
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 packaged 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 warnings or cautions attached to the unit. Consult local building codes and the National Electrical Code (NEC) for special installation requirements.
Recognize safety information. This is the safety-alert symbol
. When you see this symbol on the unit or in instructions and manuals, be alert to the potential for personal injury.
Understand the signal word DANGER, WARNING, or 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.
R-410A systems operate at higher pressures than standard R-22 systems. Do not use R-22 service equipment or components on R-410A equipment.
Before installing or servicing system, always turn off main power to system. There may be more than 1 disconnect switch. Turn off accessory heater power if applicable. Electrical shock can cause personal injury or death.
INSTALLATION
Specifications for this unit in residential new construction market require outdoor unit, indoor unit, refrigerant tubing sets, metering device, and filter drier listed in presale literature. There can be no deviation. Consult Application Guideline and Service Manual to obtain required unit changes for specific applications, and for R-22 retrofit.
Step 1ÐCheck Equipment and Jobsite
UNPACK UNIT Ð Move to final location. Remove carton taking care not to damage unit.
A92446
Fig. 1Ð38TXA
INSPECT EQUIPMENT Ð File claim with shipping company prior to installation if shipment is damaged or incomplete. Locate unit rating plate on unit corner panel. (See Fig. 4.) It contains information needed to properly install unit. Check rating plate to be sure unit matches job specifications.
Step 2ÐInstall on a Solid, Level Mounting Pad
If conditions or local codes require unit be attached to pad, tiedown bolts should be used and fastened through knockouts provided in unit base pan. Refer to unit mounting pattern in Fig. 4. to determine base pan size and knockout hole location.
When installing, allow sufficient space for airflow, wiring, refrigerant piping, and service. Allow 30-in. clearance to service end of unit and 48 in. above unit. For proper airflow, a 6-in. clearance on 1 side of unit and 12 in. on all remaining sides must be maintained. Maintain a distance of 24 in. between air conditioners. Position so snow, ice, and water from roof or eaves cannot fall directly on unit.
On rooftop applications, locate unit at least 6 in. above roof surface. Where possible, place unit above a load-bearing wall.
Arrange supporting members to adequately support unit and minimize transmission of vibration to building. Consult local codes governing rooftop applications.
Step 3ÐInstall TXV (Optional)
The accessory thermostatic expansion valve is specifically designed to operate with R-410A. Do not use an R-22 TXV. An
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book |
1 |
4 |
PC 101 |
Catalog No. 563-813 |
Printed in U.S.A. |
Form 38TXA-1SI |
Pg 1 |
1-96 |
Replaces: New |
Tab |
3a |
2a |
|
|
|
|
|
|
|
PISTON
RETAINER
PISTON
RING
PISTON
PISTON
BODY
FIELD
CONNECTION
STRAINER
FLARE
ADAPTOR
LIQUID LINE STRAINER
APPROX. 2” LONG 
STRAINER LABEL (AFFIX TO LIQ. LINE
NEAR STRAINER LOCATION)
A95615
Fig. 2ÐAccurater Components
existing R-22 TXV must be replaced with a factory-approved TXV specifically designed for R-410A. To replace an R-22 TXV see accessory kit instructions.
NOTE: FK4 fan coils are equipped with an R-22 TXV. If an FK4 fan coil is used with an R-410A air conditioner, the R-22 TXV must be replaced.
Step 4ÐInstall AccuRater® Piston and Ring
ACCURATER PISTON
1.If unit is to be installed with a piston metering device, check indoor piston to see if it matches required piston on outdoor unit rating plate. If it does not match, replace with piston shipped with outdoor unit. The piston shipped with outdoor unit is correct for any approved indoor coil combination.
2.After correct piston is installed, locate brass piston ring shipped in piston bag. Install piston ring behind metering piston as shown in Fig. 2. The piston ring will ensure piston stays seated during all operating conditions.
Step 5ÐMake Piping Connections
Do not leave system open to atmosphere any longer than minimum required for installation. POE oil in compressor is extremely susceptible to moisture absorption. Always keep ends of tubing sealed during installation.
Outdoor units may be connected to indoor sections using accessory tubing package or field-supplied refrigerant grade tubing of correct size and condition. For tubing requirements beyond 50 ft, consult Application Guideline and Service Manual for air conditioners with R-410A.
INSTALLATION RECOMMENDATIONS
1. Locate unit away from windows.
2.Ensure that vapor and liquid tube diameters are appropriate to capacity of unit. (See Table 1)
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 wall, seal 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 tubing. (See Fig. 3.)
NOTE: Avoid contact between tubing and structure
OUTDOOR WALL |
INDOOR WALL |
|
CAULK |
LIQUID TUBE |
|
|
||
|
VAPOR TUBE |
|
INSULATION |
|
|
THROUGH THE WALL |
||
|
JOIST |
|
HANGER STRAP |
|
|
(AROUND VAPOR |
INSULATION |
|
TUBE ONLY) |
||
|
||
|
VAPOR TUBE |
|
1² MIN.
LIQUID TUBE
SUSPENSION
A94028
Fig. 3ÐPiping Installation
8.Ensure that tubing insulation is pliable and completely surrounds vapor line.
9.When necessary, use hanger straps which are 1 in. wide and conform to shape of tubing insulation. (See Fig. 3.)
10.Isolate hanger straps from insulation by using metal sleeves bent to conform to shape of insulation.
DO NOT BURY MORE THAN 36 IN. OF REFRIGERANT TUBING IN GROUND. If any section of tubing is buried, there must be a 6-in. vertical rise to the valve connections on the outdoor unit. If more than the recommended length is buried, refrigerant may migrate to cooler buried section during extended periods of unit shutdown, causing refrigerant slugging and possible compressor damage at start-up.
2
AIR DISCHARGE |
AIR IN |
|
3/8" DIA TIEDOWN KNOCKOUTS |
|
(2) PLACES IN BASEPAN |
|
NOTES: |
AIR IN
C
L
|
|
|
|
|
|
|
|
|
|
1. |
Allow 30 in. (762 mm) clearance to service end of |
|
|
|
|
|
|
|
|
|
|
|
unit, 48 in. (1219 mm) above unit, 6 in. (152 mm) on one side, 12 in. (305 mm) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
on remaining side, and 24 in. (610 mm) between |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
D |
|
|
|
|
units for proper airflow. |
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
2. Minimum outdoor operating ambient in cooling mode is |
||||
|
|
|
|
|
|
|
|||||
|
|
|
|
|
|
|
|||||
|
|
|
|
|
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
55°F (12.8°C) (unless low ambient control is used) max 125°F (51.7°C). |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
E |
5. |
Series designation is the 13th position of the unit model number. |
|
|
|
|
|
|
|
|
|
6. |
Center of gravity |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
C 
AIR DISCHARGE |
AIR IN |
|
VAPOR LINE CONN
A
AIR DISCHARGE
UNIT RATING
PLATE
FIELD POWER SUPPLY CONN 7/8 IN. DIA HOLE WITH
1 1/8 IN. DIA KNOCKOUT
AND B 1 3/8 IN. DIA KNOCKOUT
FIELD CONTROL SUPPLY CONN
7/8 IN. DIA HOLE
ACCESS
PANEL
3/8 IN. DIA LIQUID LINE CONN
SERIAL |
|
|
|
|
PROD |
|
|
|
|
MODEL |
|
|
|
|
PISTON |
ID |
OD |
|
|
|
FACTORY CHARGED R-22 |
|||
|
|
LBS |
|
Kg |
POWER SUPPLY |
|
VOLTS |
||
|
|
PH |
|
HZ |
|
PERMISSIBLE VOLTAGE AT UNIT |
|||
|
|
MAX |
|
MIN |
|
SUITABLE FOR OUTDOOR USE |
|||
|
|
COMPRESSOR |
|
|
VOLTS AC |
|
|
|
|
PH |
|
|
|
|
HZ |
|
|
|
|
RLA |
|
|
|
|
LRA |
|
|
|
|
|
|
FAN MOTOR |
|
|
VOLTS AC |
|
|
|
|
PH |
|
|
|
|
HZ |
|
|
|
|
FLA |
|
|
|
|
|
DESIGN/TEST PRESSURE GAGE |
|||
HI |
PSI |
|
kPa |
|
LO |
PSI |
|
kPa |
|
MINIMUM CIRCUIT AMPS |
|
|||
MAX OVERCURRENT PROTECTIVE DEVICE |
||||
|
TYPE |
|
USA |
CANADA |
MAX FUSE |
|
|
|
|
MAX HACR CKT-BKR |
|
N/A |
||
MAX CKT-BKR |
N/A |
|
||
|
® |
|
|
|
|
|
® |
|
|
CARRIER CORP INDIANAPOLIS IN
313948-401 REV A |
46206 |
A92471
UNIT |
A |
B |
C |
D |
E |
SIZE |
In. |
In. |
In. |
In. |
In. |
|
|
|
|
|
|
024-060 |
34-15/16 |
30 |
8-3/16 |
4 |
9-3/4 |
|
|
|
|
|
|
Fig. 4ÐUnit Reference Drawing
In some cases noise in the living area has been traced to gas pulsations from improper installation of equipment.
OUTDOOR UNITS CONNECTED TO FACTORY-APPROVED INDOOR UNITS Ð Outdoor unit contains correct system refrigerant charge for operation with tested indoor unit listed in presale literature when connected by 15 ft of field-supplied or factory accessory tubing. Check refrigerant charge for maximum efficiency.
Table 1ÐRefrigerant Connections and Recommended Liquid and Vapor Tube Diameters (In.)
UNIT |
LIQUID |
VAPOR |
|||
Connect |
Tube |
Connect |
Tube |
||
SIZE |
|||||
Diameter |
Diameter |
Diameter |
Diameter |
||
|
|||||
024 |
3/8 |
3/8 |
5/8 |
5/8 |
|
030, 036 |
3/8 |
3/8 |
3/4 |
3/4 |
|
042, 048 |
3/8 |
3/8 |
7/8 |
7/8 |
|
060 |
3/8 |
3/8 |
7/8 |
1-1/8 |
|
|
|
|
|
|
|
Note: 1. Tube diameters are for lengths up to 50 ft. For tubing lengths greater than 50 ft, consult Application Guideline and Service Manual for air conditioners with R-410A.
Installation of filter drier in liquid line is required.
Step 6ÐInstall Liquid-Line Filter drier (See Fig. 5)
1.Braze 5-in. connector tube to liquid service valve. Wrap filter drier with damp cloth.
2.Braze filter drier between connector tube and liquid tube to indoor coil. Flow arrow must point towards indoor coil.
LIQUID-LINE
FILTER-DRIER
LIQUID |
|
|
|
SERVICE |
|
|
|
VALVE |
R |
-41 |
0A |
CONNECTOR
TUBE
A95509
Fig. 5ÐLiquid-Line Filter drier
3
Loading...