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
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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
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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
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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
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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
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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
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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
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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
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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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