Johnson Controls JX Series User manual

MINI 2-WAY

VARIABLE REFRIGERANT FLOW (VRF) SYSTEM

MINI 2-WAY

VARIABLE REFRIGERANT FLOW (VRF) SYSTEM

ENGINEERING GUIDE New Release Form 121.00-EG1 (512)

Issue Date:

May 25, 2012

This equipment is a relatively complicated apparatus.

During installation, operation maintenance or service,

individuals may be exposed to certain components or

conditions including, but not limited to: refrigerants,

materials under pressure, rotating components, and

both high and low voltage. Each of these items has the

potential, if misused or handled improperly, to cause

bodily injury or death. It is the obligation and respon-

sibility of operating/service personnel to identify and

recognize these inherent hazards, protect themselves,

and proceed safely in completing their tasks. Failure

to comply with any of these requirements could result

in serious damage to the equipment and the property in

which it is situated, as well as severe personal injury or

death to themselves and people at the site.

This document is intended for use by owner-authorized

operating/service personnel. It is expected that these

individuals possess independent training that will en-

able them to perform their assigned tasks properly and

safely. It is essential that, prior to performing any task

on this equipment, this individual shall have read and

understood this document and any referenced mate-

rials. This individual shall also be familiar with and

comply with all applicable governmental standards and

regulations pertaining to the task in question.

CHECK OF DENSITY LIMIT

The room in which the air conditioner is to be in-

stalled requires a design that in the event of refrig-

erant gas leaking out, its density will not exceed a

set limit.

The refrigerant (R410A), which is used in the aircon-

ditioner, is safe, without the toxicity or combustibil-

IMPORTANT!

READ BEFORE PROCEEDING!

GENERAL SAFETY GUIDELINES

ity of ammonia, and is not restricted by laws imposed

to protect the ozone layer. However, since it contains

more than air, it poses the risk of suffocation if its den-

sity should rise excessively. Suffocation from leakage

of refrigerant is almost non-existent.

With the recent increase in the number of high density

buildings, however, the installation of multi air condi-

tioner systems is on the increase because of the need

for effective use of floor space, individual control, en-

ergy conservation by curtailing heat and carrying pow-

er, etc. Most importantly, the multi air conditioner sys-

tem is able to replenish a large amount of refrigerant

compared to conventional individual air conditioners.

If a single unit of the multi air conditioner system is

to be installed in a small room, select a suitable model

and installation procedure so that if the refrigerant ac-

cidentally leaks out, its density does not reach the limit

(and in the event of an emergency, measures can be

made before injury can occur).

ASHRAE and the International Mechanical Code of

the ICC as well as CSA provide guidance and define

safeguards related to the use of refrigerants, all of

which define a Refrigerant Concentration Level (RCL)

of 25 pounds per 1,000 cubic feet for R410A refriger-

ant. For additional guidance and precautions related to

refrigerant safety, please refer to the following docu-

ments:

International Mechanical Code 2009 (IMC-2009) (or

more recently revised)

ASHRAE 15

ASHRAE 34

FORM 121.00-EG1

ISSUE DATE: 5/31/2012

JOHNSON CONTROLS

INDOOR UNIT NOMENCLATURE

OUTDOOR UNIT NOMENCLATURE

J UMHX 12 62N

SERIES

CAPACITY

SLIM CONCEALED DUCT TYPE

JOHNSON CONTROLS

J CHX R 036 52N

SERIES

CAPACITY

2-WAY FLOW MINI

SALT-AIR DAMAGE RESISTANT

JOHNSON CONTROLS

OUTDOOR UNITS

KEY CLASS 36 52

JCHX Variable Refrigerant Flow

System JCHX03652N

JCHXR03652N* JCHX05252N

JCHXR05252N*

Refrigerant R410A is used in the outdoor units.

* Salt-Air Damage Resistant Specications.

INDOOR UNITS

KEY CLASS 7 9 12 15 18 24 36 48 54

JX 4-WayAir

Discharge

Semi-Con-

cealed

JXHX1252N JXHX1852N JXHX2452N JXHX3652N

JXM 4-WayAir

Discharge

Mini Semi-

Concealed

JXMHX1252N JXMHX1852N

JA 1-WayAir Dis-

charge Semi-

Concealed

JAHX0752N JAHX0952N JAHX1252N

JU Concealed

Duct Type JUHX0762N JUHX0962N JUHX1262N JUHX1562N JUHX1862N JUHX2462N JUHX3662N JUHX4862N JUHX5462N

JUM Slim Concealed

Duct Type JUMHX0762N JUMHX0962N JUMHX1262N JUMHX1562N JUMHX1862N

JD Concealed-

Duct High

Static Pressure

JDHX3652N JDHX4852N

JT Ceiling-

Mounted JTHX1252N JTHX1852N JTHX2452N

JK Wall-Mounted

Type JKHX0752N JKHX0952N JKHX1252N JKHX1862N JKHX2452N

JF Floor-Standing

Type JFHX0762N JFHX0962N JFHX1262N JFHX1562N JFHX1862N JFHX2462N

JFM Concealed-

Floor Standing

Type

JFMHX0762N JFMHX0962N JFMHX1262N JFMHX1562N JFMHX1862N JFMHX2462N

FORM 121.00-EG1

ISSUE DATE: 5/31/2012

JOHNSON CONTROLS

TABLE OF CONTENTS

INTRODUCTION.......................................................................................................................................................5

1. OFFERINGS........................................................................................................................................................14

2. OUTDOOR UNIT DIMENSIONS AND SPECIFICATIONS .................................................................................17

3. INDOOR UNIT DIMENSIONS AND SPECIFICATIONS .....................................................................................27

4-Way Air Discharge Ceiling Semi-Concealed, Standard And Mini (JX, JXM Type)......................................26

1-Way Air Discharge Ceiling Semi-Concealed (JAType)...............................................................................47

Slim Concealed Duct, Standard and Slim (JU, JUM Type) ............................................................................56

Concealed Duct High Static Pressure (JD Type)............................................................................................94

Ceiling Mounted Exposed Horizontal (JT Type)...........................................................................................101

Wall Mounted Exposed (JK Type)................................................................................................................ 111

Floor Exposed (JF Type)..............................................................................................................................124

Floor Concealed (JFM Type)........................................................................................................................139

4. FRESH AIR INTAKE, SEMI-CONCEALED DUCT AND CONCEALED DUCT TYPES...................................156

5. ELECTRICAL WIRING .....................................................................................................................................158

6. OUTDOOR UNIT WIRING DIAGRAMS............................................................................................................168

7. INDOOR UNIT WIRING DIAGRAMS................................................................................................................171

8. CAPACITY RATIO OF OUTDOOR UNITS .......................................................................................................196

9. COOLING CAPACITY OF INDOOR UNITS .....................................................................................................204

Note: 1. All data herein is subject to change without notice.

2. Drawings and performance data should not be used for submittal purposes

FORM 121.00-EG1

ISSUE DATE: 5/31/2012

JOHNSON CONTROLS

INTRODUCTION

Suitability. Johnson Controls Mini 2-way Vari-

able Refrigerant Flow (VRF) system is ideal for com-

mercial office buildings subject to diverse loads and

varying occupant levels. Also, the 2-way VRF system

is ideal for schools, hotels, nursing homes and other

commercial living spaces where occupants will want

to control the temperature setting in their zone. In all

cases the system runs quietly, for a comfortable, pro-

ductive environment.

Zone Control. In buildings with multiple zones that

require separate comfort controls, you need options.

Johnson Controls Mini 2-way (VRF) systems give you

the heating and cooling flexibility you need, combined

with the reliability and energy efficiency you expect

from Johnson Controls. You get the freedom to create

comfortable, efficient buildings, without being limited

by ductwork runs.

Flexibility. Johnson Controls Mini 2-way VRF sys-

tems offer multiple configurations for both new and

existing buildings. Multi-zone temperature control al-

lows the system to handle diverse heating and cooling

loads, while giving occupants the ability to adjust tem-

perature to satisfy their individual comfort needs. In

addition, variable refrigerant flow heating and cooling

uses energy efficiently, because VRF uses only refrig-

erant without air or water as a heat transfer medium.

Installation. Johnson Controls Mini 2-way VRF

systems are modular which are easy to transport and

install. As remodeling occurs and building extensions

are planned, the VRF systems modularity allows to

simply add on to the system within the system param-

eters.

Control. Johnson Controls Mini 2-way VRF sys-

tems are available with a variety of zone controls and

network controls that are responsive and provide im-

mediate response to changes in zone loads. With wired

controls, wireless controls and a network portal that

supports BACnet®, LONWORKS®and Johnson Con-

trols N2 protocols, the Mini 2-way VRF system will

have the solution to meet the needs of the owners and

tenants.

FORM 121.00-EG1

ISSUE DATE: 5/31/2012

JOHNSON CONTROLS

JOHNSON CONTROLS Mini 2-WAY VARIABLE

REFRIGERANT FLOW SYSTEM BENEFITS

Johnson Controls Mini 2-way Variable Refrigerant

Flow (VRF) systems are easy to select with flexibility

built in to the unit choices. With responsive controls

and advanced inverter controlled compressor technol-

ogy, they offer immediate response to changes in zone

loads with the compressor precisely delivering the right

amount of refrigerant to each zone. VRF systems pro-

vide increased occupant comfort, with zone control, all

occupants enjoy consistent room temperature regard-

less of variations in load during the day. VRF systems

provide efficient operation resulting in high COP’s, in

excess of 4.0 at full load conditions.

Johnson Controls Mini 2-way VRF systems outdoor

units have a modular design and compact footprint,

choosing a Johnson Controls VRF system means easy

installation and commissioning. With multiple unit

connectivity, up to 9 indoor units can be connected to

one condensing unit and the system takes advantage

of building load diversity. Diversity ratios of 50% to

130% allow for a smaller outdoor unit. Johnson Con-

trols Mini 2-way outdoor units come in 2 sizes, 3 ton

and 4.4 ton.

FORM 121.00-EG1

ISSUE DATE: 5/31/2012

JOHNSON CONTROLS

OUTDOOR UNITS

• Range from 3-4.4 tons

• 208/230 volt — single-phase power supply

• Modular design for increased capacity from com-

pact footprint

• Ultra quiet operation as low as 51d (dBA)

• Maximum piping lengths up to 984 feet

• Up to 9 indoor units can be connected

INDOOR UNITS

• Range from 7,500-48,000 btu

• 208/230 volt — single-phase power supply

• Ceiling,wallandoormountedmodelsavailable

• Concealed, semi-concealed and exposed models

available

• Ultra-quiet operation as low as 22 dBA

• All units can be controlled with any Johnson Con-

trols VRF zone controller.

CONTROLS

• Variety of controls available, all provide control

of mode, temperature, on/off and fan speed

• Remote unit controls

• Optional wireless remote controls

• Optional system diagnostics capability

• Network controls available

• Network portal that supports BACnet®, LON-

WORKS®and Johnson Controls N2 protocols.

• Standard operation uses return air sensor, but can

beconguredtousethesensorinthecontroller.

FORM 121.00-EG1

ISSUE DATE: 5/31/2012

JOHNSON CONTROLS

FEATURES AND OPTIONS

Outdoor Unit Features and Options:

• Range from 3-4.4 tons

• 208/230V, Single Phase, 60Hz

• Environmentally responsible R-410A refrigerant

• Ultra quiet operation as low as 51dBA

• Modular design for easy installation and compact

footprint

• Up to 9 indoor units can be connected

• Wide Operating Range (Outdoor Ambient)

• Cooling 14 °F to 109 °F

• Heating -4 °F to 59 °F

• Flexible Piping Design:

• 656 Feet - Maximum Total Liquid Line

• 492 Feet - Maximum Outdoor To Most Dis-

tant Indoor Unit

• 164 Feet - Maximum Vertical Between In-

door and Outdoor (Outdoor Above Indoor)

• 131 Feet - Maximum Vertical Between In-

door and Outdoor (Outdoor Below Indoor)

Indoor Unit Features and Options:

High Wall Mounted (JKHX Type)

• Lowest indoor unit cost per Btuh of cooling

• Surface mounts on walls

• Bottom discharge – should be mounted at least 5’

abovetheoorand12”fromceiling

• Wireless remote ready – comes with built-in wire-

less receiver

• Anti-moldwashablelter(notMERVrated)

• 3-speed AC motor (not ECM)

• Condensate pump not included

LD16391

JKHX Series - High Wall Mounted Indoor Unit

FORM 121.00-EG1

ISSUE DATE: 5/31/2012

JOHNSON CONTROLS

Ceiling Mounted Horizontal Exposed

(JTHX Type)

• Low prole (8.5” tall) – great for commercial

spaces

• Mounts against ceiling with horizontal discharge

• Bottomreturn–canbemountedushwithwall

• Anti-moldwashablelter(notMERVrated)

• 3-speed DC motor (ECM)

• Condensate pump not included

LD16392

JTHX Ceiling Mounted - Horizontal Exposed

1 Way Air Discharge Semi-Concealed

Cassette (JAHX Type)

• Only13”tall–tsintightceilingplenums

• Anti-moldwashablelter(notMERVrated)

• 3-speed DC motor (ECM)

• Condensate pump built in

LD16393

JAHX 1 Way Air Discharge - Semi-Concealed Cassette

4 Way Air Discharge Semi-Concealed

Cassette (JXHX and JXMHX Type)

• Great for large spaces

• 1and1.5tonunitstinthespaceofa2’X2’ceil-

ing(JXMHXType)

• 1, 1.5, 2 and 3 ton units available in 30" x 30" unit

size(JXHXType)

• Individual louvers can be disabled for use in cor-

ners

• Anti-moldwashablelter(notMERVrated)

• 3-speed DC motor (ECM)

• Condensatepumpwith25”liftbuiltin

LD16395

JXHX 4-Way Air Discharge - Semi-Concealed Cassette

Vertical Floor Mounted, Exposed (JFHX Type)

• Good choice for renovations where replacing

heating only radiators

• Airdischargedirectioniseasilycongured

• Front panel removes without tools for easy servic-

ing

• Anti-moldwashablelter(notMERVrated)

• Pipes can be connected to either side of the unit

from the bottom or rear

• Wired controller can be mounted in the unit.

• Condensate pump not included

LD16394

JFHX - Vertical Floor-Mounted

Exposed

FORM 121.00-EG1

ISSUE DATE: 5/31/2012

JOHNSON CONTROLS

Vertical Floor Mounted, Concealed

(JFMHX Type)

• SameastheJFHXExposed,butwithoutcasing

• Low external static – discharge grille should be

attached to the unit discharge with very little or

no ducting

• Front panel removes without tools for easy servic-

ing

• Anti-moldwashablelter(notMERVrated)

• Pipes can be connected to either side of the unit

from the bottom or rear

• Condensate pump not included

Horizontal Concealed (JUHX Type)

• High external static pressure up to 0.48” allows

enhancedltrationorlongerductruns

• Industry-leading low sound levels from 22 dBA

• Condensate pump built in

• Easy to install and maintain

• 3 speed AC motor (not ECM)

• Standardround8”takeoffscaneasilyberemoved

if a rectangular plenum is desired

LD16397

JFMHX - Vertical Floor-Mounted

Concealed

Horizontal Concealed Slim (JUMHX Type)

• Ultra-slimprole:7.9incheshighforallmodels

• DC fan motor greatly reduces power consumption

(ECM)

• Ideal for any application with short plenums

• Anti-mold washable lters included, but use of

lterreturngrilleissuggested

• Easy maintenance and service by external electri-

cal box

• 0.16 in. w.g. static pressure enables ductwork to

betted

• Condensate pump built in

LD16398

JUMHX - Horizontal Concealed Slim

High Static Concealed Horizontal

(JDHX Type)

• High external static pressure up to 0.70” allows

enhancedltrationorlongerductruns

• Can be used as 1:1 split system if required. Great

for large zones

• 3 speed AC motor (not ECM)

• Condensate pump not included

• This unit has a draw-through coil – a P-trap will

be required for the condensate

LD16399

JUHX - Horizontal Concealed

LD16400

JDHX - High-Static Horizontal Concealed

FORM 121.00-EG1

ISSUE DATE: 5/31/2012

JOHNSON CONTROLS

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