Daikin | FXAQ12MVJU | Unit installation | Daikin FXAQ12MVJU Unit installation

OPERATION MANUAL
SYSTEM Inverter Air Conditioners
MODELS
Wall-mounted type
FXAQ12MVJU
FXAQ18MVJU
FXAQ24MVJU
Read these instructions carefully before installation.
Keep this manual in a handy place for future reference.
This manual should be left with the equipment owner.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
English
SAFETY CONSIDERATIONS ........................................................................................ 1
BEFORE INSTALLATION .............................................................................................. 3
SELECTING INSTALLATION SITE ............................................................................... 5
INDOOR UNIT INSTALLATION ..................................................................................... 6
REFRIGERANT PIPING WORK .................................................................................. 10
DRAIN PIPING WORK................................................................................................. 12
ELECTRIC WIRING WORK ......................................................................................... 13
WIRING EXAMPLE AND HOW TO SET THE REMOTE CONTROLLER ................... 14
FIELD SETTINGS ........................................................................................................ 19
TEST OPERATION ...................................................................................................... 20
1
VRV SYSTEM Inverter Air Conditioners
Installation manual
CONTENTS
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
SAFETY CONSIDERATIONS ........................................................................................ 1
BEFORE INSTALLATION .............................................................................................. 3
SELECTING INSTALLATION SITE ............................................................................... 5
INDOOR UNIT INSTALLATION ..................................................................................... 6
REFRIGERANT PIPING WORK .................................................................................. 10
DRAIN PIPING WORK................................................................................................. 12
ELECTRIC WIRING WORK ......................................................................................... 13
WIRING EXAMPLE AND HOW TO SET THE REMOTE CONTROLLER ................... 14
FIELD SETTINGS ........................................................................................................ 19
TEST OPERATION ...................................................................................................... 20
1. SAFETY CONSIDERATIONS
Please read these “SAFETY CONSIDERATIONS” carefully before installing air conditioning equipment and
be sure to install it correctly. After completing the installation, make sure that the unit operates properly during
the start-up operation.
Please instruct the customer on how to operate the unit and keep it maintained.
Also, inform customers that they should store this installation manual along with the operation manual for
future reference.
This air conditioner comes under the term “appliances not accessible to the general public”.
Meaning of warning, caution and note symbols.
WARNING .........Indication a potentially hazardous situation which, if not avoided, could result in death
or serious injury.
CAUTION ..........Indication a potentially hazardous situation which, if not avoided, may result in minor
or moderate injury. It may also be sued to alert against unsafe practices.
NOTE ................Indication situation that may result in equipment or property-damage-only accidents.
WARNING
• Ask your dealer or an authorized personnel to carry out installation work. Do not try to install the
unit 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 result in water leakage, electric shocks or fire.
• 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.
Contact the place of purchase for more information. Excessive refrigerant in a closed ambient can lead to
oxygen deficiency.
• 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 strong enough to withstand the weight of the unit.
A foundation of insufficient strength may result in the equipment falling and causing injuries.
1
• Carry out the specified installation work after taking account of strong winds, typhoons or
earthquakes.
Improper installation work may result in the equipment falling and causing accidents.
• Make sure that a separate power supply circuit is provided for this unit and that all electrical work
is carried out by an authorized 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.
• Make sure that all wiring is secured, the specified wires are used, and no external forces act on the
terminal connections or wires.
Improper connections or installation may result in fire.
• When wiring the power supply and connecting the remote controller wiring and transmission
wiring, position the wires so that the electric parts box lid can be securely fastened.
Improper positioning of the electric parts box lid may result in electric shocks, fire or the terminals
overheating.
• If the refrigerant gas leaks during installation, ventilate the area immediately.
Toxic gas may be produced if the refrigerant gas comes into contact with fire.
• 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.
• Before touching electrical parts, turn off the unit.
• Ground the air conditioner. Do not connect the ground wire to gas or water pipes, lightning rod or
a telephone ground wire.
Incomplete grounding may result in electric shocks.
• Do not touch the switch with wet fingers.
Touching a switch with wet fingers can cause electric shock.
• Install a leak circuit breaker, as required.
If a leak circuit breaker is not installed, electric shock may result.
• Do not install the air conditioner 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) near machinery emitting electromagnetic waves. Electromagnetic waves may disturb the operation of
the control system and result in a malfunction of the equipment.
(d) where flammable gases may leak, where there are carbon fiber or ignitable dust suspensions in the air,
or where volatile liquids such as thinner or gasoline are handled.
Operating the unit in such conditions may result in fire.
•
•
•
•
•
CAUTION
While following the instructions in this installation manual, insulate piping in order to prevent
condensation.
Improper piping insulation may result in water leakage and property damage.
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.
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. If children play
with a plastic bag which was not torn apart, they face the risk of suffocation.
Do not turn off the power immediately after stopping operation.
Always wait at least five minutes before turning off the power. Otherwise, water leakage and trouble may
occur.
2
•
•
•
•
NOTE
Install the indoor and outdoor units, power supply wiring and connecting wires at least 3.5ft. away
from televisions or radios in order to prevent image interference or noise.
(Depending on the radio waves, a distance of 3.5ft. may not be sufficient enough to eliminate the noise.)
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.
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.
Dismantling of the unit, treatment of the refrigerant, oil and eventual other parts, should be done in
accordance with the relevant local and national regulations.
2. BEFORE INSTALLATION
• When moving the unit while removing it from the packing case, be sure to lift it without exerting any
pressure on other parts, especially, holizontal flaps, the refrigerant piping, drain piping, and other
resin parts.
• Be sure to remove a cushion (corrugated paper) located between the heat exchanger and the right air filter.
• Be sure to check the type of R410A refrigerant to be used before installing the unit. (Using an incorrect
refrigerant will prevent normal operation of the unit.)
• The accessories needed for installation must be retained in your custody until the installation work is completed. Do not discard them!
• Decide upon a line of transport.
• Leave the unit inside its packaging while moving, until reaching 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.
• For the installation of an outdoor unit, refer to the installation manual attached to the outdoor unit.
• When using the wireless remote controller, refer to the installation manual attached to the wireless remote
controller.
• Do not install or operate the unit in rooms mentioned below.
• Laden with mineral oil, or filled with oil vapor or spray like in kitchens. (Plastic parts may deteriorate which could eventually cause the unit to fall out of place, or could lead to leaks.)
• Where corrosive gas like sulfurous gas exists. (Copper tubing and brazed spots may corrode
which could eventually lead to refrigerant leaks.)
• Where exposed to flammable gases and where volatile liquids like thinner or gasoline is used.
(Gas in the vicinity of the unit could ignite.)
• Where machines can generate electromagnetic waves. (Control system may malfunction.)
• Where the air contains high levels of salt such as that near the ocean and where voltage fluctuates greatly such as that in factories.
Also in vehicles or vessels.
• This unit, both indoor and outdoor, is suitable for installation in a commercial and light industrial environment.
If installed as a household appliance it could cause electromagnetic interference.
NOTE
• Be sure to read this manual before installing the indoor unit.
• Entrust installation to the place of purchase or an authorized serviceman. Improper installation could lead
to leaks and, in worse cases, electric shock of fire.
• Use only parts provided with the unit or parts satisfying required specifications. Unspecified parts could
cause the unit to fall out of place, or could lead to leaks and, in worse cases, electric shock or fire.
3
2-1 ACCESSORIES
Check the following accessories are included with your unit.
(1) Installation
panel
Name
Quantity
1 set
(2) Attachment screws
for the installation panel
8 pcs. → FXAQ12 type
9 pcs. → FXAQ18, 24 type
(3) Paper pattern
(4) Insulating tape
for installation
1 pc.
1 pc.
Shape
M4 × 25L
Name
Quantity
(5) Clamp
1 large 4 small
(6) Securing screws
2 pcs.
(7) Insulating tube
1 long 1 short
(Other)
• Operation manual
• Installation manual
Shape
M4 × 12L
2-2 OPTIONAL ACCESSORIES
Remote controller type
Model
BRC1C71
BRC7E818
Wired type
Wireless type
FOR THE FOLLOWING ITEMS, TAKE SPECIAL CARE DURING CONSTRUCTION AND
CHECK AFTER INSTALLATION IS FINISHED.
1. Items to be checked after completion of work
Items to be checked
Are the indoor and outdoor unit fixed
firmly?
Is the gas leak test finished?
Is the unit fully insulated?
Does drainage flow smoothly?
Does the power supply voltage correspond
to that shown on the name plate?
Are wiring and piping correct?
Is the unit safely grounded?
Is wiring size according to specifications?
Is something blocking the air outlet or inlet
of either the indoor or outdoor units?
Are refrigerant piping length and additional
refrigerant charge noted down?
If not properly done, what is likely to occur
Check
The units may drop, vibrate or make noise.
It may result in insufficient cooling.
Condensate water may drip.
Condensate water may drip.
The unit may malfunction or the
components burn out.
The unit may malfunction or the
components burn out.
It may be dangerous at electric leakage.
The unit may malfunction or the
components burn out.
It may result in insufficient cooling.
The refrigerant charge in the system is not
clear.
4
2. Items to be checked at time of delivery
* Also review the “SAFETY CONSIDERATIONS”
Items to be checked
Check
Did you explain about operations while showing the operation manual to your customer?
Did you hand the operation manual over to your customer?
Points for explanation about operations
The items with
WARNING and
CAUTION marks in the operation manual are the items
pertaining to possibility 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 operation manual.
2-3 NOTE TO THE INSTALLER
Be sure to instruct customers how to properly operate the unit (especially cleaning filters, operating different
functions, and adjusting the temperature) by having them carry out operations themselves while looking at the
manual.
3. SELECTING INSTALLATION SITE
(1) Select an installation site where the following conditions are fulfilled and that meets with your
customer’s approval.
• In the upper space (including the back of the ceiling) of the indoor unit where there is no possible
dripping of water from the refrigerant pipe, drain pipe, water pipe, etc.
• Where the wall is strong enough to bear the indoor unit weight.
• Where sufficient clearance for installation and maintenance can be ensured.
(Refer to Fig. 1 and Fig. 2)
• Where optimum air distribution can be ensured.
• Where nothing blocks the air passage.
• Where condensate can be properly drained.
• Where the wall is not significantly tilted.
• Where not exposed to flammable gases.
• Where piping between indoor and outdoor units is possible within the allowable limit.
(Refer to the installation manual of the outdoor unit.)
• Install the indoor and outdoor units, power supply wiring and connecting wires at least 3.5ft. away from
televisions or radios in order to prevent image interference or noise.
(Depending on the radio waves, a distance of 3.5ft. may not be sufficient enough to eliminate the noise.)
• Where the cool (warm) air reaches all across the room.
5
(2) Consider whether the place where the unit will be installed can support the full weight of the unit,
and reinforce it with boards and beams, etc. if needed before proceeding with the installation.
Also, reinforce the place to prevent vibration and noise before installing.
(The installation pitch can be found on the paper pattern for installation (3), so refer to it when considering the necessity for reinforcing the location.)
(3) The indoor unit may not be directly installed on the wall. Use the attached installation panel (1)
before installing the unit.
4. INDOOR UNIT INSTALLATION
• Use only accessories and parts which are of the designated specification when installing.
CAUTION
• Install so that the unit does not tilt to either side or forward.
• Do not hold the unit by the horizontal flaps when lifting it. (This may damage the horizontal flaps.)
(1) Open the piping through-hole.
• The refrigerant pipe and drain pipe can be passed out in one of 5 directions: left, bottom-left, back-left,
bottom-right, and back-right. (Refer to Fig. 3)
• Using the paper pattern for installation (3), choose where to pass the piping out and open a through-hole
(φ3 1/8”) in the wall.
Open the hole so that there is a downward slope for the drain piping. (See “ 6.DRAIN PIPING WORK ”)
(2) Remove the installation panel (1) from the unit and attach to the wall.
(The installation panel is temporarily attached to the unit with a screw. (In case of 12 type))
(Refer to Fig. 3)
(a) Check the location for the hole using the included paper pattern for installation (3).
• Choose a location so that there is at least a 3 1/2” gap between the ceiling and the main unit.
(b) Temporarily attach the installation panel (1) at the temporary-securing position on the paper pattern for
installation (3) and use a level to make sure the drain hose is either level or tilted slightly downward.
6
(c) Secure the installation panel (1) to the wall using either screws or bolts.
• If using the attachment screws for the installation panel (2), attach using at least 4 screws on either
side (for a total of 8 screws (12 type), 9 screws (18, 24 type)) of the recommended installation cleat
position on the included paper pattern for installation (3).
• If using bolts, attach using a M8 - M10 bolt or equivalent (for a total of 2 bolts) on either side.
• If dealing with concrete, use commercially available foundation bolts (M8 - M10 or equivalent).
(3) If using the left, bottom-left, or bottom-right positions for the piping, cut out the through-hole for
the piping in the front grill. (Refer to Fig. 4)
(4) Remove the front panel and the service lid. (Refer to Fig. 5)
< How to remove the front panel and service lid >
(1) Open the front panel to the point where it stops.
(2) Push the axes on either side of the front panel towards the center of the main unit and remove. (You can
also remove it by sliding the front panel either to the left or right and pulling it forward.)
(3) Remove the screw from the service lid and pull the handle forward.
7
(5) Point the pipe in the direction it will be passed out.
For bottom-right and back-right piping (Refer to Fig. 6)
• Wrap the drain hose and the refrigerant piping together with the insulating tape (4) so that the drain hose is below the refrigerant piping.
For left, bottom-left, and back-left piping
• Remove the front grill. (Refer to Fig. 7)
< How to remove the front grill >
Remove the front grill as described below when securing the indoor
unit with screws or when attaching Optional Accessories (wireless
remote controller, adapter PC board, etc.).
(1) Remove the front panel.
(2) Remove the screws (2 places in case of 12 type/3 places in case of 18, 24 type) securing the front grill.
(3) Remove the tabs (3 places) securing the front grill by pushing them in the direction of the arrows.
(4) Making sure not to catch the horizontal flaps, remove the front grill by pulling in the direction of the arrow.
• Remove the drain plug, the insulation tube, and the drain hose from the drain pan and replace.
(Refer to Fig. 8)
• Connect the local refrigerant piping ahead of time, matching it to the liquid pipe and gas pipe marks
engraved on the installation panel (accessory) (1).
< Replacing the drain hose and drain plug >
(1) Remove the drain plug and insulation tube.
(2) Remove the drain hose and replace onto the left side.
(3) Replace the drain plug and the insulation tube onto the right side.
8
(6) Hook the indoor unit onto the installation panel. (Refer to Fig. 9)
• Placing buffering material between the wall and the indoor unit at this time will make work easier.
For bottom-right and back-right piping
• Pass the drain hose and the refrigerant piping to the wall.
(7) Pass power supply wiring and ground wiring threaded through conduit (For connecting the conduit to the unit, see “8-1 HOW TO CONNECT WIRINGS”), and remote controller wiring through the
wiring guide in through the back of the indoor unit and to the front.
(8) Connect the piping. (See “5.REFRIGERANT PIPING WORK” and Fig. 10)
• Seal the piping through-hole with putty corking material.
(9) Push on both bottom edges of the indoor unit using both hands and hook the tab on the back of
the indoor unit onto the installation panel (1). (Refer to Fig. 9)
• At this time remove the buffering material placed in step (6).
• Make sure power supply wiring, transmission wiring, ground wiring and remote controller wiring are not
caught inside the indoor unit.
9
■ When screwing in the indoor unit
• Remove the front grill. (Refer to Fig. 7)
• Secure the indoor unit to the installation panel (1) with the securing
screws (6). (Refer to Fig. 11)
5. REFRIGERANT PIPING WORK
〈For refrigerant piping of outdoor units, see the installation manual attached to the outdoor unit.〉
〈Execute heat insulation work completely on both sides of the gas piping and the liquid piping.
Otherwise, a water leakage can result sometimes.〉
(When using a heat pump, the temperature of the gas piping can reach up to approximately 250°F, so use
insulation which is sufficiently resistant.)
〈Also, in cases where the temperature and humidity of the refrigerant piping sections might exceed
86°F or RH80 %, reinforce the refrigerant insulation. (13/16” or thicker) Condensation may form on the
surface of the insulating material.〉
〈Before refrigerant piping work, check which type of refrigerant is used. Proper operation is not possible if the types of refrigerant are not the same.〉
•
•
•
•
NOTE
Use a pipe cutter and flare suitable for the type of refrigerant.
To prevent dust, moisture or other foreign matter from infiltrating the tube, either pinch the end
or cover it with tape.
Do not allow anything other than the designated refrigerant to get mixed into the refrigerant
circuit, such as air, etc.
If any refrigerant gas leaks while working on the unit, ventilate the room thoroughly right away.
• The outdoor unit is charged with refrigerant.
• Use copper alloy seamless pipes.
• Be sure to use both a spanner and torque wrench together, as shown
in the drawing, when connecting or disconnecting pipes to/from the
unit. (Refer to Fig. 12)
• Refer to “Table 1” for the dimensions of flare.
• When connecting the flare nut, coat the flare section (both inside and
outside) with ester oil or ether oil, rotate three or four times first, then
screw in. (Refer to Fig. 13)
CAUTION
• Over-tightening may cause the flare nuts to crack or the refrigerant
to leak.
• Use the flare nut included with the unit.
10
• Refer to Table 1 for tightening torque.
Table 1
Pipe size
Tightening torque (ft-lbf)
Flare dimensions A (in.)
φ 1/4”
10.5 – 12.7
0.343 – 0.358
φ 3/8”
24.1 – 29.4
0.504 – 0.520
φ 1/2”
36.5 – 44.5
0.638 – 0.654
φ 5/8”
45.6 – 55.6
0.760 – 0.776
Flare shape (in.)
Not recommendable but in case of emergency
You must use a torque wrench but if you are obliged to install the unit without a torque wrench, you may
follow the installation method mentioned below.
After the work is finished, make sure to check that there is no gas leak.
When you keep on tightening the flare nut with a spanner, there is a point where the tightening torque
suddenly increases. From that position, further tighten the flare nut the angle shown below:
Table 2
Pipe size (in.)
φ 1/4”
φ 3/8”
φ 1/2”
φ 5/8”
Further tightening angle
60 to 90 degrees
60 to 90 degrees
30 to 60 degrees
30 to 60 degrees
Recommended arm length of tool (in.)
Approx. 5 7/8”
Approx. 7 7/8”
Approx. 9 13/16”
Approx. 11 13/16”
CAUTION
CAUTION TO BE TAKEN WHEN BRAZING REFRIGERANT PIPING
“Do not use flux when brazing refrigerant piping. Therefore, use the phosphor copper brazing filter metal
(BCuP) which does not require flux.”
(Flux has extremely harmful influence on refrigerant piping system. 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 refrigerant oil.)
• When brazing the refrigerant piping, only begin brazing after having carried out nitrogen substitution
(NOTE 1) or while inserting nitrogen into the refrigerant piping (NOTE 2). Once this is done, connect the
indoor unit with a flared or a flanged connection.
NOTE
1. Refer to the “Manual for Multi Installation for Buildings” for directions on how to carry out nitrogen
substitution. (Inquire with your dealer.)
2. Nitrogen should be set to 2.9 psi with a pressure-reducing valve if brazing while inserting nitrogen into the
piping. (Refer to Fig. 14)
• After checking for gas leaks, be sure to insulate the pipe connections using the supplementary piping
insulation tubing and insulating tape (4). The insulating tape (4) should be wrapped from the L-shaped bend
all the way to the end inside the unit. (Refer to Fig. 15)
11
CAUTION
Be sure to insulate any field piping all the way to the piping connection inside the unit. Any exposed piping
may cause condensate or burns if touched.
6. DRAIN PIPING WORK
(1) Install the drain piping. (Refer to Fig. 16)
• The drain pipe should be short with a downward slope and should prevent air pockets from forming.
• Watch out for the points in the figure 16 when performing drain work.
• When extending the drain hose, use a commercially available drain extension hose, and be sure to
insulate the extended section of the drain hose which is indoors. (Refer to Fig. 17)
• Make sure the diameter of the extension drain piping is the same as the indoor unit drain hose (hard vinyl
chloride, I.D. 9/16”) or bigger.
• In case of converging multiple drain pipes, install them referring to Fig. 18.
• Select diameter of drain piping which adapts to the capacity of the unit connected.
12
(2) Make sure the drain works properly.
• After drain work is complete, perform a drain
check by opening the front panel, removing
the air filter, pouring water into the drain pan,
and making sure water flows smoothly out of
the drain hose. (Refer to Fig. 19)
CAUTION
Drain piping connections
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.
7. ELECTRIC WIRING WORK
7-1 GENERAL INSTRUCTIONS
•
•
•
•
•
•
•
•
•
•
All field supplied parts and materials and electric works must conform to local codes.
Use copper wire only.
For electric wiring work, refer to also “WIRING DIAGRAM” attached to the unit.
For remote controller wiring details, refer to the installation manual attached to the remote controller.
All wiring must be performed by an authorized electrician.
This system consists of multiple indoor units. Mark each indoor unit as unit A, unit B..., and be sure the
terminal block wiring to the outdoor unit and BS unit is properly matched. If wiring and piping between the
outdoor unit and indoor unit are mismatched, the system may cause a malfunction.
A circuit breaker capable of shutting down power supply to the entire system must be installed.
Refer to the installation manual attached to the outdoor unit for the size of power supply wiring connected
to the outdoor unit, the capacity of the circuit breaker and switch, and wiring instructions.
Be sure to ground the air conditioner.
Do not connect the ground wire to gas pipes, water pipes, lightning rods, or telephone ground wires.
• Gas pipes: might cause explosions or fire if gas leaks.
• Water pipes: no grounding effect if hard vinyl piping is used.
• Lightning rods or telephone ground wires: might cause abnormally high electric potential in the ground
during lightning.
7-2 ELECTRICAL CHARACTERISTICS
Model
FXAQ12MVJU
FXAQ18MVJU
FXAQ24MVJU
Units
Hz
60
MCA: Min. Circuit Amps (A);
W: Fan Motor Rated Output (W);
13
Volts
Voltage range
208-230
Max. 253
Min. 187
Power supply
MCA
MFA
0.4
15
0.4
15
0.6
15
MFA: Max. Fuse Amps (A)
FLA: Full Load Amps (A)
Fan motor
W
FLA
40
0.3
43
0.3
43
0.5
7-3 SPECIFICATIONS FOR FIELD SUPPLIED FUSES AND WIRE
Model
Power supply wiring
Field fuses
FXAQ12MVJU
FXAQ18MVJU
FXAQ24MVJU
15A
Remote controller wiring
Transmission wiring
Size
Wire
Size
Size must
comply with
local codes.
Sheathed wire (2 wire)
AWG18-16
• Allowable length of transmission wiring and remote controller wiring are as follows.
(1) Outdoor unit - Indoor unit:Max.3280ft. (Total wiring length: 6560ft.)
(2) Indoor unit - Remote controller:Max.1640ft.
• Insulated thickness: 1/16” or more.
8. WIRING EXAMPLE AND HOW TO SET THE REMOTE CONTROLLER
8-1 HOW TO CONNECT WIRINGS
• Conduit for power supply wiring
Unscrew and remove the conduit mounting plate from the electric parts box. (Refer to Fig. 20)
Fix a conduit to the plate with a lock nut and reattach them at original position.
• Power supply wiring and ground wiring
Unscrew and remove the service lid.
Thread the power supply wiring and ground wiring through the included insulating tube (short) (7) and
secure them with the included clamp (small) (5). (Refer to Fig. 21)
Connect the power supply wiring and ground wiring to the power supply terminal block (3P).
When doing this, firmly secure using the included clamp (small) (5) according to the figure.
(Refer to Fig. 22)
• Transmission wiring and remote controller wiring
Unscrew and remove the service lid.
Thread the remote controller wiring and transmission wiring through the included insulating tube (long) (7)
and secure them with the included clamp (small) (5). (Refer to Fig. 21)
Connect the remote controller wiring and the transmission wiring to the terminal block (6P).
When doing this, tie the remote controller wiring and the transmission wiring using the included clamp (small)
(5) and then firmly secure using the included clamp (small) (5) according to the figure. (Refer to Fig. 22)
14
CAUTION
Be sure to attach the sealing material and putty (field supplied) to hole of wiring to prevent the infiltration
of water as well as any insects and other small creatures from outside. Otherwise a short-circuit may
occur inside the electric parts box.
When clamping the wirings, be sure no tension is applied to the wire connections by using the included
clamp. Also, when wiring, make sure the lid on the electric parts box fits snugly by arranging the wirings
neatly and attaching the service lid firmly. When attaching the service lid, make sure no wirings get caught
in the edges. Pass wiring through the wiring through holes to prevent damage to them.
Make sure the remote controller wiring, and transmission wire the wiring between the units, and other electrical wiring do not pass through the same locations outside the unit, separating them by at least 5”, otherwise electrical noise (external static) could cause mistaken operation or breakage.
Use only specified wire and tightly connect wires to terminals. Be careful wires do not place external stress
on terminals. Keep wiring in neat order and so as not to obstruct other equipment such as popping open the
service cover. Make sure the cover closes tight. Incomplete connections could result in overheating, and in
worse case, electric shock or fire.
15
[ PRECAUTIONS ]
1. Use round crimp-style terminals for connecting wires to the power supply terminal block.
(Refer to Fig. 23)
If unavailable, observe the following points when wiring.
• Do not connect wires of different gauge to the same power supply terminal.
(Looseness in the connection may cause overheating.)
• Use the specified electric wire. Connect the wire securely to the terminal. Lock the wire down without
applying excessive force to the terminal. (Tightening torque: 0.97ft.lbf ±10 %)
Fig. 23
2. Tightening torque for the terminal screws.
• Use the correct screwdriver for tightening the terminal screws. If the blade of screwdriver is too small, the
head of the screw might be damaged, and the screw will not be properly tightened.
• If the terminal screws are tightened too hard, screws might be damaged.
• Refer to the table below for the tightening torque of the terminal screws.
Terminal
Remote controller, Transmission wiring and
Forced off terminal block (6P)
Power supply and Ground terminal block (3P)
Size
Tightening torque
(ft-lbf)
M3.5
0.58 – 0.72
M4
0.87 – 1.06
3. Do not connect wires of different gauge to the same ground terminal. Looseness in the connection may
deteriorate protection.
4. Keep transmission wiring at least 5” away from power supply wiring. The equipment may malfunction if
subjected to electrical (external) noise.
5. For remote controller wiring, refer to the “INSTALLATION MANUAL OF REMOTE CONTROLLER”
attached to the remote controller.
6. Never connect power supply wiring to the terminal block for remote controller (6P). A mistake of
the sort could damage the entire system.
16
8-2 WIRING EXAMPLE
• Fit the power supply wiring of each unit with a switch and fuse as shown in the drawing.
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
17
3. When including BS unit
NOTE
1. 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.
2. Do not ground the equipment on gas pipes, water pipes, lightning rods or telephone ground wires.
Improper grounding could result in electric shock.
8-3 CONTROL BY 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
screwdriver into the recess between the
upper and lower part of 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. (Refer to Fig. 28)
Fig. 28
(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”.) (Refer to Fig. 29)
Wiring Method (See ‘‘7.ELECTRIC WIRING WORK’’)
(3) Remove the service lid.
(4) Add remote control 2 (slave) to the terminal block
(6P) for remote controller (P1, P2) in the electric
parts box.
(There is no polarity.) (Refer to Fig. 26 and section
7-3 for the wiring size.)
Fig. 29
18
8-4 COMPUTERISED CONTROL (FORCED OFF AND ON/OFF OPERATION)
(1) Wire specifications and how to perform wiring
• Connect the input from outside to terminals T1 and T2 of the terminal block (6P).
Wire specification
Sheathed vinyl cord or cable (2 wire)
Gauge
AWG18-16
Max. 328 ft.
Contact that can ensure the minimum
applicable load of 15V DC, 10 mA.
Length
External terminal
(2) Actuation
• The following table explains FORCED OFF and ON/OFF OPERATIONS in response to Input A.
FORCED OFF
ON/OFF OPERATION
Input “ON” stops operation (impossible by remote controllers).
Input OFF → ON turns ON unit.
Input OFF enables control by remote controller.
Input ON → OFF turns OFF unit.
(3) How to select FORCED OFF 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 “HOW TO SET IN THE FIELD”, in the remote
controller manual.
• When in the field set mode, select mode No. 12, then set
the first code (switch) No. to “1”. Then set second code
(position) No. to “01” for FORCED OFF and “02” for ON/
OFF OPERATION.
(FORCED OFF at factory set) (Refer to Fig. 31)
8-5 CENTRALIZED CONTROL
• For centralized control, it is necessary to designate the group No. For details, refer to the manual of each
optional controllers for centralized control.
9. FIELD SETTINGS
(1) Make sure the service lids are closed on the indoor and outdoor units.
(2) Field settings must be made from the remote controller in accordance with installation conditions.
• Settings can be made by changing the “Mode No”, “FIRST CODE NO.” and “SECOND CODE NO.”.
Refer to the installation manual attached to the remote controller.
• The “Field Settings” included with the remote controller lists the order of the settings and method of operation.
*Setting is made in all units in a group. To set for individual indoor units or to check the setting, use the mode
Nos. (with “2” in upper digit) in parentheses ( ).
19
9-1 SETTING AIR FILTER SIGN
• Remote controllers are equiped with liquid crystal display air filter signs to display the time to clean air filters.
• Change the SECOND CODE NO. according to Table 3 depending on the amount of dirt or dust in the room.
(SECOND CODE NO. is factory set to “01” for air filter contamination-light)
Table 3
Setting
Spacing time of display
air filter sign
Air filter
contamination-light
Air filter
contamination-heavy
Mode No.
FIRST CODE NO. SECOND CODE NO.
Approx. 200 hrs
01
10 (20)
0
Approx. 100 hrs
02
9-2 SETTING AIR FLOWRATE INCREASE MODE
• It is possible to raise set air flow (HIGH and LOW) from the field. Change the SECOND CODE NO. as
shown in Table 4 to suit your needs.
(SECOND CODE NO. is factory set to “01” for Standard.)
Table 4
Setting
Standard
A little increase
Increase
Mode No.
FIRST CODE NO.
13 (23)
0
SECOND CODE NO.
01
02
03
〈When using wireless remote controllers〉
• When using wireless remote controllers, wireless remote controller address setting is necessary. Refer to
the installation manual attached to the wireless remote controller for setting instructions.
10. TEST OPERATION
Make sure the service lids are closed on the indoor and outdoor units.
Refer to the installation manual of the outdoor unit.
• The operation lamp of the remote controller will flash when a malfunction occurs. Check the malfunction
code on the liquid crystal display to identify the point of trouble. An explanation of malfunction codes and
the corresponding trouble is provided in the installation manual of the outdoor unit.
If any of the items in Table 5 are displayed, there may be a problem with the wiring or power, so check the
wiring again.
Table 5
Remote controller display
“
” (under centralized
control) is lit up
“U4” is lit up
“UH” is lit up
No display
Content
• There is a short circuit at the FORCED OFF terminals (T1, T2).
• The power on the outdoor unit is off.
• The outdoor unit has not been wired for power supply.
• Incorrect wiring for the transmission wiring and/or FORCED
OFF wiring.
• The transmission wiring is cut.
• The power on the indoor unit is off.
• The indoor unit has not been wired for power supply.
• Incorrect wiring for the remote controller wiring, the
transmission wiring, and/or the FORCED OFF wiring.
• The remote controller wiring is cut.
• If “U3” is lit up, the malfunction code shows the test operation has not been performed yet.
20
Daikin US Corporation
375 Park Avenue, Suite 3308
New York, NY 10152
��
www.daikinac.com
info@daikinac.com
��
3PN01417-9V
EM04A013
(0407) HT
Download PDF