OXBOX J4GXCxxxE Condensing Units Cooling and Heat Pump Compatible Installation Guide

INSTALLER’S GUIDE
Upflow/Downflow Cased Coils
Cooling and Heat Pump Compatible
Factory Installed R410a Metering Device

J4GXCxxxE Condensing Units Cooling and Heat Pump Compatible

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 proper installation, 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.
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 injury or death.
Installation or servicing of this unit can be hazardous due to parts, components and system pressure.
Qualified and proper 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 potential 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.

2.1 Unit Dimensions

DIMENSIONAL DATA

MODELS| UNIT HEIGHT
“H” IN. [mm]| UNIT WIDTH
“W” IN. [mm]| SUPPLY
DUCT “A”
IN. [mm]| “W1” IN. [mm]| LIQUID LINE/
VAPOR LINE| WEIGHT
(LBS.[kg])
---|---|---|---|---|---|---
J4GXCA003EC6HUA| 20″[508]| 14-1/2″[368]| 13″[330]| 13-1/2″[343]| 3/8″ / 3/4″| 42[19]
J4GXCB004EC6HUA| 20″[508]| 17-1/2″[445]| 16″[407]| 16-1/2″[419]| 3/8″ / 3/4″| 44[20]
J4GXCC005EC6HUA| 20″[508]| 21″[533]| 19-1/2″[495]| 20″[508]| 3/8″ / 3/4″| 46[21]
J4GXCB006EC6HUA| 26″[660]| 17-1/2″[445]| 16″[407]| 16-1/2″[419]| 3/8″ / 7/8″| 55[25]
J4GXCC007EC6HUA| 26″[660]| 21″[533]| 19-1/2″[495]| 20″[508]| 3/8″ / 7/8″| 57[26]
J4GXCD008EC6HUA| 26″[660]| 24-1/2″[622]| 23″[584]| 23-1/2″[597]| 3/8″ / 7/8″| 62[28]
J4GXCB016EC6HUA| 30″[762]| 17-1/2″[445]| 16″[407]| 16-1/2″[419]| 3/8″ / 7/8″| 66[30]
J4GXCC017EC6HUA| 30″[762]| 21″[533]| 19-1/2″[495]| 20″[508]| 3/8″ / 7/8″| 66[30]
J4GXCD018EC6HUA| 30″[762]| 24-1/2″[622]| 23″[584]| 23-1/2″[597]| 3/8″ / 7/8″| 71[32]
J4GXCC009EC6HUA| 30″[762]| 21″[533]| 19-1/2″[495]| 20″[508]| 3/8″ / 7/8″| 75[34]
J4GXCD010EC6HUA| 30″[762]| 24-1/2″[622]| 23″[584]| 23-1/2″[597]| 3/8″ / 7/8″| 79[36]

2.2 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 (EPA) 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.
2.3 Inspection Upon Unit Arrival
As soon as unit is recived, it should be inspected and noted for possible shipping damage during transportation. It is carrier’s responsibility to cover the cost of shipping damage. Manufacturer or distributor will not accept a claim from contractors for any transportation damage.
2.4 Clearances
Following clearances should be provided during installation
a. Maintenance and service access, including coil cleaning and coil assembly removal
b. Refrigerant piping and connections
c. Condensate drain line
Ensure the proper installation, Select a solid and level site.
Ensure enough space required for installation and maintenance.

INSTALLATION INSTRUCTIONS

3.1 Replacement Parts
Contact your distributor for authorized replacement parts.
3.2 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.

3.3 Installation And Trap Connection

1. See Fig. 3-1 for coil installation and drain connection.
2. Installation steps for cased coil:
   A. Shut off or disconnect gas furnace’s power and remove gas pipe if necessary;
   B. Disconnect and remove a sufficient portion of the supply ductwork to provide clearance for the cased coil.
   C. Ensure that the coil is leveled and seal the gap between coil and furnace.
   See Fig. 3-1. In case that coil and the 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;
   D. Reconnect the ductwork to the coil case, and seal any leakage;
   E. Reconnect Power line on gas furnace, turn on the

DRAIN APPLICATION

4.1 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 installer under the entire unit with a separate drain line. Manufacturer will not be responsible for any damages due to the failure to follow these recommendations.

4.2 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 type 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 drainage. 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). Use (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 wrench, 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 fictional characteristics and performance of the comfort coil.
Use brazing shield when brazing close to the cabinet surface and wet rag to protect rubber grommet.
Brazing alloy should be at least 5% silver content.

PISTON/TXV INSTALLATION

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

6.1 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.

6.2 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 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 use 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 superheat when using 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 outdoor unit. Addition piston sizes are provided in the ship-with literature bag as necessary.

Outdoor Unit
Capacity (Tons)| **Piston Size*
(R22)| Piston Kit**
---|---|---
1.5| 52| MAYORIACHP0052B
2| 58| MAYORIACHP0058B
2.5| 65| MAYORIACHP0065A
3| 72| MAYORIACHP0072B
3.5| 78| MAYORIACHP0078B
4| 88| MAYORIACHP0088B
5| 96| MAYORIACHP0096B

*Piston size needed for system combination may not be pre-installed.
See Table 6.1 for pre-installed size.

WARNING
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

Outdoor
temp(°F)| Indoor Temperature(°F) Dry Bulb/Wet Bulb|
---|---|---
95/79| 90/75| 85/71| 80/67| 75/63| 70/58
Superheat
115| 23| 16| 7| 5| 5| 5
110| 24| 17| 9| 5| 5| 5
105| 26| 19| 11| 5| 5| 5
100| 27| 21| 13| 7| 5| 5
95| 29| 23| 16| 9| 5| 5
90| 30| 25| 18| 12| 5| 5
85| 35| 26| 20| 14| 8| 5
80| 34| 28| 22| 17| 11| 5
75| 35| 30| 24| 19| 13| 6
70| 37| 32| 26| 21| 16| 10
65| 38| 34| 29| 24| 19| 13
60| 40| 36| 31| 27| 22| 17
55| 41| 37| 33| 29| 25| 21

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.
Airflow range is 375 to 425 CFM/Ton

AIR FLOW PERFORMANCE

Airflow performance [CFM VS Pressure drop]

Pressure drop characteristics for cooling and heat pump coils

Pressure drop (Inches of water)
Model| 0.05| 0.1| 0.15| 0.2| 0.25| 0.3| 0.35| 0.4*
J4GXCA003EC6HUA| 307| 485| 618| 729| 823| 911| 991| 1063
J4GXCB004EC6HUA| 327| 527| 682| 810| 925| 1024| 1122| 1217
J4GXCC005EC6HUA| 360| 585| 748| 893| 1019| 1132| 1238| 1348
J4GXCB006EC6HUA| 401| 600| 773| 916| 1045| 1160| 1256| 1357
J4GXCC007EC6HUA| 457| 663| 856| 1019| 1156| 1277| 1394| 1502
J4GXCD008EC6HUA| 496| 718| 924| 1102| 1259| 1398| 1530| 1651
J4GXCB016EC6HUA| 456| 638| 810| 953| 1077| 1191| 1284| 1390
J4GXCC017EC6HUA| 505| 726| 932| 1098| 1244| 1375| 1494| 1604
J4GXCD018EC6HUA| 533| 857| 1105| 1319| 1509| 1675| 1824| 1956
J4GXCC009EC6HUA| 439| 699| 906| 1071| 1224| 1362| 1487| 1589
J4GXCD010EC6HUA| 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.

Maximun 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| Downflow
J4GXCA003EC6HUA| 1200| 1050
J4GXCB004EC6HUA| 1250| 1050
J4GXCC005EC6HUA| 1250| 1050
J4GXCB006EC6HUA| 1575| 1400
J4GXCC007EC6HUA| 1575| 1400
J4GXCD008EC6HUA| 1575| 1450
J4GXCB016EC6HUA| 1800| 1700
J4GXCC017EC6HUA| 1800| 1700
J4GXCD018EC6HUA| 1800| 1700
J4GXCC009EC6HUA| 1850| 1750
J4GXCD010EC6HUA| 2000| 1850

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.
c . 2019 TwentyThreeC, LLC

References

• Salesforce B2B Commerce
• P65Warnings.ca.gov

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>