Mitsubishi Electric EW-50A Quick guide

Air Conditioning Control System
Centralized Controller
EW-50A/EW-50E
Before installing the controller, please read this Installation Manual carefully to ensure proper operation.
Retain this manual for future reference.
Installation and Instructions Manual
Safety notes are marked with WARNING
or CAUTION, depending on the severity
of possible consequences that may result
when the instructions are not followed
exactly as stated.
Proper installation is important for your
safety and proper functioning of the units.
Thoroughly read the following safety
precautions prior to installation.
Contents
1. Safety precautions ..................................................... 2
1-1. General precautions..............................................................2
1-2. Precautions for unit installation .............................................3
1-3. Precautions for electrical wiring ............................................3
1-4. Precautions for relocating or repairing the unit .....................4
1-5. Additional precautions...........................................................4
2. Introduction ................................................................ 6
2-1. Part names............................................................................6
3. Package contents....................................................... 8
4. Specifications ............................................................. 9
4-1. Product specifications ...........................................................9
4-2. External dimensions............................................................10
5. Installation .................................................................11
5-1. Items not included...............................................................12
5-2. Items sold separately ..........................................................12
5-3. Installation space ................................................................13
5-4. Installation procedures........................................................14
6. Wiring connections................................................... 17
6-1. Removing/reinstalling the service cover..............................17
6-2. Connecting AC power cables and M-NET transmission
cables..................................................................................19
6-3. Connecting the LAN cable ..................................................21
6-4. Confirming the LAN transmission delay time ......................21
7. Initial settings ........................................................... 23
7-1. Logging in to the Web Browser for Initial Settings ..............23
7-2. Initial settings on the Web browser .....................................23
7-3. Quick IP address (LAN1) setting.........................................24
7-4. Network settings on the Web browser ................................25
8. Test run .................................................................... 26
8-1. Collective operation ON/OFF..............................................26
9. External input/output ................................................ 27
9-1. External signal input/output function ...................................27
9-2. Pulse signal input function ..................................................29
10.Maintenance............................................................. 30
10-1. Inspection and maintenance .............................................30
10-2. Back up/import settings data.............................................31
10-3. Software update................................................................33
10-4. Software information .........................................................36
<ORIGINAL>

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1. Safety precautions
►Thoroughly read the following safety precautions prior to installation.
►Observe these precautions carefully to ensure safety.
►After reading this manual, pass the manual on to the end user to retain for future
reference.
►The user should keep this manual for future reference and refer to it as necessary. This
manual should be made available to those who repair or relocate the units. Make sure
that the manual is passed on to any future air conditioning system user.
►All electrical work must be performed by qualified personnel.
: indicates a hazardous situation which, if not avoided, could result in
death or serious injury.
: indicates a hazardous situation which, if not avoided, could result in
minor or moderate injury.
: addresses practices not related to personal injury, such as product
and/or property damage.
1-1. General precautions
Do not install the controller in areas where large amounts of oil, steam, organic solvents,
or corrosive gases (such as ammonia, sulfuric compounds, or acids), or areas where
acidic/alkaline solutions or special chemical sprays are used frequently. These substances
may significantly reduce the performance and corrode the internal parts, resulting in
electric shock, malfunction, smoke, or fire.
To reduce the risk of injury, electric shock, or fire, do not alter or modify the controller.
To reduce the risk of electric shock, malfunction, smoke, or fire, do not touch the electrical
parts or USB memory with wet fingers.
To reduce the risk of injury or electric shock, before spraying a chemical around the
controller, stop the operation and cover the controller.
To reduce the risk of burns, do not touch the electrical parts with bare hands during and
immediately after operation.
To reduce the risk of injury, keep children away while installing, inspecting, or repairing the
controller.
Test runs, inspection, and service must be performed by qualified personnel in accordance
with this manual. Incorrect use may result in injury, electric shock, malfunction, or fire.
If you notice any abnormality, stop the operation and turn off the controller. Continuing the
operation may result in electric shock, malfunction, or fire.
Properly install all required covers to keep moisture and dust out of the controller. Dust
accumulation and the presence of water may result in electric shock, smoke, or fire.
To reduce the risk of frostbite, burns, injury, or electric shock, keep the equipment out of
the reach of children.

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To reduce the risk of fire or explosion, do not place flammable materials or use flammable
sprays around the controller.
To reduce the risk of electric shock or malfunction, do not touch the switches or buttons
with a sharp object.
To reduce the risk of injury, electric shock, or malfunction, avoid contact with the sharp
edges of certain parts.
To reduce the risk of injury, wear protective gear when working on the controller.
Wear protective gear when working on the controller. High-voltage parts pose a risk of
electric shock, and high-temperature parts pose a risk of burns.
1-2. Precautions for unit installation
Do not install the controller where there is a risk of flammable gas leaks. If flammable gas
accumulates around the controller, it may ignite and cause a fire or explosion.
Properly dispose of the packing materials. Plastic bags pose a suffocation hazard to
children.
Take appropriate safety measures against earthquakes to prevent the controller from
causing injury.
To prevent injury, install the controller on a flat surface strong enough to support its
weight.
To reduce the risk of short circuits, current leakage, electric shock, malfunction, smoke, or
fire, do not install the controller in a place exposed to water or in a condensing
environment.
The controller must be installed by qualified personnel according to the instructions
detailed in this manual. Improper installation may result in electric shock or fire.
1-3. Precautions for electrical wiring
To reduce the risk of malfunction, smoke, fire, or damage to the controller, do not connect
the power cable to the signal terminal block.
To reduce the risk of malfunction, smoke, fire, or damage to the controller, do not apply a
power supply voltage in excess of that specified.
Properly secure the cables in place and provide adequate slack in the cables so as not to
stress the terminals. Improperly connected cables may break, overheat, and cause smoke
or fire.
To reduce the risk of injury or electric shock, switch off the main power before performing
electrical work.

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Electrical work must be performed by qualified personnel in accordance with local
regulations and the instructions provided in this manual. Only use specified cables and
dedicated circuits. Inadequate power source capacity or improper electrical work will
result in electric shock, malfunction, or fire.
To reduce the risk of electric shock, install an overcurrent breaker and an earth leakage
breaker on the power supply. To reduce the risk of electric shock, smoke, or fire, install an
overcurrent breaker for each controller.
Only use properly rated breakers (earth leakage breaker, local switch <switch + fuse that
meets local electrical codes>, moulded case circuit breaker, or overcurrent breaker). The
use of improperly rated breakers or the substitution of fuses with steel or copper wire may
result in electric shock, malfunction, smoke, or fire.
To reduce the risk of current leakage, overheating, smoke, or fire, use properly rated
cables with adequate current carrying capacity.
Proper grounding must be provided by qualified personnel. Do not connect the protective
ground wire to a gas pipe, water pipe, lightning rod, or telephone wire. Improper grounding
may result in electric shock, smoke, fire, or malfunction due to electrical noise
interference.
To reduce the risk of short circuits, electric shock, or malfunction, keep wire pieces and
sheath shavings out of the terminal block.
To reduce the risk of short circuits, current leakage, electric shock, or malfunction, keep
the cables out of contact with controller edges.
To reduce the risk of electric shock, malfunction, or fire, seal the gap between the cable
and the end of the conduit tube with putty.
To reduce the risk of injury, do not touch the burrs of the knockout holes.
1-4. Precautions for relocating or repairing the unit
The controller must be repaired or moved only by qualified personnel. Do not disassemble
or modify the controller. Improper installation or repair may result in injury, electric shock,
or fire.
To reduce the risk of short circuits, electric shock, malfunction, or fire, do not touch the
circuit board with tools or with your hands, and do not allow dust to accumulate on the
circuit board.
1-5. Additional precautions
To avoid damage to the controller, use appropriate tools to install, inspect, or repair the
controller.
To prevent unauthorized access, always use a security device such as a VPN router when
connecting to the Internet.

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Take appropriate measures against electrical noise interference when installing the
controller in hospitals or radio communication facilities. Inverter, high-frequency medical,
or wireless communication equipment as well as power generators may cause the air
conditioning system to malfunction. The air conditioning system may also adversely affect
the operation of these types of equipment by creating electrical noise.
To avoid malfunction, do not bundle power cables and signal cables together or place
them in the same metallic conduit.
To avoid damage to the controller, do not overtighten the screws.
To avoid deformation and malfunction, do not install the controller in direct sunlight or
where the ambient temperature may exceed 55°C (131°F) or drop below -10°C (14°F).
This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless they
have been given supervision or instruction concerning use of the appliance by a person
responsible for their safety. Children should be supervised to ensure that they do not play
with the appliance.

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2. Introduction
EW-50A/EW-50E is a total management system.
Any connected air conditioning systems can be operated or monitored on the Web browser. EW-50A/EW-50E can
also be used as an expansion controller of AE-200A/AE-200E.
By connecting AE-200A/AE-200E, up to 200 indoor units and other equipment can be controlled.
Hereafter, AE-200A and AE-200E, unless otherwise specified, will be called “AE-200.”
Hereafter, AE-50A and AE-50E, unless otherwise specified, will be called “AE-50.”
Hereafter, EW-50A and EW-50E, unless otherwise specified, will be called “EW-50.”
Note: A PC is required to monitor and operate the air conditioning units.
Note: The required licenses vary, depending on the functions to be used. Consult your dealer.
Note: For how to use the Web browser, refer to the Instruction Book (Integrated Centralized Control Web).
2-1. Part names
Item Description
LED
Power Lit in green Power ON
Unlit Power OFF
ON/OFF
Lit in green One or more air conditioning units are ON. *1
Blink in green One or more air conditioning units or other related equipment
are in error.
Unlit All air conditioning units are OFF. *1
Status
Blink in orange Startup error
Blink in blue Software update in progress
Blink in pink Software update failed
LINK/ACT1 Blink in orange Data transmission in progress (LAN1)
LINK/ACT2 Blink in orange BACnet®data transmission in progress (LAN2)
Push switch
ON/OFF Used to turn the connected air conditioning units and the other
related equipment ON and OFF all at once.
Reset Used to reboot the EW-50. (This will not affect the operation
status of the air conditioning units.)
USB port Unused
*1 The operation status of the other equipment are excluded.
USB port
(unused)
Power
LINK/ACT1
ON/OFF
LINK/ACT2
Status
Push switch ON/OFF
Service cover
Push switch Reset

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Item Description
SW1 IP addresses can be easily set with SW1. Refer to section 7-3 “Quick IP
address (LAN1) setting” for details.
LAN1 Connects to other units of equipment over the LAN via a HUB.
LAN2 Connects to the Building Management System over the LAN (BACnet®) via a
HUB.
CN7 (Pulse Input) *1 Connects to metering devices using the supplied connector.
CN6 Unused
CN4 Unused
CN5 (External I/O) *1
Connects to an external input/output adapter PAC-YG10HA-E.
(When connecting an external input/output adapter PAC-YG10HA-E, cut out
the knockout hole.)
CN21 (M-NET power jumper)
Connects to the M-NET power jumper to supply power (default).
* If another system controller is connected to the same M-NET system and the power
consumption coefficient is 1.5 or above, disconnect the M-NET power jumper to supply
power from the separately-sold power supply unit.
TB3 (M-NET A, B, S) (M3.5)
M-NET transmission terminal block
Connects to M-NET transmission cables from the outdoor unit.
(A, B: Non-polarized, S: Shield)
TB1 (Power source AC L/L1, N/L2) (M3.5) Connects to the power cable.
Ground (M4) Connects to the protective ground wire.
*1 Refer to chapter 9 “External input/output” for details.
* Back side with the service cover removed
LAN1
LAN2
CN7
CN6
(Unused)
CN4
(Unused)
CN5
TB3
Ground
CN21
TB1
SW1

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3. Package contents
The following items are included in the package.
Package contents Qty.
(1) EW-50 1
(2) Connector (CN6)
(Unused) 1
(3) Connector (CN7)
(Used for pulse input) 1
(4) L-fitting 2
(5) DIN rail attachment
(for attaching DIN rail of 35 mm (1-7/16 in) width) 2
(6) DIN rail auxiliary bracket 1
(7) Roundhead screw (M3 × 12) *1
(for fixing DIN rail attachment) 4
(8) Roundhead screw (M3 × 6) *1
(for fixing DIN rail auxiliary bracket or L-fitting) 4
(9) Cable tie 4
(Two are spare.)
(10) Installation and Instructions Manual (this manual) *2 1
(11)
CD-ROM *2
Installation and Instructions Manual (this manual)
License Classification List
Note
●The CD-ROM can only be played on a CD-drive or a DVD-drive. Do not attempt to play the
CD-ROM on an audio CD player as this may damage your ears and/or speakers.
●Each document is in PDF format. Viewing documents requires a computer with Adobe®
Reader®or Adobe®Acrobat®installed. “Adobe®Reader®” and “Adobe®Acrobat®” are
registered trademarks of Adobe Systems Incorporated.
1
*1 ISO metric screw thread
*2 For details about the apportioned electricity billing function, refer to the Instruction Book that comes with the “Charge” license.
Notes on the SD card installed on the EW-50
●Do not use the SD card installed on the EW-50 for any other equipment.

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4. Specifications
4-1. Product specifications
Item Specifications
Power supply 100–240 VAC ± 10%; 50/60 Hz Single-phase
M-NET power feeding coefficient 1.5
Network interface 100BASE-TX
Ambient
conditions
Temperature
Operating temperature
range -10°C – +55°C (+14°F – +131°F)
Storage temperature
range -20°C – +60°C (-4°F – +140°F)
Humidity 30%–90% RH (Non-condensing)
Dimensions (W × H × D)
172 × 209 × 92 mm
(6-13/16 × 8-4/16 × 3-10/16 in)
* 172 × 253 × 92 mm (6-13/16 × 10 × 3-10/16 in) when using L-fittings
Weight 1.7 kg (4 lbs)
Installation conditions Only in a metal control box indoors

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4-2. External dimensions
(1) When using L-fittings
(2) When using DIN rail
Unit: mm (in)
100 (3-15/16)
169 (6-11/16)
172 (6-13/16)
209 (8-4/16) 241 (9-8/16)
253 (10)
92 (3-10/16)
39
(1-9/16)
L-fitting
(supplied)
L-fitting
(supplied)
DIN rail attachment
(supplied)
46 (1-13/16) DIN rail auxiliary
bracket
(supplied)
DIN rail
23 (15/16)
150 (5-15/16)

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5. Installation
Test runs, inspection, and service must be performed by qualified personnel in accordance
with this manual. Incorrect use may result in injury, electric shock, malfunction, or fire.
Do not install the controller where there is a risk of flammable gas leaks. If flammable gas
accumulates around the controller, it may ignite and cause a fire or explosion.
Take appropriate safety measures against earthquakes to prevent the controller from
causing injury.
To prevent injury, install the controller on a flat surface strong enough to support its
weight.
To reduce the risk of short circuits, current leakage, electric shock, malfunction, smoke, or
fire, do not install the controller in a place exposed to water or in a condensing
environment.

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5-1. Items not included
The following items are required to install the EW-50.
Items not included Specifications
Locknuts and bushing Must be suitable for the conduit tube to be used.
Sleeved ring terminal
M3.5 ring terminal (for AC power cables (L/L1, N/L2) and M-NET transmission cables (A, B,
S))
M4 ring terminal (for protective ground wire)
AC power cable/Protective
ground wire
Type: Sheathed cable (should not be lighter than ordinary sheathed cable IEC 60227.)
(designation 60227 IEC 53)*1
Recommended type: VCT, VVF, VVR, or its equivalent
Size: 0.75 to 2 mm² (ø1.0 to ø1.6 mm), AWG 18 to 14
Protective ground wire color: green/yellow
* Use a wire with an appropriate diameter so that the wire can be fixed with the cable tie below the
terminal block. A diameter of 10 mm (25/64 in) is recommended.
Transmission cable
Type: Shielded cable
●CPEVS ø1.2 mm
●CVVS 1.25 to 2 mm²
* CPEVS: PE*2 insulated PVC*2 jacketed shielded communication cable
* CVVS: PVC*2 insulated PVC*2 jacketed shielded control cable
Relay (for external input)
Contact rating
Rated voltage: 12 or 24 VDC
Rated current: 10 mA or above
Minimum applied load: DC 1 mA
Relay (for external output)
Operation coil
Rated voltage: 12 or 24 VDC
Power consumption: Max. 0.9 W
Electrical wire for pulse input
Type: Copper wire that is suitable for the terminal block of the EW-50
Size
●Single wire: ø0.65 to ø1.2 mm, AWG 21 to 16
●Twisted wire: 0.75 to 1.25 mm², AWG 18 to 16
Watt-hour meter
Must output dry voltage contact pulse for each unit pulse.
Output pulse type: Semiconductor relay
Pulse width: 100 to 300 ms (Resting interval: Min. 100 ms)
Output pulse unit: 0.1/1.0/10/100 kWh/pulse
* An output pulse unit of 1 kWh/pulse or below is recommended.
LAN cable Category 5 or above straight cable (Max. 100 m (328 ft))
Switching HUB A communication speed of 100 Mbps or faster is recommended.
Overcurrent
breaker (fuse or
circuit breaker)
Fuse Rated current: 3 A
* When using a fuse, use it in combination with a switch (rated current: 3 A).
Circuit breaker Type: Bipolar (2P2E)
Rated current: 3 A
Earth leakage breaker
Type: Bipolar (2P2E)
Rated current: 3 A or above
Rated current sensitivity: 30 mA
Operation time: Max. 0.1 sec
PC Refer to the Instruction Book (Integrated Centralized Control Web) for PC requirements.
*1 For the U.S. and Canada: designation NEC (NEPA70) or CEC
*2 PE: Polyethylene, PVC: Polyvinyl chloride
5-2. Items sold separately
Items sold separately Model name Remarks
External input/output adapter PAC-YG10HA-E Required when using the external input/output function
Min. 100 ms
100 to 300 ms

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5-3. Installation space
The EW-50 must be installed inside the metal control box.
Either the supplied L-fittings or DIN rail attachments can be used for the installation.
Leave a space around the EW-50 as shown in the figure below.
50 (2) 50 (2) 50 (2)
When using L-fittings
50 (2) 50 (2)
When using DIN rail
Unit: mm (in)
50 (2)
50 (2)
150 (6)
100 (4)
50 (2)
150 (6)
100 (4)
DIN rail
DIN rail

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5-4. Installation procedures
Note
●Connect the necessary cables and wires before installing EW-50, referring to chapters 6 and 9.
●Do not install the unit where the unit may continuously receive vibration. The continuous vibration may cause the connectors
to disconnect.
5-4-1. Method 1: Installation using L-fittings
1. Have a metal control box ready.
2. Cut screw holes on the surface on which the EW-50 will be installed as shown in the figure below, taking into consideration
the installation space.
3. Attach the supplied two L-fittings to the EW-50 with the supplied roundhead screws (M3 × 6).
4. Properly install the EW-50 with the M4 screws (not supplied) inside the metal control box as shown in the figure below.
①Temporarily tighten the top M4 screws.
②Temporarily place the M4 screws through the screw holes at the top of the L-fitting.
③Tighten the bottom M4 screws.
④Tighten the top M4 screws.
Note
●The EW-50 to which the L-fittings are attached must be fixed to the metal control box with total of four M4 screws to prevent
it from falling.
●The surface on which the EW-50 will be installed needs to be strong enough to support its weight (1.7 kg (4 lbs) each).
100 (4)
M4
241
(9-8/16)
Unit: mm (in)
M4 screw
(not supplied)
Roundhead screw
(M3 × 6)
(supplied)
L-fitting
(supplied)
Inside the metal control
box
EW-50
①④
③
②

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5-4-2. Method 2: Installation using DIN rail
1. Have a metal control box ready.
2. Attach the supplied two DIN rail attachments to the EW-50 with the supplied roundhead screws (M3 × 12).
3. Attach the supplied DIN rail auxiliary bracket to the EW-50 with the supplied roundhead screws (M3 × 6).
4. Mount the DIN rail (not supplied) to the metal control box.
* Use a DIN rail of 35 mm (1-7/16 in) width.
Note
●To secure the strength, the screw pitch must be 200 mm (7-7/8 in) or less when DIN rail is mounted to the metal control box.
●The surface on which the EW-50 will be installed needs to be strong enough to support its weight (1.7 kg (4 lbs) each).
●Do not install the EW-50 where it may receive vibration.
●To avoid the contact of the DIN rail fixing screws with the DIN rail attachment, do not tighten the fixing screws at the shaded
areas in the figure below.
DIN rail attachment
(supplied)
Roundhead screw (M3 × 12)
(supplied)
Roundhead screw (M3 × 6)
(supplied)
DIN rail auxiliary bracket
(supplied)
EW-50
Max. 200 (7-14/16)
Unit: mm (in)
Do not tighten the fixing screw here.

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[Mounting/removing the EW-50 on/from the DIN rail]
(1) Mounting
1. Hook the upper side of the attachments to the DIN rail.
2. Push the lower part of the EW-50 until it snaps into place.
Note
●Ensure that the DIN rail attachments are fixed securely in place to the DIN rail.
(2) Removing
1. Pull the lower part of the EW-50 toward you.
2. Remove the EW-50 from the DIN rail.
Removing
Mounting

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6. Wiring connections
To reduce the risk of malfunction, smoke, fire, or damage to the controller, do not connect
the power cable to the signal terminal block.
To reduce the risk of injury or electric shock, switch off the main power before performing
electrical work.
Electrical work must be performed by qualified personnel in accordance with local
regulations and the instructions provided in this manual. Only use specified cables and
dedicated circuits. Inadequate power source capacity or improper electrical work will
result in electric shock, malfunction, or fire.
To reduce the risk of electric shock, install an overcurrent breaker and an earth leakage
breaker on the power supply. To reduce the risk of electric shock, smoke, or fire, install an
overcurrent breaker for each controller.
Proper grounding must be provided by qualified personnel. Do not connect the protective
ground wire to a gas pipe, water pipe, lightning rod, or telephone wire. Improper grounding
may result in electric shock, smoke, fire, or malfunction due to electrical noise
interference.
To avoid malfunction, do not bundle power cables and signal cables together or place
them in the same metallic conduit.
6-1. Removing/reinstalling the service cover
(1) Removing
1. Unscrew the two fixing screws on the service cover.
2. Remove the service cover.
Service cover
Fixing screws
Openings on the EW-50
Hooks on the service cover

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(2) Reinstalling
1. Insert the AC power cables and M-NET transmission cables into the openings, and then insert the hooks to the openings.
Note: Do not pinch the cables between the EW-50 body and the service cover.
2. Screw down the service panel with the two fixing screws.
3. Check that there are no pinched cables between the EW-50 body and the service cover.
Do not pinch the cables between the
EW-50 body and the service cover.
Opening for AC power cables
Opening for M-NET transmission cables

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6-2. Connecting AC power cables and M-NET transmission cables
TB7
EW-50
6-2-1. AC power cables and protective ground wire
1. Attach M3.5 sleeved ring terminals to the AC power cables, and attach an M4.0 sleeved ring terminal to the protective ground
wire.
2. Connect the AC power cables to the power supply terminal block, and connect the protective ground wire to the ground
terminal.
Note: Thread the protective ground wire through the guides to prevent the wire from moving when it is retightened to the ground terminal.
3. Fix the cables in place with the supplied cable tie.
Note
●Make the protective ground wire 25 mm (1 in) longer than the AC power cables (L/L1, N/L2).
● Tighten the terminal screws to a torque of 1.0 to 1.3 N•m.
●Properly fix the cable sheaths in place with the supplied cable ties. The distance between the sheath end and the ring
terminal must be 45 mm (1-13/16 in) or less.
M-NET transmission cables
for centralized control
AC power cables
Outdoor unit
Overcurrent breaker
Earth leakage breaker
100–240 VAC
45 mm
(1-13/16 in)
or less
Sheath
100–240 VAC
AC power cable
Cable tie (supplied)
Protective
ground wire
Guide
Guide
Cable sheath
Cable tie (supplied)

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6-2-2. M-NET transmission cables (Centralized control transmission cables)
1. Attach M3.5 sleeved ring terminals to the M-NET transmission cables (A, B, Shield).
2. Connect the M-NET transmission cables to the M-NET terminal block.
3. Fix the cables in place with the supplied cable tie.
4. When the power is supplied from the unit other than the EW-50, disconnect the M-NET power jumper from CN21.
Note
●Provide a single point ground for the shield of the centralized control transmission cable. (Provide the appropriate grounding
according to local standards.)
●When leaving the M-NET power jumper connected to CN21 on the AE-200/AE-50/EW-50, the M-NET S (shield) terminal of
TB3 is connected to the ground terminal block on the unit, and the ground is supplied via the protective ground wire.
●When disconnecting the M-NET power jumper from CN21 on the AE-200/AE-50/EW-50, provide a ground point at a power
supply unit (PAC-SC51KUA).
● Tighten the terminal screws to a torque of 1.0 to 1.3 N•m.
●Properly fix the cable sheaths in place with the supplied cable ties. The distance between the sheath end and the ring
terminal must be 45 mm (1-13/16 in) or less.
45 mm (1-13/16 in)
or less
Sheath
To outdoor unit
M-NET transmission cables A and B
Cable tie (supplied)
M-NET transmission cable S (Shield)
CN21
Cable sheath
Cable tie (supplied)