INSTALLATION
MANUAL
BP (Branch Provider) Unit
Models
BPMKS967A2B
BPMKS967A3B
Installation manual
BP (Branch Provider) Unit
Installationsanleitung
BP-Gerät (Abzweigdose)
Manuel d’installation
Unité BP (Fournisseur de branchement)
Montagehandleiding
BP (Branch Provider) Unit
Manual de instalación
Unidad BP (Proveedor de ramificaciones)
Manuale d’installazione
Unità BP (Branch Provider)
Εγχειρßδιο εγκατÜστασηò
ΜονÜδα BP (ΠαροχÝαò ÄιακλÜδωσηò)
English
Deutsch
Français
Nederlands
Español
Italiano
ΕλληνικÜ
BPMKS967B2B
BPMKS967B3B
Manual de Instalação
Unidade BP (Fornecedora de Ramificação)
Рóêоводство по óстановêе
BP-блоê (блоê провайдера ветви)
Portugues
Рóссêий
Umeda Center Bldg., 4-12, Nakazaki-Nishi 2-chome,
Kita-ku, Osaka, 530-8323 Japan
Noboru Murata
Manager Quality Control Department
Shiga, 1st of Oct. 2005
BPMKS967A2B, BPMKS967A3B, BPMKS967B2B, BPMKS967B3B
2SB63219-37N
Safety Precautions
•
Read these Safety Precautions carefully to ensure correct installation.
•
This manual classifies the precautions into WARNING and CAUTION.
Be sure to follow all the precautions below: they are all important for ensuring safety.
WARNIN G
CAUTION...............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.
...............Failure to follow any of WARNING is likely to result in such grave consequences as death or serious injury.
WARNING
• Installation should be left to the dealer or another professional.
Improper installation may cause water leakage, electrical shock, or fire.
• Install the air conditioner according to the instructions given in this manual.
Incomplete installation may cause water leakage, electrical shock, or fire.
• Be sure to use the supplied or specified installation parts.
Use of other parts may cause the unit to come to lose, water leakage, electrical shock, or fire.
• Install the air conditioner on a solid base that can support the weight of the unit.
An inadequate base or incomplete installation may cause injury in the event the unit falls off the base.
• Electrical work should be carried out in accordance with the installation manual and the national electrical wiring
rules or code of practice.
Insufficient capacity or incomplete electrical work may cause electrical shock or fire.
• Be sure to use a dedicated power circuit. Never use a power supply shared by another appliance.
• For wiring, use a cable length enough to cover the entire distance with no connection.
Do not use an extension cord. Do not put other loads on the power supply, use a dedicated power circuit.
(Failure to do so may cause abnormal heat, electrical shock or fire.)
• Use the specified types of wires for electrical connections from the BP unit to the indoor and outdoor units.
Firmly clamp the interconnecting wires so their terminals receive no external stresses. Incomplete connections or clamping may cause terminal
overheating or fire.
• After connecting interconnecting and supply wiring be sure to shape the cables so that they do not put undue force
on the electrical covers or panels.
Install covers over the wires. Incomplete cover installation may cause terminal overheating, electrical shock, or fire.
• If any refrigerant has leaked out during the installation work, ventilate the room.
(The refrigerant produces a toxic gas if exposed to flames.)
• After all installation is complete, check to make sure that no refrigerant is leaking out.
(The refrigerant produces a toxic gas if exposed to flames.)
• When installing or relocating the system, be sure to keep the refrigerant circuit free from 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 or rupture, resulting in injury.)
• During pump-down, stop the compressor before removing the refrigerant piping.
If the compressor is still running and the shut-off valve is open during pump-down, air will be sucked in when the refrigerant piping is removed,
causing abnormal pressure in the freezer cycle which will lead to breakage and even injury.
• During installation, attach the refrigerant piping securely before running the compressor.
If the compressor is not attached and the shut-off valve is open during pump-down, air will be sucked in when the compressor is run, causing
abnormal pressure in the freezer cycle which will lead to breakage and even injury.
• Be sure to establish a ground. Do not ground the unit to a utility pipe, arrester, or telephone ground.
Incomplete earth may cause electrical shock, or fire. A high surge current from lightning or other sources may cause damage to the
air conditioner.
• Be sure to install an earth leakage breaker.
Failure to install an earth leakage breaker may result in electric shocks, or fire.
CAUTION
• Do not install the air conditioner in a place where there is danger of exposure to inflammable gas leakage.
If the gas leaks and builds up around the unit, it may catch fire.
• This unit is for indoor use.
(If installing outdoors, place in a location away from wind and rain.)
1 English
System Layout
For installation of the indoor and outdoor units, follow the instructions in the Installation manual for each unit.
BP unit model
FOR 3 rooms : BPMKS967A3B, BPMKS967B3B
FOR 2 rooms : BPMKS967A2B, BPMKS967B2B
Do not connect more than 9 indoor units together.
Choose the BP unit type (2 rooms or 3 rooms)
according to the installation pattern.
Outdoor unit
Earth leakage
side piping
breaker
Indoor unit side piping
BP Unit
Power
Branch switch
overcurrent
breaker (fuse)
REFNET joint
KHRQ22M20T or
KHRP26M22T
(Can be purchased
separately.)
OUTDOOR UNIT
Power
voltage
Earth leakage
breaker
Branch switch
overcurrent
breaker (fuse)
Power
Power
voltage
BP Unit
BP Unit
INDOOR UNIT Max. 9 rooms
Outdoor
unit
RMX(K)S112
RMX(K)S140
RMX(K)S160
Note that the total indoor capacity per
BP unit is as shown in the table below.
BPMKS967A2B
BPMKS967B2B
BPMKS967A3B
BPMKS967B3B
Total capacity
of Indoor units
55-145.5 6
70-182 8
80-208 9
BP unit Maximum capacity
Maximum quantity
of Indoor units
142
208
The number of indoor
units which can be
connected varies
depending on the power
of the outdoor unit. See
the table left for details.
[Example]
For “FTXS50BVMB”, the
capacity of this indoor
unit is 50.
Power supply line (3 wires) ~ 50Hz 230V
*Outdoor unit and all BP units
require their own power supply.
Transmission line (2 wires
)
Power supply and transmission line (4 wires
)
Piping
Brazing connection
Flare connection
English 2
Accessories
Installation Manual
1
For outdoor unit side piping (gas)
2
(pipe joint)
For outdoor unit side piping (gas)
3
(pipe joint)
For outdoor unit side piping (liquid)
4
(pipe joint)
1pc.
1pc.
1pc.
1pc.
For indoor unit side piping (gas)
6
(pipe joint)
Hanger metal
7
Screws
8
Binding band
9
BPMKS967A3B
BPMKS967B3B
(For 3 rooms)
: 3pcs.
BPMKS967A2B
BPMKS967B2B
(For 2 rooms)
: 2pcs.
4pcs.
8pcs.
2pcs.
BPMKS967A3B
For Mindoor unit side piping (liquid)
5
(pipe joint)
1pc.
Heat insulation (2pcs. is 1set)
10
BPMKS967B3B
(For 3 rooms)
: 4sets
BPMKS967A2B
BPMKS967B2B
(For 2 rooms)
: 3sets
Items to be prepared in the field
• Connecting wires between BP unit and indoor unit (H05VV(*), 4 wires, 1.6mm or 2.0mm)
• Connecting wires (H05VV(*), 3 wires, 1.6mm or 2.0mm)
• Transmission wires (H05VV(*), 2 wires, 0.75mm² to 1.25mm²)
• Installation parts (hanging bolts: 4 × M10 or M8; nuts: 8; flat washers: 8)
• Screws for wall-mounting: 6 × M5
• Heat insulation (joint) [Thermal conductivity: 0.041 - 0.052W/mK (0.035 - 0.045kcal/mh°C) / thickness 13mm
(1/2 inch) or more / Heat resistance: 100°C or higher]
(*) Only in protected pipes, use H07RN-F when protected pipes are not use.
Specifications for local wiring power cord and branch wiring are in compliance with IEC60245.
Precautions for Selecting the Location
The BP unit is for indoor use.
Install in a location such as above a ceiling or behind a wall in accordance with the following conditions:
• That the unit is fully supported, and is in a location with little or no vibration.
• That the refrigerant pipes for the indoor and outdoor units can be repaired with ease, and that the units are placed well within
the distance from each other allowed by the pipe length.
• That there is nothing nearby that produces heat or steam (gas).
• When installing, that there is enough room for servicing the unit.
• Do not install in location that is hot or humid for long periods of time.
A location where the dry-bulb (DB) temperature around the BP unit reaches 60°C or higher.
• A well-ventilated area.
• Do not install near bedrooms. The sound of refrigerant flowing through the piping may sometimes be audible.
For restrictions on installation, refer to P5~6. “Installation”.
3 English
Installation
Example of connection
(Connection of 8 units heat pump system)
1
indoor unit
BP 1
Maximum
allowable
BP unit
A
refrigerant branch kit (refnet joint)
Between outdoor
and BP units
Total piping length
length
Allowable
height
Between BP and
indoor units
Between BP and
indoor unit
Between outdoor
and indoor units
Between outdoor
and BP units
Between BP and
BP units
Between indoor
and indoor units
Total piping length
1 room length
Difference in height
Difference in height
Difference in height
Difference in height
Minimum allowable length
∗1
Since the sound of refrigerant may
be transferred from the outdoor
unit to the indoor unit, make the
pipe length from the outdoor unit
to the first junction 5m or longer.
Piping length
Allowable length after the branch
∗2 Branch kit are recommended to
set as possible as near the BP
units.
c, d, e are recommended to be
as possible as short.
Piping length
Refrigerant branch kit selection
(refrigerant branch kits can only be used with R410A)
Piping size selection
Branch with refnet joint
a
H2
H1
Pipe length between outdoor and BP units ≤ 55m
[Example] a+b+c+d+e ≤ 55m
Piping length between BP and indoor units:
RMX(K)S112 ≤ 60m / RMX(K)S140 ≤ 80m / RMX(K)S160 ≤ 90m
[Example] RMXS140: f+g+h+i+j+k+l+m ≤ 80m
Piping length between BP and indoor unit ≤ 15m
[Example] f, g, h, i, j, k, l, m ≤ 15m
Difference in height between outdoor and indoor units (H1) ≤ 30m
Difference in height between outdoor and BP units (H2) ≤ 30m
Difference in height between BP unit and BP units (H3) ≤ 15m
Difference in height between indoor and indoor units (H4) ≤ 15m
Pipe length between outdoor and first refrigerant branch kit (refnet joint) ≥ 5m
[Example] a ≥ 5m
Piping length from first refrigerant branch kit (refnet joint) to indoor unit ≤ 40m
[Example] unit 8: b+c+m ≤ 40m
[Example] unit 6: b+e+k ≤ 40m
[Example] unit 3: d+h ≤ 40m
Refrigerant branch kit (refnet joint) name: KHRQ22M20T or KHRP26M22T
• Piping size (Outer diameter × minimum thickness)
Between outdoor unit and
first refrigerant branch kit
Between first refrigerant branch
kit and the other branch kit
Between refrigerant branch
kit and BP unit
Table A
Total indoor capacity Q
Qc, Qd, Qe ≤ 5.0kw
Qc, Qd, Qe > 5.0kw
∗Qc, Qd, Qe is total connected indoor capacity
∗Subscript c, d, e indicates the above symbol
[Example]
indoor 4: 2.5kW
indoor 5: 3.5kW
Qe = 11.0kW
indoor 6: 5.0kW
=> (Gas pipe) φ15.9 × 1.0 / (Liquid pipe) φ9.5 × 0.8
bc
A
fg
12
symbol
c, d, e
B
d
1
BP
h
H3
3
e
2
BP
ijk
456
Gas pipe Liquid pipe
a
b
φ19.1 × 1.0
φ15.9 × 1.0
See the table A
Gas pipe Liquid pipe
φ12.7 × 0.8
φ15.9 × 1.0
φ6.4 × 0.8
φ9.5 × 0.8
3
BP
lm
7
8
H4
φ9.5 × 0.8
φ9.5 × 0.8
English 4
Installation
• This unit may be installed suspended from the ceiling or mounted on the wall.
• This unit may only be installed, as shown in the diagram below. (The side should be facing upwards.)
However, it may be freely installed in any direction forward or back, and to the sides.
• Be sure to leave a 650mm square opening for service and inspection as shown in the diagram below, for both ceilingsuspended installation and wall-mounted installation.
• This unit “does not require drain treatment”.
• This unit may be installed with sides or facing forward (servicing direction).
• The piping for the indoor unit may be freely led around in directions , , or .
• The inclination of side must be within ±5 degrees forward or back or to the sides.
For 2 rooms
(product dimensions and attachment bolt pitch)
Wall-mounted
)
25
(
Indoor unit side
piping
25
254
(304)
Suspension bolt pitch
2×2-Brazing
73.5
23
57 95
Room A
(304)
Room B
Wiring clamp
45
2-I.D. φ15.9 CuT
(180)
2-I.D. φ6.4 CuT
Earth (M4) Earth (M4)
INDOOR UNIT SIDE OUTDOOR UNIT SIDE
Installation restrictions
Manufacturer’s label
Suspension bolt pitch
Terminal
(For Power supply)
178
4-Suspension bolt
(M8-M10)
322
Terminal (For A room)
Terminal (For B room)
Terminal (For transmission)
I.D. φ19.1 CuT
294 178
(650)
Wiring clamp
Electric box
2-Brazing
I.D. φ9.5 CuT
Standard accessories
197
(Installation and service space)
(Servicing space)
Min 390
(Servicing space)
Min 390
68
163
For indoor unit side (Gas)
O.D. φ15.9
For outdoor unit side (Gas)
Dimple
110
65
113
(Top surface)
73.5
23
107
O.D.
φ19.1
Min 300
(Servicing space)
The opening for Inspection
Servicing is needed opening
of 650mm square for
service and maintenance.
155
I.D. φ9.5
Cut line for
For outdoor unit side (Gas)
O.D.
90
φ15.9
(70)
85
I.D.
φ12.7
For outdoor unit side (Liquid)
(125)
30
Cut line for
I.D. φ12.7
O.D.
φ9.5
100
90
165
I.D. φ19.1
I.D.
φ6.4
45
For indoor unit side (Liquid)
Cut line for O.D. φ6.4
110
Cut line for
I.D. φ15.9
150
I.D. φ9.5
5 English
For 3 rooms
(product dimensions and attachment bolt pitch)
Wall-mounted
)
25
(
Indoor unit side
piping
25
254
(304)
Suspension bolt pitch
2×3-Brazing
73.5
23
(304)
57 95 95
Room A
Room B
45
57
Room C
Wiring clamp
3-I.D. φ15.9 CuT
(180)
3-I.D. φ6.4 CuT
Earth (M4) Earth (M4)
INDOOR UNIT SIDE OUTDOOR UNIT SIDE
Installation restrictions
Manufacturer’s label
Suspension bolt pitch
Terminal
(For Power supply)
178
4-Suspension bolt
(M8-M10)
322
Terminal (For A room)
Terminal (For B room)
Terminal (For C room)
Terminal (For transmission)
I.D. φ19.1 CuT
294 178
(650)
Wiring clamp
Electric box
2-Brazing
I.D. φ9.5 CuT
Standard accessories
197
(Installation and service space)
(Servicing space)
Min 460
(Servicing space)
Min 390
68
163
258
For indoor unit side (Gas)
O.D. φ15.9
For outdoor unit side (Gas)
Dimple
110
65
113
(Top surface)
73.5
23
107
O.D.
φ19.1
155
I.D. φ9.5
Cut line for
(70)
85
Cut line for
(125)
30
165
I.D. φ19.1
90
45
110
Cut line for
I.D. φ15.9
I.D. φ12.7
The opening for Inspection
Min 300
(Servicing space)
Servicing is needed opening
of 650mm square for
service and maintenance.
For outdoor unit side (Gas)
O.D.
φ15.9
90
I.D.
φ12.7
For outdoor unit side (Liquid)
O.D.
φ9.5
100
For indoor unit side (Liquid)
Cut line for O.D. φ6.4
150
I.D.
φ6.4
I.D. φ9.5
English 6
Installation of the Unit
Replacing the printed circuit board
1.
• This unit has two different installation types:
(1) ceiling-suspended type and (2) wall-mounted type.
• Choose the proper installation pattern according to the
location of installation.
• The installation location for the printed circuit board can
be changed.
• Procedure for changing the installation location of
the printed circuit board.
If the installation location of the printed circuit board
needs to be changed because of the installation
conditions, perform the following:
Caution
• Before doing any wiring on site, replace the printed circuit board.
1) Remove the screws and pull off the electrical equipment
cover.
To opposite
side
Indoor
unit side
pipe
Printed circuit board
Printed
circuit board
As-shipped condition After-location is changed
2) Remove 4 screws shown in the figure on the below, remove
the printed circuit board.
3) Remove the binding band (A) which holds the wires.
Binding band
(A)
Press on the protrusion
and pull out.
(B)
4) Remove the printed circuit board, and reattach as shown in
the figure.
Screw (M4×12L)
44P
Top surface of the unit
To opposite side
Electrical equipment
cover
Remove 4 screws. (M4×8L)
44
Printed circuit board
Lift the tabs.
5) Reattach the binding band to position (B).
Printed circuit board
(A)
(B)
Binding band
7 English
6) Attach the printed circuit board and electrical equipment
cover to the other side and secure with the screws.
Ceiling-suspended type
2.
Procedure:
1) Fix the furnished hanger metal with two screws .
(4 locations in total)
2) Using an insert-hole-in-anchor, hang the hanging bolt.
3) Install a hexagon nut and a flat washer (field supply) to
the hanging bolt as shown in the figure in the below,
and lift the unit to hang on the hanger metal.
4) After checking with a level that the unit is level, tighten
the hexagon nut.
* The tilt of the unit should be within ±5° in front/ back
and left/right.
7 8
Electrical
equipment
cover
Insert the
tabs fully.
Hanger metal 7
Printed circuit board
Top surface of the unit
Screws 8
Ceiling side
Hanging bolt (M10 or M8)
Six-sided nut (M10 or M8)
Wall-mounted type
3.
Procedure:
1) Fix the furnished hanger metal with two screws .
(4 locations in total)
2) Create a gap with the wall and screw in the temporary
screws (M5, field supply), and hang the BP unit.
3) After checking with a level that the unit is level, fix the
unit with screws (M5, field supply).
* The tilt of the unit should be within ±5° in front/ back
and left/right.
7 8
CAUTION
• Be sure to install the unit with the top surface up.
Do not install near bedrooms. The sound of refrigerant
•
flowing through the piping may sometimes be audible.
Flat washer
15~20
Hanging bolt
Nut
Flat washer
Hanger metal 7
BP unit
Screws 8
Screws 8
Hanger
metal 7
Screws (M5)
(field supply)
Temporary screw (M5, field supply):
Screw in temporarily after
opening a slight gap with
the wall.
Temporary screws:
attach and then hang the
unit on them. (2 screws)
Hanger metal 7
Screws (M5)
(field supply)
: screw for fixing. (4 places)
English 8
Connection of Refrigerant Piping
See the indoor and outdoor units installation manual for details on the size of connection piping to the indoor and outdoor units.
About brazing pipes on site
1.
1) Before brazing, remove the heat insulation.
2) Remove the blue-colored tape, and throw it out.
Heat
insulation
3) Wrap the pipes to be brazed with sufficient wet cloths so that brazing
does not affect the unit.
4) After brazing, use wet cloths or spray mist to sufficiently cool off all
pipes.
5) When brazing, be careful that the flame of the torch does not come in
contact with the unit.
(Since the inside of the unit is made of plastic, it may become
deformed or melt, destroying its heat-insulation performance.)
10
Wet cloth
brazing
Insulation of pipes
2.
1) Attach heat insulation to each pipe.
2) When attaching insulation to the pipes, use one-sided adhesive tape or
similar materials to thoroughly prevent air from entering the heat
insulation.
3) Eliminate any gaps in the heat insulation.
Unconnected pipes
3.
1) For pipes not yet connected to a room, pinch the end of the pipe and
braze them.
2) When brazing this area too, wrap the pipes with sufficient wet cloths to
protect the unit.
3) After brazing this area too, cool the pipes sufficiently.
4) Attach heat insulation, and use one-sided adhesive tape to thoroughly
prevent air from entering the heat insulation.
5) Cover the ends of the pipes with sufficient heat insulation.
One-sided adhesive tape
(field supply)
Heat insulation
(field supply)
brazing
One-sided adhesive tape
(field supply)
Wet cloth
brazing
Wet cloth
Heat insulation
Wet cloth
10
Heat insulation
(field supply)
9 English
• After brazing and system leakage check, connect a
heat insulation (field supply), and let it cure
completely following the procedure illustrated right.
Use the heat insulation with the following
specifications:
Thermal conductivity: 0.041-0.052W/mK (0.035-
0.045kcal/mh°C) / thickness 13mm or more
Heat resistance = 100°C or higher
• To ensure that the weight of the local interunit piping
does not bear on directly on the BP unit, secure it
near the BP unit using the clasp (field supply).
Heat insulation
(field supply)
Clasp
(field supply)
Heat insulation
10
Heat insulation
(field supply)
Clasp
(field supply)
BP unit
Indoor unit side piping Outdoor unit side piping
Place the heat insulation up against the BP unit to
prevent any gaps from forming between the two, and
wrap with masking tape as shown in the figure.
• When connecting indoor units, make sure to connect
refrigerant pipes and connection wires to the appropriate connection ports
marked with matching alphabets (A, B and C).
• When changing the routing direction, use the pipe joints and (accessories).
Use pipe joints , and to connect refrigerant pipes with different diameters.
Indoor unit side (Gas)
30
Cut line for I.D φ12.7
85
Pipe joint 6
Cut line for straight
(125)
(70)
Piping
(field supply)
When straight.
Indoor unit side (Liquid)
Cut line
for O.D φ6.4
Piping
(field supply)
I.D φ9.5
Connecting φ9.5
interunit piping
I.D φ9.5
Pipe joint 5
Brazing
3 4 5
Brazing
I.D φ12.7
125
Brazing
Piping
(field supply)
I.D φ9.5
Cut line for
I.D φ12.7
Pipe joint 6
Brazing
When the direction is changed.
2 6
Connection for φ15.9 piping. Connection for φ12.7 piping.
Piping
(field supply)
Room A
(Gas)
Room A
(Liquid)
Outdoor unit side (Gas)
Piping
(field supply)
I.D φ15.9
Brazing
Pipe joint 2
I.D φ19.1
Brazing
45(65)
Cut line for
I.D φ15.9
Hanger metal 7
Room B
Room C
(Gas)
Room B
(Liquid)
Room C
(Liquid)
〈View from the indoor unit〉
Pipe joint 2
110
When straight.
Cut line for
I.D φ15.9
Pipe joint 3
45
Cut line for
I.D φ15.9
Pipe joint 3
Brazing
Brazing
(Gas)
Piping
(field supply)
I.D φ12.7
Piping
(field supply)
I.D φ12.7
Outdoor unit side (Liquid)
Pipe joint 4
Piping
(field supply)
I.D φ6.4
Brazing
Connecting φ6.4
interunit piping
Connection for φ19.1 and φ15.9 piping.
When the direction is changed.
NOTE
When changing the direction of the piping to
something other than the above, bend the
piping on site.
Connection for φ12.7 piping.
English 10
Connecting the Wiring
Connection example of total system wiring
Powe r
Earth leakage
breaker
Branch switch
overcurrent
breaker (fuse)
Power
voltage
Ground
Outdoor unit
Earth leakage
breaker
Branch switch
overcurrent
breaker (fuse)
Power
voltage
Ground
16V
Powe r
BP unit
BP unit
BP unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
The following kind of wiring methods is okay for the power line.
Pattern 1
Powe r
voltage
N2
L2
N1
L1
N2
L2
N1
L1
N2
L2
N1
L1
BP unit
BP unit
BP unit
• Crossover wiring is possible
for the power line.
3
2
1
Pattern 2
Powe r
voltage
Powe r
voltage
Powe r
voltage
• It is also possible to supply
power from the BP units
themselves.
CAUTION
• Be sure to connect the power
line to L
• For crossover wiring, take the
line from L
connect it to L
other BP unit.
1 and N1.
2 and N2 and
1 and N1 on the
N2
L2
N1
L1
N2
L2
N1
L1
N2
L2
N1
L1
BP unit
3
BP unit
2
BP unit
1
Work procedure
1) Remove the screws and pull off the electrical equipment cover.
Electrical equipment
cover
Screw (M4×12L)
2) Tape is attached to the wire binding band. The purpose of the tape is to prevent small animals from entering the unit.
Only remove the tape from places where wiring it to be passed through.
CAUTION
If the tape is not replaced for
places where wiring will not pass
through, small animals may enter,
causing product malfunction.
The tape to
prevent
the entry of
small animals
Wire clamp
44P
The tape to prevent the entry of small animals
(tape is attached when unit is shipped to
prevent animals from entering the unit)
44
Wire clamp
The tape to
prevent the entry
of small animals
11 English
3) Follow the instructions on the wiring nameplate to connect the connection wires of indoor/outdoor units to terminal block
numbers. (1, 2, 3, F1
and F2) Always fix each ground wire separately with a ground screw. (See the figure below.)
NOTE: The terminal block numbers are arranged from top to bottom in order of 1, 2 and 3.
Peel the outer coating leaving
10mm from the wire clamp.
10mm
Wire
clamp
44 P
1
Room A
2
3
1
Room B
2
3
1
Room C
2
3
Example
〈For 3 rooms〉
Binding band 9
Secure the wires with binding band 9 to
prevent them from coming out if pulled
on from the outside.
F2
F1
N2
L2
N1
L1
44
Warning
Do not use tapped
wires,stand wires,
extensioncords, or
starbust connections,
as they may cause
overtheating, electrical
shock, or fire.
Transmission wire (To other BP unit: F1, F2)
2
to 1.25mm
1, N1)
1, F2 or to
Transmission wire (To other BP unit: F
outdoor unit: F
Wire clamp
For other BP unit (To L
1, F2)
H05VV(*), 2 wires
0.75mm
CAUTION
Mistakenly connecting the power
supply to this terminal block could
cause control operating malfunctions.
2
Connection wire for
indoor units.
H05VV(*), 4 wires
1.6mm or 2.0mm
When wire length exceed
10m, use 2.0mm wires.
Ground
*Fix each wire
separately.
Power supply wire
for indoor units.
H05VV(*), 3 wires
1.6mm or 2.0mm
(*) Only in protected pipes, use H07RN-F when protected pipes are not use.
Specifications for local wiring power cord and branch wiring are in compliance with IEC60245.
CAUTION
• All local interunit wiring must be secured using the wire
binding band over the insulation, as shown in the figure.
• When connecting the connection wires to the terminal
block using a single core wire, be sure to perform curling.
Problems with the work may cause heat and fires.
Wire binding band
4) Allow 300mm for the pulling-out section of harness.
Insulation
Safety breaker
16A or 15A
Earth leakage
circuit breaker
Power supply
~50Hz
230V
+300mm
of slack
+300mm
of slack
5) Return the electrical equipment cover to its original position, and fix it with the
screws.
Screw
(M4×12L)
Install the electrical
equipment cover.
English 12
Operating Test
Follow the “Operating test” as described in the installation manual of the outdoor unit.
If the BP unit does not operate normally during the test run, the error can be checked on the remote controller display for the indoor
unit.
Error codes displayed on the remote controller
Malfunction code Nonconformity during installation Remedial action
A9
J0
U4
U9
UJ
The BP Unit
Simple diagnosis can be done using the LEDs on the BP unit’s circuit board.
For details, see the label on the inside of the BP unit’s electrical equipment cover.
Electric expansion valve connector not
connected (BP unit)
Printed circuit board faulty
(BP unit)
Liquid and gas thermistor faulty
(BP unit)
Transmission error between BP unit
and indoor unit
Transmission error between outdoor
unit and other BP unit
Transmission error between outdoor
unit and this BP unit connecting with the
indoor unit of error code displayed
Please contact your dealer.E2
Connect correctly the interconnections between BP unit and
indoor unit.
Connect correctly the interconnections between outdoor and
other BP unit.
Connect correctly the interconnections between outdoor and
this BP unit connecting with the indoor unit of error code
displayed.
13 English
Two-dimensional bar code is a code
for manufacturing.
3P155380-1E M04B237D
(0701) HT
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