Johnson Controls Y Seroes, DHY24NWB21S, DHY09CSB21S, DHY12CSB21S, DHY18CSB21S Installation And Maintenance Manual
...
Installation
and
Maintenance
Manual
"Y" SERIES
INVERTER-DRIVEN AIR
CONDITIONING UNITS
Type
INDOOR UNITS
Type
OUTDOOR UNITS
Model
DHY09NWB21S
DHY12NWB21S
DHY18NWB21S
DHY24NWB21S
Model
DHY09CSB21S
DHY12CSB21S
DHY18CSB21S
DHY24CSB21S
,03257$17
PLEASE READ AND
UNDERSTAND THIS
MANUAL BEFORE USING
THIS INVERTER
AIR CONDITIONING UNIT.
KEEP THIS MANUAL FOR
FUTURE REFERENCE.
-DRIVEN
Important Notice
● Johnson Controls, Inc. pursues a policy of continuing improvement in design and performance in its
products. As such, Johnson Controls, Inc. reserves the right to make changes at any time without
prior notice.
● Johnson Controls, Inc. cannot anticipate every possible circumstance that might involve a potential hazard.
● This inverter air conditioning unit is designed for standard air conditioning applications only. Do not use
this unit for anything other than the purposes for which it was intended for.
● The installer and system specialist shall safeguard against leakage in accordance with local pipetter
and electrical codes. The following standards may be applicable, if local regulations are not available.
International Organization for Standardization: (ISO 5149 or European Standard, EN 378). No part of
this manual may be reproduced in any way without the expressed written consent of Johnson Controls,
Inc.
● This inverter-driven (cooling or heat pump) air conditioning unit will be operated and serviced in the
United States of America and comes with all required Safety, Danger, and Caution, warnings.
● If you have questions, please contact your distributor or dealer.
● This manual provides common descriptions, basic and advanced information to maintain and service
this inverter-driven (cooling or heat pump) air conditioning unit which you operate, as well for other
models.
● This inverter-driven (cooling or heat pump) air conditioning unit has been designed for a specic
temperature range. For optimum performance and long life, operate this unit within range limits.
● This manual should be considered as a permanent part of the air conditioning equipment and should
remain with the air conditioning equipment.
Product Inspection upon Arrival
1. Upon receiving this product, inspect it for any damages incurred in transit. Claims for damage, either
apparent or concealed, should be led immediately with the shipping company.
2. Check the model number, electrical characteristics (power supply, voltage, and frequency rating), and
any accessories to determine if they agree with the purchase order.
3. The standard utilization for this unit is explained in these instructions. Use of this equipment for
purposes other than what it designed for is not recommended.
4. Please contact your local agent or contractor as any issues involving installation, performance, or
maintenance arise. Liability does not cover defects originating from unauthorized modications
performed by a customer without the written consent of Johnson Controls, Inc. Performing any
mechanical alterations on this product without the consent of the manufacturer will render your
warranty null and void.
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P5415467
Table of contents
Table of Contents
Introduction and Safety Summary
1.
2. Installation
2.1 Installation Dimension Diagram ......................................................................................1
2.2 Main Tools for Installation and Maintenance .................................................................2
2.3 Installation Procedures.....................................................................................................3
Installation Checking Parts
2.4
2.5 Selection of Installation Location ....................................................................................4
2.6 Electric Connection Requirement ....................................................................................4
2.7 Installation of Indoor Unit...................................................................................................4
2.8 Installation of Outdoor Unit ...............................................................................................7
2.9 Vacuum Pump/Leak Detection ........................................................................................8
2.10 Post Installation Testing ................................................................................................8
3. Troubleshooting
3.1 Precautions before Performing Inspection or Repair .....................................................9
................................................................................................................1
.............................................................................................4
..................................................................................................9
.......................................................i
3.2 Confirmation .................................................................................................................10
3.3 Flashing LED of Indoor/Outdoor Unit and Primary Judgment .....................................10
3.4 How to Check Simply the Main Part .............................................................................19
3.4 Troubleshooting for Normal Malfunction .......................................................................32
Appendix:
Appendix 1: Reference Sheet of Celsius and Fahrenheit ...................................................34
Appendix 2: Configuration of Connection Pipe ....................................................................34
Appendix 3: Pipe Expanding Method ..................................................................................35
Appendix 4: List of Resistance for Temperature Sensor .....................................................36
Customer Service, Technical Support
.......................................................................................................................34
..................................................39
1. Introduction
This manual concentrates on inverter-driven cooling or heat pump air conditioning units. Read this manual
carefully before installation.
This manual should be considered as a permanent part of the air conditioning equipment and should
remain with the air conditioning equipment.
2. Important Safety Instructions
Safety Messages
Indicates a hazardous situation that, if not avoided, could result in death or
serious injury.
Indicates a hazardous situation that, if not avoided, could result in minor or
moderate injury.
Indicates information considered important, but not hazard-related (for
example, messages relating to property damage).
General Precautions
To reduce the risk of serious injury or death, read these instructions
thoroughly and follow all warnings or cautions included in all manuals that
accompanied the product and are attached to the unit. Refer back to these
safety instructions as needed.
● This system should be installed by personnel certied by Johnson Controls, Inc. Personnel must be
qualied according to local, state and national building and safety codes and regulations. Incorrect
installation could cause leaks, electric shock, re or explosion. In areas where Seismic ‘’Performance
requirements are specied, the appropriate measures should be taken during installation to guard against
possible damage or injury that might occur in an earthquake if the unit is not installed correctly, injuries may
occur due to a falling unit.
● Use appropriate Personal Protective Equipment (PPE), such as gloves and protective goggles and,
where appropriate, have a gas mask nearby. Also use electrical protection equipment and tools suited
for electrical operation purposes. Keep a quenching cloth and a re extinguisher nearby during brazing.
Use care in handling, rigging, and setting of bulky equipment.
● When transporting, be careful when picking up, moving and mounting these units. Although the unit may
be packed using plastic straps, do not use them for transporting the unit from one location to another. Do
not stand on or put any material on the unit. Get a partner to help, and bend with your knees when lifting
to reduce strain on your back. Sharp edges or thin aluminum ns on the air conditioner can cut ngers,
so wear protective gloves.
● Do not touch or adjust any safety devices inside the indoor or outdoor units. All safety features,
disengagement, and interlocks must be in place and functioning correctly before the equipment is put
into operation. If these devices are improperly adjusted or tampered with in any way, a serious accident
can occur. Never bypass or jump-out any safety device or switch.
● Johnson Controls, Inc. will not assume any liability for injuries or damage caused by not following steps
outlined or described in this manual. Unauthorized modications to Johnson Controls products are
prohibited as they…
◦ May create hazards which could result in death, serious injury or equipment damage.
◦ Will void product warranties.
◦ May invalidate product regulatory certications.
◦ May violate OSHA standards.
31
i
P5415467
Take the following precautions to reduce the risk of property damage.
● Be careful that moisture, dust, or variant refrigerant compounds not enter the refrigerant cycle during
installation work. Foreign matter could damage internal components or cause blockages.
● If air lters are required on this unit, do not operate the unit without the air lter set in place. If the air
lter is not installed, dust may accumulate and breakdown may result.
● Do not install this unit in any place where silicon gases can coalesce. If the silicon gas molecules
attach themselves to the surface of the heat exchanger, the nned surfaces will repel water. As a
result, any amount of condensate can overow from the condensate pan and could run inside of the
electrical box, possibly causing electrical failures.
● When installing the unit in a hospital or other facility where electromagnetic waves are generated
from nearby medical and/or electronic devices, be prepared for noise and electronic interference
Electromagnetic Interference (EMI). Do not install where the waves can directly radiate into the
electrical box, controller cable, or controller. Inverters, appliances, high-frequency medical equipment,
and radio communications equipment may cause the unit to malfunction. The operation of the unit
may also adversely affect these same devices. Install the unit at least 10 ft. (approximately 3m) away
from such devices.
● When a wireless zone controller is used, locate at a distance of at least 3.3 ft. (approximately 1 meter)
between the indoor unit and electric lighting. If not, the receiver part of the unit may have difculty
receiving operation commands.
● Do not install the unit in any location where animals and plants can come into direct contact with the
outlet air stream. Exposure could adversely affect the animals and plants.
● Do not install the unit with any downward slope to the side of the drain boss. If you do, you may have
water owing back which may cause leaks.
● Be sure the condensate hose discharges water properly. If connected incorrectly, it may cause leaks.
● Do not install the unit in any place where oil can seep onto the units, such as table or seating areas in
restaurants, and so forth. For these locations or social venues, use specialized units with oil-resistant
features built into them. In addition, use a specialized ceiling fan designed for restaurant use. These
specialized oil-resistant units can be ordered for such applications. However, in places where large
quantities of oil can splash onto the unit, such as a factory, even the specialized units cannot be used.
These products should not be installed in such locations.
Installation Precautions
To reduce the risk of serious injury or death, the following installation
precautions must be followed.
● When installing the unit into…
▫ A wall: Make sure the wall is strong enough to hold the unit’s weight. It may be necessary to
construct a strong wood or metal frame to provide added support.
▫ A room: Properly insulate any refrigerant tubing run inside a room to prevent “sweating” that can
cause dripping and water damage to wall and oors.
▫ Damp or uneven areas: Use a raised concrete pad or concrete blocks to provide a solid, level
foundation for the unit to prevent water damage and abnormal vibration.
▫ An area with high winds: Securely anchor the outdoor unit down with bolts and a metal frame.
Provide a suitable air bafe.
▫ A snowy area (only for heat pump model): Install the outdoor unit on a raised platform that is
higher than drifting snow. Provide snow vents.
● Do not install the unit in the following places. Doing so can result in an explosion, re, deformation,
corrosion, or product failure.
▫ Explosive or ammable atmosphere
▫ Where re, oil, steam, or powder can directly enter the unit, such as in close proximity or directly
above a kitchen stove.
▫ Where oil (including machinery oil) may be present.
▫ Where corrosive gases such as chlorine, bromine, or sulde can accumulate, such as near a hot
tub or hot spring.
▫ Where dense, salt-laden airow is heavy, such as in coastal regions.
▫ Where the air quality is of high acidity.
▫ Where harmful gases can be generated from decomposition.
ii
4
P5415467
● Do not position the condensate pipe for the indoor unit near any sanitary sewers where corrosive
gases may be present. If you do, toxic gases can seep into breathable air spaces and can cause
respiratory injuries. If the condensate pipe is installed incorrectly, water leakage and damage to the
ceiling, oor, furniture, or other possessions may result. If condensate piping becomes clogged,
moisture can back up and can drip from the indoor unit. Do not install the indoor unit where such
dripping can cause moisture damage or uneven locations: Use a raised concrete pad or concrete
blocks to provide a solid, level foundation for the unit to prevent water damage and abnormal
vibration.
● Before performing any brazing work, be sure that there are no ammable materials or open
ames nearby.
● Perform a run test to ensure normal operation. Safety guards, shields, barriers, covers, and protective
devices must be in place while the compressor/unit is operating. During the test run, keep ngers and
clothing away from any moving parts.
● Clean up the site when nished, remembering to check that no metal scraps or bits of wiring have
been left inside the unit being installed.
● During transportation, do not allow the backrest of the forklift to make contact with the unit,
otherwise, it may cause damage to the heat exchanger and also may cause injury when
stopped or started suddenly.
● Remove gas inside the closing pipe when the brazing work is performed. If the brazing ller metal is
melted with remaining gas inside, the pipes will be blown off and it may cause injury.
● Be sure to use nitrogen gas for an airtight test. If other gases such as oxygen gas, acetylene gas or
uorocarbon gas are accidentally used, it may cause explosion or gas intoxication.
After installation work for the system has been completed, explain the “Safety Precautions,” the proper use
and maintenance of the unit to the customer according to the information in all manuals that came with the
system. All manuals and warranty information must be given to the user or left near the Indoor Unit.
Refrigerant Precautions
To reduce the risk of serious injury or death, the following refrigerant
precautions must be followed.
● As originally manufactured, this unit contains refrigerant installed by Johnson Controls. Johnson
Controls uses only refrigerants that have been approved for use in the unit’s intended home country
or market. Johnson Controls distributors similarly are only authorized to provide refrigerants that
have been approved for use in the countries or markets they serve. The refrigerant used in this unit
is identied on the unit’s faceplate and/or in the associated manuals. Any additions of refrigerant into
this unit must comply with the country’s requirements with regard to refrigerant use and should be
obtained from Johnson Controls distributors. Use of any non-approved refrigerant substitutes will void
the warranty and will increase the potential risk of injury or death.
● If installed in a small room, take measures to prevent the refrigerant from exceeding the maximum
allowable concentration in the event that refrigerant gases should escape. Refrigerant gases can
cause asphyxiation (0.42 kg/m3 based on ISO 5149 for R410A). Consult with your distributor for
countermeasures (ventilation system and so on). If refrigerant gas has leaked during the installation
work, ventilate the room immediately.
● The design pressure for this product is 601 psi (4.15MPa). The pressure of R410A refrigerant is 1.4
times higher than that of the refrigerant R22. Therefore, the refrigerant piping for R410A shall be
thicker than that for R22. Make sure to use the specified refrigerant piping. If not, the refrigerant
piping may rupture due to an excessive refrigerant pressure. Besides, pay attention to the piping
thickness when using copper refrigerant piping. The thickness of copper refrigerant piping differs
depending on its material.
● The refrigerant R410A is adopted. The refrigerant oil tends to be affected by foreign matters such
as moisture, oxide lm, (or fat). Perform the installation work with care to prevent moisture, dust, or
different refrigerant from entering the refrigerant cycle. Foreign matter can be introduced into the
cycle from such parts as expansion valve and the operation may be unavailable.
● To avoid the possibility of different refrigerant or refrigerant oil being introduced into the cycle, the
sizes of the charging connections have been changed from R407C type and R22 type. It is necessary
to prepare the appropriate tools before performing the installation work.
● Use refrigerant pipes and joints which are approved for use with R410A.
● A compressor/unit comprises a pressurized system. Never loosen threaded joints while the system is
5
P5415467
iii
under pressure and never open pressurized system parts.
● Before installation is complete, make sure that the refrigerant leak test has been performed. If
refrigerant gases escape into the air, turn OFF the main switch, extinguish any open ames and
contact your service contractor. Refrigerant (Fluorocarbon) for this unit is odorless. If the refrigerant
should leak and come into contact with open ames, toxic gas could be generated. Also, because the
uorocarbons are heavier than air, they settle to the oor, which could cause asphyxiation.
● When installing the unit, and connecting refrigerant piping, keep all piping runs as short as
possible, and make sure to securely connect the refrigerant piping before the compressor starts
operating. If the refrigerant piping is not connected and the compressor activates with the stop
valve opened, the refrigerant cycle will become subjected to extremely high pressure, which can
cause an explosion or re.
● Tighten the are nut with a torque wrench in the specied manner. Do not apply excessive force to the
are nut when tightening. If you do, the are nut can crack and refrigerant leakage may occur.
● When maintaining, relocating, and disposing of the unit, dismantle the refrigerant piping after the
compressor stops.
● When pipes are removed out from under the piping cover, after the insulation work is completed,
cover the gap between the piping cover and pipes by a packing (eld-supplied). If the gap is not
covered, the unit may be damaged if snow, rain water or small animals enter the unit.
● Do not apply an excessive force to the spindle valve at the end of opening. Otherwise, the spindle
valve ies out due to refrigerant pressure. At the run test, fully open the gas and liquid valves,
otherwise, these devices will be damaged. (It is closed before shipment.)
● If the arrangement for outdoor units is incorrect, it may cause owback of the refrigerant and result in
failure of the outdoor unit.
● The refrigerant system may be damaged if the slope of the piping connection kit exceeds +15o.
Electrical Precautions
Take the following precautions to reduce the risk of electric shock, re or
explosion resulting in serious injury or death.
● Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram
and these instructions when wiring. Improper connections and inadequate grounding can cause
serious injury or death.
● Perform all electrical work in strict accordance with this installation and maintenance manual and all
the relevant regulatory standards.
● Before servicing, open and tag all disconnect switches. Never assume electrical power is
disconnected. Check with meter and equipment.
● Only use electrical protection equipment and tools suited for this installation.
● Use specied cables between units.
● The new air conditioner may not function normally in the following instances:
▫ If electrical power for the new air conditioner is supplied from the same transformer as the device*
referred to below.
▫ If the power source cables for this device* and the new air conditioner unit are located in close
proximity to each other.
Device*: (Example): A lift, container crane, rectier for electric railway, inverter power
device, arc furnace, electric furnace, large-sized induction motor and large-sized switch.
Regarding the cases mentioned above, surge voltage may be inducted into the power supply
cables for the packaged air conditioner due to a rapid change in power consumption of the
device and an activation of a switch.
Check eld regulations and standards before performing electrical work in order to protect the
power supply for the new air conditioner unit.
iv
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P5415467
● Communication cabling shall be a minimum of 18-Gauge, 2-Conductor, Stranded Copper. Shielded
cable must be considered for applications and routing in areas of high EMI and other sources of
potentially excessive electrical noise to reduce the potential for communication errors. When shielded
cabling is applied, proper bonding and termination of the cable shield is required as per Johnson
Controls guidelines. Plenum and riser ratings for communication cables must be considered per
application and local code requirments.
● Use an exclusive power supply for the air conditioner at the unit’s rated voltage.
● Be sure to install circuit breakers (ground fault interrupter, isolating switch, molded case circuit
breaker and so on), with the specied capacity. Ensure that the wiring terminals are tightened securely
to recommended torque specications.
● Clamp electrical wires securely with a cable clamp after all wiring is connected to the terminal block.
In addition, run wires securely through the wiring access channel.
● When installing the power lines, do not apply tension to the cables. Secure the suspended cables at
regular intervals, but not too tightly.
● Make sure that the terminals do not come into contact with the surface of the electrical box. If the
terminals are too close to the surface, it may lead to failures at the terminal connection.
● Turn OFF and disconnect the unit from the power source when handling the service connector. Do not
open the service cover or access panel to the indoor or outdoor units without turning OFF the main
power supply.
● After ceasing operation, be sure to wait at least ve minutes before turning off the main power
switch. Otherwise, water leakage or electrical breakdown may result. Disconnect the power source
completely before attempting any maintenance for electrical parts. Check to ensure that no residual
voltage is present after disconnecting the power source.
● Do not clean with, or pour water into, the controller as it could cause electric shock and/or damage the
unit. Do not use strong detergent such as a solvent. Clean with a soft cloth.
● Check that the ground wire is securely connected. Do not connect ground wiring to gas piping, water
piping, lighting conductor, or telephone ground wiring.
● If a circuit breaker or fuse is frequently activated, shut down the system and contact your
service contractor.
● Perform all electrical work in accordance with this manual and in compliance with all regulations and
safety standards.
● Do not open a service access cover or panel of an indoor or outdoor unit without rst turning OFF the
power at the main power supply.
● Residual voltage can cause electric shock. At all times, check for residual voltage after disconnecting
from the power source before starting work on the unit.
● This equipment can be installed with a Ground Fault Circuit Breaker (GFCI), which is a recognized
measure for added protection to a properly grounded unit. Install appropriate sized breakers/fuses/
overcurrent protection switches, and wiring in accordance with local, state and NEC codes and
requirements. The equipment installer is responsible for understanding and abiding by applicable
codes and requirements.
v
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P5415467
Installation and Maintenance
2.
Installation
2.1 Installation Dimension Diagram
At least 5 8/9 inch
Space to the ceiling
Space to the wall
At least 5 8/9 inch
Space to the wall
At least 5 8/9 inch
roolf eht ot ecapS
At least 118 inch
Space to the obstruction
Space to the wall
At least 11 4/5 inch
At least 98 3/7 inch
Space to the obstruction
At least 19 2/3 inch
Space to the obstruction
At least 11 4/5 inch
Space to the obstructio
At least 78 3/5 inch
Condensate pipe
Space to the obstruction
At least 19 2/3 inch
1
Installation and Maintenance
2.2 Main Tools for Installation and Maintenance
1. Level meter, measuring tape
4. Electroprobe
7. Electronic leakage detector
2. Screw driver
5. Universal meter
8. Vacuum pump
3. Impact drill, drill head, electric drill
6. Torque wrench, open-end wrench, inner
hex wrench
9. Manifold gauge
10. Pipe pliers, pipe cutter
11. Pipe expander, pipe bender
12. Soldering appliance, refrigerant container
2
Installation and Maintenance
2.3 Installation Procedures
Start installation
Preparation before installation
Read the requirements
for electric connection
Select indoor unit
installation location
Install wall-mounting
frame, drill wall holes
Connect pipes of indoor
unit and drainage pipe
Connect wires of indoor unit
Bind up pipes and
hang the indoor unit
Make the bound pipes pass
through the wall hole and then
connect outdoor unit
Select installation
location
Prepare tools
Select outdoor unit
installation location
Install outdoor unit mount
(select it according to the actual situation)
Mount outdoor unit
Install drainage joint of outdoor unit
(only for cooling and heating unit)
Connect pipes of outdoor unit
Connect wires of outdoor unit
Arrange the pipes
Vacuum pumping and leakage detection
Check after installation and test operation
Finish installation
Note: This flow is only for reference; please find more detailed installation steps in this section.
3
Installation and Maintenance
2.4 Installation - Checking Parts
No. Name No. Name
1 Indoor unit 8 Sealant
2 Outdoor unit 9 Wrapping tape
3 Connection pipe 10
4 Drainage pipe 11 Fixing screw
Wall-mounting
5
frame
Connecting
6
cable(power cord)
7 Wall pipe
Note:
1. Please contact the local agent for installation.
2. Don't use unqualied power cord.
.5 Selection of Installation Location
2
Basic Requirement:
1.
Installing the unit in the following places may cause
malfunction. If it is unavoidable, please consult the local dealer:
(1) Areas with strong heat sources, vapors, flammable or
explosive gas, or volatile objects spread in the air.
(2) Areas with high-frequency devices
machine, medical equipment).
(3) Areas near coast.
(4) Areas with oil or fumes in the air.
(5) Areas with sulfureted gas.
(6) Other places with special circumstances.
2. Indoor Unit:
(1) There should be no obstruction near air inlet and air outlet.
(2) Select a location where the condensation water can be
dispersed easily and won't affect other people.
(3) Select a location which is convenient to connect the
outdoor unit and near the power socket.
(4)
Select a location which is out of reach for children.
(5) The location should be able to withstand the weight of
indoor unit and won't increase noise and vibration.
(6) The appliance must be installed 98 3/7 inch above oor.
(7) Don't install the indoor unit right above the electric
appliance.
(8) The appliance should not be installed in a laundry area.
3. Outdoor Unit:
1.Select a location where the noise and outow air emitted by
the outdoor unit will not affect neighborhood.
2.The location should be well ventilated and dry, in which the
outdoor unit won't be exposed directly to sunlight or strong
wind.
3.The location should be able to withstand the weight of
outdoor unit.
Make sure that the installation complies with requirements
4.
iof the installation dimensions diagram.
5.Select a location which is out of reach for children and far
away from animals or plants.If it is unavoidable, please add
fence for safety purposes.
Support of outdoor
unit
Drainage plug(cooling
12
and heating unit)
Owner’s manual,
13
remote controller
(such as welding
2.6 Electric Connection Requirement
1. Safety Precaution
(1) All electric safety regulations must be followed when
installing the unit.
(2) Use proper power supply circuit and air switch in
accordance with local safety regulations.
(3) The power supply must be sized to meet the requirements
of air conditioning unit. Incorrect sizing/wiring may result in
electric shock,fire hazard or malfunction.
Air-conditioner Air switch capacity
09/12K 16A
18K 20A
24K 30A
(4) Properly connect the live wire, neutral wire and grounding
wire of power socket.
(5) Be sure to cut off the main power supply before
performing any electrical work.
(6) Do not turn power back on until installation is complete.
(7) For appliances with type Y attachment,the instructions
shall contain the substance of thefollowing.If the supply cord is
damaged, it must be replaced by the manufacturer, its
service agent or a qualified technician to avoid any shock
hazards.
(8) The temperature of refrigerant circuit will be high, please
keep the interconnection cable away from the copper tube.
Grounding Requirements:
2.
(1) The air conditioning unit must be properly grounded with
a specialized grounding device by a certified technician.
Please make sure it is always grounded effectively, otherwise
it may cause electric shock.
(2) The yellow-green wire in air conditioner is grounding wire,
which can't be used for other purposes.
(3) The grounding resistance should comply with national
electric safety regulations.
(4) The unit must be positioned so that the plug is
accessible.
(5) An all-pole disconnect switch having a contact separation of at
least 1/8 inch in all poles should be connected in fixed wiring.
(6) Including an air switch with suitable capacity, please note the
following table. Air switch should be included magnet buckle and
heating buckle function, it can protect the circuitshort and
overload. (Caution: Please do not use only the fuse to
protect the circuit.)
2.7 Installation of Indoor Unit
1. Choosing Installation Iocation
Recommend installation location to the client based on field
conditions; then proceed after client approval.
2. Install Wall-mounting Frame
(1) Hang the wall-mounting frame on the wall; adjust it in
horizontal position with the level meter and then point out the
screw xing holes on the wall.
(2) Drill the screw xing holes on the wall with impact drill (the
specification of drill head should be the same as the plastic
expansion particle) and then ll the plastic expansion particles
4
Installation and Maintenance
Rear left
h
Indoor
Outdoor
in the holes.
Wall
Wall
(Rear piping hole)
(Rear piping hole)
Tape
Outlet pipe
Torque wrenc
Open-end
Drain hose
e
(3) Fix the wall-mounting frame on the wall with tapping screws
(ST4.2X25TA) and then check if the frame is rmly installed by
pulling the frame. If the plastic expansion particle is loose,
please drill another xing hole nearby.
3. Install Wall-mounting Frame
(1) Choose the position of piping hole accor
ding to the direction
of outlet pipe. The position of piping hole should be a little
lower than the wall-mounted frame.(As shown in Fig.1)
Space
to the
wall
5 8/9inch
above
Mark on the middle of it
Gradienter
Space
to the
wall
5 8/9inch
above
5. Connect the Pipe of Indoor Unit
(1) Aim the pipe joint at the corresponding bellmouth.(As
shown in Fig.5)
(2) Pretightening the union nut with hand.
(3) Adjust the torque force by referring to the following sheet.
Place the open-end wrench on the pipe joint and place the
torque wrench on the union nut. Tighten the union nut
with torque wrench.(As shown in Fig.6)
(4) Wrap the indoor pipe and joint of connection pipe with
insulating pipe, and then wrap it with tape.(As shown in Fig.7)
(5) If a 18k indoor unit is to be connected with a DHM or
DHW outdoor unit, a transitional pipe joint (provided)
should be added at the pipe joint of indoor unit evaporator
assy as the pipe joint of evaporator assy adopts pipe
diameter of Φ5/8. Please refer to step 1-4 during installation.
Left
Ф2 3/4inch Ф2 3/4inch
Fig.1
(2) Open a piping hole with the diameter of Φ2
Right
3/4inch on the
selected outlet pipe position.In order to drain smoothly, slant
the piping hole on the
wall slightly downward to the
outdoor side with the gradient of 5-10°.(As shown in Fig.2)
5-10
°
Φ2 3/4inc
Fig.2
Note:
(1) Pay attention to dust prevention and take relevant safety
measures when opening the hole.
(2) The plastic expansion particles are not provided and should
be bought locally.
4. Outlet Pipe
(1) The pipe can be led out in the direction of right, rear right,
left or rear left.(As shown in Fig.3)
(2) When selecting leading out the pipe from left or right, please
cut off the corresponding hole on the bottom case.(As show in
Fig.4)
wrench
Fig.7
Pipe
Union nut
h
Indoor pipe
Insulating pipe
Union nutPipe joint
Fig.5 Fig.6
Refer to the following table for torque tightening:
Hex nut diameter(inch) Tightening torque(ft·Ibf)
Φ1/4 11.10~14.75
Φ3/8 20.12~29.50
Φ1/2 33.19~40.56
Φ5/8 44.24~47.94
Φ3/4 51.32~55.31
6. Install Drain Hose
(1) Connect the condensate hose to the outlet pipe of indoor
unit.(As shown
in Fig.8)
(2) Bind the joint with tape.(As show in Fig.9)
Condensate hose
Pipe
5
Fig.3
Right
Left Right
Cut off
the hole
Left
Rear right
Fig.4
pipe
Condensate hose
Fig.9
Outlet
Fig.8
Note:
(1) Add insulating pipe in the indoor condensate hose in
order to prevent condensation.
(2) The plastic expansion particles are not provided.
(As shown in Fig.10)
Insulating pip
Fig.10
Installation and Maintenance
Indoor power cord
7. Connect Wire of Indoor Unit
Indoor
Outdoor
Wall pipe
Upper hook
wall-mounting frame
Wiring cover
Screw
(1) Open the panel, remove the screw on the wiring cover
and then take down the cover.(As shown in Fig.11)
Panel
Fig.11
8. Bind up Pipe
(1) Bind up the connection pipe, power cord and
condensate hose with the band.(As shown in Fig.14)
(2) Reserve a certain length of drain hose and power cord
for installation when binding them. When binding to a certain
degree, separate the indoor power and then separate the
condensate hose.(As shown in Fig.15)
(3) Bind them evenly.
(4) The liquid pipe and gas pipe should be bound separately at
the end.
(2) Fix the wire crossing board on connection wire sleeve at
the bottom case; let the connection wire sleeve go through the
wire crossing hole at the back of indoor unit, and then pull it out
from the front.(As shown in Fig.12)
connection wire sleeve
Fig.12
(3) Remove the wire clip; connect the power connection wire
to the wiring terminal; tighten the screw and then fix the power
connection wire with wire clip.(As shown in Fig.13)
Wiring Cover
Outdoor unit
Fig.13
(4) Put wiring cover back and then tighten the screw.
(5) Close the panel.
Indoor and
outdoor power cord
Gas
pipe
Band
Band
Liquid
pipe
Condensate hose
Fig.14
Connection pipe
Indoor unit
Condensate hose
Fig.15
Note:
(1) The power cord and control wire can't be crossed or
winding.
(2) The condensate hose should be bound at the bottom.
9. Hang the Indoor Unit
(1) Put the bound pipes in the wall pipe and then make them
pass through the wall hole.
(2) Hang the indoor unit on the wall-mounting frame.
(3) Stuff the gap between pipes and wall hole with sealing gum.
(4) Fix the wall pipe.
(As show in Fig.16)
(5) Check if the indoor unit is installed firmly and closed to the
wall.(As shown in Fig.17)
Note:
(1) All wires of indoor unit and outdoor unit should be
connected by a professional.
(2) If the length of power connection wire is insufcient, please
contact the supplier for a new one. Avoid extending the wire by
yourself.
(3) For the air conditioning unit a with plug, the plug
should be reachable after finishing installation.
(4) For the air conditioning unit without a plug, an air switch
must be installed in the line. The air switch should be allpole parting and the contact parting distance should be more
than 3/32 inch.
Fig.17
Sealant
Fig.16
Lower hook of
Note:
Do not bend the condensate hose too excessively in order to
prevent blocking.
6
Installation and Maintenance
The drain hos
Union nut
Foot holes
Foot holes
2.8 Installation of Outdoor Unit
Wall
Drain hose
A
r
Outdoor drain joint
Drain ven
Installupport of Outdoor Unit(select it according to the
1.
actual installation situation)
(1) Select installation location according to the house structure.
(2) Secure
with expansion screws.
(1) Take sufficient protective measures when installing the
outdoor unit.
(2) Make sure the support can withstand at least four times the
unit weight.
(3) The outdoor unit should be installed at least 1 1/6 inch
above the oor in order to install drain joint.(As show in Fig.18)
(4) For the unit with cooling capacity of 2300W~5000W, 6
expansion screws are needed; for the unit with cooling capacity
of 6000W~8000W, 8 expansion screws are needed; for the
unit with cooling capacity of 10000W~16000W, 10 expansion
screws are needed.
the support of outdoor unit on the selected location
Note:
Refer to the following table for torque tightening:
Hex nut diameter(inch) Tightening torque(ft·Ibf)
Φ1/4 11.10~14.75
Φ3/8 20.12~29.50
Φ1/2 33.19~40.56
Φ5/8 44.24~47.94
Φ3/4 51.32~55.31
5. Connect Outdoor Electric Wire
(1) Remove the c
onnection wire sleeve go through the two
holes of bafe; tighten the connection joint of sleeve and bafe;
remove the wire clip; connect the power connection wire and
power cord to the wiring terminal; fix them with screws.(As
shown in Fig.23)
Handle
09/12K
N(1)
223
L1L1L2
t least 1 1/6 inch above the floo
t
Condensate hose
Chassis
Fig.18 Fig.19
2. Install Drain Joint(only for cooling and heating unit)
(1) Connect the outdoor drain joint into the hole on the
chassis.(2) Connect the condensate hose into the drain
vent.(As shown in Fig.19)
3. Fix Outdoor Unit
(1) Place the outdoor unit on the support.
(2)
Fix the foot holes of outdoor unit with
bolts.(As shown in Fig.20)
Handle
Fig.20
Fig.21
4. Connect Indoor and Outdoor Pipes
(1) Remove the screw on the right handle of outdoor unit and
then remove the handle.(As show in Fig.21)
(2) Remove the screw cap of
valve and aim the pipe joint at the
bellmouth of pipe.(As shown in Fig.22)
Fig.23
G
N(1)
Indoor unit connection
Indoor unit connection
18/24K
3
Power
L1
L2
L2
G
L2
L1
(2) Fix the power connection wire and power cord with wire clip.
Note:
(1) After tightening the screw, pull the power cord slightly to
check if it is rm.
(2) Never cut the power connection wire to prolong or shorten
the distance.
Arrange the Pipes
6.
(1) The pipes should be placed along the wall, bent reasonably
and hidden. The semidiameter of bending the pipe is 4 in.
(2) If the outdoor unit is higher than the wall hole, a U-shaped
curve in the pipe is a must before pipe goes into the room, in
order to prevent rain from getting into the room.(As shown in
Fig.24)
can't raise
upwards
Power
Liquid pipe
Liquid
valve
gas pipe
gas valve
Fig.22
(3) Pretightening the union nut with hand.
(4) Tighten the union nut with torque wrench .
7
Pipe joint
Fig.24
U-shaped curve
Note:
(1) The through-wall height of drain hose shouldn't be higher
than the outlet pipe hole of indoor unit.(As shown in Fig.25)
(2) Slant the condensate hose slightly downwards. The
condensate hose can't be curved, raised or fluctuant.(As
shown in Fig.26)
Fig.25
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