Z Boiler Miura ML2-200 User manual

ML2-200
Wate
r
-processing
Communication
Conve
r
sion Box
Operation Manual Code No. S855-080-3400
Ensure that this operation manual is fully read
and observed by all persons working with the
water-processing communication conversion
box.
Store this operation manual in a location where
it may be easily accessed by said persons.
OPERATION
MANUAL

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Thank you for choosing the ML2-200 Water-processing
Communication Conversion Box.
Assign responsibility
This operation manual provides a guide for those intending to operate the ML2-200
water-processing communication conversion box.
Place at least one person in charge of the ML2-200 before operation, and said
persons should fully read and understand this manual before using the ML2-200. In
addition, make sure that this operation manual is kept close at hand whenever working
with the ML2-200.
Makeup of this operation manual
This operation manual describes the purpose, functionality, pre-operation inspection,
makeup, and operation method of the ML2-200 Water-processing Communication
Conversion Box.
Note regarding product guarantee
This operation manual contains notes and warnings regarding operation methods and
safety. These notes and warnings apply only to the specific operation or procedure.
In addition, use only the operation methods described in this manual.
Failure to observe this precaution may cause an accident, and MIURA can accept no
responsibility in such a case.
Questions regarding the ML2-200 or manual
If you have any questions or queries regarding your ML2-200 or the content of this
operation manual, contact your local MIURA sales office.
(A list of contact points is provided on the back cover.)

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Table of Contents
1. Terminology............................................................2
2. Overview .................................................................3
Features.............................................................................. 3
Main Functions.................................................................... 3
System Configuration.......................................................... 3
3. Device Makeup .......................................................4
Overall View........................................................................ 4
Control Box Interior ............................................................. 4
4. Basic Precautions..................................................5
5. Pre-operation Inspection.......................................6
6. Operating the ML2-200...........................................7
Communication Conversion ................................................ 7
7. Specifications.........................................................8

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1. Terminology
The following indicators are used in this manual to ensure safe and efficient work.
Ensure that you fully understand the meaning of each and use the ML2-200
accordingly.
Failure to use the ML2-200 correctly
may lead to serious injuries or death of
the user.
Failure to use the ML2-200 correctly
may lead to injury of the user or to
property damage.
Important information to prevent
malfunction and ensure efficient work,
or information that will be useful during
operation of the ML2-200.
The number in this symbol
indicates the relevant page.
This symbol indicates
forbidden actions.
Specific details are presented
with the symbol.

WARNING
CAUTION
NOTE
Meaning of symbols

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2. Overview
Features
Using the ML2-200 Water-processing Communication Conversion Box, Colormetry
hardness monitors connected to DS-NET networks can also be connected to M-NET
networks
Main Functions
Communication conversion
This communication conversion box controls equipments connected to DS-NET
and also facilitates communication with the maintenance branch.
System Configuration
This diagram shows four boilers for demonstration purposes only.
Boilers
MAIFLEX MIURA Maintenance
branch
Colormetry
hardness
monitor
DS-NET
M-NET
ML2-200

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3. Device Makeup
Overall View
Control Box Interior
DIP switch
Fuse
Switching
power
supply
Communication
board
Rotary switch
Te r m i n a l
block
Varistor
assembly
SR FG
FF
N2 N1 N0 N2 N1 N0 FG
FG S1 S2
XD4 board

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4. Basic Precautions
Items to Check before Use
Check that the ML2-200 is installed correctly as described in
Section 5: Pre-operation Inspection. If any installation-related
problem is identified, contact a MIURA sales office immediately.
One specific person must be placed in charge of the ML2-200.
Said person must carefully read all of the safety-related precautions contained
within this operation manual, and once they have all been fully understood, must
operate and maintain the ML2-200 in accordance with them.
Do Not Customize or Modify
Customization or modification not recommended by MIURA (such as connecting to
ancillary equipment) may affect safety. Contact MIURA maintenance personnel
before customizing or modifying. Note MIURA will accept no responsibility for the
results of unapproved modification.
When Reselling or Relocating
Proper installation and ancillary equipment are necessary when using the ML2-200.
Be sure to contact a MIURA sales office, your local dealer, or a service center when
moving or reselling the ML2-200. Inappropriate installation or unsuitable ancillary
equipment may cause personal injury.
This operation manual must be read by all persons using the ML2-200. If reselling,
this manual must also be provided to the new user.
WARNING
All of the safety-related precautions contained within this operation manual
must be observed whenever operating the ML2-200 Water-processing
Communication Conversion Box.
Failure to observe these precautions may cause personal injuries.
6

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5. Pre-operation Inspection
Device Installation
Confirm whether the installation location is appropriate.
This communication conversion box has been designed for indoor use. Ensure
that it is installed level on a wall and in a location that is exposed neither to rain
nor to direct sunlight.
Electrical Work
Failure to observe electrical work warnings may lead to electrical leaks and electric
shock.
z Confirm whether a dedicated power source has been provided.
The main power supply must be provided with a dedicated earth-leakage circuit
breaker (fitted with an overcurrent protection).
Ensure that such a breaker is not shared with other equipments. Furthermore,
ensure that the power supply can remain constantly turned on.
z Confirm whether the device has been grounded.
At the very least, D-class grounding (with ground resistance of 100 Ωor less)
must be carried out at the ground terminal. Failure to observe this precaution can
lead to electric shock and malfunction.
WARNING
Before operating the ML2-200 Water-processing Communication Conversion
Box, check the points below to ensure correct installation. Do not use the
ML2-200 if it is installed incorrectly. Failure to observe this precaution may
cause serious accidents.
WARNING
The power-supply voltage must always be inspected. If this voltage does not
match the ML2-200 specifications, there is a danger that malfunction, burnout,
the outbreak of fire, and other dangerous situations may develop.

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6. Operating the ML2-200
Communication Conversion
Using the ML2-200, Colormetry hardness monitors connected to DS-NET networks
can also be connected to M-NET networks.
DS-NET Compatible Equipments
Equipment Format ROM version
Colormetry
hardness monitor CMU-224HE DE12-1040 and later
NOTE
If the message “Comm F: F090” is displayed on the screen of the Colormetry
hardness monitor, it is possible that communication is not taking place between
ML2-200 and Colormetry. In such a case, ensure that power is being supplied
to the ML2-200 and that DS-NET lines have been correctly connected.
WARNING
When inspecting wiring, turn off the main power for the equipment known to be
operating incorrectly. Follow the instructions given in the relevant operation
manuals regarding the procedure for eliminating the causes of alarms and
system notices. Any incorrect operation can lead to serious accidents.
When performing repairs, be sure to correctly follow the sequence described in
the operation manual. If the prescribed repair operations do not successfully
eliminate the problem, contact a MIURA sales office, your local dealer, or a
service center. Operations other than those specified may cause personal
injury.

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7. Specifications
Detailed Specifications
Item Unit ML2-200
Power Supply – Single-phase, 50 or 60-Hz, 100 to 200V AC
Rated Power
Consumption W 2
Operating Ambient
Temperature Range °C 5 to 50
Humidity Range %RH 20 to 90 (non-condensing)
Installation Style – Indoor wall mounting
Weight kg 2.0
External Dimensions mm 210 (W) × 60 (D) × 250 (H)
NOTE: In cases where this communication conversion box and other DS-NET
communication equipments are exposed to the risk of lightning surge as a
result of outdoor wiring and the like, an XG-900 communication surge
protector (sold separately) should be installed.