Johnson Controls DOAS Series User manual

P00861Q
Operation
Manual
INVERTER-DRIVEN
MULTI-SPLIT SYSTEM
HEAT PUMP
AIR CONDITIONERS
IMPORTANT:
READ AND UNDERSTAND
THIS MANUAL BEFORE
USING THIS HEAT PUMP
AIR CONDITIONER.
KEEP THIS MANUAL FOR
FUTURE REFERENCE.
Type Model
DOAS
(Dedicated Outdoor
Air System)
(H,Y)DOA096B21S

P00861Q-rev.1 i
Important Notice
ƔJohnson 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.
ƔJohnson Controls Inc. cannot anticipate every possible circumstance that might involve a potential
hazard.
ƔThis heat pump 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.
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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.
ƔThis heat pump air conditioning unit will be operated and serviced in the United States of America and
comes with a full complement of the appropriate Safety, Danger, and Caution, warnings.
ƔIf you have questions, please contact your distributor or dealer.
ƔThis manual provides common descriptions, basic and advanced information to maintain and service
this heat pump air conditioning unit which you operate as well for other models.
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performance and long life, operate this unit within the range limits according to the table below.
ƔThis manual should be considered as a permanent part of the air conditioning equipment and should
remain with the air conditioning equipment.
Temperature
Maximum Minimum
Outdoor Air
Cooling Operation 109o)'% (43oC DB) 68o)'% (20oC DB)
Heating Operation 59o)'% (15oC DB) 20o)'% (-7oC DB)
DB: Dry Bulb, WB: Wet Bulb

ii P00861Q-rev.1
TABLE OF CONTENTS
1. Introduction .....................................................................................................................................................1
2. Safety Instructions ..........................................................................................................................................1
3. Before Operation.............................................................................................................................................6
3.1 Working Range.......................................................................................................................................6
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3.3 Control Mode..........................................................................................................................................7
4. Names of Parts ...............................................................................................................................................8
4.1 Indoor Unit (DOAS) ................................................................................................................................8
4.2 Wired Controller (CIW01) .......................................................................................................................9
5. Operation Method .........................................................................................................................................10
5.1 Basic Operation....................................................................................................................................10
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5.3 Temperature Setting .............................................................................................................................12
5.4 Operation..............................................................................................................................................13
6. Automatic Control .........................................................................................................................................14
7. Maintenance .................................................................................................................................................15
 &OHDQLQJ$LU)LOWHU ................................................................................................................................15
7.2 Maintenance.........................................................................................................................................16
8. Troubleshooting ............................................................................................................................................17
8.1 This is Not Abnormal ............................................................................................................................17
8.2 Before Contacting a Contractor............................................................................................................18
8.3 Contact Distributor................................................................................................................................19
8.4 Alarm Code ..........................................................................................................................................20

P00861Q-rev.1 1
1. Introduction
This is operation manual for the indoor unit.
Read this operation manual carefully before operating this product.
Keep this operation manual with this product.
2. Safety Instructions
Signal Words
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.
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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.
ƔUse 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
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brazing. Use care in handling, rigging, and setting of bulky equipment.
ƔWhen 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
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ƔDo 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.

2 P00861Q-rev.1
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procedures at all main switches.
ƔThis unit is the pressurized system. Never loosen threaded joints while the system is under pressure
and never open pressurized system parts.
ƔJohnson Controls will not assume any liability for injuries or damage caused by not following steps
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prohibited as they…
ƕMay create hazards which could result in death, serious injury or equipment damage;
ƕWill void product warranties;
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ƕMay violate OSHA standards;
Refrigerant Precautions
To reduce the risk of serious injury or death, the following refrigerant
precautions must be followed.
ƔAs 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
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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.
ƔIf 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 (0.026 lbs/ft3(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.
ƔBefore installation is complete, make sure that the refrigerant leak test has been performed. If
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ƔWhen 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
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ƔA compressor/unit comprises a pressurized system. Never loosen threaded joints while the system is
under pressure and never open pressurized system parts.
ƔWhen maintaining, relocating, and disposing of the unit, dismantle the refrigerant piping after the
compressor stops.

P00861Q-rev.1 3
Electrical Precautions
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explosion resulting in serious injury or death.
ƔHighly 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.
ƔBefore servicing, open and tag all disconnect switches. Never assume electrical power is disconnected.
Check with meter and equipment.
ƔOnly use electrical protection equipment and tools suited for this installation.
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ƔCommunication cable should be a minimum of AWG18 (0.82mm2), 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 cable 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 requirements.
ƔUse an exclusive power supply for the air conditioner at the unit’s rated voltage.
ƔBe sure to install circuit breakers (ground fault interrupter, isolating switch, molded case circuit breaker
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system and contact your service contractor.
ƔClamp 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.
ƔWhen installing the power lines, do not apply tension to the cables. Secure the suspended cables at
regular intervals, but not too tightly.
ƔMake 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.
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power supply.
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Otherwise, water leakage or electrical breakdown may result. Disconnect the power supply completely
before attempting any maintenance for electrical parts. Check to ensure that no residual voltage is
present after disconnecting the power supply.
ƔDo 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.
ƔCheck that the ground wiring is securely connected. Do not connect ground wiring to gas piping, water
piping, lighting conductor, or telephone ground wiring.
ƔIf a circuit breaker or fuse is frequently activated, shut down the system and contact your service
contractor.
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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.

4 P00861Q-rev.1
Operation
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electrical components.
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electrical shock.
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appliances (space heaters). It may interfere with the combustion process in these units.
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isolated pockets that can make people uncomfortable.
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refrigerant gases that happen to come into contact with any heat source can become toxic on contact
which can cause suffocation in the immediate area.
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and damage to the unit.
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Incidental contact with energized components can prove fatal.

P00861Q-rev.1 5
Repair / Relocation
Others
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result in damage to internal components with severe or fatal electrical shock.
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contractor. Serious or fatal injury can occur.
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accident or injury.
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FRQWUDFWRU,IWKHUHSDLUDQGWKHLQVWDOODWLRQDUHQRWFRPSOHWHGLWPD\FDXVHDQHOHFWULFVKRFNRU¿UH

6 P00861Q-rev.1
3. Before Operation
Power is turned on. Apply power to the outdoor unit(s) at least 12 hours prior to operation of the
system for preheating of the compressor oil. Make sure that the outdoor unit is not covered with
snow or ice. If it is, remove it by using hot water that is approximately 122oF (50oC).
If the water temperature is higher than 122oF (50oC), it will cause damage to plastic parts.
Ɣ 7XUQ2))WKHPDLQSRZHUVZLWFKZKHQWKHV\VWHPLVVWRSSHGIRUDORQJSHULRGRIWLPH
,IWKHPDLQVZLWFKLVQRWWXUQHG2))HOHFWULFLW\LVFRQVXPHGEHFDXVHWKHRLOKHDWHULVDOZD\VHQHUJL]HG
during compressor stopping.
Ɣ :KHQWKHV\VWHPLVVWDUWHGDIWHUDVKXWGRZQORQJHUWKDQDSSUR[LPDWHO\WKUHHPRQWKVLWLVUHFRPPHQGHG
that the system be checked by your service contractor.
NOTICE
 (I¿FLHQW8VHRI,QGRRU8QLW
Ɣ Do not leave a window or a door open.
7KHRSHUDWLQJHI¿FLHQF\ZLOOEHGHFUHDVHG
,WPD\FDXVHFRQGHQVDWLRQRIWKHLQGRRUXQLW9HQWLODWHDURRPVXI¿FLHQWO\
Ɣ Attach a curtain or a blind to a window.
%ORFNLQJGLUHFWVXQOLJKWLQWRDURRPZLOOLQFUHDVHHI¿FLHQF\
Ɣ Do not use heating appliances during cooling operation as much as possible.
7KHFRROLQJHI¿FLHQF\ZLOOEHGHFUHDVHGZKLFKPD\FDXVHGHZFRQGHQVDWLRQDQGGHZGURS
Ɣ Use a circulator if warm air stays around the ceiling.
Comfort will be increased. Contact your distributor for details for using a circulator.
Ɣ Turn OFF the main power source if the indoor unit is not to be used for a long period.
The standby electricity charges will have to be paid even if the indoor unit is unused.
3.1 Working Range
This heat pump air conditioner has been designed for the following temperatures. Operate the heat pump air
conditioner within this range.
Temperature
Maximum Minimum
Outdoor Air
Cooling Operation 109o)'% (43oC DB) 68o)'% (20oC DB)
Heating Operation 59o)'% (15oC DB) 20o)'% (-7oC DB)
DB: Dry Bulb, WB: Wet Bulb

P00861Q-rev.1 7
3.3 Control Mode
This unit have two control modes, “Indoor Temperature Control” and “Outlet Air Temperature Control”.
The feature of each control mode is as shown below.
(Contact your distributor or contractor about the changing of control mode and more details.)
Indoor Temperature Control
This function controls operation to keep the indoor
temperature almost at the set temperature on the
wired controller. The set temperature on the wired
controller is as follows.
&22/)$1 66o)WRo)oC to 30oC)
HEAT 62o)WRo)oC to 30oC)
Outlet Air Temperature Control
OIf multiple indoor units are connected to one
outdoor unit, the temperature setting of all
the indoor units shall be the same. Different
temperature setting may make the outlet air
temperature unstable.
This function controls operation to keep the
discharge temperature almost at the set
temperature on the wired controller. The set
temperature on the wired controller is as follows.
&22/)$1 56o)WRo)oC to 25oC)
HEAT 66o)WRo)oC to 30oC)
NOTE
If the difference between the indoor temperature and the set temperature is too large or too small, the
indoor temperature might not be close to the set temperature.
NOTICE

8 P00861Q-rev.1
4. Names of Parts
4.1 Indoor Unit (DOAS)
< Installation Condition >
Drain Piping
Connection
Air Inlet
Air Outlet
Gas Piping
Connection
Liquid Piping
Connection
Wired Controller
(Optional)
The operating condition
is displayed on the LCD
Electrical Box
DOAS Indoor Unit
DOAS Indoor Unit
Air Outlet
Air Inlet
Discharge Air Duct
(Field-Supplied)
Suction Air Duct
(Field-Supplied)
Wired Controller
(Optional)
Air Filter
(Field-Supplied)
In some cases, it could
be placed at other
places depending on
the installation work.
Remote Sensor
(Accessory)
Make sure to mount this
part as essential to the
operation of the product.

P00861Q-rev.1 9
Display Part
OK
Menu
Back/Help ECO
On/Off
A/C
MODE TEMP
COOL
LOUV. Adj.
Meeting Room
FLTR
Filter Sign Indicator
FLTR
It is indicated at the set period for
¿OWHUFOHDQLQJ
Operation Lock Indicator
It is indicated when the operation
lock function is set. (*)
Schedule Timer Indicator
It is indicated when the schedule
timer function is set. (*)
Directional Key Enter Key
On/Off Switch
Run Indicator
It lights while the unit is
RSHUDWHGDQGLWÀDVKHV
in abnormal conditions.
Operation Mode
Indicator
The indications of
“HEAT” and “AUTO” are
indicated only for the
heat pump type models.
Operation Guide
Indicator
“Central Control” is
indicated while the
controller operation is
prohibited.
Operation Part
ECO Switch (*)
Back/Help Switch
To return to the previous
screen.
Menu Switch (*)
To display Menu.
Room Name
Indicator (*)
NOTE
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unit according to the manual for that controller.
Ɣ 3UHVVWKHVZLWFKHVOLJKWO\WRFRQWUROWKHZLUHGFRQWUROOHU'RQRWSUHVVWKHZLUHGFRQWUROOHUZLWKDVKDUS
object such as a pen. It may cause damage to the control part.
Ɣ )RUGHWDLOVGHVFULSWLRQUHIHUWRWKHRSHUDWLRQPDQXDOIRUWKHZLUHGFRQWUROOHU
The example below references the control panel and all
adjustable settings. The wired controller display may be
different during actual operation.
Setting Temperature
Indicator
4.2 Wired Controller (CIW01)

10 P00861Q-rev.1
Item
Selection
By pressing “ ”or “ ”, the icon “ ”
will move between “MODE”, “SPEED”,
“LOUV.” and “TEMP”.
OK
Menu
Back/Help
Change of
Settings
With (“MODE” or “TEMP”) selected,
press “ ” or “ ”.
The setting will be changed.
OK
Menu
Back/Help
5. Operation Method
5.1 Basic Operation

P00861Q-rev.1 11
* Cooling Operation: To decrease the room temperature.
* Heating Operation: To increase the room temperature.
)DQ2SHUDWLRQ 7RFLUFXODWHWKHDLULQWKHURRP
Before
Operation
Turn ON the power supply.
Turn ON the main power approximately
12 hours before operation in order to
preheat the compressor.
'RQRWWXUQ2))WKHPDLQSRZHURIWKH
indoor unit during season of heating or
cooling.
Connecting
1
Press “ ” or “ ” to select “MODE”.
OK
Menu
Back/Help
2
By pressing “ ” or “ ”, the mode will be
changed as follows.
OK
Menu
Back/Help
ƔAutomatic Cooling / Heating operation requires an extra setting.
Contact your distributor or contractor for details.
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 &RROLQJ+HDWLQJ)DQ2SHUDWLRQ
Ɣ7KHFRQWURORIKXPLGLW\LVXQDYDLODEOHZLWKWKLVXQLW,I\RXUHTXLUHGHKXPLGLILFDWLRQDQGWKHFRQWURORI
humidity, choose specialized equipments.
<Function>
FAN HEAT (AUTO)COOL

12 P00861Q-rev.1
1
Press “ ” or “ ” and select “TEMP”.
OK
Menu
Back/Help
2
By pressing “ ”, the temperature is
increased by 1o)oC).
By pressing “ ”, the temperature is
decreased by 1o)oC).
* Refer to Section 3.3 “Control Mode”
for the setting temperature range.
OK
Menu
Back/Help
ƔIn case the optional function “Automatic Reset of Setting Temperature” is set:
Even if changing the setting temperature on the wired controller, it automatically returns to the
temperature set by “Automatic Reset Temperature” after a set time.
Ɣ0LQLPXPDQGPD[LPXPWHPSHUDWXUHVHWSRLQWOLPLWVFDQEHFRQ¿JXUHGE\VHOHFWLQJDFRROLQJORZHUOLPLW
DQGKHDWLQJXSSHUOLPLWLQWKH³)XQFWLRQ6HOHFWLRQ´PRGHRIWKHZLUHGFRQWUROOHUV7HVW5XQ0HQX
ƔContact your distributor or dealer for details on optional functions “Automatic Reset of Setting
Temperature,” “Cooling Lower Limit for Setting Temperature” and “Heating Upper Limit for Setting
Temperature.”
5.3 Temperature Setting

P00861Q-rev.1 13
Operation
Start
Press “ ” (On/Off).
The RUN indicator will be turned ON and
the operation will start. OK
On/Off
< Temperature Setting >
Ɣ The setting condition will be memorized. Therefore, no daily setting is required. Temperature setpoint
ZLOOEHUHWDLQHGDIWHUWKHLQGRRUXQLWLVWXUQHG2))DWWKHFRQWUROOHU,QDFDVHZKHUHWKHVHWWLQJFKDQJHLV
required, refer to Sections 5.2 and 5.3.
Operation
Stop
Press “ ” (On/Off) again.
7KH581LQGLFDWRUZLOOEHWXUQHG2))
and the operation will stop.
OK
On/Off
Ɣ The indoor unit fan may continue to operate for up to two minutes following the heating cycle to dissipate
residual heat from the indoor unit.
5.4 Operation

14 P00861Q-rev.1
NOTE
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If the space is large or the room temperature is excessively low, it takes time to heat the entire room.
If the room has been heated enough and discharged air reaches a required temperature, the indication
“HOT-START”ZLOOEHWXUQHG2))DIWHUKHDWLQJWKHURRP
Ɣ 7KHLQGLFDWLRQ“HOT-START” may be displayed during, or right after, the defrosting operation.
“HOT-START” is activated during defrost to ensure comfort by reducing the delivery of cold air in the
heating cycle. This is NOT abnormal.
6. Automatic Control
This air conditioner automatically starts the following operations according to the indoor conditions.
Three-Minute Guard
ƒ(QIRUFHG6WRSSDJH
The compressor remains off for at least three minutes once it has
stopped. If the system is started within approximately three minutes
after it has stopped, the RUN indicator is activated.
However, the cooling operation or the heating operation remains off
and does not start until after three minutes has elapsed.
ƒ(QIRUFHG2SHUDWLRQ
,IDOOLQGRRUXQLWVRIWKHV\VWHPDUH7KHUPR2))ZLWKLQDSSUR[LPDWHO\
three minutes after the compressor has started, the compressor is
operated during three minutes continuously.
However, if all indoor units of the system are stopped by a controller,
compressor has stopped.
Cooling
and
Dry
)URVW3UHYHQWLRQ
When the indoor unit is operated at a low discharge air temperature,
the cooling operation may be changed to fan operation for a while to
avoid frost formation on the indoor heat exchanger.
Self-Cleaning of
Expansion Valve
The expansion valve self-cleaning when the cooling operation has
VWRSSHG7KHVRXQGRIZKLFKWKHUHIULJHUDQWÀRZVPD\EHKHDUGIURP
the indoor unit during the self-cleaning. This is not abnormal.
Heating
Hot Start
To prevent cold air discharge in the room, the fan speed is
automatically changed according to the discharge air temperature.
At this time “HOT-START” is displayed on the LCD of the wired
controller.
Defrost Operation The indoor unit fan operation is stopped to prevent cold air discharge
during the defrost operation.
Residual
Heat Removal
When the heating operation is stopped, the indoor fan operation may
be kept at the slow position for a maximum of two minutes to lower
temperature of the inside of the indoor unit.
)UHH]H3URWHFWLRQ
To prevent heat exchanger of the indoor unit from freezing, the
operation mode automatically switches to heating operation if the
outdoor temperature drops down to 32o)oC). Moreover, the
operation automatically stops if the outdoor temperature drops to 20o)
(-7oC) or the heat exchanger temp. drops abnormally.
* Display of the wired controller does not change even in this case.
* If the unit is not simultaneous cooling/heating unit, the operation does
not switch to heating operation, but automatically stops when the
outdoor temperature drops to 32o)oC).
The system is equipped with the following functions.

P00861Q-rev.1 15
7. Maintenance
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FRQWUROOHU'HIDXOW¿OWHUWLPHIRUWKHGXFWHGXQLWVLVKRXUV
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UHVXOWPD\EHDQHOHFWULFVKRFNRU¿UH
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cause the product to fall, resulting in an injury.
NOTICE
Ɣ 'RQRWRSHUDWHWKHV\VWHPZLWKRXWWKHDLU¿OWHUWRSURWHFWWKHLQGRRUXQLWKHDWH[FKDQJHUIURPEHLQJ
clogged.
)LOWHU6LJQ
OK
Menu
Back/Help ECO
On/Off
A/C
MODE TEMP
COOL
LOUV. Adj.
Meeting Room
FLTR
 &OHDQLQJ$LU)LOWHU
&OHDQWKHDLU¿OWHUZKHQWKH¿OWHUVLJQLVWXUQHG21
$LU¿OWHULVD¿HOGVXSSOLHG
7KH¿OWHUFOHDQLQJPHWKRGLVIROORZHGDFFRUGLQJWRWKHPDQXDOLQFOXGHGZLWKWKH¿OWHU

16 P00861Q-rev.1
NOTE
 5HVHWWKH¿OWHUVLJQ
x Press “Menu”.
6HOHFW³5HVHW)LOWHU6LJQ7LPH´IURPWKHPHQXDQGSUHVV³2.´
7KHFRQ¿UPDWLRQVFUHHQZLOOEHGLVSOD\HG
x Select “Yes” by pressing “ ” or “ ” and press “OK”.
7KHLQGLFDWLRQRI³)/75´ZLOOEHWXUQHG2))DQGWKHVFUHHQZLOOUHWXUQWRWKHQRUPDOPRGH
Menu
Power Saving Setting
Elevating Grille
Operation Schedule
Reset Filter Sign Time 01
/
05
Simple Timer
15:10(Fri)
Entr RtrnSel. OK Back
,IWKHDFFXPXODWHGRSHUDWLRQWLPHLVVKRUWHUWKDQWKH¿OWHUVLJQVHWWLQJWKHLQGLFDWLRQ³ ” is turned ON and
“Setting Disabled” will be displayed.
7.2 Maintenance
• Remove obstacles around the air inlet and the air
outlet of the indoor unit and outdoor unit.
 &KHFNWKDWWKHDLU¿OWHULVQRWFORJJHGZLWKGXVW
and dirt.
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JULOOHWRPDLQWDLQWKHV\VWHPVSHDNSHUIRUPDQFH
DQGHI¿FLHQF\
Beginning of Start Up Regular Maintenance