Aisin AXSP22P7-W User manual

AXSP22 - 140P7D
Always read before installation.
Applicable models
AXSP22P7DAXSP71P7D
AXSP28P7DAXSP90P7D
AXSP36P7DAXSP112P7D
AXSP45P7DAXSP140P7D
AXSP56P7D
Important reminder
- THOROUGHLY READ THESE INSTRUCTIONS BEFORE STARTING THE INSTALLATION AND FOLLOW
ALL PROCEDURES DESCRIBED WITHIN.
- KEEP THIS MANUAL IN A HANDY PLACE FOR FUTURE REFERENCE.
After installation, always use the checklist to perform a final inspection.
INSTALLATION AND MAINTENANCE INSTRUCTIONS
[ Model ] Standar duct Type
Aisin INDOOR UNITS

Installation manual
1
AXSP22~140P7D
Gas driven heat pump air conditioners
Indoor unit
CONTENTS Page
Safety Precaution.............................................................................. 1
Before installation.............................................................................. 3
Important information regarding the refrigerant used ........................ 4
Transporting the indoor unit .............................................................. 4
Selecting installation site ................................................................... 4
Preparations before installation......................................................... 5
Indoor unit installation ....................................................................... 7
Refrigerant piping work ..................................................................... 7
Drain piping work .............................................................................. 9
Electric wiring work ..........................................................................11
Wiring example and how to set the remote controller ..................... 12
Wiring example ............................................................................... 13
Installation of the decoration panel.................................................. 14
Field setting..................................................................................... 14
External static pressure settings ..................................................... 15
Test operation.................................................................................. 16
Wiring diagram ................................................................................ 17
SAFETY PRECAUTION
The types of injuries and damages that can occur if this units are
improperly installed are divided into and covered
under the “ Warning” and “ Caution” graphics and other
symbols. Follow these instructions carefully.
Meaning of warning, caution and other symbols.
WARNING
AXSP22P7-W AXSP45P7-W AXSP90P7-W
AXSP28P7-W AXSP56P7-W AXSP112P7-W
AXSP36P7-W AXSP71P7-W AXSP140P7-W
Gas driven heat pump air conditioners
Indoor unit Installation manual
READ THESE INSTRUCTIONS CAREFULLY BEFORE
INSTALLATION. KEEP THIS MANUAL IN A HANDY
PLACE FOR FUTURE REFERENCE.
IMPROPER INSTALLATION OR ATTACHMENT OF
EQUIPMENT OR ACCESSORIES COULD RESULT IN
ELECTRIC SHOCK, SHORT-CIRCUIT, LEAKS, FIRE OR
OTHER DAMAGE TO THE EQUIPMENT. BE SURE
ONLY TO USE ACCESSORIES MADE BY AISIN WHICH
ARE SPECIFICALLY DESIGNED FOR USE WITH THE
EQUIPMENT AND HAVE THEM INSTALLED BY A
PROFESSIONAL.
IF UNSURE OF INSTALLATION PROCEDURES OR
USE, ALWAYS CONTACT YOUR AISIN DEALER FOR
ADVICE AND INFORMATION.
WARNING Failure to observe a warning may result in
death or serious injury.
CAUTION Failure to observe a caution may result in
injury or damage to the equipment.
Indicates a prohibited action.
Indicates a necessary action.
Indicates a necessity to install a secure earth
connection.
Ask your dealer or qualified personnel to carry out
installation work. Do not try to install the machine yourself
.
Improper installation may result in water leakage, electric
shocks or fire. All field piping must be provided by a licensed
refrigeration technician and must comply with the relevant
local and national codes.
Install the indoor unit on a foundation strong enough to
withstand the weight of the unit.
A foundation of insufficient strength may result in the
equipment falling and causing injuries.
Carry out the specified installation work after taking into
account strong winds, typhoons or earthquakes.
Improper installation work may result in the equipment falling
and causing accidents.
When installing the unit in a small room, take measures
against to keep refrigerant concentration from
exceeding allowable safety limits in the event of
refrigerant leakage.
Excessive refrigerant in a closed ambient can lead to oxygen
deficiency.
Perform installation work in accordance with this
installation manual.
Improper installation may result in water leakage, electric
shocks or fire.
Be sure to use only the specified accessories and parts
for installation work.
Failure to use the specified parts may result in water
leakage, electric shocks, fire or the unit falling.
After completing the installation work, check that the
refrigerant gas does not leak.
Toxic gas may be produced if the refrigerant gas leaks into
the room and comes into contact with a source of fire, such
as a fan heater, stove or cooker.
Do not allow anything other than the designated
refrigerant to get mixed into the refrigerant circuit, such
as air, etc.
Doing so could cause an explosion or a fire.
Never touch the refrigerant leaking from refrigerant
piping connection.
If the refrigerant is put on hands, it may cause a frost bite.
If any refrigerant gas leaks while working on the unit,
ventilate the area throughly right away.
Toxic gas may be produced if the refrigerant gas comes into
contact with fire.
Tighten the flare with double wrenches and use a torque
wrench to check that the tightening torque is proper.
If the torque is not proper, a joint broken by over tightening
or a joint loose by under tightening could allow refrigerant to
leak and cause a shortage of oxygen.
Do not route the drain piping directly into to a location
where corrosive gas, such as sulfurous acid gas, could
potentially be generated.
Corrosive gas could enter the indoor and could cause a gas
poisoning or a shortage of oxygen.
Do not touch the drain pump during the drainage flow
testing.
Failure to do so may result in electric shocks.

AXSP22~140P7D
Gas driven heat pump air conditioners
Indoor unit
Installation manual
2
CAUTION
IMPORTANT REMINDER
Make sure that a separate power supply circuit is
provided for this unit and that all electrical work is
carried out by qualified personnel according to local
laws and regulations and this installation manual.
An insufficient power supply capacity or improper electrical
construction may lead to electric shocks or fire.
Be sure to install a secure earth connection.
Do not earth the unit to the followings:
(a) gas pipes: might cause explosions or fire if gas leaks.
(b) telephone ground wires or lightning rods: might
cause abnormally high electric potential in the ground
during lightning storms.
(c) plumbing pipes: no grounding effect if hard vinyl
piping is used.
Be sure to install an earth leakage breaker.
Failure to do so may result in electric shocks, or fire.
Never turn on the unit before finishing the installation
work.
Failure to do so could cause electrical shock or damage to
the indoor unit.
When clamping the wirings, be sure to clamp wires
appropriately not to apply any excessive power to the
wire connections.
Improper clamping could damage the wires and may result
in electric shocks, fire or the terminals overheating.
Make sure that the remote controller wiring, and the
transmission wiring between the unis, and other
electrical wiring do not pass through the same locations
outside the unit separating as followings:
- Outside the unit; at least 50 mm
- Inside the unit; at least 25 mm
Failure to do so could cause an electrical noise (external
static) and result in mistaken operation or breakage.
When wiring the power supply and connecting the
remote controller wiring and transmission wiring,
position the wires so that the switch box lid can be
securely fastened. When attaching the service lid, make
sure no wirings get caught in the edges.
Improper positioning of the switch box lid may result in
electric shocks, fire or the terminals overheating.
Never connect the power supply wiring to the terminal
board for transmission wiring.
This mistake could damage the entire system.
When performing field settings or test operation without
attaching the decoration panel, do not touch the drain
pump.
This may cause electric shock.
Be sure to stop operation and turn the power switch off
before touching the electrical parts.
Failure to do so could result in an electrical shock or unit
malfunction.
Do not touch the switch with wet hands.
This may cause electric shock.
Be sure to handle with care for transporting the unit.
Some of the units are covered with the PP band for
strapping. Be sure not to grab straps when handling.
Be sure to dispose all of the packing materials after
taking out the unit.
Nails and wooden crates may cause a serious injury from
sticking. Plastic sheet covering the unit may result in an
asphyxia if a child play with it. Tear the plastic sheet before
disposing.
Locate the indoor and outdoor units, power supply
wiring and connecting wires at least 1 meter away from
televisions or radios in order to prevent image
interference or noise.
Depending on the radio waves, a distance of 1 meter may
not be sufficient enough to eliminate the noise.
Do not install the indoor unit in the following locations:
(a) where a mineral oil mist or an oil spray or vapor is
produced, for example in a kitchen
Plastic parts may deteriorate and fall off or result in
water leakage.
(b) where corrosive gas, such as sulfurous acid gas,
is produced
Corroding copper pipes or soldered parts may result in
refrigerant leakage.
(c) where flammable gases may leak, where there are
carbon fiber or ignitable dust suspensions in the
air, or where volatile flammables such as thinner or
gasoline are handled.
Operating the unit in such conditions may result in fire.
Do not install the unit tilted. The indoor unit is equipped
with a built-in drain pump and float switch.
If the unit is tilted against condensate flow, the float switch
may malfunction and cause water to drip.
Be sure to insulate any field piping all the way to the
piping connection inside the unit.
Any exposed piping may cause condensation or burns if
touched.
While following the instructions in this installation
manual, install drain piping in order to ensure proper
drainage and insulate piping in order to prevent
condensation.
Improper drain piping may result in water leakage and
property damage to furniture and belongings.
Be sure not to touch the heat exchanger fin.
Failure to do so may result in serious injury.
Be sure to wait for at least five minutes before turning
off the power switch after stopping the operation.
Failure to do so may cause water leakage or other problem.
! Remote controller (wireless kit) transmitting distance can result
shorter than expected in rooms with electronic fluorescent lamps.
(inverter or rapid start types)
Install the indoor unit as far away from fluorescent lamps as
possible.
! Electromagnetic waves may disturb the operation of the control
system and result in a malfunction of the unit. Do not install the
unit near machinery emitting electromagnetic waves.
! Do not place objects that are susceptible to moisture directly
beneath the indoor or outdoor units. Under certain conditions,
condensation on the main unit or refrigerant pipes, air filter dirt or
drain blockage may cause dripping, resulting in fouling or failure
of the object concerned.
! Be sure not to install the indoor unit into locations where the air
contains high levels of salt such as that near the ocean, where
the voltage fluctuates greatly such as that in a factories. Also in
vehicles and vessels.
! All field piping must be provided by a licensed refrigeration
technician and must comply with the relevant local and national
codes.

Installation manual
3
AXSP22~140P7D
Gas driven heat pump air conditioners
Indoor unit
BEFORE INSTALLATION
Be sure to check the type of R410A refrigerant to be used before
installing the unit. Using an incorrect refrigerant will prevent nor-
mal operation of the unit.
This units, both indoor and outdoor, are suitable for installation
in a commercial and light industrial environment. If installed as a
house hold appliance, it could cause electromagnetis
interference.
This unit is a class A product. In a domestic environment this
product may cause radio interference in which case the user
may be required to take adequate measures.
Refer to the installation manual attached to the outdoor unit for
the details about GHP outdoor unit installation.
Do not place objects in direct proximity of the outdoor unit and
do not let leaves and other debris accumulate around the unit.
Leaves are a hotbed for small animals which can enter the unit.
Once in the unit, such animals can cause malfunctions, smoke
or fire when making contact with electrical parts.
Accessories
Check if the following accessories are included with your unit.
Screws for fixing panels are attached to the air inlet panel.
Optional accessories
Following optional accessories and remote controller are required to
operate this indoor unit. For the installation, refer to the installation
manual attached to each accessory.
Decoration panel: Prepare an appropriate panel according
following chart. Refer to Fig. 6a-c of "Preparations before
installation" on page 5.
When installing bottom suction: air inlet panel and canvas
connection for the air inlet panel Refer to Fig. 7a-c of
"Preparations before installation" on page 5.
! When installing the air inlet panel toghether with the canvas
connection, 465 mm or more height of ceiling space is required.
Wired remote controller: There are two types of remote
controllers. Select a remote controller according to customer
request and install in an appropriate place.
For the following items, take special care during construction
and check after installation is finished
1 Items to be checked after completion of installation work
*Also review the #SAFETY PRECAUTION# on this manual
! Do not use flux when brazing refrigerant piping. Therefore, use
the phosphor copper brazing filter metal (BCup-2: JIS Z 3264/B-
Cu93P-710/795/: ISO 3677) which does not require flux.
Flux has extremely harmful influence on refrigerant piping
systems. For instance, if the chlorine based flux is used, it will
cause pipe corrosion or, in particular, if the flux contains fluorine,
it will damage the refrigeranl oil.
! Do not use any antioxident sold on the market. It may have an
adverse effect on the refrigerant and compressor oil, resulting in
equipment breakdown.
! Be sure to prevent spatter generated by welding process from
coming in contact with the unit or entering into the unit. It may
damage the drain pan and result in equipment breakdown.
! Do not connect the drain piping directly to sewage pipes that
smell of ammonia. The ammonia in the sewage might enter the
indoor unit through the drain pipes and corrode the heat
exchanger. Keep in mind that it will become the cause of getting
drain pipe blocked if water collects on drain pipe.
! Do not remove the air filter except when cleaning. Unnecessary
handling may damage the filter.
Ԙ ԙ Ԛ
Metal clamp
1 piece
Drain hose
1 piece
Washer for hanging
bracket
8 pieces
Medium sealing pad
2 pieces
ԝLarge sealing pad
ԛ Ԝ
Insulation for fitting
1 each
Ԡ
Ԟfor gas pipe ԟfor liquid pipe Screws for duct
flanges 1 set
Model Decoration panel code
AXSP22 - 36P BYBS32DJW1
Standard type panel
AXSP45, 56P BYBS45DJW1
AXSP71, 90P BYBS71DJW1
AXSP112, 140P BYBS125DJW1
Model
Required
ceiling space
(mm)
Air inlet panel
code
Canvas
connection
code
AXSP22 - 36P
҇465 KTBJ25K36W
KSA-25K36
҇350 not installable
AXSP45, 56P
҇465 KTBJ25K56W
KSA-25K56
҇350 not installable
AXSP71, 90P
҇465 KTBJ25K80W
KSA-25K80
҇350 not installable
AXSP112, 140P
҇465 KTBJ25K160W
KSA-25K160
҇350 not installable
Model Cord No.
Wired type ABRC1P528
Wireless type BRC7E618
Tick 
when
checked
Is the indoor unit fixed firmly?
The unit may drop, vibrate or make noise.
Is the outdoor unit installed properly?
The unit may malfunction or components may burn out.
Is the gas leak test finished?
It may result in insufficient cooling.
Is the unit fully insulated and checked for air leaks?
Condensate water may drip.
Does drainage flow smoothly?
Condensate water may drip.
Does the power supply voltage correspond to that shown on the
name plate?
The unit may malfunction or components may burn out.
Are wiring and piping correct?
The unit may malfunction or components may burn out.
Is the unit safely grounded?
Dangerous at electric leakage.
Is the wiring size according to specifications?
The unit may malfunction or components may burn out.

AXSP22~140P7D
Gas driven heat pump air conditioners
Indoor unit
Installation manual
4
2Items to be checked at time of delivery
Notes to the installer
After the installation work, explain to the customer what system
is installed on the site, and be sure to instruct the customer how
to properly operate the system especially cleaning filters,
operating different functions, and adjusting the temperature by
having them carry out operations while looking at the manual.
IMPORTANT INFORMATION REGARDING THE
REFRIGERANT USED
This product contains fluorinated greenhouse gases covered by the
Kyoto Protocol.
Refrigerant type: R410A
GWP(1) value: 1975
(1) GWP = global warming potential
Periodical inspections for refrigerant leaks may be required
depending on European or local legislation. Please contact your local
dealer for more information.
TRANSPORTING THE INDOOR UNIT
CAUTION
Make sure that the route to the installation site and any
passageways are large enough for the indoor unit to be trans-
ported through.
Leave the unit inside its packaging until you reach the
installation site. Where unpacking is unavoidable, use a sling of
soft material or protective plates together with a rope when
lifting, this to avoid damage or scratches to the unit.
SELECTING INSTALLATION SITE
WARNING
CAUTION
Is nothing blocking the air outlet or inlet of either the indoor or
outdoor units?
It may result in insufficient cooling.
Are refrigerant piping length and additional refrigerant charge
noted down?
The refrigerant charge in the system might not be clear.
Are the air filters fixed properly (when installing with rear duct)?
Maintenance of the air filters can be impossible.
nIs the external static pressure set?
It may result in insufficient cooling or heating.
Tick 
when
checked
Are switch box lid, air filter and suction/discharge grille fixed
firmly?
Did you explain about operations while showing the operation
manual to your customer?
Did you hand the operation manual over to your customer?
Did you explain how to handle and clean the air filter and suction/
discharge grille?
Dis you hand the manual of locally provided parts (if attached)
over to your customer?
NOTE The items with “ Warning” and “ Caution”
marks in the manual are the items regarding
possibilities for bodily injury and material damage in
addition to the general usage of the product.
Accordingly, it is necessary that you make a full
explanation about the described contents and also ask
your customers to read the manual.
Be sure to handle with care for transporting the unit.
Some of the units are covered with the PP band for
strapping. Be sure not to grab straps when handling.
Tick 
when
checked
Be sure to dispose all of the packing materials after
taking out the unit.
Nails and wooden crates may cause a serious injury from
sticking. Plastic sheet covering the unit may result in an
asphyxia if a child play with it. Tear the plastic sheet before
disposing.
NOTE Do not dispose of any parts necessary for installation
until the installation is complete.
Ask your dealer or qualified personnel to carry out
installation work. Do not try to install the machine yourself
.
Improper installation may result in water leakage, electric
shocks or fire. All field piping must be provided by a licensed
refrigeration technician and must comply with the relevant
local and national codes.
Install the indoor unit on a foundation strong enough to
withstand the weight of the unit.
A foundation of insufficient strength may result in the
equipment falling and causing injuries.
Carry out the specified installation work after taking into
account strong winds, typhoons or earthquakes.
Improper installation work may result in the equipment falling
and causing accidents.
When installing the unit in a small room, take measures
against to keep refrigerant concentration from
exceeding allowable safety limits in the event of
refrigerant leakage.
Excessive refrigerant in a closed ambient can lead to oxygen
deficiency.
Do not install the indoor unit in the following locations:
(a) where a mineral oil mist or an oil spray or vapor is
produced, for example in a kitchen
Plastic parts may deteriorate and fall off or result in
water leakage.
(b) where corrosive gas, such as sulfurous acid gas,
is produced
Corroding copper pipes or soldered parts may result in
refrigerant leakage.
(c) where flammable gases may leak, where there are
carbon fiber or ignitable dust suspensions in the
air, or where volatile flammables such as thinner or
gasoline are handled.
Operating the unit in such conditions may result in fire.
Locate the indoor and outdoor units, power supply
wiring and connecting wires at least 1 meter away from
televisions or radios in order to prevent image
interference or noise.
Depending on the radio waves, a distance of 1 meter may
not be sufficient enough to eliminate the noise.

Installation manual
5
AXSP22~140P7D
Gas driven heat pump air conditioners
Indoor unit
IMPORTANT REMINDER
Do not install accessories on the casing directly. Drilling holes in
the casing may damage electrical wires and consequently cause
fire.
1Select an installation site where the following conditions are
fulfilled and that meets your customer's approval.
! Where optimum air distribution can be ensured.
! Where nothing blocks air passage.
! Where condensate water can be properly drained.
! Where the foundation is strong enough to bear the indoor
unit weight.
! Where the false ceiling is not noticeably on an incline.
! Where there is no risk of flammable gases leaking.
! Where sufficient clearance for maintenance and service can
be ensured.
! Where piping between indoor and outdoor units is possible
within the allowable limit. Refer to the installation manual of
the outdoor unit.
2Ensure that a protective guard is installed on air suction and air
outlet side to prevent that the fan blades or heat exchanger be
touched.
The protection must comply with relevant European and national
regulations.
3Use suspension bolts for installation. Check whether the ceiling
is strong enough to support the weight of the indoor unit. If there
is a risk, reinforce the ceiling before installing the unit.
PREPARATIONS BEFORE INSTALLATION
1Make sure the relation of ceiling opening to unit and suspension
bolt position.
For installation, following 6 patterns can be selected as a
standard. Choose one of the possibilities as listed further.
For other installation than standard installation, contact your
AISIN dealer for details.
! Remote controller (wireless kit) transmitting distance can result
shorter than expected in rooms with electronic fluorescent lamps.
(inverter or rapid start types)
Install the indoor unit as far away from fluorescent lamps as
possible.
! Electromagnetic waves may disturb the operation of the control
system and result in a malfunction of the unit. Do not install the
unit near machinery emitting electromagnetic waves.
! Do not place objects that are susceptible to moisture directly
beneath the indoor or outdoor units. Under certain conditions,
condensation on the main unit or refrigerant pipes, air filter dirt or
drain blockage may cause dripping, resulting in fouling or failure
of the object concerned.
! Be sure not to install the indoor unit into locations where the air
contains high levels of salt such as that near the ocean, where
the voltage fluctuates greatly such as that in a factories. Also in
vehicles and vessels.
NOTE When taking the unit out of the packing or moving
the unit afterwards, hold the rigged 4 slings not to
apply unnecessary force to the unit, especially to
the pipings (refrigerant,drain).
In case of that the temperature and humidity of
above ceiling space exceed 30 deg C and RH
80 %, reinforce the inslation (polyethylene form /
grass wool etc.) of 10 mm or more in thickness by
applying to the unit separately.
҈300
1
5 3
2 7 6
4
1Service space ҈300
2Drain pipe
3Power supply wiring port
4Transmission wiring port
5Maintenance drain outlet
6Gas pipe
7Liquid pipe
Model A (mm) B (mm)
AXSP22 - 36P 550 586
AXSP45, 56P 700 738
AXSP71, 90P 1000 1038
AXSP112, 140P 1400 1438
1Indoor unit
2Pipe
3Suspension bolt pitch (x 4 pcs)
4Suspension bolt pitch distance
1Ceiling surface
2Ceiling opening
3Service access panel (optional accessory)
4Air filter
5Air inlet duct (field supply)
6Duct service opening
7Interchangeable plate
8Air inlet panel (optional accessory)
9Indoor unit (back side)
10 Canvas Connection for air inlet panel (optional accessory)
11 Air filter holding plate with air filter(s)
700
630
A
B
43 2 1
4

AXSP22~140P7D
Gas driven heat pump air conditioners
Indoor unit
Installation manual
6
Standard rear suction
Installation with rear duct and duct service opening
Installation with rear duct, no duct service opening
Mounting the air inlet panel with a canvas connection
Mounting the air inlet panel directly
Bottom suction
NOTE In case of installation with duct, but no duct service
opening, modify the position of the air filters before
installation of the unit.
NOTE When installing an air inlet duct, select fixing screws
that shall stick out maximum 5 mm at the inside of the
flange. This is to protect the air filter from damage
during maintenance of the filter.
680
1 3 442
680
200<45
1 563 42
680
153 42
7
1Remove the air filter(s) at the
outside of the unit
2Remove the interchangeable
plate
3Install the air filter(s) from
the inside of the unit
4Reinstall the
interchangeable plate
1
2
4
3
1Air inlet duct
2Inside of the flange
3Fixing screw
1
2
3
• •5 m
m
Model A (mm)
AXSP22 - 36P 610
AXSP45, 56P 760
AXSP71, 90P 1060
AXSP112, 140P 1460
NOTE The unit can be used with bottom suction by replacing
the interchangeable plate by the air filter holding plate.
1 8 102
180
460
160
(160~300)
425
9
A
1 82
180
460
҈350
9
A
11
11
7

Installation manual
7
AXSP22~140P7D
Gas driven heat pump air conditioners
Indoor unit
2The fan speed for this indoor unit is preset to provide standard
external static pressure.
3Make the ceiling opening needed for installation where
applicable (for existing ceilings.)
! Create the ceiling opening required for installation. From the
side of the opening to the casing outlet, implement the
refrigerant and drain piping and wiring for remote controller
(unnecessary for wireless type) and indoor-outdoor unit
casing outlet. Refer to each piping or wiring section.
! After making an opening in the ceiling, it may be necessary to
reinforce ceiling beams to keep the ceiling level and to
prevent it from vibrating. Consult the builder for details.
4Install the suspension bolts.
Use either a W3/8 or M10 size bolt for the suspension bolt. Use
anchors for existing ceilings, and a sunken insert, sunken
anchors or other field supplied parts for new ceilings to reinforce
the ceiling in order to bear the weight of the unit.
INSTALLATION EXAMPLE
INDOOR UNIT INSTALLATION
WARNING
CAUTION
1Install the indoor unit temporarily.
! Lift the indoor unit"s body, and insert the attachment part on
the hanger bracket to the suspension bolt. Be sure to fix it
securely by using a nut and washer Ԛ from the upper and
lower sides of the hanger bracket.
2Adjust the unit to the right position for installation.
3Adjust the height of the unit.
4Check if the unit is horizontally levelled.
! Check if the unit is levelled at all four corners with a water
level or a water-filled vinyl tube as shown below.
5Tighten the upper nut.
REFRIGERANT PIPING WORK
This equipment use non-flammable refrigerant, R410A exclu-
sively. Be sure to install the unit according to follows:
Use a pipe cutter and flaring tools suitable for the type of
refrigerant.
Apply compressor oil NL10 around the flare portions before
connectiong.
To prevent dust, moisture or other foreign matter from infiltrating
the tube, either pinch the end or cover it with tape.
WARNING
1Anchor
2Ceiling slab
3Long nut or turn-buckle
4Suspension bolt
5Indoor unit
NOTE All the above parts are field supplied.
Perform installation work in accordance with this
installation manual.
Improper installation may result in water leakage, electric
shocks or fire.
Be sure to use only the specified accessories and parts
for installation work.
Failure to use the specified parts may result in water
leakage, electric shocks, fire or the unit falling.
Do not install the unit tilted. The indoor unit is equipped
with a built-in drain pump and float switch.
If the unit is tilted against condensate flow, the float switch
may malfunction and cause water to drip.
NOTE When installing optional accessories (except for
the decoration panel), read also the installation
manual of the optional accessories.
Depending on the field conditions, it may be
easier to install optional accessories before the
indoor unit is installed.
2
1
3
5
4
1Nut
(field supply)
2Washer
(supplied with the unit Ԛ)
3Double nut
(field supply, tighten)
NOTE To ensure they are safely secured, use the supplied
washers, and secure them with a double nut.
1Water level
2Vinyl tube
Ask your dealer or qualified personnel to carry out
installation work. Do not try to install the machine yourself
.
Improper installation may result in water leakage, electric
shocks or fire. All field piping must be provided by a licensed
refrigeration technician and must comply with the relevant
local and national codes.
Do not allow anything other than the designated
refrigerant to get mixed into the refrigerant circuit, such
as air, etc.
Doing so could cause an explosion or a fire.
Never touch the refrigerant leaking from refrigerant
piping connection.
If the refrigerant is put on hands, it may cause a frost bite.
2
1
2
3
2
2
1

AXSP22~140P7D
Gas driven heat pump air conditioners
Indoor unit
Installation manual
8
IMPORTANT REMINDER
The outdoor unit is charged with refrigerant.
Be sure to use both a spanner and torque wrench together when
connecting or disconnecting pipes to/from the unit.
When connecting the flare nut, coat the flare both with
compressor oil NL10 and initially tighten by hand 3 or 4 turns
before tightening firmly.
Coat here with compressor oil NL10.
WARNING
Refer to Table 1 for the dimensions of flare nut spaces and the
appropriate tightening torque. (Overtightening may damage ythe
flare and cause leaks.)
Table 1
Use Table 2 as a reference if a torque wrench is not available.
As tightening the flare nut with the wrench, there is the position
where the torque will suddenly increase. Further tighten the nut
to the angle as shown on Table 2 from that position.
Table 2
Check the pipe connector for gas leaks.
WARNING
After checking the pipe-connection for gas leakage, insulate the
liquid and gas piping according to the following figure. Be sure to
place the joint of insulator upwardly faced on the gas line piping.
PIPING INSULATION PROCEDURE
CAUTION
If any refrigerant gas leaks while working on the unit,
ventilate the area throughly right away.
Toxic gas may be produced if the refrigerant gas comes into
contact with fire.
! All field piping must be provided by a licensed refrigeration
technician and must comply with the relevant local and national
codes.
NOTE For refrigerant piping of outdoor unit, refer to the
installation manual attached to the outdoor unit.
Execute heat insulation work completely on both
sides of the gas piping and the liquid piping to
prevent a water leakage. When using a heat
pump, the temperature of the gas piping can
reach up to approximately 120 deg C, use heat
insulation which is sufficiently heat resistant.
Reinforce the heat insulation depending on the
field conditions. Condensation may form on the
surface of the insulating material.
Be sure to check the type of R410A refrigerant to
be used before installing the unit. Using an incor-
rect refrigerant will prevent normal operation of
the unit.
1Torque wrench
2Spanner
3Piping union
4Flare nut
Tighten the flare with double wrenches and use a torque
wrench to check that the tightening torque is proper.
If the torque is not proper, a joint broken by over tightening
or a joint loose by under tightening could allow refrigerant to
leak and cause a shortage of oxygen.
Pipe
gauge Tightening torque Flare dimension A (mm) Flare shape
Ø6.4
(1/4”)
14.2 - 17.2 N!m
(144 - 176 kgf!cm) 8.7 - 9.1
Ø9.5
(3/8”)
32.7 - 39.9 N!m
(333 - 407 kgf!cm) 12.8 - 13.2
Ø12.7
(1/2”)
49.5 - 60.3 N!m
(504 - 616 kgf!cm) 16.2 - 16.6
Ø15.9
(5/8”)
61.8 - 75.4 N!m
(630 - 770 kgf!cm) 19.3 - 19.7
1 2
4
3
R=0.4~0
.8
452
90
2
A
Pipe size Further tightening angle (°) Recommended arm
length of tool (mm)
Ø6.4 (1/4”) 60 - 90 ± 150
Ø9.5 (3/8”) 60 - 90 ± 200
Ø12.7 (1/2”) 30 - 90 ± 250
Ø15.9 (5/8”) 30 - 90 ± 300
NOTE The flare nut used must be those included with the
main body. Failure to do so cause refrigerant to leak.
After completing the installation work, check that the
refrigerant gas does not leak.
Toxic gas may be produced if the refrigerant gas leaks into
the room and comes into contact with a source of fire, such
as a fan heater, stove or cooker.
Gas piping Liquid piping
1Piping insulation material (field supply)
2Flare nut connection
3Insulation for fitting of liquid/gas line
(supplied with the unit Ԟ,ԟ)
4Piping insulation material (main unit side)
5Main unit
6Clamp (field supply)
7Medium sealing pad for gas piping (supplied with the unit ԛ)
Medium sealing pad for liquid piping (supplied with the unit Ԝ)
ATurn seams up
BAttach to base
CTighten the part other than the piping insulation material
Use 2 clamps per insulation
DWrap over from the base of the unit to the top of the flare nut
connection
Be sure to insulate any field piping all the way to the
piping connection inside the unit.
Any exposed piping may cause condensation or burns if
touched.
A B
D
C
7
1 23 4 56 6
A BC
1 23 4 56 6
D7

Installation manual
9
AXSP22~140P7D
Gas driven heat pump air conditioners
Indoor unit
Caution for brazing
Be sure to carry out a nitrogen blow when brazing.
Brazing without carrying out nitrogen replacement or releasing
nitrogen into the piping will create large quantities of oxidized
film on the inside of the pipes, adversely affecting valves and
compressors in the refrigerating system and preventing normal
operation.
When brazing the refrigerant pipng, only begin brazing after
having carried out nitrogen substitution (Note 1) or while flushing
the inside of piping with nitrogen gas (Note 2). Once this is done,
connect the indoor unit with a flared or a flanged connection.
IMPORTANT REMINDER
DRAIN PIPING WORK
WARNING
CAUTION
IMPORTANT REMINDER
Rig the drain piping as shown in figure and take measures against
condensation. Improperly rigged piping could lead to leaks and
eventually wet furniture and belongings.
Install the drain pipes.
! Keep pipe size equal to or greater than that of the connecting
pipe (vinyl pipe of 25 mm nominal diameter and 32 mm outer
diameter).
! Keep piping as short as possible and slope it downwards of
1:100 so that air may not remain trapped inside the pipe.
! Install hanging bars every 1 to 1.5 m as shown in figure so that
the piping does not bend.
! Push the drain hose ԙas far as possible over the drain socket.
• Tighten the metal clamp Ԙuntil the screw head is less than 4 mm
from the metal clamp part as indicated in the illustration.
• Wrap the large sealing pad over the metal clamp and drain hose
to insulate and fix it with clamps.
• Insulate the complete drain piping inside the building (field
supply).
• Do not use flux when brazing refrigerant piping. Therefore, use
the phosphor copper brazing filter metal (BCup-2: JIS Z 3264/B-
Cu93P-710/795/: ISO 3677) which does not require flux.
Flux has extremely harmful influence on refrigerant pipings. For
instance, if the chlorine based flux is used, it will cause pipe
corrosion or, in particular, if the flux contains fluorine, it will
damage the refrigeranl oil.
• Do not use any antioxident sold on the market. It may have an
adverse effect on the refrigerant and compressor oil, resulting in
equipment breakdown.
• Be sure to prevent spatter generated by welding process from
coming in contact with the unit or entering into the unit. It may
damage the drain pan and result in equipment breakdown.
1Refrigerant piping
2Part to be brazed
3Taping
4Hands valve
5Pressure reducing valve
6Nitrogen gas
NOTE Note 1 :Refer to the installation manual attached to the
outdoor unit for details about how to carry out
nitrogen substitution.
Note 2 :Nitrogen gas flow should be kept at 0.02 Mpa
with a pressure reducing valve when brazing
with flushing nitrogen gas.
Do not route the drain piping directly into to a location
where corrosive gas, such as sulfurous acid gas, could
potentially be generated.
Corrosive gas could enter the indoor and could cause a gas
poisoning or a shortage of oxygen.
While following the instructions in this installation
manual, install drain piping in order to ensure proper
drainage and insulate piping in order to prevent
condensation.
Improper drain piping may result in water leakage and
property damage to furniture and belongings.
1 2 3 4 5
6
6
• Do not connect the drain piping directly to sewage pipes that
smell of ammonia. The ammonia in the sewage might enter the
indoor unit through the drain pipes and corrode the heat
exchanger. Keep in mind that it will become the cause of getting
drain pipe blocked if water collects on drain pipe.
1Hanging bar
NOTE If unifying multiple drain pipes, install the pipes as
shown in following figure. Select converging drain
pipes whose gauge is suitable for the operating
capacity of the unit.
1Drain socket (attached to the unit)
2Drain hose (supplied with the unit ԙ)
3Metal clamp (supplied with the unit Ԙ)
4Drain piping (field supply)
5Large sealing pad (supplied with the unit ԝ)
1-1.5 m 1
1T-joint converging drain pipes
2Slope downwards at a gradient of at least
1:100
1
҈100 mm
2
1 23 5
҇4 mm
3
5
2
A
A'
A-A' 1
4
A
A'

AXSP22~140P7D
Gas driven heat pump air conditioners
Indoor unit
Installation manual
10
If the drain hose cannot be sufficiently set on a slope, fit the hose
with drain raising pipingfield supply.
Precautions
Install the drain raising pipes at a height of less than 625 mm.
Install the drain raising pipes at a right angle to the indoor unit
and no more than 300 mm from the unit.
To prevent air bubbles, install the drain hose level or slightly
tilted up ( ҇75 mm).
HOW TO PERFORM PIPING
1Connect the drain hose ԙto the drain raising pipes, and insulate
them.
2Connect the drain hose to the drain outlet on the indoor unit, and
tighten it with the metal clamp Ԙ.
3Wrap the heat insulation (field supply) over the metal clamp Ԙ
and drain hose ԙto insulate.
Testing of drain piping
After piping work is finished, check if drainage flows smoothly.
! Make sure that the drain hose is firmly connected.
! Open the water inlet lid, add approximately 1 liter of water
gradually to check the drainage flow.
METHOD OF ADDING WATER
If adding water from the charge inlet at the fan casing, be sure to put
the lid back in its original position.
First perform electric wiring work as instructed in "Electric wiring
work" on page 11 and how to set the remote controller as explained
in "Wiring example and how to set the remote controller" on page 12.
When electric wiring work is finished
Check drainage flow during the cooling operation, explained in "Test
operation" on page 16.
When electric wiring work is not finished
1. Remove the switch box cover and connect the single-phase power
supply and the remote controller to the terminals. (Refer to "Electric
wiring work" on page 11 for switch box attachment/detachment and
wiring work.)
2. Next, press the inspection/test operation button on the remote
controller. The unit will engage the test operation mode. Press the
operation mode selector button until selecting fan operation
. Then, press the on/off button . The indoor unit fan and
drain pump will start up. Check that the water has drained from the
unit. Note that the fan also starts rotating. Press to go back
to the first mode.
WARNING
1Ceiling slab
2Hanging bar
3Adjustable range
4Drain raising pipe (field supply)
5Drain hose (supplied with the unit ԙ)
6Metal clamp (supplied with the unit Ԙ)
NOTE Be sure to level or slope upward the drain hose so
that air may not remain trapped inside of the drain
hose. If air remains trapped, abnormal sound may
occur by backflow of drainage when a drain pump
stops.
The incline of attached drain hose should be
75 mm or less so that the drain socket does not
have to withstand additional force.
To ensure a downward slope of 1:100, install
hanging bars every 1 to 1.5 m.
Installation A
Rear suction installation 231
When canvas duct is installed 350 - 530
When air inlet panel is directly installed 231
5
0~75
625
A
҇300 mm 1~1.5 m
2
3
1
4
56
҇
1Water inlet
2Portable pump
3Water inlet lid
4Bucket (adding water from water inlet)
5Drain outlet for maintenance (with rubber drain plug)
6Refrigerant pipes
Do not touch the drain pump during the drainage flow
testing.
Failure to do so may result in electric shocks.
5 41 3
26
TEST
TEST

Installation manual
11
AXSP22~140P7D
Gas driven heat pump air conditioners
Indoor unit
ELECTRIC WIRING WORK
General instructions
All field supplied parts and materials and electric works must
conform to local codes.
Use copper wire only.
Follow the "Wiring diagram" attached to the unit body to wire the
outdoor unit, indoor units and the remote controller. For details
on hooking up the remote controller, refer to the installation
manual of the remote controller.
All wiring must be performed by an authorized electrician.
A circuit breaker capable of shutting down power supply to the
entire system must be installed.
A main switch or other means for disconnection, having a
contact separation in all poles, must be incorporated in the fixed
wiring in accordance with relevant local and national legislation.
Note that the operation will restart automatically if the main
power supply is turned off and then turned back on again.
This system consists of multiple indoor units. Mark each indoor
unit as unit A, unit B..., and be sure the terminal board wiring to
each outdoor unit is properly matched. If wiring and piping
between the outdoor unit and an indoor unit are mismatched, the
system may cause a malfunction.
Make sure electrical wires are stripped
equally.
WARNING
Electrical characteristics
MCA: Min. circuit Amps (A)
MFA: Max. Fuse Amps (A)
Specifications for field supplied fuses and wire
NOTE Be sure not to remove the drain pipe plug. Water might
leak out.
The drain outlet is only used to discharge water if the drain
pump is not used or before maintenance. Gently put in and
out the drain plug. Excessive force may deform the drain
socket of the drain pan.
Pulling out the plug
Do not wiggle the plug up and down
Pushing in the plug
Set the plug and push it by using a Philips screwdriver
Make sure that a separate power supply circuit is
provided for this unit and that all electrical work is
carried out by qualified personnel according to local
laws and regulations and this installation manual.
An insufficient power supply capacity or improper electrical
construction may lead to electric shocks or fire.
1
1Drain plug
1
2
1Drain plug
2Philips screwdriver
Be sure to install a secure earth connection.
Do not earth the unit to the followings:
(a) gas pipes: might cause explosions or fire if gas leaks.
(b) telephone ground wires or lightning rods: might
cause abnormally high electric potential in the ground
during lightning storms.
(c) plumbing pipes: no grounding effect if hard vinyl
piping is used.
Be sure to install an earth leakage breaker.
Failure to do so may result in electric shocks, or fire.
Never turn on the unit before finishing the installation
work.
Failre to do so could cause electrical shock or damage to the
indoor unit.
power supply
Model Hz Volts Voltage
range MCA MFA
AXSP22P
50/60 220 - 240/220 r10%
0.4
16 A
AXSP28P 0.4
AXSP36P 0.4
AXSP45P 1.2
AXSP56P 1.2
AXSP71P 1.1
AXSP90P 1.3
AXSP112P 1.6
AXSP140P 2.1
NOTE For details, contact your AISIN dealer for the electrical
data.
Power supply wiring
Model Field fuses Wire Size
AXSP22 - 140P 16 A H05VV - U3G Local codes
Remote controller wiring
and Transmission wiring
Model Wire Size
AXSP22 - 140P Sheathed wire (2 core) 0.75 - 1.25 mm2
NOTE For details, refer to the chapter "Wiring example"
on page 13.
Allowable length of transmission wiring between
indoor and outdoor units, and between the indoor
unit and the remote controller is as follows:
! Outdoor unit - indoor unit: max. 1000 m
(total wiring length: 2000 m)
! Indoor unit - remote controller: max 500 m

AXSP22~140P7D
Gas driven heat pump air conditioners
Indoor unit
Installation manual
12
WIRING EXAMPLE AND HOW TO SET THE
REMOTE CONTROLLER
WARNING
CAUTION
How to connect wiring
Remove the switch box cover and connect the single-phase power
supply and the remote controller to the terminals as shown below.
Power supply wiring
Hold the swich box lid and loosen the anchoring screws
(x 2 pcs), remove the switch box lid and connect the wires to the
power supply terminal board inside. While doing this, pull the
wires inside through the power supply wiring port and clamp the
wires with the plastic clamp.
Unit wiring and remote controller wiring
Hold the swich box lid and loosen the anchoring screws
(x 2 pcs), remove the switch box lid and pull the wires inside
through the transmission wiring port and connect to the terminal
board for unit transmission wiring. After the connection, securely
fix wires with plastic clamp.
Precautions
1Use round a crimp-style terminal for connecting wires to the
power supply terminal board.
If unavoidable, observe the notes mentioned below when wiring
to the power supply terminal board.
! Do not connect wires of different gauge to the same power
supply terminal. (Looseness in the connection may cause
overheating.)
! When connecting wires of the same gauge, connect them
according to the figure.
2Keep total current of crossover wiring between indoor units less
than 12 A. Branch the line outside the terminal board of the unit
in accordance with electrical equipment standards, when using
two power wiring of a gauge greater than 2 mm2(Ø1.6).
The branch must be sheathed in order to provide an equal or
greater degree of insulation as power supply wiring itself.
3Do not connect wires of different gauge to the same grounding
terminal. Looseness in the connection may deteriorate the
protection.
When clamping the wirings, be sure to clamp wires
appropriately not to apply any excessive power to the
wire connections.
Improper clamping could damage the wires and may result
in electric shocks, fire or the terminals overheating.
Make sure that the remote controller wiring, and the
transmission wiring between the unis, and other
electrical wiring do not pass through the same locations
outside the unit separating as followings:
- Outside the unit; at least 50 mm
- Inside the unit; at least 25 mm
Failure to do so could cause an electrical noise (external
static) and result in mistaken operation or breakage.
When wiring the power supply and connecting the
remote controller wiring and transmission wiring,
position the wires so that the switch box lid can be
securely fastened. When attaching the service lid, make
sure no wirings get caught in the edges.
Improper positioning of the switch box lid may result in
electric shocks, fire or the terminals overheating.
Never connect the power supply wiring to the terminal
board for transmission wiring.
This mistake could damage the entire system.
Locate the indoor and outdoor units, power supply
wiring and connecting wires at least 1 meter away from
televisions or radios in order to prevent image
interference or noise.
Depending on the radio waves, a distance of 1 meter may
not be sufficient enough to eliminate the noise.
1Switch box cover
2Transmission wiring port
3Power supply wiring port
4Wiring diagram
5Switch box
1
23
4
5
6Plastic clamp (field supply)
7Remote controller wiring
8Terminal board for unit transmission wiring
9Power supply wiring
10 Indoor PC board 1
11 Power supply terminal board
12 Transmission wiring between units
13 Indoor PC board 2
14 Indoor PC board 3 (only for 71 - 140P units)
1Round-crimp style terminal
2Attach insulation sleeve
3Electric wire
L N
811 6
13
9
6
5
10
14
7 12
3
1
2

Installation manual
13
AXSP22~140P7D
Gas driven heat pump air conditioners
Indoor unit
4For the remote controller wiring, refer to the installation manual
of the remote controller supplied with the remote controller.
5Use only specified wires and tightly connect wires to the
terminals. Be careful that wires do not place external stress on
the terminals. Keep wiring in neat order so that they do not
obstruct other equipment such as popping open the switch box
cover. Make sure the cover closes tight. Incomplete connections
could result in overheating, and in the worse case, electric shock
or fire.
6Use the correct driver for tightening the terminal screws. If the
blade is too small, the head of the screw will not be properly
tightened. Refer to the table below for the tightening torque of
the terminal screws.
7After all wiring connections are done, fill in any gaps in the
casing wiring holes with putty or insulation material (field supply)
to prevent small animals or dirt from entering the unit from
outside and causing short circuits in the switch box.
WIRING EXAMPLE
WARNING
Fit the power supply wiring of each unit with a switch and fuse as
shown below.
Complete system example (3 systems)
1. When using 1 remote controller for 1 indoor unit.
(Normal operation)
2. For group control or use with 2 remote controllers
3. When including BS unit
Terminal Tightening torque (N•m)
Remote controller, Transmission wiring and
forced off terminal block (6P) 0.79 - 0.97
Power supply terminal block (2P) 1.18 - 1.44
Ground terminal 1.44 - 1.94
Be sure to install a secure earth connection.
Do not earth the unit to the followings:
(a) gas pipes: might cause explosions or fire if gas leaks.
(b) telephone ground wires or lightning rods: might
cause abnormally high electric potential in the ground
during lightning storms.
(c) plumbing pipes: no grounding effect if hard vinyl
piping is used.
1Power supply
2Main switch
3Power supply wiring
4Transmission wiring
5Switch
6Fuse
7BS unit (only for heat recovery system)
8Indoor unit
9Remote controller
1
2
5
6
3
4
7
8
9
NOTE It is not necessary to designate indoor unit address
when using group control. The address is
automatically set when the power is activated.
1Outdoor unit
2Indoor unit
3Remote controller (optional accessories)
4Most downstream indoor unit
5For use with 2 remote controllers
6BS unit (only for heat recovery system)
L N
L N
IN/D OUT/D
F
1 F 2 F 1 F 2
Control box
L N
L N
P 1 P 2
P 1 P 2
P 1 P 2
P 1 P 2
P 1 P 2
F 1 F 2 T 1 T 2
P 1 P 2 F 1 F 2 T 1 T 2
P 1 P 2 F 1 F 2 T 1 T 2
P 1 P 2 F 1 F 2 T 1 T 2
3
1
4
2
L N
L N
L N
L N
1
L N
IN/D OUT/D
F
1 F 2 F 1 F 2
Control box
P 1 P 2
P 1 P 2
F 1 F 2 T 1 T 2
P 1 P 2 F 1 F 2 T 1 T 2
P 1 P 2 F 1 F 2 T 1 T 2
P 1 P 2 F 1 F 2 T 1 T 2
P 1 P 2 P 1 P 2
2
5
3
L N
L N
L N
L N
4
IN/D OUT/D
F1F2F1F2
Control box
IN/DOUT/D
F1F2F1F2
Control box
L N
P 1 P 2
P 1 P 2 F 1 F 2 T 1 T 2
1
3
6
2
L N

AXSP22~140P7D
Gas driven heat pump air conditioners
Indoor unit
Installation manual
14
When using 2 Remote Controllers (Controlling 1 indoor unit by
2 remote controllers)
When using 2 remote controllers, one must be set to "MAIN" and
the other to "SUB".
Main/sub changeover
1. Insert a wedge-head screwdriver into the recess between the upper
and lower part of the remote controller and, working from the 2
positions, pry off the upper part.
! The remote controller PC board is attached to the upper part of
the remote controller.
2. Turn the main/sub changeover switch on one of the two remote
controller PC boards to "S".
! Leave the switch of the other remote controller set to "M".
Computerised control (forced off and on/off operation)
1. Wire specifications and how to perform wiring
! Connect input from outside to terminals T1 and T2 of the terminal
board (remote controller to transmission wiring).
2. Actuation
! The following table explains "forced off" and "on/off operations" in
response to input A.
3. How to select forced off and on/off operation
! To enable forced off and on/off operation, field setting must be
preliminary performed. Refer to following "Field setting" on page
14.
Centralized control
For centralized control, it is necessary to designate the group
No. For details, refer to the manual of each optional controller for
centralized control.
INSTALLATION OF THE DECORATION PANEL
When performing a test operation without attaching a panel,
refer to "Field setting" on page 14 and "" on page 15 first.
Refer to the installation manual attached to the decoration
panel.
After installing the decoration panel, ensure that there is no
space between the unit body and decoration panel. Otherwise
air may leak through the gap and cause dewdrop.
FIELD SETTING
WARNING
Field setting must be made on the remote controller in function of the
installation condition.
Make sure that the service lids are closed on the indoor and
outdoor units.
Setting can be made by changing the "Mode number", "First
code No." and "Second code No."
For setting and operation, refer to the "Field settings" in the
installation manual of the remote controller
EXAMPLE: When setting forced on and on/off operation
! Turn the power on and then use the remote controller to select
operation.
! Set the remote controller to the field set mode. For details, refer
to the chapter #How to set in the field# in the installation manual
attached to the remote controller.
! When in the field setting mode, select mode No.12, then set the
first code No. to ‘1’. Then set seconde code No. to ‘01’ for forced
off and to ‘02’ for on/off operation.
NOTE A single switch can be used to supply power to
units on the same system. However, branch
switches and branch circuit breakers must be
selected carefully.
For a group control remote controller, choose the
remote controller that suits the indoor unit which
has the most functions.
1Remote controller PC board
2Factory setting
3Only one remote controller needs to be changed if factory
settings have remained untouched.
Wire specification Sheathed vinyl cord or cable (2 wire)
Gauge 0.75 - 1.25 mm2
Length Max. 100 m
External terminal Contact that can ensure the minimum
applicable load of 15 VDC, 1 mA
Input A1
S
M
S
S
M
1
2
3
F2 T1 T2
FORCED
OFF
1
Forced off On/off operation
Input "on" stops operation input off Âon: turns on the unit
(impossible by remote controllers)
Input "off" enables control input on Âoff: turns off the unit by
remote controller
When performing field settings or test operation without
attaching the decoration panel, do not touch the drain
pump.
This may cause electric shock.

Installation manual
15
AXSP22~140P7D
Gas driven heat pump air conditioners
Indoor unit
Summary of field settings
EXTERNAL STATIC PRESSURE SETTINGS
Settings for external static pressure can be achieved in 2 ways:
Using the airflow automatic adjustment function
Airflow automatic adjustment is the volume of blow-off air that
has been automatically adjusted to the rated quantity.
1Make sure the test run is done with a dry coil.
If the coil is not dry, run the unit for 2 hours with fan only to dry
the coil.
2Check if the power supply wiring to the air conditioning unit is
completed along with the duct installation.
If a closing damper is installed in the air conditioning unit, make
sure that it is open.
Also check if the air filter is properly attached into the air
passage on the air suction side of the air conditioning unit.
3If there is more than one air inlet and outlet, adjust the dampers
so that the airflow rate of each air inlet and outlet is conform with
the designed airflow rate.
Make sure the air conditioning unit is in fan operation mode.
Press and set the airflow adjustment button on the remote
controller to change the airflow rate to H or L.
4Setting the airflow automatic adjustment settings.
When the air conditioning unit is running in fan operation mode
perform the next steps:
- stop the air conditioning unit,
- go to field setting mode,
- select mode No. 21 (or 11 in case of group setting),
- set the first code No. to "7",
- set the second code No. to "03".
Return to normal operating mode after setting these settings and
press the ON/OFF operation button. The operation lamp will
light up and the air conditioning unit will start the fan operation
for airflow automatic adjustment.
After 1 to 8 minutes, the air conditioning unit stops operating
automatically when the fan operation for airflow automatic
adjustment has been carried out, the operation lamp will be off.
5When the air conditioning unit has stopped, check on an indoor
unit if the second code No. of mode No. 21 is set to "02".
If the air conditioning unit does not stop operating or the second
code No. is not "02", repeat step 4.
If the outdoor unit is not turned on, the display on the remote
controller will show "U4" or "UH" (refer to "Test operation" on
page 16). However, you can continue setting this function
because these messages are only applicable to outdoor units.
After setting this function, be sure to turn on the outdoor unit
before performing the test operation on the outdoor unit.
If any other error display occurs on the display of the remote
controller, refer to "Test operation" on page 16 and the operation
manual of the outdoor unit. Check the defective point.
1Second code No.
2Mode No.
3First code No.
4Field set mode
Mode
No.
(Note 1)
First
code
No.
Description of setting
Second code No. (Note 2)
01 02 03 04
10
(20)
0
Filter contamination
- Heavy/Light
(Setting of filter sign
display interval for
cleaning.) (Setting to
reduce displaying
period to half when
filter contamination
is high.)
Ultra-long-
life filter
Light
±10,000 hrs.
Heavy
±5,000 hrs.
— —
Long-life
filter ±2,500 hrs. ±1,250 hrs.
Standard
filter ±200 hrs. ±100 hrs.
2
Thermostat sensor selection
Use both the
unit sensor (or
remote sensor if
installed) AND
the remote
controller
sensor.
(See note 5+6)
Use unit sensor
only (or remote
sensor if
installed).
(See note 5+6)
— —
3
Display of air filter cleaning sign
( to be set when not setting filter
cleaning sign)
Display Do not display — —
5
Information to I-manager, I-
touch controller
Only unit sensor
value (or remote
sensor value if
installed).
Sensor value as
set by 10-2-0X
or 10-6-0X.
— —
6
Thermostat sensor in group
control
Use unit sensor
only (or remote
sensor if
installed).
(See note 6)
Use both the
unit senor (or
remote sensor if
installed) AND
the remote
controller
sensor. (See
note 4+5+6)
— —
12
(22)
0
Output signal X1-X2 of the
optional KRP1B PCB kit
Thermostat-on +
compressor run — Operation Mal- function
1
ON/OFF input from outside
(T1/T2 input) = Setting for when
forced ON/OFF is to be
operated from outside.
Forced OFF ON/OFF
operation — —
3
Fan setting during thermostat
OFF at heating operation LL Set speed OFF (See note 3) —
4
Differential automatic
changeover 0°C 1°C 2°C
3°C
(See
note 7)
5
Auto-restart after power failure Disabled Enabled — —
15
(25) 3
Drain pump operation +
humidifier interlock Not equipped Equipped — —
Note 1 : Setting is carried out in the group mode, however, if the mode number inside parentheses is selected,
indoor units can also be set individually.
Note 2 : Factory settings of the Second code No. are marked in grey backgrounds.
Note 3 : Only use in combination with optional remote sensor or when setting 10-2-03 is used.
Note 4 : If group control is selected and remote controller sensor is to be used, then set 10-6-02 & 10-2-03.
Note 5 : If setting 10-6-02 + 10-2-01 or 10-2-02 or 10-2-03 are set at the same time, then setting 10-2-01,
10-2-02 or 10-2-03 have priority.
Note 6 : If setting 10-6-01 + 10-2-01 or 10-2-02 or 10-2-03 are set at the same time, then setting for group
connection, 10-6-01 has priority and for individual connection, 10-2-01, 10-2-02 or 10-2-03 have
priority.
Note 7 : More settings for “Differential automatic changeover” function temperatures are:
Second code No.
05 4°C
06 5°C
07 6°C
08 7°C
SETTING
21
3
4
NOTE Do not adjust the dampers during fan operation for
airflow automatic adjustment.
Mode
No.
First
code No.
Second
code No. Setting content
11 (21) 7
01 Airflow adjustment is OFF
02 Completion of airflow adjustment
03 Start of airflow adjustment

AXSP22~140P7D
Gas driven heat pump air conditioners
Indoor unit
Installation manual
16
Using the remote controller
Check on an indoor unit if the second code of mode No. 21 is set to
"01" (= factory setting). Change the second code according to the
external static pressure of the duct to be connected as shown in
table 2.
Table 2
TEST OPERATION
WARNING
Refer to the installation manual of the outdoor unit.
The operation lamp of the remote controller will flash when an
error occurs. Check the error code on the liquid crystal display to
identify the trouble.
In case something is wrong with the unit and it does not operate,
refer to the malfunction diagnosis label attached to the unit.
If any of the items in the following table are displayed, there may
be a problem with the wiring or power, so double-check the
wiring.
NOTES
NOTE If there is no change after airflow adjustment in the
ventilation paths, be sure to perform setting the
automatic airflow adjustment again.
Contact your dealer if there is no change after
performing airflow adjustment in the ventilation
paths, after performing the test operation of the
outdoor unit or when the air conditioning unit is
moved to another location.
If booster fans, an outdoor air processing unit or
heat recovery system via duct are used, do not use
automatic airflow adjustment control with a remote
controller.
If the ventilation paths have been changed,
perform the setting of the airflow automatic
adjustment again as described above from step 3
onwards.
NOTE The second code No. is set to "03" by default.
Mode
No.
First
code
No.
Second
code
No.
External static pressure (Pa)
AXSP
20 25 32 40 50 63 80 100 125
13
(23) 6
03 30 30 30 30 30 30 40 40 50
04 35 35 35 35 35 40 45 50 55
05 40 40 40 40 40 50 50 60 60
06 45 45 45 45 45 60 60 70 70
07 50 50 50 50 50 70 70 80 80
08 55 55 55 60 60 80 80 90 90
09 60 60 60 70 70 90 90 100 100
10 65 65 65 80 80 100 100 110 110
11 70 70 70 90 90 — — 120 120
12 — — — 100 100 — — — —
When performing field settings or test operation without
attaching the decoration panel, do not touch the drain
pump.
This may cause electric shock.
Be sure to stop operation and turn the power switch off
before touching the electrical parts.
Failure to do so could result in an electrical shock or unit
malfunction.
Do not touch the switch with wet hands.
This may cause electric shock.
Error code Meaning
A8 Error in power supply to indoor unit
C1 Transmission error between fan driver PCB and controller
PCB of the indoor unit
C6 Improper combination of fan driver PCB of the indoor unit or
setting failure in control PCB type
U3 Test operation of the indoor unit has not been finished
Remote control display Content
“Concentrated Management“
is lit up
$ There is a short circuit at the T1,T2
terminals for #forced off% function
#U4# is lit up
#UH# is lit up
$ The outdoor unit power is OFF
$ The outdoor unit has not been wired for
power supply
$ Incorrect wiring of the transmission
wiring and/or #forced off# wiring
$ Disconnected transmission wiring
No display
$ The indoor unit power is OFF
$ The indoor unit has not been wired for
power supply
$ Incorrect wiring of the remote controller
wiring and/or the #forced off# wiring
$ Disconnected remote controller wiring

Installation manual
17
AXSP22~140P7D
Gas driven heat pump air conditioners
Indoor unit
WIRING DIAGRAM
33H ........................ FLOAT SWITCH
A1P........................ PRINTED CIRCUIT BOARD
A2P........................ TERMINAL BOARD
C1R ....................... CAPACITOR (FAN)
F1U........................ FUSE (250 V/10 A)
F2U........................ FIELD FUSE
HAP ....................... LIGHT EMITTING DIODE (SERVICE MONITOR - GREEN)
M1F ....................... MOTOR (FAN)
M1P ....................... MOTOR (DRAIN PUMP)
Q2E ....................... EARTH LEAK DETECTOR
R1T ........................ THERMISTOR (AIR)
R2T,R3T ................ THERMISTOR (REFRIGERANT)
RyF1-3................... MAGNETIC RELAY (FAN)
RyP........................ MAGNETIC RELAY (DRAIN PUMP)
X1M ....................... TERMINAL STRIP (POWER)
X2M ....................... TERMINAL STRIP (CONTROL)
T1R........................ TRANSFORMER (220-240 V/22 V)
Y1E........................ ELECTRONIC EXPANSION CIRCUIT
OPTIONAL PARTS
F3-5U..................... FUSE (250 V/16 A)
J1EH...................... ELECTRIC HEATER
K1R........................ MAGNETIC RELAY (J1EH)
ADAPTOR FOR WIRING
RyC,RyF ................ MAGNETIC RELAY
RyH........................ MAGNETIC RELAY (J1EH)
F1U,F2U ................ FUSE (250 V/5 A)
X1A,X2A ................ CONNECTOR (WIRING ADAPTOR)
X1M ....................... TERMINAL STRIP
CONNECTOR FOR OPTIONAL PARTS
X16A...................... CONNECTOR (WIRING ADAPTOR)
X18A...................... CONNECTOR (WIRING ADAPTOR FOR ELECTRICAL APPENDICES)
: FIELD WIRING BLK : BLACK
: TERMINAL BLU : BLUE
: CONNECTOR ORG : ORANGE
: WIRE CLAMP PNK : PINK
: PROTECTIVE EARTH (SCREW) RED : RED
WHT : WHITE
YLW : YELLOW
,
RECEIVER/DISPLAY UNIT :
WIRED REMOTE CONTROLLER :
SWITCH BOX :
TRANSMISSION WIRING :
INPUT FROM OUTSIDE :
CENTRAL REMOTE CONTROLLER :
NOTE 1. WHEN USING THE CENTRAL REMOTE CONTROLLER, SEE MANUAL FOR CONNECTION TO THE UNIT.
2. X23A IS CONNECTED WHEN THE CENTRAL REMOTE CONTROLLER IS USED.
3. WHEN CONNECTING THE INPUT WIRES FROM OUTSIDE, FORCED OFF OR ON/OFF CONTROL OPERATION CAN BE
SELECTED BY THE REMOTE CONTROLLER. SEE INSTALLATION MANUAL FOR MORE DETAILS.

SAFETY PRECAUTION
The types of injuries and damages that can occur if this units are
improperly installed are divided into and covered
under the “ Warning” and “ Caution” graphics and other
symbols. Follow these instructions carefully.
Meaning of warning, caution and other symbols.
MAINTENANCE
WARNING
CAUTION
How to clean the air filter
IMPORTANT REMINDER
Clean the air filter when the display shows " " (TIME TO CLEAN
AIR FILTER).
Increase the frequency of cleaning if the unit is installed in a room
where the air is extremely contaminated.
(As a yardstick for yourself, consider cleaning the filter once a half
year.)
If the dirt becomes impossible to clean, change the air filter. (Air filter
for exchange is optional.)
1. Open the suction grille. (Only for bottom suction.)
Slide both knobs simultaneously as shown and then pull them
downward.
Aisin Gas Heat Pump Air Conditioner
GHP INDOOR UNIT MAINTENANCE INSTRUCTIONS
Ceiling-mounted Medium ESP Duct Type AXSP (22, 28, 36, 45, 56, 71, 90, 112, 140) P7 W
THOROUGHLY READ THESE INSTRUCTIONS BEFORE AND FOLLOW ALL PROCEDURES DESCRIBED WITHIN.
KEEP THIS MANUAL IN A HANDY PLACE ALONG WITH THE OPERATION MANUAL
ONLY A QUALIFIED SERVICE PERSON IS ALLOWED
TO PERFORM MAINTENANCE.
BEFORE OBTAINING ACCESS TO TERMINAL
DEVICES, ALL POWER SUPPLY CIRCUITS MUST BE
INTERRUPTED.
FOR INSTALLATION OF OPTICAL PARTS, ONLY A
QUALIFIED PERSON IS ALLOWED TO DO SO TO
PREVENT ANY OF WATER LEAKAGE, ELECTRICAL
SHOCK OR FIRE.
WARNING Failure to observe a warning may result in
death or serious injury.
CAUTION Failure to observe a caution may result in
injury or damage to the equipment.
Indicates a prohibited action.
Indicates a necessary action.
Indicates a necessity to install a secure earth
connection.
Be sure to stop operation and turn the power switch off
before cleaning the air conditioner.
Failure do so could result in an electrical shock or injury. To
prevent an injury, make sure that the fan has stopped before
working on the indoor unit.
Do not wash the indoor unit with water or a detergent
spray.
Doing so could cause an electrical shock or a fire.
Be sure to stop operation and turn the power switch off
before cleaning the air conditioner.
Failure do so could result in an electrical shock or injury. To
prevent an injury, make sure that the fan has stopped before
working on the indoor unit.
Do not wash the indoor unit with water or a detergent
spray.
Doing so could cause an electrical shock or a fire.
Do not place anything other than the designated air filter
to the air inlet.
Failure to do so could lower the indoor unit performance and
cause damage to household property from the leakage.
Use a stable tool when cleaning the indoor unit.
Since it is high-place work, use extra cautions for the place
standing at.
1Drain pumping device (built-in) drain water is removed from the
room during cooling.
2Air filter (inside suction grill)
3Air outlet
4Decoration panel (optional), this is where the room air is drawn
in.
5Remote controller
• Do not remove the air filter except when cleaning. Unnecessary
handling may damage the filter.
1
2
3
5
4
AXSP22~140P7D
Gas driven heat pump air conditioners
Indoor unit
Installation manual
18

If chains are present, unhook the chains.
2. Remove the air filters.
Remove the air filters by pulling their cloth upward (rear suction)
or backward (bottom suction).
3. Clean the air filter.
Remove dust from the air filter using vacuum cleaner (A) and
gently rinse them in cool water (B). Do not use detergent or hot
water to avoid filter shrinking or deformation.
When the air filter is very dirty, use soft brush and neutral
detergent.
After cleaning, remove water and dry them in the shade.
4. Fix a air filter.
• Align the two hanger brackets and push the two clips in their
place (pull the cloth if necessary).
• Confirm that four hangers are fixed.
5. Close the air inlet grille by performing step 1 in reverse order..
(Only for bottom suction.)
6. After turning on the power, press FILTER SIGN RESET button.
The "TIME TO CLEAN AIR FILTER" display disappears.
(For details, refer to the operation manual of the outdoor unit.)
How to clean air outlet and outside panels
Clean with soft cloth.
When it is difficult to remove stains, use water of neutral
detergent.
Start up after a long stop
1. Confirm the following:
- Check that the air inlet and outlet are not blocked. Remove
any obstacle.
- Check if the earth is connected.
2. Clean the air filter and outside panels.
- After cleaning the air filter, make sure to attach it.
3. Turn on the main power supply switch.
- The control panel display lights when the power is turned on.
- To protect the unit, turn on the main power switch at least 6
hours before operation.
What to do when stopping the system for a long period
1. Turn on FAN OPERATION for half a day and dry the unit.
- Refer to the operation manual of the outdoor unit.
2. Cut off the power supply.
- When the main power switch is turned on, some wattage is
being consumed even if the system is not operating.
NOTE Do not let go of the suction grille when opening or
closing it. If released, the grille will spring back closed.
(A) Using a vacuum cleaner (B) Washing with water
NOTE Do not wash it with hot water of more than 50°C,
as doing so may result in discoloration and/or
deformation.
Do not expose it to fire, as doing so may result in
burning.
rear suction
bottom suction
NOTE Once cleaning is done be sure to replace the air filter
as it was.
NOTE Do not use gasoline, benzene, thinner, polishing
powder nor liquid insecticide. It may cause
discolouring or warping.
Do not let the indoor unit get wet. It may cause
electric shock or fire.
Clean the air suction grille when it is closed.
rear suction
bottom suction
Installation manual
19
AXSP22~140P7D
Gas driven heat pump air conditioners
Indoor unit