Daikin CXTQ36TASBLUA, CXTQ24TASBLUA, CXTQ48TASBLUA, CXTQ60TASBLUA Installation Manual
MODELS
Cased Coil Unit
CXTQ24TASBLUA
CXTQ36TASBLUA
CXTQ48TASBLUA
CXTQ60TASBLUA
INSTALLATION MANUAL
SYSTEM Inverter Air Conditioners
O
NLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL
ADJUST, SERVICE OR REPAIR (HEREINAFTER
EQUIPMENT SPECIFIED IN THIS MANUAL SHOULD SERVICE THE
EQUIPMENT
FOR ANY INJURY OR PROPERTY DAMAGE ARISING FROM
IMPROPER SERVICE OR SERVICE PROCEDURES
THIS UNIT, YOU ASSUME RESPONSIBILITY FOR ANY INJURY OR
PROPERTY DAMAGE WHICH MAY RESULT
JURISDICTIONS THAT REQUIRE ONE OR MORE LICENSES TO
SERVICE THE EQUIPMENT SPECIFIED IN THIS MANUAL, ONLY
LICENSED PERSONNEL SHOULD SERVICE THE EQUIPMENT
MPROPER INSTALLATION, ADJUSTMENT, SERVICING OR REPAIR
I
OF THE EQUIPMENT SPECIFIED IN THIS MANUAL, OR ATTEMPTING
TO INSTALL, ADJUST, SERVICE OR REPAIR THE EQUIPMENT
SPECIFIED IN THIS MANUAL WITHOUT PROPER TRAINING MAY
RESULT IN PRODUCT DAMAGE, PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH
. THE
MANUFACTURER WILL NOT BE RESPONSIBLE
.
, “
. IN
ADDITION, IN
SERVICE
. IF
,
”)
THE
YOU SERVICE
.
Read these instructions carefully before installation. Keep this manual in a handy place
English
for future reference. This manual should be left with the equipment owner.
Lire soigneusement ces instructions avant l’installation.
Français
Conserver ce manuel à portée de main pour référence ultérieure. Ce manuel doit être donné au
propriétaire de l’équipement.
Español
Lea cuidadosamente estas instrucciones antes de instalar.
Guarde este manual en un lugar a mano para leer en caso de tener alguna duda.
Este manual debe permanecer con el propietario del equipo.
IOD-4028A
11/2017
English
1
Installation manualVRV SYSTEM Inverter Air Conditioners
CONTENTS
1. SAFETY INSTRUCTIONS ...................................................2
2. BEFORE INST ALLA TION ...................................................4
3. SELECTING INST ALLATION SITE.....................................5
4. INST ALLA TION LOCA TION................................................5
5. REFRIGERANT PIPING WORK .........................................8
6. DRAIN PIPING WORK.......................................................10
7. DUCT WORK ....................................................................11
8. ELECTRICAL WIRING WORK .........................................11
9. FIELD SETTING ................................................................17
10. ACCESSORIES.................................................................21
11. TEST RUN .........................................................................22
1. SAFETY INSTRUCTIONS
Read these “SAFETY INSTRUCTIONS for Installation” carefully before installing an air conditioner or heat pump. After
completing the installation, make sure that the unit operates
properly during the start-up operation.
Instruct the customer on how to operate and maintain the
unit. Inform customers that they should store this Installation
Manual with the Operation Manual for future reference.
Always use a licensed installer or contractor to install this
product. Improper installation can result in water or refrigerant leakage, electrical shock, fire, or explosion.
• Refrigerant gas is heavier than air and replaces oxygen.
A massive leak can lead to oxygen depletion, especially
in basements, and an asphyxiation hazard could occur
leading to serious injury or death. For a refrigerant leak,
contact your licensed professional contractor.
• Do not ground units to water pipes, gas pipes, telephone
wires or lightning rods since incomplete grounding can
cause a severe shock hazard, resulting in severe injury
or death. Additionally, grounding to gas pipes could
cause a gas leak resulting in a potential explosion causing severe injury or death.
• If refrigerant gas leaks during installation, ventilate the
area immediately. Refrigerant gas may produce toxic gas
if it comes in contact with fire. Exposure to this gas could
cause severe injury or death.
• After completing the installation work, ensure the refrigerant gas does not leak anywhere in the system.
• Due to the risk of explosions that can cause serious
injury or death, do not install the unit in an area where
flammable materials are present.
• Safely dispose of all packing and transportation materials in accordance with federal/state/local laws or ordinances. Plastic packing materials used for transportation may cause injuries or death by suffocation.
Nails and other metal or wood parts used for packing
may cause wounds or other injuries.
• All phases of the field-installation, including, but not limited to, electrical, piping, safety, etc., must be in accordance with manufacturer’s instructions and must comply with national, state, provincial and local codes.
• Only a licensed professional contractor should install
this equipment and must be done in accordance with
this installation manual. Improper installation could lead
to leaks and electric shock or fire.
• When installing the unit in a small room, ensure the refrigerant concentration does not exceed allowable safety
limits. Excessive accidental refrigerant leaks in a closed
ambient space can lead to oxygen deficiency.
• Do not use any device that is not design-certified by
Daikin for use with this unit. Serious property damage,
personal injury, reduced unit performance and/or hazardous conditions may result from the use of such nonapproved devices.
• Install the air conditioner or heat pump on a foundation
strong enough that it can withstand the weight of the
unit. A foundation of insufficient strength may result in
the unit falling and causing injuries.
• When installing, take into account strong winds, typhoons or earthquakes. Improper installation may result in the unit falling and injuries.
• 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, state, and
national regulations. An insufficient power supply capacity or improper electrical construction may lead to
electric shocks or fire.
• Make sure that all wiring is secured, that specified wires
are used and that no external forces act on the terminal
connections or wires. Improper connections or installation may result in fire.
• When wiring, position the wires so that the control panel
and cover can be securely fastened. Improper positioning of the control panel and cover may result in electric
shocks, fire or the terminals overheating.
If the control panel cover is not installed properly, dust
or water may enter the control panel causing fire or electric shock.
• Before touching electrical parts, turn off the unit.
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• This equipment can be installed with a Ground-Fault Circuit Breaker (GFCI). Although this is a recognized measure for additional protection, with the grounding system in North America, a dedicated GFCI is not required.
• When installing or relocating the system, keep the refrigerant circuit free from substances (such as air) other than the
specified refrigerant (R-410A). Any presence of air or other
foreign substance in the refrigerant circuit can cause an abnormal pressure rise or rupture, resulting in injury.
• Do not change the setting of the protection devices. If the
pressure switch, thermal switch, or other protection device
is shorted and operated forcibly, or parts other than those
specified by Daikin are used, fire or explosion may occur.
• Remote controller (wireless kit) transmitting distance can
be shorter than expected in rooms with electronic fluorescent lamps (inverter or rapid start types). Install the
indoor unit far away from fluorescent lamps as much as
possible.
• Indoor units are for indoor installation only. Outdoor
units can be installed either outdoors or indoors. This
unit is for indoor use.
• Do not install the air conditioner or heat pump in the
following locations:
(a) Where a mineral oil mist or oil spray or vapor is
produced (for example, in a kitchen).
Plastic parts may deteriorate and fall off or result
in water leakage.
• Do not touch the switch with wet fingers. Touching
switch with wet fingers can cause electric shock.
• To prevent injury, children should never play on or
around the unit.
• Do not touch the refrigerant pipes during and immediately after operation as the refrigerant pipes may be hot
or cold, depending on the condition of the refrigerant
flowing through the refrigerant piping, compressor and
other refrigerant cycle parts. Your hands may suffer
burns or frostbite if you touch the refrigerant pipes. To
avoid injury, give the pipes time to return to normal temperature or, if you must touch them, be sure to wear
proper gloves.
• Install drain piping to proper drainage. Improper drain
piping may result in water leakage and property damage.
• Insulate piping to prevent condensation.
• Be careful when transporting the product.
• Do not use a charging cylinder. Using a charging cylinder may cause the refrigerant to deteriorate.
• Refrigerant R-410A in the system must be kept clean,
dry and tight.
(a) Clean and Dry — Foreign materials (including min-
eral oils such as SUNISO oil or moisture) should
be prevented from getting into the system.
(b) Tight — R-410A does not contain any chlorine, does
not destroy the ozone layer, and does not reduce
the earth’s protection again harmful ultraviolet radiation. R-410A can contribute to the greenhouse
effect if it is released. Therefore take proper measures to check for the tightness of the refrigerant
piping installation. Read the Refrigerant Piping
(section 5) and follow the procedures.
• Since R-410A is a blend, the required additional refrigerant must be charged in its liquid state. If the refrigerant is charged in a state of gas, its composition can
change and the system will not work properly.
The indoor unit is for R-410A. See the catalog for indoor
models that can be connected. Normal operation is not
possible when connected to other units.
(b) Where corrosive gas, such as sulfurous acid gas,
is produced. Corroding copper pipes or soldered
parts may result in refrigerant leakage.
(c) Near machinery emitting electromagnetic waves.
Electromagnetic waves may disturb the operation
of the control system and cause the unit to malfunction.
(d) Where flammable gas may leak, where there is car-
bon fiber or ignitable dust suspension in the air, or
where volatile flammables such as thinner or gasoline are handled. Operating the unit in such conditions can cause a fire.
• Take adequate measures to prevent the outside unit from
being used as a shelter by small animals. Small animals
making contact with electrical parts can cause malfunctions, smoke, or fire. Instruct the customer to keep the
area around the unit clean.
• Install the power supply and control wires for the indoor
and outdoor units at least 3.5 feet away from televisions
or radios to prevent image interference or noise. Depending on the radio waves, a distance of 3.5 feet may not be
sufficient to eliminate the noise.
• When dismantling the unit, treatment of the refrigerant,
oil and additional parts must be done in accordance with
the relevant local, state and national regulations.
• Do not use the following tools that have been previously
used with conventional refrigerants: gauge manifold,
charge hose, gas leak detector, reverse flow check valve,
refrigerant charge base, vacuum gauge or refrigerant recovery equipment.
• If the conventional refrigerant and refrigerator oil are
mixed in R-410A, the refrigerant may deteriorate.
• This air conditioner or heat pump is an appliance that
should not be accessible to the general public.
• As design pressure is 450 psi, the wall thickness of fieldinstalled pipes should be selected in accordance with
the relevant local, state and national regulations.
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2. BEFORE INST ALLATION
• Installation must be performed by a licensed professional
contractor. Improper installation could lead to leaks and electric shock or fire.
• Do not use any device that is not design-certified by Daikin
for use with this unit. Serious property damage, personal
injury, reduced unit performance and/or hazardous conditions may result from the use of such non-approved devices.
• Read and understand this manual before installing the indoor unit.
• Be sure to mount an air filter (part to be procured in the field)
in the suction air passage of the connected gas furnace in
order to prevent water leaking, etc.
The accessories needed for installation must be kept until
the installation work is completed. Do not discard them.
1. Decide upon a line of transport.
2. Leave the unit inside its packaging while moving, until reach-
ing the installation site. Where unpacking is unavoidable,
use a sling of soft material or protective plates together with
a rope when lifting, to avoid damage or scratches to the
unit.
2.2 OPTIONAL ACCESSORIES
This indoor unit requires one of the operation remote controls
listed below.
Remote Controller
Wired type BRC1E73*, BRC2A71
Wireless type** BRC4C8 2
* If BRC1E73 is not used a KRCS01-2UA
sens or must be us ed.
** Wireless ty pe controllers will only allow 2st age airflow
FOR THE FOLLOWING ITEMS, TAKE SPECIAL CARE DURING CONSTRUCTION AND CHECK AFTER INSTALLATION
IS FINISHED.
Be sure to verify the type of R-410A refrigerant to be used
before installing the unit.
(Using an incorrect refrigerant will prevent normal operation of the unit.)
For the installation of an outdoor unit, refer to the installation
manual attached to the outdoor unit.
2.1 PRECAUTIONS
• Be sure to instruct customers how to properly operate the
unit (operating different functions, and adjusting the temperature) by having them carry out operations themselves while
looking at the operation manual.
• Do not install in locations where the air contains high levels
of salt such as that near the ocean and where voltage fluctuates greatly (as in factories) or in vehicles or vessels.
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ITEMS TO BE CHECKED AFTER COMPLETION OF WORK
Items to be checked
Are the indoor and outdoor
units fixed firmly?
Is the refrigerant leak test
finished?
Is the unit fully insulated? Condensate may drip.
Does the drainage flow
smoothly?
Does the power supply
voltage corres pond to that
shown on the name plate?
Are the wiring an d piping
correct?
Is the unit safely grounded?
Is wiri ng size according to
specifications?
Is something blocking the air
outlet or inlet of either the
indoor or outdoor units?
Is the refrigerant piping length
and additional refrigerant
char ge documented?
Also review the SAFETY CONSIDERATIONS.
If not properly done, what is
likely to occur
Units may drop,vibrate
or make nois e
This may result in insufficient
cooling.
Condensate may drip.
The unit may malfunction or
the components b urn out.
The unit may malfunction or
the components b urn out.
Incompl ete grounding may
result in electric shocks.
The unit may malfunction or
the components b urn out.
This may result In insufficient
cooling.
The total refrigerant charge of
the system will not be available
for future reference.
Check
ITEMS TO BE CHECKED AT TIME OF DELIVERY
I tem s to be ch ecked Chec k
Did you hand the operation manual over to your
customer?
Did you explain about operations while showing
the operation manual to your customer?
Did you explain to your customer how to maintain
and clean loc al pr ocu rements suc h as the air filter,
suction grille, and air outlet grille?
Did you hand manuals of local procur ements (in
case equipped) over to your customer?
3. SELECTING INST ALLATION SITE
• In cases where the unit is installed in a space where the
humidity may exceed 86°F and 80%RH, reinforce the insulation on the unit body.
Use glass wool or polyethylene foam as insulation to ensure
the thickness is more than 2” and fits inside the installation
space opening.
Select an installation site where the following conditions are fulfilled and meets with your customer’s approval.
• Where optimum air distribution can be ensured.
• Where nothing blocks air passage.
• Where condensate can be properly drained.
• Where the supports are strong enough to bear the
indoor unit weight.
• Where piping between indoor and outdoor units is possible within the allowable limit. (Refer to the installation manual for the outdoor unit.)
• If a return-air duct is not installed, carefully select the
place and method of product installation so that air
flow into the product will not be blocked.
• When installing this unit in an area that may become
wet (such as crawl spaces), elevate the unit with a
sturdy, non-porous material.
• Refer to section 4.1 for clearance requirements. Consult all appropriate regulatory codes when determining final clearance.
4. INST ALLATION LOCATION
NOTE: These cased coils are designed for indoor installation
only. The CXTQ**T product line may be installed in upflow or
downflow orientations as shown in Figures 2 and 3.
The unit may be installed in upflow or downflow orientation as
shipped (refer to specific sections for more information).
NOTE: Condensation may form on the product during COOL
operation. It is recommended to install a secondary drain pan
(field supplied).
If installed above a finished living space, a secondary drain pan
should be installed under the entire unit. The drain pan’s condensate line should be routed to a location where the user will
see the condensate discharge. In many regions, the installation
of a secondary drain pan is required by building code. Following and adhering to these and all applicable local, state, and/or
national codes is your responsibility as the installer.
In areas where the ambient operating conditions reach above
80%RH, the manufacturer recommends that additional insulation be applied to the outside of the cabinet.
4.1 CLEARANCES
Refrigerant lines must be routed depending upon the configuration of the unit, in order to maintain the required 24” minimum
clearance for service.
In installations that may lead to physical damage (i.e. a garage),
it is advised to install a protective barrier to prevent such damage. Always install units so that a positive slope in condensate
line of 1/100 is allowed.
NOTE: Furnace application requires that the installer MUST review and strictly follow ALL furnace installation clearance guidelines. Failure to do so may result in property/equipment damage, personal injury or death.
CONSULT ALL APPROPRIATE REGULATORY CODES
WHEN DETERMINING FINAL CLEARANCES.
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UPFLOW
Figure 2
DOWN FLOW
Figure 3
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4.2 FILLER PLA TES
Filler plates are supplied on all 17.5, 21 & 24.5 inch chassis to
be used for adapting the unit to a furnace one size smaller. If
the plenum and furnace openings are the same size, the filler
plates must be removed. See Figure 1.
DPICX-B
Insulation Kit
DPICX-C
Insulation Kit
DPICX-D
Insulation Kit
CXTQ24TASBLU CXTQ48TASBLU CXTQ60TASBLU
CXTQ36TASBLU
INSULATION KIT
Table 1
4.5 SEALING ALONG THE PANEL GAP
IMPORTANT NOTE: To prevent cabinet “sweating”, apply field
provided insulation tape along all joining surfaces between the
coil, gas furnace, duct work, and panels. See Figure 4.
Filler
plate
Figure 1
4.3 UPFLOW/DOWNFLOW INST ALLATION
No field modifications are mandatory.
• Do not use the manifold or flowrator to pull the coil assembly
out. Doing so may result in braze joint damage and leaks.
4.4 INSULATION KIT
IMPORTANT NOTE: To prevent coil pan “sweating”, a coil insu-
lation kit (DPICX) is recommended. Insulation kits are
available through your local Daikin distributor. The DPICX is
not supplied with the cased coil and is recommended to minimize pan sweating in applications where operating conditions
exceed 80%RH.
See Table 1 for the correct DPICX and follow the instructions
provided with the kit for installation.
Figure 4
Apply insulation
tape
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5. REFRIGERANT PIPING WORK
s
Observe the requirements listed below for refrigerant tubing
sizes.
Model
CXTQ24/36/48/60 3/8" 5/8"
Tubing Size
Liquid Gas
• Using a tube cutter, cut off the factory spun end of both the
liquid and gas line piping.
5.2 Disconnect Internal Control Wiring
• Remove the left panel.
• Disconnect the Control Panel wiring from component wiring
using the EEV and Thermistor connectors located on the
outside of the control panel. See Figure 6.
Completely insulate both the liquid and gas refrigerant piping in
order to prevent condensation and possible water damage.
Failing to insulate the pipes may cause leaking or burns. Be
sure to use the insulation which can withstand such temperatures of 250°F (120°C) or more. Reinforce the insulation on the
refrigerant piping according to the installation environment. If
environmental conditions may reach 86°F and 80%RH, condensate may form on the surface of the insulation. To prevent
condensate leakage, reinforce the refrigerant piping insulation
according to the installation environment.
Follow the points below.
• Use a tube cutter and flaring block suitable for the type or
refrigerant.
• To prevent dust, moisture or other foreign matter from infiltrating the piping, either pinch the end or cover it with tape.
• Do not allow anything other than the designated refrigerant
(such as air) to get mixed into the refrigerant circuit. If any
refrigerant gas leaks while working on the unit, immediately
ventilate the room.
5.1 Cut off the spin closure.
• This coil is shipped containing gas under 150 P.S.I.G.
Release pressure from the gas piping pressure-release device
before initiating piping work
Cap
Sharp object
(2) Push
After the work is finished,
Replace cap.
(1) Remove
To prevent component wiring damage, the Control Panel
should be removed from the right front panel. Removing the
control panel will assist in allowing the wiring to be safely
pushed through the panel wire-way. The control panel is
detached from the left front panel by removing the four
mounting screws located on the four corners of the control
panel.
Internal W iring Connector
(EEV and Thermister)
Figure 6
Detail
Pressure
rele ase device
Gas piping
Liquid piping
Front pane l
Figure 5
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