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 responsibility 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 enable 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 materials. 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 installed requires a design that in the event of refrigerant gas leaking out, its density will not exceed a
set limit.
The refrigerant (R410A), which is used in the airconditioner, is safe, without the toxicity or combustibil-
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 density 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 conditioner systems is on the increase because of the need
for effective use of floor space, individual control, energy conservation by curtailing heat and carrying power, etc. Most importantly, the multi air conditioner system 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 accidentally 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 refrigerant. For additional guidance and precautions related to
refrigerant safety, please refer to the following documents:
International Mechanical Code 2009 (IMC-2009) (or
more recently revised)
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
INTRODUCTION
FORM 121.00-EG1
ISSUE DATE: 5/31/2012
5
JOHNSON CONTROLS
Suitability. Johnson Controls Mini 2-way Variable Refrigerant Flow (VRF) system is ideal for commercial 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, productive 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 systems offer multiple configurations for both new and
existing buildings. Multi-zone temperature control allows the system to handle diverse heating and cooling
loads, while giving occupants the ability to adjust temperature to satisfy their individual comfort needs. In
addition, variable refrigerant flow heating and cooling
uses energy efficiently, because VRF uses only refrigerant 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 parameters.
Control.
Johnson Controls Mini 2-way VRF systems are available with a variety of zone controls and
network controls that are responsive and provide immediate response to changes in zone loads. With wired
controls, wireless controls and a network portal that
supports BACnet®, LONWORKS® and Johnson Controls N2 protocols, the Mini 2-way VRF system will
have the solution to meet the needs of the owners and
tenants.
JOHNSON CONTROLS Mini 2-WAY VARIABLE
FORM 121.00-EG1
ISSUE DATE: 5/31/2012
JOHNSON CONTROLS
6
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 technology, they offer immediate response to changes in zone
loads with the compressor precisely delivering the right
amount of refrigerant to each zone. VRF systems provide increased occupant comfort, with zone control, all
occupants enjoy consistent room temperature regardless 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 Controls Mini 2-way outdoor units come in 2 sizes, 3 ton
and 4.4 ton.
OUTDOOR UNITS
FORM 121.00-EG1
ISSUE DATE: 5/31/2012
7
JOHNSON CONTROLS
• Ultra-quiet operation as low as 22 dBA
• 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,wallandoormountedmodelsavailable
• Concealed, semi-concealed and exposed models
available
• All units can be controlled with any Johnson Controls 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
beconguredtousethesensorinthecontroller.
FEA TURES AND OPTIONS
FORM 121.00-EG1
ISSUE DATE: 5/31/2012
JOHNSON CONTROLS
8
• Flexible Piping Design:
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
• 656 Feet - Maximum Total Liquid Line
• 492 Feet - Maximum Outdoor To Most Dis-
tant Indoor Unit
• 164 Feet - Maximum Vertical Between Indoor and Outdoor (Outdoor Above Indoor)
• 131 Feet - Maximum Vertical Between Indoor 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’
abovetheoorand12”fromceiling
• Wireless remote ready – comes with built-in wire-
1 Consult us before introducing a salt-air damage resistant model as it requires a special treatment.
2 The specifications are subject to change without notice for development.
3 Contact us for the delivery schedule.
Hot-dip zinc-coated
steel sheet
SteelEpoxy coating + alkyd coating
Hot-dip zinc-coated
steel sheet
No treatment
No treatment
Polyester powder double coating
( 120 m)
Zinc rich double coating + urethane
coating ( 70 m)
Polyester powder double coating
(both sides) ( 80 m)
Defrost controlReverse cycle, microprocessor control
Service function
Sensor temp. recall function
Past service warnings recall function
Refrigerant amount at shipmentlbs. (kg)R410A - 7.7 (3.5)
Refrigerant controlElectronic expansion valve
Operation sound (Hi)
Power level
Pressure level51
dB-A
67
External finishGalvanized steel plate with powder paint
Color (Approximate value)Munsell code 1Y 8.5 /0.5
Refrigerant tubing
Limit of tubing lengthft. (m)492 (150)
Limit of elevation difference
between the 2 units
Refrigerant tube
diameter
Liquid tubein. (mm)3/8 (9.52)
Gas tubein. (mm)5/8 (15.88)
ft. (m)
Refrigerant tubing kit / Joint kitOptional
DIMENSIONS & WEIGHT
Heightin. (mm)48-7/16 (1230)
Unit dimensions
Net weightlbs. (kg)229 (104)
Shipping weightlbs. (kg)247 (112)
Shipping volumeft
Rated conditions
Cooling : Indoor air temperature 80°F DB / 67°F WB ; Outdoor air temperature 95°F DB
Heating : Indoor air temperature 70°F DB ; Outdoor air temperature 47°F DB / 43°F WB
* Full-load conditions at Indoor / Outdoor capacity ratio 100%
Cooling : Indoor air temperature 89°F DB / 73°F WB ; Outdoor air temperature 109°F DB / 78°F WB
1
*
Outdoor unit model name beginning with letters "JCHXR"
Refer to the Section 1 "Salt-Ait Damage Resistant Specications".
Widthin. (mm)37 (940)
Depthin. (mm)13-13/32 (340)
3 (m3
)19.8 (0.56)
Outdoor unit is higher than indoor unit : 164 (50)
Defrost controlReverse cycle, microprocessor control
Service function
Sensor temp. recall function
Past service warnings recall function
Refrigerant amount at shipmentlbs. (kg)R410A - 7.7 (3.5)
Refrigerant controlElectronic expansion valve
Operation sound (Hi)
Power level
Pressure level52
dB-A
68
External finishGalvanized steel plate with powder paint
Color (Approximate value)Munsell code 1Y 8.5 /0.5
Refrigerant tubing
Limit of tubing lengthft. (m)492 (150)
Limit of elevation difference
between the 2 units
Refrigerant tube
diameter
Liquid tubein. (mm)3/8 (9.52)
Gas tubein. (mm)3/4 (19.05)
ft. (m)
Refrigerant tubing kit / Joint kitOptional
DIMENSIONS & WEIGHT
Heightin. (mm)48-7/16 (1230)
Unit dimensions
Net weightlbs. (kg)229 (104)
Shipping weightlbs. (kg)247 (112)
Shipping volumeft
Widthin. (mm)37 (940)
Depthin. (mm)13-13/32 (340)
3 (m3
)19.8 (0.56)
Outdoor unit is higher than indoor unit : 164 (50)
Outdoor unit is lower than indoor unit : 131 (40)
Unit dimensions
Package dimensions
52-13/32 (1331)
40 (1016)
16-11/32 (415)
DATA SUBJECT TO CHANGE WITHOUT NOTICE
Rated conditions
Cooling : Indoor air temperature 80°F DB / 67°F WB ; Outdoor air temperature 95°F DB
Heating : Indoor air temperature 70°F DB ; Outdoor air temperature 47°F DB / 43°F WB
* Full-load conditions at Indoor / Outdoor capacity ratio 100%
Cooling : Indoor air temperature 89°F DB / 73°F WB ; Outdoor air temperature 109°F DB / 78°F WB
1
*
Outdoor unit model name beginning with letters "JCHXR"
Refer to the Section 1 "Salt-Ait Damage Resistant Specications".
1-2. Major Component Specications
FORM 121.00-EG1
ISSUE DATE: 5/31/2012
19
JOHNSON CONTROLS
Specifications
Unit Specifications (1)
Outdoor unit (A)
MODEL No.
POWER SOURCE
Controller P.C.B Assembly
Control circuit fuse250V, 5A
Compresser
TypeRotary (Hermetic)
Model ... Code No.C-9RVN273H0W ... 80867080
Motor rated outputkW2.1
Compressor Oil (ETHER FV68S)gal (cc)0.50 (1,900)
Coil resistance
(Ambient temperature 77°F)
Safety devices
Overload protector
(Operating temperature)
Microprocessor safety devices
Crank case heaterV, W230, 30
Open°F (°C)230 (110)
Close°F (°C)203 (95)
Compressor discharge gas temperature control
JCHX03652N, JCHXR03652N*
208 - 230 V / 1ø / 60 Hz
CR-CHX03652
INV (Inverter)
V - U: 0.169, U-W: 0.169,
W-V: 0.169
Compressor current detection circuit
High pressure switch
Set pressure ON / OFFin. WG456 / 551
Fan...(Number diameter / length in. (mm))
Propeller (1 ... ø18-7/64 (ø460)) ×2
Fan motor
Model No.DAJ12-95B61A, B-CR
SourceDC340V / 3 phase
No. of pole8
Nominal outputW90
Coil resistance
(Ambient temperature 68°F)
Safety device
Operating temperature
Run capacitorVAC, μF
Ω
Open°F (°C)284 (140)
Close°F (°C)
RED - WHT : 30.5 WHT - BLK : 30.5
BLK - RED : 30.5
–
–
Heat exchanger
CoilAluminum plate fin / Copper tube
Rows...fin pitchin. (mm)3 ... 7/128 (1.4)
Face areaft
* Outdoor unit model name beginning with letters “JCHXR”
Refer to the Section 1 “2. Salt-Air Damage Resistant Specications”.
2 (m2
)11.7 (1.08)
DATA SUBJECT TO CHANGE WITHOUT NOTICE
Outdoor unit (B)
FORM 121.00-EG1
ISSUE DATE: 5/31/2012
JOHNSON CONTROLS
20
Unit Specifications (2)
MODEL No.
POWER SOURCE
Controller P.C.B Assembly
Control circuit fuse250V, 5A
Compresser
TypeRotary (Hermetic)
Model ... Code No.C-9RVN273H0W ... 80867080
Motor rated outputkW4.0
Compressor Oil (ETHER FV68S)gal (cc)0.50 (1,900)
Coil resistance
(Ambient temperature 77°F)
Safety devices
Overload protector
(Operating temperature)
Microprocessor safety devices
Crank case heaterV, W230, 30
Open°F (°C)230 (110)
Close°F (°C)203 (95)
Compressor discharge gas temperature control
JCHX05252N, JCHXR05252N*
208 - 230 V / 1ø / 60 Hz
CR-CHX06052
INV (Inverter)
V - U: 0.169, U-W: 0.169,
W-V: 0.169
Compressor current detection circuit
High pressure switch
Set pressure ON / OFFin. WG456 / 551
Fan...(Number diameter / length in. (mm))
Propeller (1 ... ø18-7/64 (ø460)) ×2
Fan motor
Model No.DAJ12-95B61A, B-CR
SourceDC340V / 3 phase
No. of pole8
Nominal outputW90
Coil resistance
(Ambient temperature 68°F)
Ω
RED - WHT : 30.5 WHT - BLK : 30.5
BLK - RED : 30.5
Safety device
Operating temperature
Run capacitorVAC, μF
Open°F (°C)284 (140)
Close°F (°C)
–
–
Heat exchanger
CoilAluminum plate fin / Copper tube
Rows...fin pitchin. (mm)3 ... 7/128 (1.4)
Face areaft
2 (m2
)11.7 (1.08)
* Outdoor unit model name beginning with letters “JCHXR”
Refer to the Section 1 “2. Salt-Air Damage Resistant Specications”.
DATA SUBJECT TO CHANGE WITHOUT NOTICE
6-11/16
13-3/8
11-21/32
25/32
13/32
14-31/32
15-15/16
13/32
19/32
25-31/32
37
Air
discharge
8-5/8 5-29/32
1/21/2
1/21/2
2-
3/4
4-5/16
1
2
3
4
5
6
7
8
9
2-7/32
4-19/32
11-11/32
10-25/32
5/16
2-3/8
2-7/16
R1-3/16
R3/4
7
8
7
6
5
4
7
8
3-7/16
2-1/4
1-13/16
7
6
5
4
1-13/32
2-3/8
4-11/32
5-1/8
7-25/32
5-9/16
23-5/8
22-9/16
6-13/16
3-3/16
2-25/32
48-7/16
23/32
4-23/32
5-1/2
6-9/16
7-3/4
6-5/8
8-15/16
8-9/32
7-8/32
6-11/16
5-29/32
4-3/4
2-27/32
Air
intake
Air
discharge
7
8
2
3
9
3-29/32
25/32
6
5
2-3/8
7
4
Air intake
Installation anchoring hole (4-R6.5 or R1/4"), anchor bolt: M10 or 13/32''