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2. Procedures for Installation (Electrical Work) of LonWorks Interface
Safety Precautions
＊ The following is intended for the installer responsible for
installation and test operations of the LonWorks Interface, and
should be carefully read before beginning.
＊ The precautions given in this manual consist of specific
"Warnings"
and
"Cautions."
safety-related information and are important for your safety, the
safety of others, and trouble-free operation of the system. Be sure
to strictly observe all safety procedures. The labels and their
meanings are as described below.
This symbol refers to a hazard or unsafe
procedure or practice which can result in
Warning
severe personal injury or death.
This symbol refers to a hazard or unsafe
procedure or practice which can result in
Caution
personal injury or product or property
damage.
※After installation is completed, perform a test run to check for
operating trouble. As you do, use the central control device
Operation Manual and explain operating procedures to the
customer. Then request that the customer store this manual
together with the central control device Operation Manual.
•
Be sure to arrange installation from the dealer where the system
was purchased or using a professional installer.
Electric shock or fire may result if an inexperienced person
performs any installation or wiring procedures incorrectly.
•
Please install and ensure construction according to Procedures
for Installation (Electrical Work) of LonWorks Interface.
•
Only a qualified electrician should attempt to connect this
system, in accordance with the instructions in this manual.
If the electrical circuit capacity is insufficient a danger of
electric shock and fire may be present.
•
Use the specified cables (type and wiring diameter) for the
electrical connections, and connect the cables securely. Run and
fasten the cables securely so that external forces or pressure
placed on the cables will not be transmitted to the connection
terminals. Overheating or fire may result if connections or
attachments are not secure.
•
Do the ground connection.
•
The installation location requires the use of a circuit breaker.
Failure to use a circuit breaker may result in electric shock or
fire.
•
Circuit breaker must be incorporated in the fixed wiring in
accordance with the wiring regulations. The circuit breaker must
be an approved 10-16 A, having a contact separation in all poles.
Included Parts
No.
(1)
Product manual
They
provide
important
Warning
Part
Qty
1
Installation Method
• The screws used to install the main unit must be provided by the
installer.
• Install the LonWorks Interface away from any sources of
electrical noise.
Wiring Specifications
• For the inter-unit control wiring use twin-core 0.5 – 2 mm
shielded cables and ground the shield on both side.
• For the LonWorks communication line cables, use twisted-pair
cables with a wire diameter of 0.51 mm or larger as
recommended by Echelon Corp.
Examples of cables recommended by Echelon Corp
Wire diameter
Cable type
24 AMG twisted-pair
0.51mm
(TIA568A category 5)
• Do not use the same cable for the inter-unit control wiring, the
LonWorks communication lines, and the power cable. Do not run
them through the same conduit or place the cables near one
another.
• Connect the cables so that there is no miswiring.
(Miswiring can cause malfunction.)
LonWorks Interface Structure
• This interface contains 4 LonWorks communication boards
(nodes).
• Up to 4 indoor unit groups (maximum 32 units) can be assigned
to 1 node.
Main circuit
board Node 3
Main circuit
board Node 2
Main circuit
board Node 1
Main circuit
board Node 0
Power
board
Total cable length
/AWG
Bus type
900m
/24
Power transformer
2
Free
450m
4
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