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INSTALLATION INSTRUCTIONS
RECOGNIZE THIS SYMBOL AS AN INDICATION OF IMPORTANT SAFETY INFORMATION
WARNING
These instructions are intended as an aid to qualified
licensed
service
adjustment and operation of this unit. Read these
instructions thoroughly before attempting installation or
operation. Failure to follow these instructions may result in
improper installation, adjustment, service or maintenance
possibly resulting in fire, electrical shock, property
damage, personal injury or death.
Please read carefully and keep in a safe place for future reference by a serviceman.
13 SEER
Split System Air Conditioner
1.5-5 Tons J4AC3 Series
R410A
NOTE: Appearance of unit may vary.
personnel
for
proper
DO NOT DESTROY THIS MANUAL
installation,
BX-SVN-J4AC3-1A-EN
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Related Manuals for Trane OXBOX J4AC3 Series
Summary of Contents for Trane OXBOX J4AC3 Series
- Page 1 INSTALLATION INSTRUCTIONS 13 SEER Split System Air Conditioner 1.5-5 Tons J4AC3 Series R410A NOTE: Appearance of unit may vary. RECOGNIZE THIS SYMBOL AS AN INDICATION OF IMPORTANT SAFETY INFORMATION WARNING These instructions are intended as an aid to qualified licensed service personnel proper...
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Page 2: Table Of Contents
TABLE OF CONTENTS 1.0 SAFETY........................3 1.1 INSPECTION....................4 1.2 LIMITATIONS....................4 2.0 GENERAL......................4 3.0 UNIT INSTALLATION....................6 3.1 LOCATION.......................6 3.2 GROUND INSTALLATION................6 3.3 ROOF INSTALLATION..................6 3.4 UNIT PLACEMENT..................6 3.5 UNIT MOUNTING....................7 3.6 FACTORY-PREFERRED TIE-DOWN METHOD..........8 3.7 PRECAUTIONS DURING LINE INSTALLATION..........9 3.8 PRECAUTIONS DURING BRAZING OF LINES..........10 3.9 PRECAUTIONS DURING BRAZING SERVICE VALVE.........10 4.0 INTERCONNECTING TUBING................12 4.1 SUCTION AND LIQUID LINES ..............12... -
Page 3: Safety
This document is customer property and is to remain with this unit. These instructions do not cover all the different variations of systems nor does it provide for every possible contingency to be met in connection with installation. All phases of this installation must comply with NATIONAL, STATE, AND LOCAL CODES. -
Page 4: Inspection
1.1 INSPECTION As soon as a unit is received, it should be inspected for possible damage during transit. If damage is evident, the extent of the damage should be noted on the carrier's delivery receipt. A separate request for inspection by the carrier's agent should be made in writing. -
Page 5: Dimensional Data
AIR DISCHARGE: AIR INLETS SERVICE ACCESS NOTE: DIMENSIONAL DATA Refrigerant Connection Dimensions (Inches) Service Valve Size MODEL SIZE Suction in. Liquid in. "H" in. [mm] "W" in. [mm] "L" in. [mm] 24-15/16[633] 21-7/8[554] 21-7/8[554] 24-15/16[633] 21-7/8[554] 21-7/8[554] 24-15/16[633] 29-1/8[740] 29-1/8[740] 24-15/16[633] 23-5/8[600] 23-5/8[600]... -
Page 6: Unit Installation
3.0 UNIT INSTALLATION 3.1 LOCATION Before starting the installation, select and check the suitability of the location for both the indoor and outdoor unit. Observe all limitations and clearance requirements. The outdoor unit must have sufficient clearance for air entrance to the condenser coil, for air discharge and for service access. -
Page 7: Unit Mounting
The outdoor unit must be connected to the indoor coil using field supplied refrigerant grade copper tubing that is internally clean and dry. Units should be installed only with the tubing sizes for approved system combinations. The refrigerant charge shown in the nameplate is for standard size interconnecting liquid line lengths up to 15 feet. -
Page 8: Factory-Preferred Tie-Down Method
3.6 FACTORY-PREFERRED TIE-DOWN METHOD Step 1: Prior to installing clear pad of debris. IMPORTANT The pad must meet local codes and must be the proper thickness to accommodate fasteners. Step 2: Center and level unit onto pad. Step 3: Using field supplied L-shaped bracket to locate holes on concrete and drill pilot holes which is at least 1/4”... -
Page 9: Precautions During Line Installation
3.7 PRECAUTIONS DURING LINE INSTALLATION 1. Install the lines with as few bends as possible. Care must be taken not to damage the couplings or kink the tubing. Use clean hard drawn copper tubing where no appreciable amount of bending around obstruction is necessary, if soft copper must be used, care must be taken to avoid sharp bends which may cause a restriction. -
Page 10: Precautions During Brazing Of Lines
WEATHERPROOF DISCONNECT POWER SWITCH SUPPLY INDOOR BLOWER COIL Seal opening(s) with permagum or equivalent NOTE:All outdoor wiring must be weather proof Fig.7 Typical Installation 3.8 PRECAUTIONS DURING BRAZING OF LINES All outdoor unit and evaporator coil connections are copper-to-copper and should be brazed with a phosphorous-copper alloy material such as Silfos-5 or equivalent. - Page 11 Connect the refrigerant lines using the following procedure: 1. Remove the cap and Schrader core from both the liquid and suction service valve service ports at the outdoor unit. Connect Iow pressure nitrogen to the liquid line service port. service valve wet rag Fig.8 Heat Protection 2.
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Page 12: Interconnecting Tubing
10. Replace cap on service ports. Do not remove the flare caps from the service ports except when necessary for servicing the system. 11. Release the refrigerant charge into the system. Open both the liquid and suction valves by removing the plunger cap and with an hex wrench back out counter -clockwise until valve stem just touches the chamfered retaining wall. -
Page 13: Line Sizing
LINE SIZING TABLE 2: SUCTION LINE LENGTH/SIZE VS CAPACITY MULTIPLIER(R410A) 1 1/2 Ton 2 Ton 2 1/2 Ton 3 Ton 3 1/2 Ton 4 Ton 5 Ton Model Size Suction Line Connection Size 3/4" O.D. 3/4" O.D. 3/4" O.D. 3/4" O.D. 3/4"... -
Page 14: Electrical Connections
6.0 ELECTRICAL CONNECTIONS 6.1 GENERAL INFORMATION & GROUNDING Check the electrical supply to be sure that it meets the values specified on the unit nameplate and wiring label. Power wiring, control (Iow voltage) wiring, disconnect switches and over current protection must be supplied by the installer. Wire size should be sized per requirements. -
Page 15: Removing The Top Panel And Motor
6.3 REMOVING THE TOP PANEL AND MOTOR 1/2” nut NOTE: 5/16” nuts Damage will occur to condenser unit if you remove fan nuts prior to cover removal. Fig.10 COVER AND FAN When motor requires changing follow the steps below: Step 1: Go into electrical panel, disconnect motor power lines. IMPORTANT NOTE Disconnect main power to unit. -
Page 16: Charging By Weight
5. Compare the measured LIQUID LINE PRESSURE to the TARGET LIQUID PRESSURE, add charge to raise the pressure or recover charge to lower it. 6. After running unit for 20 minutes if the SUCTION LINE PRESSURE changes, go back to step 2 otherwise remove test equipment and cover the valves. 7.2 CHARGING BY WEIGHT For a new installation,evacuation of interconnecting tubing and indoor coil is adequate;... -
Page 17: Control Wiring
9.1 CONTROL WIRING GROUND LINE VOLTAGE PLUG PLATE FACTORY STANDARD FIELD INSTALLED BLACK FACTORY OPTIONAL BLACK VOLTAGE BLACK FACTORY STANDARD FIELD INSTALLED FACTORY OPTIONAL USE COPPER CONDUCTORS ONLY BLACK COMPRESSOR CONTACTOR HPS OR HGS YELLOW COMP COMPRESSOR RC 1 RUN CAPACITOR 1 YELLOW RC 2 RUN CAPACITOR 2... - Page 18 Orifice/TXV Replacement Information NOTE: The orifice / TXV replacement options noted in this sheet supersede those in the installation guide. Please reference this sheet for all refrigerant metering options. DRILL A SMALL HOLE IN VAPOR LINE FOR EQUALIZER TUBE Step 1: Remove the screws and front coil BULB panel.
- Page 19 If Preinstalled Piston Condensing Unit Air Handle / A-Coil Piston Size Optional TXV SEER Replace Required J4AH4P18A1A00AA 0.050 4AYTXVH3G2436A J4AC3018B1000AA J4GXCA001AC6HUA 0.050 4AYTXVH3G2436A J4MXCA001AC6HCA 0.050 4AYTXVH3G2436A J4AH4P24A1B00AA 0.056 4AYTXVH3G2436A J4AC3024B1000AA J4GXCA001AC6HUA 0.058 4AYTXVH3G2436A J4MXCA001AC6HCA 0.058 4AYTXVH3G2436A J4AH4P30A1B00AA 0.063 4AYTXVH3G2436A J4AC3030B1000AA J4GXCA001AC6HUA 0.063 4AYTXVH3G2436A...
- Page 20 REFRIGERANT CHARGE FOR SYSTEM 13 SEER R410A AC Charge Chart 1.5 TON Outdoor Ambient Temperature( Cooling Mode Lipuid Pressure at Small Service Valve(psig) 13 SEER R410A AC Charge Chart 2.0 TON Outdoor Ambient Temperature( Cooling Mode Lipuid Pressure at Small Service Valve(psig) 13 SEER R410A AC Charge Chart 2.5 TON Outdoor Ambient Temperature( Cooling...
- Page 21 13 SEER R410A AC Charge Chart 3.5 TON Outdoor Ambient Temperature ( Cooling Mode Liquid Pressure at Small Service Valve(psig) 4 59 13 SEER R410A AC Charge Chart 4 TON Cooling Outdoor Ambient Temperature( Mode Liquid Pressure at Small Service Valve(psig) 13 SEER R410A AC Charge Chart 5 TON Cooling Outdoor Ambient Temperature(...
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Page 22: System Faults
TABLE 5. Troubleshooting SYSTEM FAULTS REFRIGERANT CIRCUIT Head Pressure Too High Head Pressure Too Low Suction Pressure Too High Suction Pressure Too Low Liquid Refrig. Floodback (TXV) I.D. Coil Frosting Compressor Runs Inadequate or No Cooling/Heating ELECTRICAL Compressor & O.D. Fan Won’t Start Compressor Will Not Start But O.D. - Page 24 16123000A19009 V.A...
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