
Outdoor Unit Installation (2)
*1. If the compound pressure gauge pointer swings back, refrigerant may have water content or a loose pipe
joint may exists. Check all pipe joints and retighten nuts as needed, then repeat steps 2) through 4).
• If using additional refrigerant, perform air purging from the refrigerant
pipes and indoor unit using a vacuum pump, then charge additional
refrigerant.
•
Use a hexagonal wrench (3/16 inch (4mm)) to operate the stop valve rod.
• All refrigerant pipe joints should be tightened with a torque wrench at
the specified tightening torque.
5. Purging air and checking gas leakage.
• When piping work is completed, it is necessary to purge the air and check for gas leakage.
1) Do not mix any substance other than the specified refrigerant (R410A) into the refrigeration cycle.
2) When refrigerant gas leaks occur, ventilate the room as soon and as much as possible.
3)
R410A, as well as other refrigerants, should always be recovered and never be released directly into the environment.
4) Use a vacuum pump for R410A exclusively. Using the same vacuum pump for different refrigerants
may damage the vacuum pump or the unit.
1) Connect projection side of charging hose (which comes from gauge manifold) to gas stop valve’s service port.
2) Fully open gauge manifold’s low-pressure valve (Lo) and completely close its high-pressure valve (Hi).
(High-pressure valve subsequently requires no operation.)
3) Do vacuum pumping and make sure that the compound pressure gauge reads – 29.9inHg (–0.1MPa).
(The vacuum pump should run for at least 10 min.)
4) Close gauge manifold’s low-pressure valve (Lo) and stop vacuum pump.
(Keep this state for a few minutes to make sure that the compound pressure gauge pointer does not swing back.)*1
.
5) Remove valve caps from liquid stop valve and gas stop valve.
6) Turn the liquid stop valve’s rod 90 degrees counterclockwise with a hexagonal wrench to open valve.
Close it after 5 seconds, and check for gas leakage.
Using soapy water, check for gas leakage from indoor unit’s flare and outdoor unit’s flare and valve rods.
After the check is complete, wipe all soapy water off.
7) Disconnect charging hose from gas stop valve’s service port, then fully open liquid and gas stop valves.
(Do not attempt to turn valve rod beyond its stop.)
8) Tighten valve caps and service port cap for the liquid and gas stop valves with a torque wrench at the specified
torques.
WARNING
Compound
pressure gauge
Pressure
meter
High-
pressure
valve
Low-pressure
valve
Vacuum pump
adapter
Vacuum pump
Service port
Gas stop
valve
Valve caps
Liquid stop valve
Charging
hoses
Gauge
manifold
3P226011-1A M07B242A
DAIKIN AIR CONDITIONER
• Read these Safety Precautions carefully to ensure correct installation.
• This manual classifies the precautions into DANGER, WARNING and CAUTION.
Be sure to follow all the precautions below: they are all important for ensuring safety.
DANGER
WARNING
CAUTION
Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
Failure to follow any of WARNING is likely to result in such grave consequences as death or serious injury.
Failure to follow any of CAUTION may in some cases result in grave consequences.
• The following safety symbols are used throughout this manual:
Be sure to observe this instruction. Be sure to establish an earth connection. Never attempt.
• After completing installation, test the unit to check for installation errors. Give the user adequate instructions
concerning the use and cleaning of the unit according to the Operation Manual.
Safety Precautions (1)
Two-dimensional bar code
is a code for manufacturing.
• Refrigerant gas is heavier than air and replaces oxygen. A massive leak could lead to oxygen depletion, especially
DANGER
in basements, and an asphyxiation hazard could occur leading to serious injury or death.
• If the refrigerant gas leaks during installation, ventilate the area immediately.
comes in contact with fire such as from a fan heater, stove or cooking device. Exposure to this gas could cause severe injury or death.
• After completing the installation work, check that the refrigerant gas does not leak. Refrigerant gas may produce a toxic gas
if it comes in contact with fire such as from a fan heater, stove or cooking device. Exposure to this gas could cause severe injury or death.
•
Do not ground units to water pipes, telephone wires or lightning rods because incomplete grounding could cause a severe shock hazard
resulting in severe injury or death, and to gas pipes because a gas leak could result in an explosion which could lead to severe injury or death.
•
Safely dispose of the packing materials. Packing materials, such as nails and other metal or wooden parts, may cause stabs or other injuries. Tear
apart and throw away plastic packaging bags so that children will not play with them. Children playing with plastic bags face the danger of death by suffocation.
•
Do not install unit in an area where flammable materials are present due to risk of explosion resulting in serious injury or death.
•
Do not ground units to telephone wires or lightning rods because lightning strikes could cause a severe shock hazard resulting in
severe injury or death, and to gas pipes because a gas leak could result in an explosion which could lead to severe injury or death.
Refrigerant gas may produce a toxic gas if it
WARNING
• Installation should be left to the authorized dealer or another trained professional.
Improper installation may cause water leakage, electrical shock, fire, or equipment damage.
• Install the air conditioner according to the instructions given in this manual.
Incomplete installation may cause water leakage, electrical shock, fire or equipment damage.
• Be sure to use the supplied or exact specified installation parts.
Use of other parts may cause the unit to come to lose, water leakage, electrical shock, fire or equipment damage.
• Install the air conditioner on a solid base that is level and can support the weight of the unit.
An inadequate base or incomplete installation may cause injury or equipment damage in the event the unit falls off the base or comes loose.
•
Electrical work should be carried out in accordance with the installation manual and the national, state and local electrical wiring codes.
Insufficient capacity or incomplete electrical work may cause electrical shock, fire or equipment damage.
•
Be sure to use a dedicated power circuit. Never use a power supply shared by another appliance. Follow all appropriate electrical codes.
• For wiring, use a wire or cable long enough to cover the entire distance with no splices if possible.
Do not use an extension cord. Do not put other loads on the power supply. Use a only a separate dedicated power circuit.
(Failure to do so may cause abnormal heat, electric shock, fire or equipment damage.)
•
Use the specified types of wires for electrical connections between the indoor and outdoor units. Follow all state and local electrical codes.
Firmly clamp the interconnecting wires so their terminals receive no external stresses. Incomplete connections or clamping may cause terminal overheating, fire or equipment damage.
•
After connecting all wiring be sure to shape the cables so that they do not put undue stress on the electrical covers, panels or terminals.
Install covers over the wires. Incomplete cover installation may cause terminal overheating, electrical shock,fire or equipment damage.
•
When installing or relocating the system, be sure to keep the refrigerant circuit free from all substances other than the specified refrigerant (R410A), such as air.
(Any presence of air or other foreign substance in the refrigerant circuit causes an abnormal pressure rise which may result in rupture, resulting in injury.)

Safety Precautions (2)
Outdoor Unit Installation (2)
*1. If the compound pressure gauge pointer swings back, refrigerant may have water content or a loose pipe
joint may exists. Check all pipe joints and retighten nuts as needed, then repeat steps 2) through 4).
• If using additional refrigerant, perform air purging from the refrigerant
pipes and indoor unit using a vacuum pump, then charge additional
refrigerant.
•
Use a hexagonal wrench (3/16 inch (4mm)) to operate the stop valve rod.
• All refrigerant pipe joints should be tightened with a torque wrench at
the specified tightening torque.
5. Purging air and checking gas leakage.
• When piping work is completed, it is necessary to purge the air and check for gas leakage.
1) Do not mix any substance other than the specified refrigerant (R410A) into the refrigeration cycle.
2) When refrigerant gas leaks occur, ventilate the room as soon and as much as possible.
3)
R410A, as well as other refrigerants, should always be recovered and never be released directly into the environment.
4) Use a vacuum pump for R410A exclusively. Using the same vacuum pump for different refrigerants
may damage the vacuum pump or the unit.
1) Connect projection side of charging hose (which comes from gauge manifold) to gas stop valve’s service port.
2) Fully open gauge manifold’s low-pressure valve (Lo) and completely close its high-pressure valve (Hi).
(High-pressure valve subsequently requires no operation.)
3) Do vacuum pumping and make sure that the compound pressure gauge reads – 29.9inHg (–0.1MPa).
(The vacuum pump should run for at least 10 min.)
4) Close gauge manifold’s low-pressure valve (Lo) and stop vacuum pump.
(Keep this state for a few minutes to make sure that the compound pressure gauge pointer does not swing back.)*1
.
5) Remove valve caps from liquid stop valve and gas stop valve.
6) Turn the liquid stop valve’s rod 90 degrees counterclockwise with a hexagonal wrench to open valve.
Close it after 5 seconds, and check for gas leakage.
Using soapy water, check for gas leakage from indoor unit’s flare and outdoor unit’s flare and valve rods.
After the check is complete, wipe all soapy water off.
7) Disconnect charging hose from gas stop valve’s service port, then fully open liquid and gas stop valves.
(Do not attempt to turn valve rod beyond its stop.)
8) Tighten valve caps and service port cap for the liquid and gas stop valves with a torque wrench at the specified
torques.
WARNING
Compound
pressure gauge
Pressure
meter
High-
pressure
valve
Low-pressure
valve
Vacuum pump
adapter
Vacuum pump
Service port
Gas stop
valve
Valve caps
Liquid stop valve
Charging
hoses
Gauge
manifold
•
During pump-down, stop the compressor before removing the refrigerant piping.
pump-down, air will be sucked in when the refrigerant piping is removed, causing abnormally high pressure which could lead to equipment damage or and personal injury.
•
During installation, attach the refrigerant piping securely before running the compressor.
open during pump-down, air will be sucked in when the compressor is run, causing abnormally high pressure which could lead to equipment damage and personal injury.
• Be sure to install a ground fault circuit interrupter breaker.
Failure to install a ground fault circuit interrupter breaker may result in electrically shocks, or fire personal injury.
WARNING
If the compressor is still running and the stop valve is open during
If the compressor is not attached and the stop valve is
CAUTION
• Do not install the air conditioner where gas leakage would be exposed to open flames.
If the gas leaks and builds up around the unit, it may catch fire.
• Establish drain piping according to the instructions of this manual. Inadequate piping may cause water damage.
• Tighten the flare nut according to the specified torque. A torque wrench should be used.
If the flare nut is tightened too much, the flare nut may crack over time and cause refrigerant leakage.
• Do not touch the heat exchanger fins.
Improper handling may result in injury.
• Be very careful about product transportation.
Some products use PP bands for packaging. Do not use any PP bands for a means of transportation. It is dangerous.
•
Make sure to provide for adequate measures in order to prevent that the outdoor unit be used as a shelter by small animals.
Small animals making contact with electrical parts can cause malfunctions, smoke or fire. Please instruct the customer to keep the area around the unit clean.
Accessories
Accessories supplied
with the outdoor unit:
(A) Installation manual
(C) Binding band
(B) Drain plug (Heat pump-Models)
1
There is on the
1
bottom packing case.
1
Precautions for Selecting the Location
1)
Choose a place strong enough to bear the weight and vibration of the unit, The location should not amplified the unit noise.
2)
Choose a location where the hot air discharged from the unit and the operationing noise will not be a nuisance to the neighbors.
3) Avoid noise sensitive locations such as bedrooms to avoid future problems.
4) There must be sufficient clearance for carrying the unit into and out of the site.
5) There must be sufficient space around the air inlet and the air outlet with no obstructions to airflow.
6) The surrounding area must be free from the possibility of flammable gas leakage.
7) Install units, power cords and inter-connecting cables at least 10 feet (3m) away from television and radio
sets. This is to prevent interference to images and sounds. (Noises may be heard even if they are more
than 10 feet (3m) away depending on radio wave conditions.)
In coastal areas or other places with salty atmosphere of sulfate gas, corrosion may shorten the life of the air conditioner.
8)
9) Do not place moisture sensitive equipment or articles under the outdoor unit condenstate drain.
NOTE: Do not install unit by hanging from a ceiling or stacking units.
CAUTION
When operating the air conditioner in a outdoor temperature
below, be sure to follow the instructions described below.
1) To prevent exposure to wind, install the outdoor unit with its
suction side facing the wall.
2) Never install the outdoor unit at a site where the suction side
may be exposed directly to wind.
3) To prevent exposure to wind, it is recommended to install a
baffle plate on the air discharge side of the outdoor unit.
Construct a large canopy.
Construct a pedestal.
Install the unit high enough off the
ground to prevent burying in snow.
4) In heavy snowfall areas, select an installation site where the
snow will not affect the unit.

Precautions on Installation
Outdoor Unit Installation (2)
*1. If the compound pressure gauge pointer swings back, refrigerant may have water content or a loose pipe
joint may exists. Check all pipe joints and retighten nuts as needed, then repeat steps 2) through 4).
• If using additional refrigerant, perform air purging from the refrigerant
pipes and indoor unit using a vacuum pump, then charge additional
refrigerant.
•
Use a hexagonal wrench (3/16 inch (4mm)) to operate the stop valve rod.
• All refrigerant pipe joints should be tightened with a torque wrench at
the specified tightening torque.
5. Purging air and checking gas leakage.
• When piping work is completed, it is necessary to purge the air and check for gas leakage.
1) Do not mix any substance other than the specified refrigerant (R410A) into the refrigeration cycle.
2) When refrigerant gas leaks occur, ventilate the room as soon and as much as possible.
3)
R410A, as well as other refrigerants, should always be recovered and never be released directly into the environment.
4) Use a vacuum pump for R410A exclusively. Using the same vacuum pump for different refrigerants
may damage the vacuum pump or the unit.
1) Connect projection side of charging hose (which comes from gauge manifold) to gas stop valve’s service port.
2) Fully open gauge manifold’s low-pressure valve (Lo) and completely close its high-pressure valve (Hi).
(High-pressure valve subsequently requires no operation.)
3) Do vacuum pumping and make sure that the compound pressure gauge reads – 29.9inHg (–0.1MPa).
(The vacuum pump should run for at least 10 min.)
4) Close gauge manifold’s low-pressure valve (Lo) and stop vacuum pump.
(Keep this state for a few minutes to make sure that the compound pressure gauge pointer does not swing back.)*1
.
5) Remove valve caps from liquid stop valve and gas stop valve.
6) Turn the liquid stop valve’s rod 90 degrees counterclockwise with a hexagonal wrench to open valve.
Close it after 5 seconds, and check for gas leakage.
Using soapy water, check for gas leakage from indoor unit’s flare and outdoor unit’s flare and valve rods.
After the check is complete, wipe all soapy water off.
7) Disconnect charging hose from gas stop valve’s service port, then fully open liquid and gas stop valves.
(Do not attempt to turn valve rod beyond its stop.)
8) Tighten valve caps and service port cap for the liquid and gas stop valves with a torque wrench at the specified
torques.
WARNING
Compound
pressure gauge
Pressure
meter
High-
pressure
valve
Low-pressure
valve
Vacuum pump
adapter
Vacuum pump
Service port
Gas stop
valve
Valve caps
Liquid stop valve
Charging
hoses
Gauge
manifold
Wiring (1)
• Do not turn ON the safety breaker until all work is completed.
<Wiring procedure>
1)
Strip the insulation from the wire (3/4 inch (20mm)).
2) Connect the connection wires between the
indoor and outdoor units so that the terminal
numbers match.
3) After completing wiring, fix the protection plate to its original position.
<Work before wiring>
A protection plate is fixed for protection from the high-voltage section.
Before starting wiring work, remove the 2 screws and the protection plate.
<Method of mounting conduit>
1)
Pass wires through the conduit and secure them with a lock nut.
2) By removing the 2 screws to remove the conduit mounting plate, you can work without the plate.
3) Secure the wire with a binding band to the conduit mounting plate.
After completing the work, reattach the conduit mounting plate to its original position.
1) Do not use spliced wires, stranded wires, extension cords, or starburst connections, as they may cause
overheating, electrical shock, or fire. Follow all Local, and State electrical codes.
2) Do not use locally purchased electrical parts inside the product. (Do not overload the circuit by adding
drain pump or other electrical equipment to unit terminals.) Doing so may cause electric shock or fire.
3) Be sure to install an earth leak detector. (One that can handle higher harmonics.)
(This unit uses an inverter, which means that it must be used an earth leak detector capable handling
harmonics in order to prevent malfunctioning of the earth leak detector itself.)
4) Use an all-pole disconnection type breaker with at least 1/8 inch (3mm) between the contact point gaps.
5) The earth leakage circuit breaker must operate at 30mA or lower.
6) When carrying out wiring connection, take care not to pull at the conduit.
7) Do not connect the power wire to the indoor unit. Doing so may cause electric shock or fire.
WARNING
When the protection plate is removed,
do not turn ON the safety breaker.
WARNING
1
2
3
123
Safety
breaker
15A
Earth leakage
circuit breaker
Earth
Outdoor unit
Indoor
unit
Power supply
60Hz
208-230V
Use AWG16 or AWG14
wire for the power supply
and interconnecting wires.
L1 L2
When wire length exceeds
32ft (10m), use AWG14 wires.
1
2
3
Power supply
terminal block
Use the specified wires
and connect them
securely.
Shape the wires so that
there is no lifting of the
stop valve cover or
other structural parts.
Protection plate
Screw
ConduitLock nut
Conduit
mounting
plate
Secure the wires
firmly using the
binding band, as
shown in the figure.
Secure firmly,
making sure no
outside pressure is
exerted on the
terminals.
(C) Binding
band
•
Ensure the strength and level of the installation will not cause any operating vibration or noise after installed.
• In accordance with the foundation drawing, fix the unit securely by means of the foundation bolts. (Prepare
four sets of 3/8 inch (M10) or 7/16 inch (M12) foundation bolts, nuts and washers each which are available
on the market.)
• It is best to screw in the foundation bolts until their length are 3/4 inch (20mm) from the foundation surface.
Max. allowable height
Gas pipe
Liquid pipe
No refrigerant needs to be added if the piping does not
*
exceed the maximum length.
In sites with poor drainage, use
block bases for outdoor unit.
Adjust foot height until the unit
is leveled. Otherwise, water
leakage or pooling of water may
occur.
Outdoor Unit Installation Drawings
32ft (10m)Max. allowable length
26ft (8m)
O.D. 3/8 inch (9.5mm)
O.D. 1/4 inch (6.4mm)
Allow 11-13/16 inch
(300mm) of work space
below the ceiling surface.
9-7/8” (250mm) from wall
3/4” (20mm)
Wrap the insulation pipe with
the finishing tape from bottom
to top.
Allow space for piping
and electrical servicing.
How to remove the stop valve cover.
Remove the screw on the
stop valve cover.
Slide the lid downward
to remove it.
How to attach the stop valve cover.
Insert the upper part of the
stop valve cover into the
outdoor unit to install.
Tighten the screws.
Stop valve cover
22-5/8 (574)
(Foot bolt-hole centers)
4-1/8 (105.5)
(From unit’s side)
12-1/4 (311)
(Foot bolt-hole
centers)
Where there is a danger of the unit
falling, use foot bolts, or wires.
Unit: inch (mm)
• Where a wall or other obstacle is in the path of outdoor unit’s intake or exhaust airflow, follow the
installation guidelines below.
• For any of the below installation patterns, the wall height on the exhaust side should be 47-3/16 inch
(1200mm) or less.
Wall facing one side
More than 1-15/16 (50) More than 3-15/16 (100)
47-3/16
(1200)
or less
Side view
Installation Guidelines
Walls facing two sides
More than
1-15/16 (50)
More
than
3-15/16
(100)
Top view
More
than
5-7/8
(150)
More than
1-15/16 (50)
Walls facing three sides
More than
1-15/16 (50)
Top view
More than
5-7/8 (150)
More than
11-13/16 (300)
Unit: inch (mm)