Trane Oxbox J4MXCA003EC6HCA Istruzioni per il montaggio

INSTALLER’S GUIDE

Multi-Position Cased Coils

Cooling and Heat Pump Compatible

Factory Installed R410a Metering Device

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.

CONTENTS

1SAFETY 01

Replacement Parts

Pre-installation Instruction

Installation And Trap Connection

3.1

3.2

3.3

3INSTALLATION INSTRUCTIONS

Condensate Drain Piping

Plastic Drain Pan Installation

4.1

4.2

4DRAIN APPLICATION

Piston Installation

Optional TXV Kit Installation

6.1

6.2

6PISTON/TXV INSTALLATION

5REFRIGERANT CONNECTIONS

7AIR FLOW PERFORMANCE

Unit Dimensions

Codes & Regulations

Inspection Upon Unit Arrival

Clearances

2.1

2.2

2.3

2.4

GENERAL

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.

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.”

WARNING

1 SAFETY

2 GENERAL

2.1 Unit Dimensions

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

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.

NOTE

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

Fig.2-1 CASED DIMENSIONS AND COMPONENT LOCATION

19"

21"

This is a safety alert symbol indicating a potential hazardous situation ,which could result in moderate personal injury,

and/or property and product damage.

CAUTION

2.2 Codes & Regulations

2.3 Inspection Upon Unit Arrival

Unit Dimensions

DIMENSIONAL DATA

J4MXCA003EC6HCA

J4MXCB004EC6HCA

J4MXCC005EC6HCA

J4MXCB006EC6HCA

J4MXCC007EC6HCA

J4MXCD008EC6HCA

J4MXCB016EC6HCA

J4MXCC017EC6HCA

J4MXCD018EC6HCA

J4MXCC009EC6HCA

J4MXCD010EC6HCA

20"[508]

26"[660]

30"[762]

14-1/2"[368]

17-1/2"[445]

21"[533]

17-1/2"[445]

21"[533]

24-1/2"[622]

17-1/2"[445]

21"[533]

24-1/2"[622]

21"[533]

24-1/2"[622]

13"[330]

16"[407]

19-1/2"[495]

16"[407]

19-1/2"[495]

23"[584]

16"[407]

19-1/2"[495]

23"[584]

19-1/2"[495]

23"[584]

13-1/2"[343]

16-1/2"[419]

20"[508]

16-1/2"[419]

20"[508]

23-1/2"[597]

16-1/2"[419]

20"[508]

23-1/2"[597]

20"[508]

23-1/2"[597]

3/8" / 3/4"

3/8" / 7/8"

46[21]

49[22]

51[23]

60[27]

62[28]

66[30]

73[33]

77[35]

82[37]

86[39]

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])

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 responsibili-

ty 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.

As soon as unit is recived, it should be inspected and

noted for possible shipping damage during transporta-

tion. 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 installa-

tion

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 mainte-

nance.

≥20"

Fig. 2-2 Front view of the indoor unit clearance

(including air duct)

Fig. 2-3 Top View of the indoor unit clearance (including

air duct)

≥24"

≥1"

≥0

≥1"

3.1 Replacement Parts

3.2 Pre-installation Instruction

3.3 Installation And Trap

Connection

3 INSTALLATION INSTRUCTIONS

Contact your distributor for authorized replacement

parts.

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.

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

Fig. 3-1 INSTALLATION OF CASED COIL

Fig. 3-2 Transition for horizontal left orientation

3. If the coil is used in connection with an upflow furnace in 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 lineset 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 air flow through the bottom of the A-coil, thus optimizing airflow.

NOTE

Transition not needed with S-Series furnaces.

4 DRAIN APPLICATION

4.1 Condensate Drain Piping

4.2 Plastic Drain Pan Installation

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 recommenda-

tions.

WARNING

Do not use the coil pan shipped with the unit on

oil furnaces or any application where the temper

-ature 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.

Use Teflon tape on the drain line connections. Do

not use pipe joint compound or PVC/CPVC

cement on drain nipple.

NOTE

Water coming from this line means the coil

primary drain is plugged and needs clearing.

NOTE

The coil drain pan has a primary and an optional second-

ary 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 connec-

tion and make sure the drain holes are not blocked.

Insulation may be needed for drain line to prevent sweat-

ing.

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.

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.

Fig. 4-1 DRAIN LINE INSTALLATION

Fig. 4-2 DRAIN PIPE ROUTING

5 REFRIGERANT CONNECTIONS

6 PISTON/TXV INSTALLATION

6.1 Piston Installation

A piston does come pre-installed. The piston

must be removed before installing a TXV.

NOTE

Avoid pulling the piston sleeve out when removing

the pre-installed piston.

NOTE

MUST wrap the nut with a wet rag before

brazing.

NOTE

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.

CAUTION

TXV bulb MUST be protected (wrapped with wet

rag) or removed, while brazing the tubing.

Overheating of the sensing bulb will affect the

fuctional characteristics and performance of the

comfort coil.

To prevent refrigerant leak, use proper tools to ensure

clean, burr-free cut.

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.

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

sealing flange.

2. Check the piston sizes for each outdoor/coil combina-

tion 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.

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. Fig 6-1

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.

6.2 Optional TXV Kit Installation

WARNING

Failure to install the proper piston can lead to

poor system performance and possible compres-

sor damage.

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 connec-

tion 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.

Fig 6-2

* 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.

Reference TXV kit literature for installation instructions.

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.

Table 6-3 Piston superheat charging chart

Piston/orifice sizes

J4MX

Model

CA003E

CB004E

CC005E

CB006E

CC007E

CD008E

CB016E

CC017E

CD018E

CC009E

CD010E

50 52

56 58

68 70

73 75

* means that this piston is pre-installed

CAUTION

An improperly charged system will likely cause

loss in system performance and may damage

the compressor.

Indoor Temperature(°F) Dry Bulb/Wet Bulb

Outdoor

temp(°F) 95/79 90/75 85/71 80/67 75/63 70/58

Superheat

115

110

105

100

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

NOTE

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*

(R410a) Piston Kit

1.5

2.5

3.5

MAYORIACHP0052B

MAYORIACHP0058B

MAYORIACHP0063B

MAYORIACHP0070B

MAYORIACHP0075B

MAYORIACHP0083B

MAYORIACHP0090B

Outdoor Unit

Capacity (Tons)

Piston Size*

(R22) Piston Kit

1.5

2.5

3.5

MAYORIACHP0052B

MAYORIACHP0058B

MAYORIACHP0065A

MAYORIACHP0072B

MAYORIACHP0078B

MAYORIACHP0088B

MAYORIACHP0096B

*Piston size needed for system combination may not be

pre-installed.

See Table 6.1 for pre-installed size.

7 AIR FLOW PERFORMANCE

Airflow performance [CFM VS Pressure drop]

Pressure drop characteristics for cooling and heat pump coils

Pressure drop (Inches of water)

Model

J4MXCA003EC6HCA

J4MXCB004EC6HCA

J4MXCC005EC6HCA

J4MXCB006EC6HCA

J4MXCC007EC6HCA

J4MXCD008EC6HCA

J4MXCB016EC6HCA

J4MXCC017EC6HCA

J4MXCD018EC6HCA

J4MXCC009EC6HCA

J4MXCD010EC6HCA

Model

J4MXCA003EC6HCA

J4MXCB004EC6HCA

J4MXCC005EC6HCA

J4MXCB006EC6HCA

J4MXCC007EC6HCA

J4MXCD008EC6HCA

J4MXCB016EC6HCA

J4MXCC017EC6HCA

J4MXCD018EC6HCA

J4MXCC009EC6HCA

J4MXCD010EC6HCA

Upflow

1200

1250

1575

1800

1850

2000

Horizontal Left

1050

1200

1400

1450

1800

1750

1850

Downflow

1050

1400

1450

1700

1750

1850

Horizontal Right

1200

1250

1575

1500

1700

1850

2000

0.05

307

327

360

401

457

496

456

505

533

439

466

0.1

485

527

585

600

663

718

638

726

857

699

764

0.15

618

682

748

773

856

924

810

932

1105

906

978

0.2

729

810

893

916

1019

1102

953

1098

1319

1071

1157

0.25

823

925

1019

1045

1156

1259

1077

1244

1509

1224

1313

0.3

911

1024

1132

1160

1277

1398

1191

1375

1675

1362

1466

0.35

991

1122

1238

1256

1394

1530

1284

1494

1824

1487

1590

0.4*

1063

1217

1348

1357

1502

1651

1390

1604

1956

1589

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)

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

TwentyThreeC, LLC

800 Beaty Street,

Davidson,NC, 28036

For more information contact

your local dealer (distributor)

www.oxboxhvac.com

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