OXBOX J4MXCA003EC6HCA 1.5 Ton Multi-Position Cased Coils Cooling Condensing Units Installation Guide

OXBOX J4MXCA003EC6HCA 1.5 Ton Multi-Position Cased Coils Cooling

Condensing Units

Thank you very much for purchasing our product, Before using your unit, please read this manual carefully and keep it for future reference. The figure shown in this manual is for reference only and may be slightly different from the actual product. RECOGNIZE THIS SYMBOL AS AN INDICATION OF IMPORTANT SAFETY INFORMATION

WARNING
These instructions are intended as an aid to qualified licensed service personnel for the proper installation, adjustment, and operation of this unit. Read these instructions thoroughly before attempting installation or operation. Failure to
Following these instructions may result in improper installation, adjustment, service or maintenance possibly resulting in fire, electrical shock, property damage, personal injury or death.

WARNING
This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance.

WARNING
Proposition 65: This appliance contains fiberglass insulation. Respirable particles of fiberglass are known to the state of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.”

SAFETY

WARNING
Disconnect all power to the unit before starting any service and maintenance. Failure to do so could cause severe electrical shock resulting in personal injure or death. Installation or servicing of this unit can be hazardous due to parts, components and system pressure. Qualified and properly trained service personnel should perform installation and repair. Failure to do so could cause severe electrical shock resulting in personal injury or death. This is a safety alert symbol indicating a potentially hazardous situation, which could result in personal injury, property and/or product damage or death.

CAUTION
This is a safety alert symbol indicating a potential hazardous situation, which could result in moderate personal injury, and/or property and product damage.

GENERAL

The coil can be positioned for bottom return air in the upflow and horizontal right applications. It must be positioned for top return when in downflow and horizontal left applications. See figure 2-1. For furnace applications, the coil must be installed downstream (in the air outlet) of the furnace

NOTE
This coil comes with a factory-installed heat shield on the drain pan

Unit Dimensions

DIMENSIONAL DATA

MODELS

| Unit Dimensions|

WEIGHT (LBS.[kg])

---|---|---
UNIT HEIGHT “H” IN. [mm]| UNIT WIDTH “W” IN. [mm]| SUPPLY DUCT “A” IN. [mm]|

“W1” IN. [mm]

| LIQUID LINE/ VAPOR LINE
J4MXCA003EC6HCA| 20″[508]| 14-1/2″[368]| 13″[330]| 13-1/2″[343]| 3/8″ / 3/4″| 46[21]
J4MXCB004EC6HCA| 20″[508]| 17-1/2″[445]| 16″[407]| 16-1/2″[419]| 3/8″ / 3/4″| 49[22]
J4MXCC005EC6HCA| 20″[508]| 21″[533]| 19-1/2″[495]| 20″[508]| 3/8″ / 3/4″| 51[23]
J4MXCB006EC6HCA| 26″[660]| 17-1/2″[445]| 16″[407]| 16-1/2″[419]| 3/8″ / 7/8″| 60[27]
J4MXCC007EC6HCA| 26″[660]| 21″[533]| 19-1/2″[495]| 20″[508]| 3/8″ / 7/8″| 62[28]
J4MXCD008EC6HCA| 26″[660]| 24-1/2″[622]| 23″[584]| 23-1/2″[597]| 3/8″ / 7/8″| 66[30]
J4MXCB016EC6HCA| 30″[762]| 17-1/2″[445]| 16″[407]| 16-1/2″[419]| 3/8″ / 7/8″| 73[33]
J4MXCC017EC6HCA| 30″[762]| 21″[533]| 19-1/2″[495]| 20″[508]| 3/8″ / 7/8″| 73[33]
J4MXCD018EC6HCA| 30″[762]| 24-1/2″[622]| 23″[584]| 23-1/2″[597]| 3/8″ / 7/8″| 77[35]
J4MXCC009EC6HCA| 30″[762]| 21″[533]| 19-1/2″[495]| 20″[508]| 3/8″ / 7/8″| 82[37]
J4MXCD010EC6HCA| 30″[762]| 24-1/2″[622]| 23″[584]| 23-1/2″[597]| 3/8″ / 7/8″| 86[39]

Codes & Regulations
This product is designed and manufactured to comply with national codes. Installation in accordance with such codes and/or prevailing local codes/regulations is the responsibility of the installer. The manufacturer assumes no responsibility for equipment installed in violation of any codes or regulations. The United States Environmental Protection Agency(E-PA) has issued various regulations regarding the introduction and disposal of refrigerants. Failure to follow these regulations may harm the environment and can lead to the imposition of substantial fines. Should you have any questions please contact the local office of the EPA.

Inspection Upon Unit Arrival
As soon as unit is received, it should be inspected and noted for possible shipping damage during transportation. It is the carrier’s responsibility to cover the cost of shipping damage. Manufacturers or distributors will not accept a claim from contractors for any transportation damage.

Clearance
Following clearances should be provided during the installation

• Maintenance and service access, including coil cleaning and coil assembly removal
• Refrigerant piping and connections
• Condensate drain line

Ensure the proper installation, Select a solid and level site. Ensure enough space is required for installation and maintenance.

INSTALLATION INSTRUCTIONS

Replacement Parts
Contact your distributor for authorized replacement parts.

Pre-installation Instruction
Carefully read all instructions for installation prior to installing the product. Make sure each step or procedure is understood and any special considerations are taken into account before starting installation. Assemble all tools, hardware, and supplies needed to complete the installation. Some items may need to be purchased locally. Make sure everything needed to install the product is on hand before starting.

Installation And Trap Connection

1. See Fig. 3-1 for coil installation and drain connection.
2. Installation steps for cased coil:
   • Shut off or disconnect gas furnace’s power and remove gas pipe if necessary;
   • Disconnect and remove a sufficient portion of the supply ductwork to provide clearance for the cased coil.
   • Ensure that the coil is leveled well and seal the gap between coil and the furnace.
   • See Fig. 3-1. In case that coil and furnace sizes are not matched, use proper size of sheet metal or other material to fill the gap and seal the gap to prevent air leak;
   • Reconnect the ductwork to the coil case, and seal any leakage;
   • Reconnect Power line on gas furnace, turn on the furnace to check any sign of leakage.
3. If the coil is used in connection with an upflow furnace in a horizontal left orientation, a sheet metal transition can be installed between the furnace supply air outlet and the evaporator coil supply air inlet to create clearance between coil lines and furnace flue outlet for A-cabinet non-condensing furnaces and for all cabinet size condensing furnaces. See Fig. 3-2 For A-cabinet non-condensing furnaces, a 6″ transition is needed. For all cabinet-size condensing furnaces, a 6.5″ transition is needed. If space is a constraint, the lines/flue interference can be removed by rotating the coil such that the lineset is facing the opposite direction and airflow through the bottom of the A-coil, thus optimizing airflow.

NOTE
Transition not needed with S-Series furnaces.

DRAIN APPLICATION

Condensate Drain Piping Consult local codes for special requirements. To provide extra protection from water damage, it is always recommended to install an additional drain pan, provided by the installer under the entire unit with a separate drain line. The manufacturer will not be responsible for any damages due to the failure to follow these recommendations.

Plastic Drain Pan Installation
WARNING
Do not use the coil pan shipped with the unit on OIL furnaces or any application where the temperature of the drain pan may exceed 275°F. A field- fabricated metal drain pan can also be used for these types of applications. Failure to follow this warning may result in property damage and/or personal injury

NOTE Use Teflon tape on the drain line connections. Do not use pipe joint compound or PVC/CPVC cement on drain nipple. The coil drain pan has a primary and an optional secondary drain with 3/4″ NPT female connections; use either
PVC or copper pipe and hand tighten to a torque of approximately 37 in-lbs. to prevent damage to the drain pan connection. An insertion depth between 0.355 to 0.485 inches (3-5 turns) should be expected at this torque setting.
Use male 3/4″ NPT threaded fitting for outside connection and make sure the drain holes are not blocked. Insulation may be needed for drain line to prevent sweating. Drain pan has two drain connections on each side to provide flexibility of connection and drianage. Make sure pan has proper pitch and plugged if second connection is not used. If the secondary drain line is required, run the line separately from the primary drain and terminate it where it can be easily seen.

NOTE Water coming from this line means the coil primary drain is plugged and needs clearing Install a trap in the drain line below the bottom of the drain pan. If using a copper drain line, solder a short piece of pipe to the connector before installing a drain fitting. DO NOT over torque the 3/4″ copper connector to the plastic drain connection. Use a wet rag or heatsink material on the short piece to protect plastic drain pan, complete the rag or heatsink material on the short piece to protect plastic drain pan, complete the drain line installion (Fig. 4-1). Ues (Fig. 4-2) as a template for typical drain pipe routing. This figure shows how to avoid interference with vent piping.

REFRIGERANT CONNECTIONS

CAUTION
Gently remove the sealing plug of vapor line, use one wrench to fix valve base, loose the nut with another wernch, take out the flange pad and sealing ring. To prevent refrigerant leak, use proper tools to ensure clean, burr-free cut.

CAUTION
TXV bulb MUST be protected (wrapped with wet rag) or removed, while brazing the tubing. Overheating of the sensing bulb will affect the functional characteristics and performance of the comfort coil.

CAUTION
TXV bulb MUST be protected (wrapped with wet rag) or removed, while brazing the tubing. Overheating of the sensing bulb will affect the functional characteristics and performance of the comfort coil.

NOTE A piston does come pre-installed. The piston must be removed before installing a TXV.

Piston Installation

1. Using a wrench to loosen the nut. Remove the nut and sealing flange.

2. Check the piston sizes for each outdoor/coil combination in Table 6-1 and choose the correct piston size for your combination.

3. If a different size piston is needed for your system combination, remove the pre-installed piston.
   NOTE Avoid pulling the piston sleeve out when removing the pre-installed piston.

4. Choose correct size piston from the doc pack and insert it with correct orientation.

5. Replace outer O-ring with the O-ring provided in the doc pack.

6. Attach the connection pipe with nut and tighten to 1/6th turn past hand-tighten.

NOTE MUST wrap the nut with a wet rag before brazing.This coil comes with a factory-installed piston metering device. See Table 6-1 for factory- installed piston size. Some system combinations will require a different-sized piston to be field installed.

• Use the piston size recommended by the outdoor unit if available.
• Reference Table 6-2 If the outdoor unit dose not list a piston size. * The ship-with literature bag will contain additional R-410A pistons for most applications.
• Contact your local parts center to order the appropriate piston if it is not included with the literature.

Optional TXV Kit Installation
Reference TXV kit literature for installation instructions.

1. Use a wrench to loosen the nut and remove the sealing flange and sealing gasket.
2. Take out the connecting pipe from the accessory package and braze the connecting pipe onto the refrigeration-out pipe.
3. Install the sealing washers, TXV and flange connection tube.
4. Use a wrench fasten nut and connecting pipe.(18±2N·m).
5. Connect TXV equalizer pipe to the port on the connecting pipe.
6. Fix bulbs on the connecting pipe using the accessory in TXV kit.

A TXV may be required to achieve minimum efficiency ratings or for long refrigerant line set applications. Reference AHRI for system combination ratings. Reference Table 6-2 to charge the system by superheating when using the piston. Reference the outdoor unit installation guide to charge the system when using a TXV. Table 6-1 Factory installed piston size for each coil model. Additional piston sizes are provided in the ship-with literature bag as necessary.

means that this piston is pre-installed
Table 6.2. Use chart below when matching coil with the outdoor unit. Addition piston sizes are provided in the ship-with literature bag as necessary.

Piston size needed for system combination may not be pre-installed. See Table 6.1 for the pre-installed size. Failure to install the proper piston can lead to poor system performance and possible compressor damage.

CAUTION
An improperly charged system will likely cause loss in system performance and may damage the compressor.

Table 6-3 Piston superheat charging chart

NOTE Chart is based on 400CFM/Ton indoor airflow and 50% relative humidity.If indoor relative humidity is above 70% or below 20%, use indoor wet bulb temperature only.
The airflow range is 375 to 425 CFM/Ton

7 AIR FLOW PERFORMANCE
Airflow performance [CFM VS Pressure drop]

Pressure drop charactertics for cooling and heat pump coils

Pressure drop (Inchs of water)
Model| 0.05| 0.1| 0.15| 0.2| 0.25| 0.3| 0.35| 0.4*
J4MXCA003EC6HCA| 307| 485| 618| 729| 823| 911| 991| 1063
J4MXCB004EC6HCA| 327| 527| 682| 810| 925| 1024| 1122| 1217
J4MXCC005EC6HCA| 360| 585| 748| 893| 1019| 1132| 1238| 1348
J4MXCB006EC6HCA| 401| 600| 773| 916| 1045| 1160| 1256| 1357
J4MXCC007EC6HCA| 457| 663| 856| 1019| 1156| 1277| 1394| 1502
J4MXCD008EC6HCA| 496| 718| 924| 1102| 1259| 1398| 1530| 1651
J4MXCB016EC6HCA| 456| 638| 810| 953| 1077| 1191| 1284| 1390
J4MXCC017EC6HCA| 505| 726| 932| 1098| 1244| 1375| 1494| 1604
J4MXCD018EC6HCA| 533| 857| 1105| 1319| 1509| 1675| 1824| 1956
J4MXCC009EC6HCA| 439| 699| 906| 1071| 1224| 1362| 1487| 1589
J4MXCD010EC6HCA| 466| 764| 978| 1157| 1313| 1466| 1590| 1695

Data based on wet coil with entering air at 80 degF DB / 67 degF WB without air filter. The maximum allowable pressure drop is 0.4 IWG. The maximum CFM is the data at 0.4 IWG pressure. Maximum airflow setting

NOTE
Water blow-off could occur in certain installation positions if the airflow setting exceeds the maximum values listed.

Maximun airflow seeting (CFM)

Model| Upflow| Horizontal Left| Downflow| Horizontal Right
J4MXCA003EC6HCA| 1200| 1050| 1050| 1200
J4MXCB004EC6HCA| 1250| 1200| 1050| 1250
J4MXCC005EC6HCA| 1250| 1200| 1050| 1250
J4MXCB006EC6HCA| 1575| 1400| 1400| 1575
J4MXCC007EC6HCA| 1575| 1400| 1400| 1575
J4MXCD008EC6HCA| 1575| 1450| 1450| 1575
J4MXCB016EC6HCA| 1800| 1800| 1700| 1500
J4MXCC017EC6HCA| 1800| 1800| 1700| 1700
J4MXCD018EC6HCA| 1800| 1800| 1700| 1700
J4MXCC009EC6HCA| 1850| 1750| 1750| 1850
J4MXCD010EC6HCA| 2000| 1850| 1850| 2000

TwentyThreeC, LLC
800 Beaty Street, Davidson,NC, 28036 www.oxboxhvac.com
For more information contact your local dealer (distributor) Since the manufacturer has a policy of continuous product and product data improvement, it reserves the right to change the design and specification without notice.

References

• Salesforce B2B Commerce
• P65Warnings.ca.gov

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