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BACnet Gateway for VRF System
6.2 Wiring Requirements & Notes
6.2.1 Electrical Requirement
Use
Maximum
Power supply
cable
Minimum
Transmission
0.33 mm
cable
Ethernet cable
Fuse capacity
1.25 A
Before starting installation work, turn off the power of this unit and the connection destination. Do not turn on the power again
until installation is completed. Otherwise, it will cause electric shock or fire.
Use specified cables or accessory cables to connect to this unit.
Do not modify the cables to connect this unit other than those specified, do not use extension cables, and do not use
independent branch wiring. It may cause electric shock or fire.
Install the transmission cables securely to the terminal block. Confirm that external force is not applied to the cable. Use
transmission cables made of the specified cable. If intermediate connection or insertion fixing are imperfect, it will cause
electric shock, fire, etc.
When connecting the cables to this unit, route the cables so that the cover of this unit is securely fixed. If the cover is
imperfectly fixed, it may cause fire or overheating of the terminals.
Perform earth (ground) work positively. Do not connect the earth (ground) cable to a telephone cable, water pipe, or
conductor rod.
Always fasten the outside covering of the cables with the cable clamp. (If the insulator is chafed, electric leakage may occur.)
Perform all wiring works so that the user does not touch the wiring. Otherwise, injury or electric shock could result.
If any cable is damaged, do not repair or modify it yourself. Improper work will cause electric shock or fire.
Do not bind the remote controller cable and the transmission cable together with or parallel to the power supply cable of the
indoor and outdoor units. It may cause erroneous operation.
When performing wiring work, be careful not to damage the cable or injure yourself. Also, connect the connectors securely.
Loose connectors will cause trouble, heating, fire, or electric shock.
Install the indoor and outdoor units, power supply cable, transmission cable and remote control cable 1 m (40 in.) away from
television and radio to avoid distorted images and noise. Otherwise, a malfunction could result.
Perform wiring so that water does not enter this unit along the external wiring. Always install a trap to the wiring or take other
countermeasures. Otherwise it will cause trouble or electric shock or fire.
Confirm the name of each unit and name of each terminal block of the unit and connect the wiring in accordance with the
directions given in the manual so that there is no incorrect wiring. Incorrect wiring will damage the electric parts and cause
smoke and fire.
When installing the connection cables near a source of electromagnetic waves, use shielded cable.
Otherwise, a breakdown or malfunction could result.
The terminal screws and earth (ground) screws have different shapes. Be sure to install the screws in the correct locations. If
the screws are installed in the wrong locations, the circuit board could be damaged.
Note:
- Do not bind the power supply cable and transmission cable to avoid an erroneous operation.
- Use shield cable for transmission cable. The shield metal should be earthed (grounded).
- Install the disconnect switch to the easily accessible location.
- Check that an appropriate fuse (1.25A) is set.
- Before connecting cables, turn off the power of the VRF units connected to the gateway.
Size
2
1.25 mm
(16AWG)
2
0.5 mm
(20AWG)
2
(22AWG)
Copyright© 2021 Fujitsu General Limited - All rights reserved
Wire type
Type 60245 IEC
57 or equivalent
22AWG LEVEL4 (NEMA) nonpolar
2 core, twisted pair solid core
Shielded
Category 5 or Higher STP cable
with RJ45 connector
WARNING
CAUTION
INSTRUCTION MANUAL r1.4.0 eng
Remarks
1Ø AC208–240 V 50/60Hz, 2
Cable + earth (ground) [Always
earth (ground) the unit]
®
LONWORKS
compatible
cable
Ethernet cable
139/159
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