Miura EJ-210 User manual

OPERATION
MANUAL
Boiler Operation Terminal
EJ-210
Manual Code No.
E608-216-0640
Data Blow
Normal
Caution BP –TERMINAL
This document was formulated in Japan.
Comply with the regulations and standards of
the country of use regarding installation and
usage.
The specifications of products and
components may vary with country of use and
the site situation.
Contact your dealer or MIURA sales office for
further inquiry regarding this document.
INFORMATION IN THIS MANUAL MAY BE
CHANGED WITHOUT NOTICE.

Release date: December 2015

Important Safety Information
i
Important Safety Information
Before using the boiler operation terminal EJ-210, ensure that this Operation Manual is read and fully
understood; furthermore, the instructions given herein should be strictly observed during operation.
Within the boiler operation terminal EJ-210, there are high-voltage sections that could lead to electric
shock. These sections may cause accidents involving loss of life, fire, etc., unless this equipment is
handled in an appropriate manner.
In order to ensure that tasks undertaken during operation and maintenance of the boiler operation
terminal EJ-210 can be completed safely, it is critical that all dangerous and hazardous parts of this
equipment be confirmed in advance. Here at MIURA, it is practically impossible to anticipate all
potentially dangerous situations, and therefore, this Operation Manual deals only with known hazards.A
higher level of safety can be achieved by carefully observing the warnings and instructions set forth
herein.
Safety-related warnings are classified into the following 3 levels, and notification of these warnings is
provided within this Operation Manual and using warning labels(*) on the boiler operation terminal EJ-
210 itself.
Indicates an imminently dangerous situation which leads to serious
injury or death to the user, if the product is mishandled.
Indicates a situation which might cause serious injury or death to the
user, if the product is mishandled.
Indicates a situation which might cause minor injury to the user or
the occurrence of physical damage only, if the product is
mishandled.
If any part used in the product fails, contact your dealer or MIURA sales office to replace it with its
genuine part. Using parts of different models might reduce safety.
It should be noted that unauthorized alteration of the boiler operation terminal EJ-210 or repair
procedures other than those described herein can pose a serious safety risk. Never make any
modifications or repairs without MIURA’s permission.
DANGER
WARNING
CAUTION

Introduction
ii
Introduction
This document describes the methods of handling the boiler operation terminal EJ-210 (hereinafter
called “EJ-210”) to ensure its proper use.
Not only those who use the EJ-210 for the first time but also those who know the handling methods
should read this document carefully and understand the proper handling methods before use of the EJ-
210.
Furthermore, we also recommend that this Operation Manual be stored in a specially designated
location so that it can be referred to at any time to confirm the correct usage.
[Explanation of Notation]
The meanings of the symbols used in this manual are as shown below.
Indicates a prohibited action (what you must not do).
Indicates a possibility of electric shock when the product is handled with wet
hands.
Indicates an action to be taken according to an instruction (what to be
executed).
Indicates an action connecting a grounding wire.
NOTE
Describes the precautions to prevent failures of the EJ-210, points to perform
effective operation, and useful information to know.
Indicates the page of related information.

Definition of Terms
iii
Definition of Terms
Terms used in this document are summarized below. (Terms are indicated with an asterisk (*) in the
text.)
Term
Description
Alarm
Major or minor equipment anomaly, such as an Alarm, Caution, and
Notice.
Blowdown
Discharge of water contained in the boiler.
Boiler system operation panel
BP-201
Centralized monitoring device in the boiler room that offers MI control
functions for steam boilers.
Boiler with BL-model
controller mounted
MIURA3-position combustion control boiler with BL-model controller.
Boiler with XJ1-model
controller mounted
MIURA3-position combustion control boiler with XJ1-model controller.
Differential
Steam pressure difference providing an indicator for switching the
control condition for boiler control.
Header pressure
Internal pressure in the steam header.
High fire
A state where the boiler is operating at maximum combustion
performance.
Low fire
A state where the boiler is operating at approximately 50%* maximum
combustion performance.
(* The percentage varies depending on the model of boilers installed.)
MI control
Automatic operation of the number of boilers to provide the required
steam amount when multiple boilers are installed.
Online maintenance
MIURAmaintenance contract to communicate with the maintenance
office over the phone network.
Soot blow
Washing the interior of the economizer with water to remove soot.
Standby
A state where boiler combustion is stopped while the “OPERATION”
switch is ON.
NOTE
Contact your dealer or MIURA sales office for the boiler controller model.

Table of Contents
iv
Table of Contents
Important Safety Information ....................................................................i
Introduction..............................................................................................ii
Definition of Terms..................................................................................iii
SECTION 1: SAFETY.........................................................................1
1. Safety Regulations............................................................................ 1
2. Safety-Related Knowledge and Expertise......................................... 1
3. Protective Equipment........................................................................ 1
4. Prohibition of Unapproved Modification............................................. 1
5. Safety Precautions............................................................................ 2
5.1 Safety during Installation............................................................................2
5.2 Safety during Use of Equipment.................................................................3
5.3 Safety during Actions Taken before Ordering Repairs................................3
5.4 Safety during Transfer or Resale................................................................3
SECTION 2: OVERVIEW...................................................................4
1. Product Usage and Functions........................................................... 4
1.1 Basic Functions..........................................................................................4
1.2 Network Configuration................................................................................5
1.3 Specifications .............................................................................................6
2. Component Names and Functions.................................................... 6
SECTION 3: OPERATION..................................................................7
1. Using the Buttons.............................................................................. 7
1.1 Using the “Data” Button ..............................................................................7
1.2 Using the ▲/▼Buttons ............................................................................7
2. Details of the Status Monitor Mode ................................................... 8

Table of Contents
v
3. Details of the User Operation Mode.................................................10
3.1 Setting Steam Pressure ...........................................................................11
3.2 Setting the System Date and Time...........................................................12
3.3 Setting the Blowdown Notification Time ...................................................13
3.4 Setting the Soot Blow Notification Time....................................................14
4. Details of the Current Alarm Check Mode........................................15
5. Details of the Alarm History Mode....................................................16
6. Blowdown Notification .....................................................................17
7. Soot Blow Notification......................................................................18
SECTION 4: TROUBLESHOOTING................................................19
1. If the “Caution” Lamp Turns ON.......................................................19
2. Action to be Taken before Ordering Repairs....................................20
SECTION 5: STORAGE...................................................................21
1. Transfer or Resale...........................................................................21
2. Export..............................................................................................21
SECTION 6: DISPOSAL ..................................................................22
1. Disposal Method..............................................................................22
SECTION 7: WARRANTY................................................................23
1. Note Regarding Warranty................................................................23
2. Questions Regarding the Product and Operation Manual................23
3. If the Operation Manual is Lost........................................................23

SECTION 1: SAFETY
1
SECTION 1: SAFETY
1. Safety Regulations
Handling of the EJ-210 is comprised of operations associated with running of the equipment and
operations regarding maintenance.
Only those who have received a handling explanation with this document should operate the EJ-210.
<Precautions for installation and use> —Related laws and regulations
1) The table below shows part of the laws and regulations on installation and use. There are also prefectural and
municipal ordinances; therefore, contact the supervisory authority or competent authority for more information.
2) The details herein are based on the regulatory standards at the time of preparation.
3) The documents to be submitted and their destination vary depending on your equipment and facilities.
If you have any questions, contact your dealer, MIURA sales office, or the competent supervisory authority.
Related laws and
regulations
Form(s) to be
submitted
Destination
Submission timing
Remarks
N/A
—
—
—
2. Safety-Related Knowledge and Expertise
Handling of the EJ-210 is comprised of operations associated with the running of the equipment and
operations regarding maintenance. Accordingly, the EJ-210 must be handled by persons who have fully
read and understood this manual.
3. Protective Equipment
Wear a helmet, safety shoes, and other protective equipment depending on the work.
4. Prohibition of Unapproved Modification
It should be noted that unauthorized alteration of the EJ-210 or repair procedures other than those
described herein can pose a serious safety risk. Never make any modifications or repairs without
MIURA’s permission.

SECTION 1: SAFETY
2
5. Safety Precautions
5.1 Safety during Installation
During installation, observe the following safety information.
WARNING
Check that the power supply wiring of the EJ-210 is connected from the boiler
power supply.
Ensure that a dedicated power supply is used as the boiler power supply and
an earth leakage circuit breaker (with overcurrent protection) is installed for it.
During power source installation work, use a specified wire diameter for
connection and ensure that a ground is established.
Earth leakage
circuit breaker
(with overcurrent
protection)
Earth leakage
circuit breaker
(with overcurrent
protection)
Breaker
capacity
Wiring
Ground terminal

SECTION 1: SAFETY
3
5.2 Safety during Use of Equipment
During the use of equipment, observe the following safety information.
WARNING
Do not operate the power supply breaker with wet hands.
Failure to observe this precaution may cause electric shock due to high
voltage, resulting in injuries or death.
Do not place combustible materials inside the EJ-210.
Failure to observe this precaution may lead to fire due to ignition, resulting in
death.
5.3 Safety during Actions Taken before Ordering Repairs
During actions taken before ordering repairs, observe the following safety information. (Excerpt
from page 20)
WARNING
If any anomaly persists after completing the specified repairs, contact your
dealer or MIURA sales office.
Do not perform work other than that specified. Failure to observe this
precaution may result in injuries.
5.4 Safety during Transfer or Resale
During the transfer or resale of the EJ-210, observe the following safety information. (Excerpt from
page 21)
WARNING
Ensure that the EJ-210 is installed only in the specified condition and
connected to the specified peripheral equipment.
Failure to observe this precaution may result in injuries.

SECTION 2: OVERVIEW
4
SECTION 2: OVERVIEW
1. Product Usage and Functions
1.1 Basic Functions
Boiler MI control(*) function
The EJ-210 is installed on a steam boiler to provide MI control(*) using the boiler system operation
panel BP-201(*). For a steam boiler that allows combustion control by a pressure switch, connect
the EJ-210 contact output in series with the wiring to the pressure switch to switch between boiler
high fire(*), low fire(*), and standby(*) to provide MI control(*).
Boiler notification relay function
Under the online maintenance(*) contract, should a problem occur in the boiler, the EJ-210
automatically notifies a MIURA sales office to allow rapid action by maintenance personnel.
When a boiler alarm(*) is notified from the BP-201(*), the EJ-210 functions as a boiler notification
relay.
Boiler monitoring relay function
When a boiler alarm(*) is monitored by the BP-201(*), the EJ-210 functions as a boiler
communication relay.
NOTE
The boiler notification relay function and monitoring relay function only work for a boiler with BL-
model controller mounted(*) or a boiler with XJ1-model(*) controller mounted(*).

SECTION 2: OVERVIEW
5
1.2 Network Configuration
The details below are an example of a standard network connection.
The actual equipment connected, method of connection, etc. differ depending on the customer’s
system.
■Boiler system operation panel BP-201(*)
Monitors the operation status of all equipment in the boiler room
and communicates with a MIURAsales office. The panel also
performs boiler MI control(*).
■Once-through steam boiler
Water delivered to the tubes is heated by burner combustion.
Heated boiler water successively evaporates and the steam is
supplied to the load-side equipment.
■Steam header
■Boiler operation terminal EJ-210
Used for MI control(*) of steam boilers by BP-201(*). The
EJ-210 also acts as a relay for monitoring by BP-201(*)
and notification of boiler alarms(*).
■Feed water
tank
■Chemical
feeder
Supplies chemicals
that prevent boiler
corrosion.
■Water softener
Raw water is normally hard.
The water softener changes
hard water to soft water.
■Automatic monitoring
system for water
hardness leakage
Monitors the soft water
treated by the water
softener.

SECTION 2: OVERVIEW
6
Data Blow
Normal
Caution BP –TERMINAL
Display
“Data” button
Used to switch display items, clear
alarm(*) displays, and confirm
setting values.
P.7
“Blow” button
Used to clear the blowdown(*) notification.
P.17
Status lamps
The “Normal”lamp (green) turns ON
when the power is supplied and the
EJ-210 is functioning normally.
The “Caution”lamp (yellow) turns ON
when an alarm(*) occurs.
P.19
/buttons
Used to change parameters and
increase/decrease values in each
mode, and select individual letters.
P.7
1.3 Specifications
Item
Unit
EJ-210
Main
unit
Product name
—
Boiler operation terminal
Power supply
—
120 VAC, 50/60 Hz, single-phase
Required wire diameter for power
supply
mm2
2.0
Power circuit breaker capacity
A
5
Electrical consumption
VA
11 (max.)
Product mass (product weight)
kg
3.3
Overall dimensions (W × D × H)
mm
400 × 195 × 57
Voltage
fluctuations
+10% to -10% power supply voltage
Operation
environment
Temperature: 0 to 60°C
Humidity: 30 to 90% RH (no condensation or freezing)
M-NET3
communication
line
Shielded LAN cable (Cable length: Up to 100 m)
CAT 5 or above, single-wire STP straight cable
2. Component Names and Functions

SECTION 3: OPERATION
7
SECTION 3: OPERATION
1. Using the Buttons
1.1 Using the “Data” Button
Each time the “Data” button is pressed, the mode switches in the sequence: Status Monitor mode,
User Operation mode, Current Alarm(*) Check mode, and Alarm(*) History mode.
Status Monitor
mode
Mode to check the MI control(*) status such as header pressure(*) and
boiler steam pressure.
P.8
User Operation
mode
Mode to make settings of steam pressure, calendar, etc.
P.10
Current Alarm(*)
Check mode
Mode to check details of up to 5 current alarms(*) and the date and time
when the alarm occurred.
P.15
Alarm(*) History
mode
Mode to check details of up to 5 past alarms(*) and the date and time
when the alarm occurred.
P.16
1.2 Using the ▲/▼ Buttons
•Press the ▲ or ▼ button to switch display item.
•Press the ▲ button to increase the value, and
press the ▼ button to decrease the value.
Status Monitor mode
User Operation mode
Current Alarm(*) Check mode
Alarm(*) History mode
Data

SECTION 3: OPERATION
8
2. Details of the Status Monitor Mode
The Status Monitor mode can be used to check the MI control(*) operation status and the monitored
details.
Items presented in upper row of display
Display
MI control(*) operation status
Disabled
Condition when the boiler is stopped with the “OPERATION”switch OFF or
the “START”switch OFF.
Manual
Condition when pressure control is performed using the set pressure on the
boiler or the EJ-210 when manual operation is selected on the BP-201(*) or
when automatic operation is not possible under MI control(*).
Standby
Standby(*) condition due to the BP-201(*) systemwide standby function.
Program Standby
Standby(*) condition due to the BP-201(*) program standby function.
Emergency Stop
Standby(*) condition due to an emergency stop instruction from the BP-201(*).
Auto
Automatic operation condition due to MI control(*) by BP-201(*).
NOTE
If no button is pressed for approximately 4 minutes, the display automatically switches to the
Status Monitor mode and shows the “header pressure(*)” item.
If no button is pressed for approximately 10 minutes, the display turns OFF. Press any
button to turn ON the display again.
NOTE
The operation is as follows when “Manual”is displayed.
•For a boiler with BL controller mounted(*), a boiler with XJ1 controller mounted(*), or a
boiler with a steam pressure sensor mounted, pressure control is performed using the
set pressure that was set in the User Operation mode of the terminal.
•For a boiler that is not a boiler with BL controller mounted(*) and a boiler with XJ1
controller mounted(*), without a steam pressure sensor, pressure control is performed
using the boiler set pressure.
Upper row of display:
Boiler MI control(*) status
Auto
Header 115PSI
Lower row of display:
Selected monitored item

SECTION 3: OPERATION
9
Items presented in lower row of display
Monitored item
Example of lower row of display
Header pressure(*)
Header 115PSI
Boiler steam pressure
Boiler 115PSI
Calendar (date and time)
01/01/2010 00:00
Remaining time to blowdown(*) (NOTE 1)
Next B/Down 10 Hr
Remaining time to soot blow(*) (NOTE 2)
NXT S/Blow: 10 Hr
NOTE 1: Displayed only when the blowdown(*) notification time is set to a non-zero value in the User
Operation mode. It is not displayed when the blowdown(*) notification time is set to zero.
P.17
NOTE 2: Displayed only when the soot blow(*) notification time is set to a non-zero value in the User
Operation mode. It is not displayed when the soot blow(*) notification time is set to zero.
P.18
NOTE
•The “boiler steam pressure”item is displayed only for a boiler with BL controller
mounted(*), a boiler with XJ1 controller mounted(*), or a boiler with a steam pressure
sensor mounted.
NOTE
•Indicator Bblinking on the display notifies that blowdown(*) timing is reached.
P.17
•Indicator Cblinking on the display notifies that an alarm(*) has occurred. The current
alarms(*) can be checked in the CurrentAlarm Check mode.
P.15

SECTION 3: OPERATION
10
3. Details of the User Operation Mode
This steam pressure, current time, etc. can be set in the User Operation mode.
a) Press the “Data” button to select the User Operation
mode.
b) Press and hold the “Data” button for 2 seconds or
longer to switch to the User Operation mode.
Press the “Data” button to change the items in the
following order.
c) Press and hold the “Data” button for 2 seconds or
longer again to exit the User Operation mode.
NOTE
If no button is pressed for approximately 4
minutes while an item of the User Operation mode
is displayed, the display automatically switches to
the Status Monitor mode and shows the “header
pressure(*)”item. (In this case, changes to settings
made before the display switched are not
accepted.)
P.8
User OPR Mode
Press&Hold[DATA]
PRESS SET (L)
115PSI
Pressure setting (low)
Differential (low)(*)
Pressure setting (high)
Differential (high)(*)
Current time (month)
Current time (day)
Current time (year)
Current time (hour)
Current time (minute)
Blowdown(*) notification time
Soot blow(*) notification time
Data
Data
Data

SECTION 3: OPERATION
11
3.1 Setting Steam Pressure
Make the pressure settings for pressure control according to the boiler steam pressure during
manual operation.
P.8
a) Press the “Data” button to display the screen of
the steam pressure setting to change.
Setting item
Description
Steam pressure setting
Pressure setting (low)
Switches to low fire(*) operation if the steam pressure reaches or
exceeds the “Pressure setting (low)”.
Boiler returns to high fire(*) operation if the steam pressure
drops to “Pressure setting (low) –Differential (low)(*)”.
Differential (low)(*)
Pressure setting (high)
Switches to standby(*) if the steam pressure reaches or exceeds
the “Pressure setting (high)”.
Boiler returns to combustion if the steam pressure drops to
“Pressure setting (high) –Differential (high)(*)”.
Differential (high)(*)
b) Use the ▲ and ▼ buttons to change the
pressure setting.
c) When all changes are complete, press and
hold the “Data” button for 2 seconds or longer
to exit the User Operation mode.
•The operation above accepts the setting
changes.
d) Check that the pressure setting has changed.
NOTE
The pressure setting is displayed only for a boiler with BL controller mounted(*), a boiler
with XJ1 controller mounted(*), or a boiler with a steam pressure sensor mounted.
ｱﾂﾘｮｸｾｯﾃｲ (ﾃｲ)
0.75MPa
ｱﾂﾘｮｸｾｯﾃｲ (ﾃｲ)
0.74MPa
PRESS SET (L)
115PSI
PRESS SET (L)
114PSI
Data
Data

SECTION 3: OPERATION
12
3.2 Setting the System Date and Time
Set the present date and time.
a) Press the “Data” button to select the time
setting screen.
•The current month blinks.
The blinking position can be changed.
b) Press the “Data” button until the position to be
changed blinks.
c) Use the ▲ and ▼ buttons to change the value.
•Adjust the time in units of 1 minute.
•Set each item up to “Minute”.
d) When all changes are complete, press and
hold the “Data” button for 2 seconds or longer
to exit the User Operation mode.
•The operation above accepts the setting
changes.
e) Check that the set date and time are correct.
NOTE
•The current date and time must be set correctly because they are used for various
controls and functions. The date and time is set before the product is shipped. Ensure
that they are correct.
•The boiler date and time are automatically adjusted for a boiler with BL controller
mounted(*) or a boiler with XJ1 controller mounted(*).
ｹﾞﾝｻﾞｲｼﾞｺｸｾｯﾃｲ
'10/08/01 08:00
ｹﾞﾝｻﾞｲｼﾞｺｸｾｯﾃｲ
'10/08/01 08:00
ｹﾞﾝｻﾞｲｼﾞｺｸｾｯﾃｲ
'10/08/01 13:00
Current Time SET
08/01/2010 08:00
Current Time SET
08/01/2010 08:00
Current Time SET
08/01/2010 13:00
Data
Data
Data