Azbil Infilex FC Series User manual

AB-6567
© 2005–2018 Azbil Corporation All Rights Reserved.
1
Specifications/Instructions
Infilex FC
Fan Coil Unit Controller
for SC-bus Communication
Overview
Infilex FC Model WY5205W is a DDC controller for FCU. In
addition to FCU ON/OFF operation, valve control, and fan
speed changeover, Infilex FC provides advanced controls
such as setback and interlock operations with OAHU.
Infilex FC in combination with room user terminal(s) allows
room occupants to operate FCU.
Infilex FC also communicates to our BMS. This enables to
centrally monitor and control the scheduled operation,
operating status, and temperature measurement of FCU.
BMS: Building management system
DDC: Direct digital control
FCU: Fan coil unit
OAHU: Outdoor air handling unit
Features
● Compact size:
Small sized body fits inside an FCU.
● Two kinds of FCU control:
Valve ON/OFF control and valve proportional control for
FCU are available.
● Advanced controls in combination with our BMS:
Infilex FC combined with our BMS allows FCU to
interlock with OAHU and to control mixing loss between
perimeter and interior zones.
● Standalone control:
Infilex FC is not only connected to our BMS but also used
as a standalone controller.
● Room user terminals:
Our user terminal (Neopanel or Neoplate) is connectable
to Infilex FC, allowing the room occupants to turn on/off
FCU and change temperature setting.
● Easy installation:
Screwless push-in terminals (for pipe temperature
sensor input, DI, FCU ON/OFF output, and control valve
output) and modular jacks (for communication, user
terminal connection, and temperature sensor input)
reduce wiring workload.
● CE Marking certified product:
Infilex FC Models WY5205W100_ and WY5205W201_
conform to all the applicable standards of CE Marking.

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Safety Precautions
Please read instructions carefully and use the product as specified in this manual. Be sure to keep this manual nearby for quick
reference.
Restrictions on Use
This product was developed, designed, and manufactured for general air conditioning use.
Do not use the product in a situation where human life may be at risk or for nuclear applications in radiation controlled areas.
If you wish to use the product in a radiation controlled area, please contact Azbil Corporation.
Particularly when the product is used in the following applications where safety is required, implementation of fail-safe design,
redundant design, regular maintenance, etc., should be considered in order to use the product safely and reliably.
• Safety devices for protecting the human body
• Start/stop control devices for transportation machines
• Aeronautical/aerospace machines
For system design, application design, instructions for use, or product applications, please contact Azbil Corporation.
Azbil Corporation bears no responsibility for any result, or lack of result, deriving from the customer's use of the product.
Warnings and Cautions
 WARNING Alerts users that improper handling may cause death or serious injury.
 CAUTION Alerts users that improper handling may cause minor injury or material loss.
Signs
 Alerts users to possible hazardous conditions caused by erroneous operation or erroneous use. The symbol inside 
indicates the specific type of danger. (For example, the sign on the left warns of the risk of electric shock.)
 Notifies users that specific actions are prohibited to prevent possible danger. The symbol inside  graphically
indicates the prohibited action. (For example, the sign on the left means that disassembly is prohibited.)
 Instructs users to carry out a specific obligatory action to prevent possible danger. The symbol inside ● graphically
indicates the actual action to be carried out. (For example, the sign on the left indicates general instructions.)
 WARNING
 Be sure to ground the product with ground resistance of less than 100 Ω.
Improper grounding might cause electric shock or malfunction.
 Detach the terminal cover only when wiring the product. Before detaching the terminal cover, be sure to turn off the
power to the product and all the connected devices. After wiring, be sure to reattach the terminal cover.
Failure to do so might cause electric shock.
 Before wiring and maintenance, be sure to turn off the power to the product.
Failure to do so might cause electric shock.
 CAUTION (1/2)

Install the product in a location that satisfies the operating conditions (temperature, humidity, power, vibration, shock,
mounting direction, atmospheric condition, etc.) as listed in the specifications and use the product within the operating
ranges as listed in the specifications.
Failure to do so might cause fire or device failure.
 Installation and wiring must be performed by qualified personnel in accordance with all applicable safety standards.
 All wiring must comply with applicable codes and ordinances.
 Connect the cables to the product power supply terminals with the terminal lugs or an equivalent method to assure
permanent connection.
 Be sure to provide a circuit breaker for the power to the product as the product does not have a power switch.

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 CAUTION (2/2)
 To connect the wires to the screw terminals, use crimp terminal lugs with insulation.
Failure to do so might cause fire or device failure due to short circuit.
 Firmly tighten the terminal screws.
Insufficient tightening of the terminal screws might cause fire or overheating.

For wiring, strip each wire insulation for the length specified in this manual. If the strip length is longer than the
specified, the stripped part of the wires will be exposed, causing electric shock or short circuit between adjacent
terminals. If it is shorter, the stripped part will not contact the connector.
 If more than the rated power voltage is applied to the product, replace the product with new one for your safety.
Failure to do so might cause fire.
 Do not disassemble the product.
Doing so might cause device failure.
 Dispose of this product as industrial waste in accordance with your local regulations. Do not reuse all or a part of this
product.
IMPORTANT:
This product adopts the screwless push-in terminals with the inclined surface. When a currently installed our
Intelligent FCU Controller (IFC) is replaced with Infilex FC, a screwdriver with short grip may be required for
wiring as IFC requires a smaller maintenance clearance than Infilex FC.

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Model Numbers
Base model
number Power Control type — DI Temperature input Description
WY5205 Infilex FC for SC-bus communication
W 100 V AC - 240 V AC
1 Valve ON/OFF control
2 Valve proportional control
0 Fixed
0 No DI point
1 Two DI points
0 RTD (Pt100)
K RTD (Pt1000)
Note:
Base model number is available with the following suffix numbers:
W1000, W100K, W2010, W201K
IMPORTANT:
Infilex FC cannot be connected to the system including SmartScreen or SCM (Sub Controller Master:
Model WY7222).
Part Numbers of Optional Auxiliary Device, Parts, and Tools
Item Part number Remark
Auxiliary
device
Temperature sensor for pipe surface
(to automatically change between
cooling and heating modes, for valve
ON/OFF and proportional control
types)
Part No. 81301851-001 1.3 m long
Part No. 81301851-002 2.5 m long
Parts Modular branch unit Part No. DY7203A0000 —
Modular extension unit Part No. DY7202A0000 5 pieces/set
Adapters for connecting to a Pt100
temperature sensor
Part No. DY7204A0003 For connection of Pt100 temperature sensor,
10 pieces/set
Connector cable for two terminals
(short cable)
Part No. DY7221A00X0 For connection of Pt 1000 temperature sensor,
10 pieces/set
Modular plug Part No. DY7207A0100 100 pieces/set
Mounting bracket (small) Part No. DY7208A0001 —
Mounting bracket (large) Part No. DY7208A0002 —
Tools Modular crimper Part No. DY7205A0002 —
Modular cable tester Part No. DY7206A0000 —

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System Configurations
Infilex FC for connection to our BMS
For BMS and devices that are compatible to Infilex FC, ask our salesperson.
Notes:
*1 Maximum number of Infilex ZM and/or DIF-II that can be connected to BMS varies depending on your system configurations.
*2 Maximum of 50 sub-remote units (also known as "sub controllers") such as Infilex VC and Infilex FC can be connected to Infilex ZM via
SC-bus.
*3 Up to two Neopanel (digital user terminal) or one Neoplate (analog user terminal) can be connected to one Infilex FC.
*4 Neopanel/Neoplate and a temperature sensor can be connected to the same Infilex FC.
Figure 1. System configuration example: Infilex FC integrated into our FX BMS
Infilex FC for standalone use
Note:
If Infilex FC for standalone use is set for BMS network connection, chilled/hot water cannot be detected by using the temperature sensor for
pipe surface.
Figure 2. Connection example: Infilex FC for standalone use with chilled/hot water valve and two Neopanel
Other connectable devices to NC-bus:
DIF-II*1/Energy meter
BACnet IP
BMS: Building management system
DIF-II: DGP (Data Gathering Panel) line interface-II
Client PC
BMS
Infilex AC
Model WY5117C
Infilex GC
Model WY5111
Infilex GD
Model WY5110
NC-bus (Max. 25 units and 500 m, but extendable up to 1000 m with the repeater module.)
Infilex FC
Model WY5205
SC-bus*2 (Max. 50 units and 1000 m)
Neopanel
Model QY7205
Infilex FC
Model WY5205
Temperature
sensor
Temperature
sensor*４
Neoplate*
3
,
4
Model QY7290
Infilex ZM*1
Model WY5122
Temperature
sensor
Neopanel
Model QY7205
Temperature
senso
r
Infilex VC
Model WY5206
SC-bus*2 (Max. 50 units and 1000 m)
Infilex ZM*1
Model WY5122
Infilex VC
Model WY5206
Neopanel
Model QY7205
Neopanel*
3
Model QY7205
Infilex FC
Model WY5205
Neopanel*
3
Model QY7205
Infilex FC
Model WY5205
Infilex VC
Model WY5206
Coil
Valve
: Modular plug
Modular
branch unit
Neopanel
Model QY7205
Neopanel
Model QY7205
Temperature sensor for pipe surface
: LAN cable
Fan
Infilex FC
Model WY5205

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Specifications
Basic specifications
Item Specification
Power Rated voltage 100 V AC to 240 V AC at 50 Hz/60 Hz
Operating voltage 85 V AC to 264 V AC
Power consumption Valve ON/OFF control type: 6 VA or less
Valve proportional control type: 7 VA or less
Environmental
conditions
Operating
conditions
Ambient temperature 0 °C to 50 °C
Ambient humidity 10 %RH to 90 %RH (non-condensing)
Altitude Max. 2,000 m
Vibration Max. 3.2 m/s² (at 10 Hz to 150 Hz)
Transport
/storage
conditions
Ambient temperature -20 °C to 60 °C
Ambient humidity 5 %RH to 95 %RH (non-condensing)
Vibration Max. 9.8 m/s² (at 10 Hz to 150 Hz) for transport
Max. 3.2 m/s² (at 10 Hz to 150 Hz) for storage
Mounting location Side surface of FCU, inside of the ceiling, inside of control panel, inside of a box
Mounting With two M4 x 10 mm long screws
Address setting Rotary switch setting
Weight Valve ON/OFF control type: 270 g (main unit only)
Valve proportional control type: 480 g (main unit only)
Materials Modified PPE, equivalent to UL 94 V-0
PPE: Polyphenylene ether
Input/output specifications (1/2)
Unit to be connected Input/output description Input/output specification
Temperature sensor Temperature input Measuring range 0 °C to 50 °C
Input signal RTD (Pt100)
RTD (Pt1000)*1
Temperature sensor for pipe
surface*2
(Part No. 81301851-001 /
81301851-002)
Pipe surface temperature input
(for cooling/heating changeover)
Measuring range 0 °C to 50 °C
External relay, etc.*2 Contact input
(for cooling/heating changeover)
Connectable output type Potential free contact (maintained)
* Min. applicable load: 0.1 mA or lower
Control valve*3 ON/OFF output
(for valve ON/OFF control type)
Floating proportional output
(for valve proportional control type)
Connectable output type Voltage N.O. contact
Contact capacity 0.8 A / 125 V AC or less
0.4A / 250 V AC or less
Min. applicable load 10 mA AC
* For the power of valve ON/OFF control
type, the power of the fan is used. Select
ON/OFF valve with the rated power equal
to the FCU power.
Fan Fan ON/OFF output
Fan speed changeover output
Valve ON/OFF control, valve proportional control types (M/H output)
Connectable output
type
Potential free N.O. contact
Contact capacity 3 A / 125 V AC or less
1.5 A / 250 V AC or less
Min. applicable load 10 mA AC
Valve proportional control type (L output)
Connectable output
type
Potential free N.O. contact
Contact capacity 6 A / 125 V AC or less
3 A / 250 V AC or less
Min. applicable load 10 mA AC
Neopanel
(digital user terminal)
Temperature setting
FCU ON/OFF, etc.
Transmission system Serial voltage transmission
Transmission speed 100 bps
RTD: Resistance temperature detector
Notes:
*1 Because the Pt1000 temperature sensor is a two-wire type sensor, the wire resistance will cause measuring error. For instance,
1.25 mm2 size wire causes approx. 0.1 °C measuring error every 10 m. Correct the measuring error by setting Infilex FC.
*2 Either the pipe surface temperature input by the temperature sensor for pipe surface or the contact input by the external relay is used for
cooling/heating changeover of Infilex FC for standalone use.
*3 Proportional control valve with less than 30-second operating time (for full stroke) is not connectable. Ask our salesperson for details.

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(2/2)
Unit to be connected Input/output description Input/output specification
Neoplate
(analog user terminal)
FCU switch Connectable output type Potential free contact (instantaneous) x 1
Applied voltage 12 V DC typ.
Applied current 10 mA DC typ.
LED output Output type Transistor output
Output current 10 mA DC
Output voltage 12 V DC typ.
Output limiting resistance 1.2 kΩ typ.
Temperature setting input Potentiometer input (1 kΩ to 10 kΩ)
Communication SC-bus Transmission system Serial voltage transmission
Transmission speed 4800 bps
Power — 100 V AC to 240 V AC (85 V AC to 264 V AC)
External switch, etc. DI (contact input) Connectable output type Potential free contact (maintained) x 1
Applied voltage 12 V DC typ.
Applied current 5 mA DC typ.
Wire specifications
Item End connection Wire specification Wiring length
Pt100 temperature sensor Connecter connection*1 LAN cable*2 Max. 50 m
Pt1000 temperature sensor Connecter connection*3 1.25 mm2 to 2.5 mm2 lead wires + connector
cable for two terminals (Part No. DY7221A)
Max. 50 m
Temperature sensor for pipe
surface
(for cooling/heating
changeover of Infilex FC
standalone use)
Screwless push-in terminal
connection
JIS CVV 1.25 mm2 or equivalent Max. 50 m
External relay, etc.
(for cooling/heating
changeover of Infilex FC
standalone use)
Screwless push-in terminal
connection
JIS CVV 1.25 mm2 or equivalent Max. 50 m
Control valve Screwless push-in terminal
connection
24 V AC JIS CVV 1.25 mm2 or equivalent Max. 50 m
100 V AC JIS CVV 2.0 mm2 or equivalent
Fan Screwless push-in terminal
connection
JIS CVV 2.0 mm2 or equivalent Max. 50 m
Neopanel Connecter connection*1 LAN cable*2 Max. 50 m
Neoplate Connecter connection*1 LAN cable*2 Max. 50 m
Communication Connecter connection*1 LAN cable*2 Max. 1 km (in total)
Power M3.5 screw terminal connection JIS CVV 2.0 mm2 or equivalent —
External switch, etc. Screwless push-in terminal
connection
JIS CVV 1.25 mm2 or equivalent Max. 50 m
JIS: Japanese Industrial Standards
Notes:
*1 For connector connection, use Bel Stewart Connector’s Plug: Model SS-37000-002.
This plug is also available at Azbil Corporation. (Part No. DY7207A0100, 100 pieces/set)
*2 LAN cable compliant with EIA/TIA-568 Category 3 or over (⌀0.5 mm x 4 pairs) is required.
For *1 and *2, the connector cable (regular cable: Part No. DY7210, short cable: Part No. DY7220) are available at Azbil Corporation.
*3 Use the short connector cable for two terminals (Part No. DY7221A). Other cables are not acceptable.

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100 37
139  1(interval between mounting screws)
150
120 45
189  1(interval between mounting screws)
200
Dimensions
The following figures are images of Infilex FC Pt100 input type. Dimensions of the Infilex FC Pt1000 input type are the same as
those of the Infilex FC Pt100 input type.
<Valve ON/OFF control type>
Figure 3. Dimensions (mm): Model WY5205W100X
<Valve proportional control type>
Figure 4. Dimensions (mm): Model WY5205W201X

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Installation
 CAUTION

Install the product in a location that satisfies the operating conditions (temperature, humidity, power, vibration, shock,
mounting direction, atmospheric condition, etc.) as listed in the specifications and use the product within the operating
ranges as listed in the specifications.
Failure to do so might cause fire or device failure.
 Installation and wiring must be performed by qualified personnel in accordance with all applicable safety standards.
Precautions for installation
● For installing Infilex FC, securely fix with the screws.
● Leave maintenance clearance as shown in Figs. 5 and 6.
● Vertically mount Infilex FC (upright). Be sure to mount it
in a location where the product indication on the front
surface can be checked.
Figure 5. Clearances for maintenance (mm): front view
● To replace a currently installed IFC (Intelligent Fan Coil
Unit Controller) and other former series of FCU controller
with Infilex FC, a screwdriver with long grip may not be
usable. In such a case, a screwdriver with short grip or
wiring before the installation is required.
Figure 6. Clearances for maintenance (mm): side view
● Mount Infilex FC upright unless it is protected in a
dust-proof housing. (See ‘B’ in Fig. 7.) If this product is
mounted with its front surface facing upwards, dust may
accumulate on the connectors. (See ‘A’ in Fig. 7.)
.
Figure 7. Mounding direction
Min. 200
Min. 120
Min. 140
Min. 7
0
100 mm long
screwdriver
200 mm long
screwdriver
 Same maintenance clearance is required
for the terminals on the lower part.
[1] 70 or more
[
2
]
140 or more
[1] 20 or more
[
2
]
20 or more
[1] 20 or more
[
2
]
20 or more
[1] 70 or more
[
2
]
140 or more
Note: [1] for 100 mm long screwdriver
[2] for 200 mm long screwdriver
Dust
Vertical
direction
Horizontal
direction
A. Bad B. Good

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Screw-mount directly on the mounting surface
1) Open two holes for M4 screws on the mounting surface.
Leave 139 mm  1 mm interval for valve ON/OFF control
type and 189 mm  1 mm interval for valve proportional
control type.
Figure 8. Mounting holes layout
2) Mount Infilex FC with two M4 screws.
Figure 9. Mounting with two M4 screws
3) Make sure that Infilex FC is securely fixed on the
mounting surface with the screws and does not come off.
IMPORTANT:
Check the length of the mounting screws. Long
screws may damage devices behind the mounting
surface.
Mounting screw tabs of Infilex FC are 5 mm thick
each. If you reuse the mounting screws for IFC
(Intelligent FCU Controller), the screws are
inserted 15 mm deeper inside the mounting
surface than IFC.
Mount on the ⌀9 mm (3/8 inches) threaded rod
To mount Infilex FC on a threaded rod (⌀9 mm), use two
cable ties.
1) Put cable ties through two holes on the screw tabs (one
cable tie for each screw tab) and tie to the threaded rod.
• Infilex FC mounted on the threaded rod may rotate. Do
not allow the tension on the cables when wiring.
• Instead of cable ties, two support brackets can be
used to mount Infilex FC on the threaded rod. Refer to
Fig. 10 for mounting with cable ties and with support
brackets
• Mounting bracket Part No. DY7208A0001 (small)/
DY7208A0002 (large) can also be mounted on the
threaded rod using cable ties or support brackets.
Figure 10. Mounting on a Ø9 mm threaded rod
2) Make sure that Infilex FC is securely fixed on the
threaded rod with cable ties or support brackets and
does not come off. Also, make sure that the cable ties or
the support brackets are firmly tied to the threaded rod.
Two mounting holes
for M4 screws
Valve ON/OFF control type:
139  1 mm
Valve proportional control type:
189  1 mm
Cable tie Support bracket
Screw tab Screw tab
189±1mm
139±1mm
Mounting
screw tab Mounting
screw tab
5 mm
5 mm

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Wiring
 WARNING
 Be sure to ground the product with ground resistance of less than 100 Ω.
Improper grounding might cause electric shock or malfunction.
 Detach the terminal cover only when wiring the product. Before detaching the terminal cover, be sure to turn off the
power to the product and all the connected devices. After wiring, be sure to reattach the terminal cover.
Failure to do so might cause electric shock.
 Before wiring and maintenance, be sure to turn off the power to the product.
Failure to do so might cause electric shock.
 CAUTION
 Installation and wiring must be performed by qualified personnel in accordance with all applicable safety standards.
 All wiring must comply with applicable codes and ordinances.
 Be sure to provide a circuit breaker for the power to the product as the product does not have a power switch.
 To connect the wires to the screw terminals, use crimp terminal lugs with insulation.
Failure to do so might cause fire or device failure due to short circuit.
 Firmly tighten the terminal screws.
Insufficient tightening of the terminal screws might cause fire or overheating.

For wiring, strip each wire insulation for the length specified in this manual. If the strip length is longer than the
specified, the stripped part of the wires will be exposed, causing electric shock or short circuit between adjacent
terminals. If it is shorter, the stripped part will not contact the connector.
 If more than the rated power voltage is applied to the product, replace the product with new one for your safety.
Failure to do so might cause fire.

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Wiring diagram: Valve ON/OFF control type (Model WY5205W100X)
IMPORTANT:
Power for the valve actuators is supplied from FCU via Infilex FC. Since the actuator power supply cannot be
separated from the FCU, the valves, unless the valve type is spring-return, will not be fully closed (in 0 %
position) when the fan is turned off. (A valve in fully closed position is exceptional.)
Note:
* For standalone use of Infilex FC in combination with Neoplate (as user terminal) and temperature sensor for pipe surface (for
heating/cooling changeover), use the Infilex FC valve proportional control type and wire ON/OFF valves as shown in Fig. 12.
Figure 11. Wiring diagram of Model WY5205W100X
Table 1. Wiring terminals for valve connection: Valve ON/OFF control type
Unit to be connected Terminals 4 and 5 Terminals 6 and 7
Chilled water valve Chilled water valve Leave unconnected.
Hot water valve Hot water valve Leave unconnected.
Chilled/hot water valve Chilled/hot water valve Leave unconnected.
Chilled water valve + hot water valve Chilled water valve Hot water valve
Chilled water valve + chilled/hot water valve* Chilled water valve Chilled/hot water valve
Note:
* Select the operating order of the valves by setting the parameter.
Infilex FC cannot recognize the status change of a fan coil unit (FCU) if Neoplate switches the FCU from OFF to L or M or H (ON)
mode. Therefore, Infilex FC will not detect chilled water/hot water using the temperature sensor for pipe surface. In a case that
the detection of chilled water/hot water using the temperature sensor for pipe surface is required, select the Infilex FC valve
proportional control type and change its function to the valve ON/OFF control by using the power supply status monitoring. Ask
our salesperson for details.
For the Infilex FC valve proportional control type serving the valve ON/OFF control, connect the valve 1 to the terminals 4 and 5
and the valve 2 to the terminals 7 and 8. Supply the power to the valve from a different source (not from Infilex FC).
Figure 12. Wiring of the valve to the Infilex FC valve proportional type serving the valve ON/OFF control
4 5 6 7 8 9
M M
Use
r
terminal*
Temperature
senso
r
FAN
100-240 V AC
Ground resistance:
100 Ω or lower

M

14 13 12 11 9 8 10
1 2 3 7 5 4 6
Connected to another Infilex FC
(for connection to BMS)
Connected to Infilex ZM or
another Infilex FC
(for connection to BMS)
Infilex FC
CN1 CN2 CN3 CN4
USER I/F
Pt100/
Pt1000 SC-bus
IN
SC-bus
OUT
16 15
Temperature sensor
for pipe surface*
(for standalone use)
Contact for cooling/heating
changeover
(for standalone use)
COM
L M H For fan ON/OFF output,
connect terminals 11 and 12
to FCU.
FCU
M

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Wiring diagram: Valve proportional control type (Model WY5205W201X)
IMPORTANT:
If Infilex FC is continuously operated, in a 24-hour operation system for instance, be sure to fully close/open the
valves (in 0 % / 100 % position) at least once a day for accurate operation. (The valves can be forcibly
opened/closed by setting the parameter.)
Notes:
*1 Provide a transformer when necessary.
*2 Connect the terminals 12 and 13 for standalone use.
Figure 13. Wiring diagram of Model WY5205W201X
Table 1. Wiring terminals for valve connection: Valve proportional control type
Unit to be connected Terminals 4, 5, and 6 Terminals 7, 8, and 9
Chilled water valve Chilled water valve Leave unconnected.
Hot water valve Hot water valve Leave unconnected.
Chilled/hot water valve Chilled/hot water valve Leave unconnected.
Chilled water valve + hot water valve Chilled water valve Hot water valve
Chilled water valve + chilled/hot water valve* Chilled water valve Chilled/hot water valve
Note:
* Select the operating order of the valves by setting the parameter.
FAN
16 15 13 12 11
1 2 3 5 4 6
100-240 V AC
Ground resistance:
100 Ω or lower

CN1 CN2 CN3 CN4
USER I/F
Pt100/
Pt1000
SC-bus
IN
SC-bus
OUT
Connected to
another Infilex FC
(For connection to BMS)
Connected to Infilex ZM
or another Infilex FC
(For connection to BMS)
Use
r
terminal
Temperature
senso
r
20 19
H
L M
FCU power
monitoring
circuit
10
8 7 9 14
23 21 24 22
DI  2
p
ts.
COM
Infilex FC
(For standalone
use
)
Temperature sensor for pipe surface
(for standalone use)
Contact for cooling/heating changeover
(for standalone use)
FCU
See Note 1.


Open
COM
Close
Open
COM
Close
Infilex FC
See Note 2. See Note 2.
For fan ON/OFF output,
connect terminals 13 and 14
to FCU.
DI1 DI2
COM
M M

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Recommended cables
For the cables and wires recommended for wiring Infilex FC, refer to the Wire specifications section.
Power supply wiring
Crimp M3.5 terminals on the power supply wires and connect them to the screw terminals of the product.
IMIPORTANT:
Do not apply 98 Ncm or larger torque for connecting the screw terminals.
Push-in terminal connection
Wires of the temperature sensor for pipe surface (only for Infilex FC for standalone use), DI, FCU ON/OFF output, and control
valve output are connected to the screwless push-in terminal block. Follow the procedure below for connecting these wires.
1) Remove the dust protective cover on the push-in terminals.
2) Strip the 5-6 mm insulation of the wire end.
Note:
* Scale is indicated on the front surface of Infilex FC. If the insulation stripped part is longer or shorter than 5-6 mm, it may get exposed or
may come off from the terminal.
3) Make sure that no wire fiber goes out of the wire end.
4) Connect the wire to the push-in terminal.
5) Gently pull out the wire to make sure it is completely held by the clamp.
6) Bind the cables with cable ties.
Notes:
* If an unbound cable is strongly pulled, Infilex FC may get damaged.
* Be sure to bind the modular cables separately from power cables.
IMPORTANT:
Do not position any connected cable on the Infilex FC
front surface, as shown in Fig. 15.
1. Press.
2. Tilt. 3. Insert.
4. Pull out.
Releasing the clamp:
When pressing the screwdriver, til
t
it along the curving surface inside
the square hole.
1. Insert a slotted screwdriver into a smaller square hole (for clamp release) of a
push-in terminal on Infilex FC front surface. At this time, insert the screwdrive
r
to the deep end (approx. 10 mm deep).
2. Tilt the screwdriver while pushing it into the hole. (Make sure the direction to tilt,
as shown in Fig. 14.)
When the screwdriver is proceeded to the deep end, the clamp is completel
y
released. The screwdriver remains in the inserted position even when you
release your hand from the screwdriver.
Notes:
* A slotted screwdriver with the blade 3.5 mm wide and 0.5 mm thick (straight
type) is acceptable. A screwdriver with the blade tip narrower than the shaf
t
may not be acceptable.
Appropriate screwdriver (an example):
Model 9900 (3 mm wide x 100 mm long) or Model 910 (3 mm wide x 75 mm
long) manufactured by Vessel Co., Inc.
* Since the terminal block has the inclined surface, required clearance fo
r
maintenance varies depending on the length of the screwdriver to be used.
Note that a long screwdriver (80 mm or longer) may not be usable for the Infile
x
FC replaced from IFC since IFC requires smaller maintenance clearance.
3. Insert the wire end (5-6 mm long stripped part) into a larger square hole to the
deep end.
4. Pull out the screwdriver while keeping the wire end inserted.
Note:
* For wiring of FCU ON/OFF output and control valve output, refer to the Wiring
diagram sections.
Figure 14. Connecting a wire to a screwless
push-in terminal
Good
cable bindin
g
Bad
cable binding
Figure 15. Good and bad cable binding.

AB-6567
15
Note for connecting wires with ⌀1.8 mm or smaller outer diameter to the push-in terminals
Wires with ⌀1.8 mm or smaller outer diameter connected to the push-in terminals may cause short-circuit due to dust
accumulated in clearance in the terminal.
To prevent short-circuit, put a tube* through the wire so that the terminal is covered. (See Fig. 16.) Separately order the tubes if
necessary.
Note:
* Tubes are commercially available and also available at Azbil Corporation. (Part No. 83167219-001, 6 pieces/set)
Connection of ⌀1.8 mm or smaller wires without tubes Connection of ⌀1.8mm or smaller wires with tubes
Figure 16. Connection of ⌀1.8 mm or thinner wires to the screwless push-in terminals with and without tubes
Wiring of user terminal / Pt100 temperature sensor to Infilex FC
User terminal and Pt100 temperature sensor are wired to Infilex FC with modular connection. For correctly crimping modular
plugs on a LAN cable, refer to the following.
Modular connector connection
Modular connector is composed of a modular plug (male) and a modular jack (female). Modular jacks are provided on Infilex FC,
and modular plugs will be crimped on LAN cables as required. Refer to the following procedure for crimping the modular plugs
on the LAN cables and connecting them to the modular jacks.
Note:
* For modular plugs, refer to Note *1 of the Wire specifications section.
1) Strip the outer sheath of a LAN cable end.
Be sure not to scratch or peel off any wire insulation when stripping the sheath.
Figure 17. Stripping the sheath
Make sure there are eight wires inside the sheath.
2) Align the eight wires in the order specified by the LAN cable manufacturer.
An alignment example of the LAN cable wires is shown in the table below.
Figure 18. Alignment of the wires
Note:
* The wire colors shown above may not agree with your LAN cable specification. Ask your LAN cable manufacturer for the latest specification.
LAN cable
Pin numbers 12345678
8 wires
LAN cable
Modular plug
pin number Wire alignment
Wire color code
1 Line 2 of pair 2 White and orange
2 Line 1 of pair 2 Orange
3 Line 2 of pair 3 White and Green
4 Line 1 of pair 1 Blue
5 Line 2 of pair 1 White and blue
6 Line 1 of pair 3 Green
7 Line 2 of pair 4 Brown and white
8 Line 1 of pair 4 Brown
Dust
Tube
⌀1.8 mm or thinner wire
⌀1.8 mm or thinner wire
Push-in terminal
Push-in terminal

AB-6567
16
3) Insert the aligned wires into a modular plug.
Figure 19. LAN cable insertion into a modular plug
Pin assignment of the modular plug in Fig. 19 is the image when the contacts and the cable stopper of the modular plug are
viewed from above.
Before inserting the wires into the modular plug, even out the length using a nipper. Note that the modular plug may not be
crimped on wires if the wires without the outer sheath are too long.
4) Crimp the modular plug using a crimper.
Insert the wires into the modular plug so that the contacts of the modular plug stick into the wires after crimping. Crimped
modular plug is secured on the LAN cable by the cable stopper of the modular plug. Check the contacts and the cable
stopper when crimping the modular plug.
5) Follow 1) to 4) for the other end of the LAN cable.
6) Check continuity of the LAN cable.
At the same time, make sure that the wires are aligned in the specified order, the modular plug contacts stick into the wires,
and that there is no cable damage or disconnection.
Note:
* Modular cable tester (Part No. DY7206A0000) facilitates the continuity check.
7) Connect the modular plugs to the modular jacks.
After successfully finishing the continuity check, insert a modular plug of the LAN cable into the modular jack of Infilex FC
and the other modular plug into the modular jack provided for connecting to the user terminal / Pt100 temperature sensor.
Note:
* Insert a modular plug until it clicks and gently pull the cable to check complete connection.
Cable stoppe
r
Contacts
Insert.
10 mm  3 mm
(For the recommended modular plug)
LAN cable
Modular plug
Pin numbers
8
7
4
5
3
1
2
6
Pin assignment of the modular plug

AB-6567
17
Wiring of Pt1000 temperature sensor to Infilex FC
Pt1000 temperature sensor is also wired to Infilex FC with modular connection, and the short connector cable for two terminals
Part No. DY7221A is required for wiring. Refer to the following for details.
1) Connect the modular plug of Part No. DY7221A to the connector CN2 of Infilex FC.
Figure 20. Connection of the connector cable for two terminals to Infilex FC
See the following for the pin assignment of the connector cable for two terminals Part No. DY7221A (between sides A and
B).
Side A Side B
Wire color Pin number
Orange 1
Orange and white 2
Green 3
Blue and white 4
Blue 5
Green and white 6
Brown 7
Brown and white 8
2) Splice the two wires (side B) of Part No. DY7221A and the wires from the Pt1000 temperature sensor with insulation
sleeves.
Note:
* The Pt1000 temperature sensor is a two-wire sensor.
Because wire resistance causes measuring error, longer cable, which has larger wire resistance, will cause greater measuring error.
Use Part No. DY7221A (0.1–1.0 m long), and extend the sensor cable (1.25–2.5 mm2 size) if needed.
CN2
Infilex FC
Model WY5205WXXXK
Short connector cable for two terminals
Part No. DY7221AXXXX
* "XXXX" differs depending on the cable length (0.1 m to 1.0 m).
Side A Side B

AB-6567
18
Optional Parts and Tools
Precautions for use
● The optional modular branch unit, modular relay unit,
adapter for connecting to a user terminal, adapter for
connecting to a Pt100 temperature sensor, short
connector cable for two terminals must be installed
inside junction boxes or in the control panel cabinet.
● For modular connection, a modular plug must be
inserted into a modular jack until it clicks.
Gently pull the modular cable to check that the modular
plug is locked in the modular jack after the connection.
Optional parts
● Modular branch unit:
Used to branch out the communication line for two user
terminals to be connected.
Figure 21. Modular branch unit: Part No. DY7203A0000
● Modular relay unit:
Used to extend the communication line by connecting to
another communication line.
Figure 22. Modular extension unit: Part No. DY7202A0000
● Adapter for connecting to a user terminal:
Used to connect analog user terminal (with fan speed
changeover function) to this product.
Figure 23. Adapter for connecting to a user terminal:
Part No. DY7204A0008
● Adapter for connecting to a Pt100 temperature sensor:
Used to connect a Pt100 temperature sensor to this
product.
Figure 24. Adapter for connecting to a Pt100 temperature sensor:
Part No. DY7204A0003
● Connector cable for two terminals:
Used to connect a Pt1000 temperature sensor to this
product.
Figure 25. Connector cable for two terminals: Part No. DY7221A
● Modular plug:
Crimped on the end of LAN cable for connection to a
modular jack.
Figure 26. Modular plug: Part No. DY7207A0100
● Tube:
Used when wires with ⌀1.8 mm or smaller diameter are
connected to the push-in terminals of Infilex FC.
Prepare the tubes supplied by Azbil Corporation shown
in Fig. 27 or the tubes that meets the specifications
shown in Fig. 28.
Figure 27. Tubes (Part No. 83167219-001, 6 pieces/set)
JCS: Japanese Electric Wire and Cable Makers' Association Standard
Figure 28. Tube (commercially available)
55.6
64
40.5
50  1
Interval between
mounting screws
Unit: mm
5.0
0.4
⌀3.4
⌀1.8
A
pplicable wire: JCS KV 0.5 mm2 Unit: mm
17.3
28.0 16.3
Unit: mm

AB-6567
19
● Mounting bracket (large and small sizes):
Used to replace IFC with Infilex FC. Extra mounting
holes will not be necessary by attaching Infilex FC to the
mounting bracket.
Small mounting bracket Part No DY7208A0001
for Model WY5205W100X (valve ON/OFF control type)
Figure 29. Small mounting bracket (Part No. DY7208A0001)
Large mounting bracket Part No. DY7208A0002
for Model WY5205W201X
(valve proportional control type)
Figure 30. Large mounting bracket (Part No. DY7208A0002)
Optional tools
● Modular crimper:
Used to crimp a modular plug on a LAN cable.
Figure 31. Modular crimper: Part No. DY7205A0002
 Modular cable tester:
Used to check continuity of a LAN cable with modular
plugs crimped on.
Figure 32. Modular cable tester: Part No. DY7206A0000
100
71.5
38
20 10
195 151 138 181
Two M4Two M4
M4
4.5
(two holes)
5.5
(three holes)
4.5
M4
100
82
38
10
240
151
189
M4
4.5
(two holes)
5.5
(three holes)
4.5
M4
Three M4
139
225

AB-6567
20
Software Details
(1/3)
Item Function Description Remarks
Operation
(available for valve
ON/OFF control and for
valve proportional
control types)
FCU ON/OFF Turns on/off the fan coil units (FCU) by operating
the BMS client PC, digital input (DI), or the user
terminal.
- Each Infilex FC can individually turn
on/off the FCU.
- The latest user terminal/BMS client
PC/DI operation is effective.*2
- FCU ON/OFF function using the user
terminal can be disabled by the BMS
client PC.
- Once FCU ON/OFF function is set, you
can not turn on the Setback function
with the user terminal. (The user
terminal allows you to operate either
FCU ON/OFF or FCU ON/Setback ON.)
Setback Adds/Subtracts the setback value to/from the set
temperature.
Switches to the Setback operation by operating
the BMS client PC or the user terminal.
The setback value is preset at Infilex FC.
- Each Infilex FC can individually change
the set temperature for the setback
operation.
- The latest user terminal/BMS client
PC/DI operation is effective.
- Setback function using the user terminal
can be disabled by the BMS client PC.
- Once Setback function is set, you can
not turn off the FCU with the user
terminal. (The user terminal allows you
to operate either FCU ON/Setback ON
or FCU ON/OFF.)
Temperature setting Changes the set temperature by operating the
BMS client PC or the user terminal.
- The latest user terminal/BMS client PC
operation is effective.*3
- High/low limit of the setpoint is set by the
BMS client PC.
- Dual setting is available. *4
FCU interlocking
with OAHU*1
Interlocks the ON/OFF operations of the FCU with
those of the outdoor air handling units (OAHU) if
the FCU and OAHU are mixed in the same group.
One Infilex ZM controls up to four
groups.
- Do not set the OAHU interlocking with
FCU function when you set the FCU
interlocking with OAHU function.
- Do not operate FCU ON/OFF with the
user terminal when you set the FCU
interlocking with OAHU function.
OAHU interlocking
with FCU*1
Interlocks the ON/OFF operations of the OAHU
with those of the FCU if the OAHU and FCU are
mixed in the same group, when any of FCU in the
group is turned on.
- One Infilex ZM controls up to four
groups.
- Do not set the FCU interlocking with
OAHU function when you set the OAHU
interlocking with FCU function.
Control
(available for valve
ON/OFF control type)
Temperature control Controls ON/OFF valves so that the actual
(measured) temperature matches the preset
temperature. *5
—
Fan speed control Controls fan speed at multiple speed levels in
response to the difference between the actual
temperature and the preset temperature. Fan
speed levels are selectable from
L/M/H(low/medium/high) type or L/M/H/OFF type.
Fan speed control function is available
when the fan speed is set to AUTO.
When L, M , or H fan speed is manually
set, the set fan speed is maintained.
Control
(available for valve
proportional control
type)
Temperature control PID-controls floating valves so that the actual
(measured) temperature matches the preset
temperature. *5
—
Noise control Shut off the valves when their position reaches or
reaches below the specified to prevent the water
flushing noise.
—
Fan speed control Controls fan speed at multiple speed levels in
response to the difference between the actual
temperature and the preset temperature.
Fan speed levels are selectable from
L/M/H(low/medium/high) type or L/M/H/OFF type.
Water- or airflow-priority control*6 is selectable
according to what is needed.
Fan speed control function is available
when the fan speed is set to AUTO.
When L, M , or H fan speed is manually
set, the set fan speed is maintained.