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 DAIKIN WHICH ARE
SPECIFICALLY DESIGNED FOR USE WITH THE
EQUIPMENT AND HAVE THEM INSTALLED BY A
PROFESSIONAL.
DAIKIN EQUIPMENT IS DESIGNED FOR COMFORT
APPLICATIONS. FOR USE IN OTHER APPLICATIONS,
PLEASE CONTACT YOUR LOCAL DAIKIN DEALER.
IF UNSURE OF INSTALLATION PROCEDURES OR USE,
ALWAYS CONTACT YOUR DEALER FOR ADVICE AND
INFORMATION.
1. SAFETYCONSIDERATIONS
The precautions listed here are divided into the following two types.
Both cover very important topics, so be sure to follow them carefully.
WARNING
If the warning is not observed, it may cause serious casualties.
CAUTION
If the caution is not observed, it may cause injury or damage to the
equipment.
WARNING
■Ask your dealer or qualified personnel to carry out
installation work. Do not install the machine by
yourself.
Improper installation may result in water leakage,
electric shocks or fire.
■Perform installation work in accordance with this
installation manual.
Improper installation may lead to water leakage,
electric shocks or fire.
■When a unit is installed in a small room, it is necessary
to take measures so that the leaked refrigerant amount
does not exceed the limit even if it leaks. As for the
measures to prevent the leak from not exceeding the
limit, please consult with your distributor.
If the leaked amount exceeds the limit, it may cause
an oxygen deficiency accident.
■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.
■Install the air conditioner on a foundation that can
withstand its weight.
Insufficient strength may result in the fall of equipment
and causing injury.
■Carry out the specified installation work in consideration
of strong winds, typhoons, or earthquakes.
Improper installation work may result in accidents due
to fall of equipment.
■Make certain that all electrical work is carried out by
qualified personnel according to the local laws and
regulations and this installation manual, using a
separate circuit.
Insufficient capacity of the power supply circuit or
improper electrical construction may lead to electric
shocks or fire.
■Make sure that all wiring is secure, using the specified
wires and ensuring that external forces do not act on
the terminal connections or wires.
Incomplete connection or fixing may cause a fire.
■When wiring between the indoor and outdoor units,
and wiring the power supply, form the wires so that
the frontside panel can be securely fastened.
If the frontside panel is not in place, overheat of the
terminals, electric shocks or a fire may be caused.
■If refrigerant gas leaks during installation work,
ventilate the area immediately.
To xic gas may be produced if refrigerant gas comes
into contact with fire.
■After completing the installation work, check to make
sure that there is no leakage of refrigerant gas.
To xic gas may be produced if refrigerant gas leaks
into the room and comes into contact with a source of
fire, such as a fan heater, stove or cooker.
■Before touching electric terminal parts, turn off power
switch.
RXYSQ4~6M7V3B
VRVII-S system air conditioner
4PW17806-1C
Installation manual
1
CAUTION
■Ground the air conditioner.
Grounding resistance should be according to national
regulations
Do not connect the earth wire to gas or water
pipes, lightning conductor or telephone earth
wire.
Incomplete grounding may cause electric
shocks.
■ Gas pipe.
Ignition or explosion may occur if the gas leaks.
■ Water pipe.
Hard vinyl tubes are not effective grounds.
■ Lightning conductor or telephone ground wire.
Electric potential may rise abnormally if struck by a
lightning bolt.
■Be sure to install an earth leak detector.
Failure to install an earth leak detector may cause
electric shocks or fire.
■Install drain piping according to this installation manual
to ensure good drainage, and insulate the pipe to
prevent condensation.
Improper drain piping may cause water leakage, and
make the furnitures get wet.
■Install the indoor and outdoor units, power wire and
connecting wire at least 1 meter away from televisions
or radios to prevent image interference or noise.
(Depending on the radio waves, a distance of 1 meter
may not be sufficient to eliminate the noise.)
■Do not rinse the outdoor unit.
This may cause electric shocks or fire.
■Do not install the air conditioner in places such as the
following:
■ Where there is mist of mineral oil, oil spray or vapor
for example a kitchen.
Plastic parts may deteriorate, and cause them to fall
out or water to leak.
■ Where corrosive gas, such as sulfurous acid gas, is
produced.
Corrosion of copper pipes or soldered parts may
cause the refrigerant to leak.
■ Where there is machinery which emits
electromagnetic waves.
Electromagnetic waves may disturb the control
system, and cause malfunction of the equipment.
■ Where flammable gases may leak, where carbon
fiber or ignitable dust is suspended in the air or
where volatile flammables, such as thinner or
gasoline, are handled.
Such gases may cause a fire.
■ Where the air contains high levels of salt such as
that near the ocean.
■ Where voltage fluctuates a lot, such as that in
factories.
■ In vehicles or vessels.
■ Where acidic or alkaline vapoure is present.
■Do not allow a child to mount on the outdoor unit or
avoid placing any object on the unit.
Falling or tumbling may result in injury.
■Do not touch any refrigerant which has leaked out of
refrigerant piping connections.
This may result in frostbite.
2.INTRODUCTION
2.1. Combination
The indoor units can be installed in the following range.
■Always use appropriate indoor units compatible with R-410A.
To learn which models of indoor units are compatible with
R-410A, refer to the product catalogs.
■Total capacity/quantity of indoor units
Outdoor unit
RXYSQ450~1306
RXYSQ562.5~162.58
RXYSQ670~1829
Total capacity of
indoor units
2.2. Standard supplied accessories
Gas line piping (1)
Gas line piping (2)(*)
Gas line piping (3)(*)
Installation manual
Operation manual
(*) Only for RXYSQ6.
(*)
+ copper gasket
Location of accessories: refer to figure 1.
1Accessories
1
1
1
1
1
2.3. Optional accessories
To install the above outdoor units, the following optional parts are
also required.
■Refrigerant branching kit (for R-410A only: Always use an
appropriate kit dedicated for your system.)
Refnet headerRefnet joint
KHRQ22M29HKHRQ22M20T
To select an optimum refrigerant branching kit, refer to "Refrigerant
branch kit selection" on page 9.
2.4. Technical and electrical specifications
Refer to the Engineering Data Book for the complete list of
specifications.
Total quantity of
indoor units
+
Installation manual
2
VRVII-S system air conditioner
RXYSQ4~6M7V3B
4PW17806-1C
3.BEFOREINSTALLATION
Since design pressure is 3.8 MPa or 38 bar, pipes of larger
wall thickness may be required. Refer to paragraph
"7.1. Selection of piping material" on page 5.
3.1. Precautions for R-410A
■The refrigerant requires strict cautions for keeping the system
clean, dry and tight.
- Clean and dry
Foreign materials (including mineral oils or moisture) should be
prevented from getting mixed into the system.
- Tight
Read "8. Precautions on refrigerant piping" on page 6 carefully
and follow these procedures correctly.
■Since R-410A is a mixed refrigerant, the required additional
refrigerant must be charged in its liquid state. (If the refrigerant
is in state of gas, its composition changes and the system will
not work properly).
■The connected indoor units must be indoor units designed
exclusively for R-410A.
3.2. Installation
■For installation of the indoor unit(s), refer to the indoor unit
installation manual.
■Never operate the air conditioner with the discharge pipe
thermister (R3T), suction pipe thermister (R2T) and pressure
sensors (S1NPH, S1NPL) removed. Such operation may burn
out the compressor.
■Be sure to confirm the model name and the serial no. of the
outer (front) plates when attaching/detaching the plates to avoid
mistakes.
■When closing the service panels, take care that the tightening
torque does not exceed 4.1 N•m.
3.3. Handling
As shown in the figure, bring the unit slowly by grabbing the left and
right grips.
4.SELECTINGINSTALLATIONSITE
This 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.
■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.
1Select an installation site where the following conditions are
satisfied and that meets with your customer's approval.
- Places which are well-ventilated.
- Places where the unit does not bother next-door neighbours.
- Safe places which can withstand the unit's weight and
vibration and where the unit can be installed level.
- Places where there is no possibility of flammable gas or
product leak.
- Places where servicing space can be well ensured.
- Places where the indoor and outdoor units' piping and wiring
lengths come within the allowable ranges.
- Places where water leaking from the unit cannot cause
damage to the location (e.g. in case of a blocked drain pipe).
- Places where the rain can be avoided as much as possible.
2When installing the unit in a place exposed to strong wind, pay
special attention to the following.
Strong winds of 5 m/sec or more blowing against the outdoor
unit's air outlet causes short circuit (suction of discharge air),
and this may have the following consequences:
- Deterioration of the operational capacity.
-Frequent frost acceleration in heating operation.
- Disruption of operation due to rise of high pressure.
- When a strong wind blows continuously on the face of the
unit, the fan can start rotating very fast until it breaks.
Refer to the figures for installation of this unit in a place where
the wind direction can be foreseen.
■Tu rn the air outlet side toward the building's wall, fence or
screen.
Place your hands on the corner instead of holding the suction inlet in
the side of the casing, otherwise the casing could be deformed.
Ta ke care not to let hands or objects come in contact with
rear fins.
RXYSQ4~6M7V3B
VRVII-S system air conditioner
4PW17806-1C
Make sure there is enough room to do the installation
■Set the outlet side at a right angle to the direction of the wind.
Strong wind
Blown airStrong wind
3Prepare a water drainage channel around the foundation, to
drain waste water from around the unit.
Installation manual
3
4If the water drainage of the unit is not easy, please build up the
unit on a foundation of concrete blocks, etc. (the height of the
foundation should be maximum 150 mm).
5If you install the unit on a frame, please install a waterproof plate
within 150 mm of the underside of the unit in order to prevent the
invasion of water from the lower direction.
6When installing the unit in a place frequently exposed to snow,
pay special attention to the following:
- Elevate the foundation as high as possible.
- Remove the rear suction grille to prevent snow from
accumulating on the rear fins.
7If you install the unit on a building frame,
please install a waterproof plate (within
150 mm of the underside of the unit) or
use a drain plug kit (option) in order to
avoid the drainwater dripping.
The equipment described in this manual may cause
electronic noise generated from radio-frequency energy.
The equipment complies to specifications that are
designed to provide reasonable protection against such
interference. However, there is no guarantee that
interference will not occur in a particular installation.
It is therefore recommended to install the equipment and
electric wires keeping proper distances away from stereo
equipment, personal computers, etc... (See figure 2)
1Personal computer or radio
2Fuse
3Earth leak detector
4Remote controller
5Cool/heat selector
6Indoor unit
In extreme circumstances you should keep distances of
3 m or more and use conduit tubes for power and
transmission lines.
5.1. Installation method for prevention of falling over
If it is necessary to prevent the unit from falling over, install as shown
in the figure.
■prepare all 4 wires as indicated in the drawing
■unscrew the top plate at the 4 locations indicated A and B
■put the screws through the nooses and screw them back tight
AA
B
C
A location of the 2 fixation holes on the front side of the unit
B location of the 2 fixation holes on the rear side of the unit
C wires: field supply
5.2. Method for removing transport fittings
The transportation fittings (2 yellow pieces) are provided on the leg of
the compressor for protecting the unit during transport. Remove them
as shown in figure 3 and described below.
ACompressor
BFixing nut
CTransport fitting
1Slightly loosen each fixing nut (B).
2Remove each transport fitting (C) as shown in figure 3.
3Tighten each fixing nut (B) again.
CAUTION
If the unit is operated with the transport fittings attached,
abnormal vibration or noise may be generated.
5.PRECAUTIONSONINSTALLATION
■Check the strength and level of the installation ground so that
the unit will not cause any operating vibration or noise after
installation.
■In accordance with the foundation drawing in the figure, fix the
unit securely by means of the foundation bolts. (Prepare four
sets of 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
20 mm from the foundation surface.
A
140
117
219
289
45
A Discharge side
B Bottom view (mm)
C Drain hole
B
421
612
140620
350
(345-355)
C
20
6.INSTALLATIONSERVICINGSPACE
■The connection piping outlet direction in the installation shown in
figure 4 is frontward or downward. The unit of numeric values is
mm.
■When routing the piping backward, secure space of ≥250 mm on
the right side of the unit.
(A) In case of non-stacked installation (See figure 4)
In these cases, close the
Suction side obstacle
Discharge side obstacle
Left side obstacle
Right side obstacle
Top side obstacle
Obstacle is present
✓
1
bottom of the installation
frame to prevent the
discharged air from
being bypassed
In these cases, only 2
2
units can be installed.
In these cases, no
3
restriction of height L1.
This situation is not
allowed
Installation manual
4
VRVII-S system air conditioner
RXYSQ4~6M7V3B
4PW17806-1C
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