Miura EJ-210 Installation Manual Download Page 8 | Manualshive

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Miura EJ-210 Installation Manual Download Page 8

Document No.: E20-018-00

4

I/O board

RS-422

communication

conversion circuit

board EC11

CPU board

OPR board

Switching power

supply

Indicators and buttons

3.

COMPONENT NAMES

3.1.

Names of Indicators and Buttons

3.2.

Layout and Names of Internal Circuit Boards

Data

Blow

Normal

Caution

BP

–

TERMINAL

Display

“Data” button

“Blow” button

Status lamps

▲/▼ buttons

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Summary of Contents for EJ-210

Page 1: ...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...

Page 2: ...N or NOTE in order of severity 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 serio...

Page 3: ...llation inside the Control Box 8 5 3 Installing RS 422 Communications Equipment 8 5 4 Precautions when Installing the Steam Pressure Sensor 9 6 WIRING 10 6 1 Precautions 10 6 2 Wiring Procedures 10 6...

Page 4: ...in various standards They are indicated with an asterisk in the text Term Description AWM2840 Shielded wire defined in UL Style No 2840 CV wire Power cable defined in JIS C 3605 FCPEV Twisted pair ca...

Page 5: ...the grounding wire 3 Connect the power supply wiring from the boiler power supply Ensure that an earth leakage circuit breaker with overcurrent protection is installed in the boiler power supply line...

Page 6: ...welded nut For installation M NET3 communication line wire inlet Steam pressure sensor wire inlet Power supply signal wire inlet 2 OVERALL DIMENSIONS 2 1 EJ 210 Main Unit Item Unit Specification Power...

Page 7: ...ange 20 80 C Connection R1 4 Moisture and water resistance JIS D0203 S2 Output 1 5 VDC Overall accuracy at 1013 hPa 3 FS 20 70 C 4 FS 70 80 C 5 FS 80 90 C Gray Shield Black Power supply ground White V...

Page 8: ...it board EC11 CPU board OPR board Switching power supply Indicators and buttons 3 COMPONENT NAMES 3 1 Names of Indicators and Buttons 3 2 Layout and Names of Internal Circuit Boards Data Blow Normal C...

Page 9: ...he boiler The RS 422 communication conversion circuit board EC11 has to be installed on the CPU board on the boiler side 2 Boiler allowing installation inside the control box If a boiler allows the MI...

Page 10: ...s steam or condensation Check that condensation along steam piping cannot fall on the main unit of the EJ 210 During installation do not touch circuit boards inside the main unit with bare hands Take...

Page 11: ...pplied to secure the EJ 210 NOTE 1 Use only the screws supplied If other screws are used they may contact and damage the circuit board NOTE 2 Do not remove the rubber feet from the EJ 210 Removing the...

Page 12: ...for more details A parts kit is required to install the EJ 210 inside a control box Contact a MIURA sales office for more details 5 3 Installing RS 422 Communications Equipment For a boiler that has...

Page 13: ...gauge install the steam pressure sensor close to the boiler pressure gauge Install the steam pressure sensor vertically Determine the installation position and perform wiring so that water such as ste...

Page 14: ...ual to or larger than the power supply wire diameter Provide Japanese D type grounding or better 2 Wiring of signal wires The wires used as signal wires and terminal processing must conform to 6 4 Wir...

Page 15: ...ight cable 100 HUB to equipment Procured on site Steam pressure sensor wire AWM2840 3 core shielded cable 2 Supplied as optional extra NOTE 1 The RS 422 communication line wire is required for a boile...

Page 16: ...details When MIURA standard Sequence are used refer to 7 EXAMPLES OF WIRING NOTE 2 When the EJ 210 is connected to MIURA boilers without No 66 terminal short circuit the No 66 and No 6 terminals 6 5 2...

Page 17: ...he EJ 210 to the RS 422 communication conversion circuit board EC11 that is connected to the boiler side CPU board Figure 6 3 Wiring of RS 422 communication line wires NOTE 1 Connect the shield of the...

Page 18: ...efully read the Installation Manual for the M NET3 communication system Perform wiring in accordance with the manual A mounting base attachment hole is provided to the left and right of the M NET3 com...

Page 19: ...e side face of the EJ 210 as shown in the figure below P terminal Red wire Power supply positive P1 terminal White wire Voltage output P terminal Black wire Power supply ground FG terminal Gray wire S...

Page 20: ...iler without BL model or XJ1 model controller Figure 6 8 Connection diagram for boiler without BL model or XJ1 model controller Boiler control box CPU board RY board or I O board Cable assembly EC11 E...

Page 21: ...22 22 36 36 EQ 63SH 76 79 19 76 36 79 19 79 76 36 13 36 13 35 Y13 63HA 6 13 L R R N S S G FG FG G FG Boiler Sequence Option Low fire valve Shutoff valve High fire valve Terminal block of boiler operat...

Page 22: ...Document No E20 018 00 18 7 2 Boiler with XJ1 model Controller Mounted...

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