Viessmann EM-EA1 Extension Installation And Service Instructions Manual
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Installation and
Service Instructions
for use by heating contractor
EM-EA1 extension
DIO electronics module
Function extension
EM -EA1 Ex t e nsion
Certified as a component
part for Viessmann boilers
5472 514 - 02
03/2022
Product may not be exactly as shown
IMPORTANT
Read and save these instructions
for future reference
.
Please file in Service Binder
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Table of Contents
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Summary of Contents for Viessmann EM-EA1 Extension
- Page 1 EM -EA1 Ex t e nsion Product may not be exactly as shown IMPORTANT Read and save these instructions Certified as a component for future reference part for Viessmann boilers 5472 514 - 02 03/2022 Please file in Service Binder...
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Page 2: Safety, Installation And Warranty Requirements
Safety EM-EA1 Extension Installation / Service Safety, Installation and Warranty Requirements Safety, Installation and Warranty Requirements Please ensure that these instructions are read and understood before commencing installation. Failure to comply with the instructions listed below and details printed in this manual can cause product/property damage, severe personal injury, and/or loss of life. -
Page 3: Table Of Contents
Table of Contents EM-EA1 Extension Installation / Service Page Page Safety Safety, Installation and Warranty Requirements ....2 Important Precautions Important Regulatory and Installation Requirements ..4 General Information About these Installation Instructions ......5 Intended Use .............5 Product Information ............ 5 Installation Mounting the Extension ..........6... -
Page 4: Important Regulatory And Installation Requirements
Please carefully read this manual prior to attempting Approvals installation. Any warranty is null and void if these Viessmann boilers, burners and controls are approved for instructions are not followed. sale in North America by CSA International. For information regarding other Viessmann System... -
Page 5: About These Installation Instructions
General Information EM-EA1 Extension Installation / Service About these Installation Instructions Take note of all symbols and notations intended to draw attention to potential hazards or important product information. Indicates an imminently hazardous situation which, WARNING if not avoided, could result in death, serious injury or substantial product/property damage. -
Page 6: Mounting The Extension
Installation/ Connections EM-EA1 Extension Installation / Service Mounting the Extension 1. Loosen the retaining screws from the extension kit enclosure (do not remove). 2. Remove cover and set aside. 3. Mount the extension module enclosure to the wall using the supplied hardware. -
Page 7: Overview Of Electrical Connections
Connections EM-EA1 Extension Installation / Service Overview of Electrical Connections Legend Digital input 1 Z1 fD 120V relay output, 120V input Digital input 2 fÖ Power supply Digital input 3 fÖ A Power supply for additional accessories 0 - 10V IN... -
Page 8: Electrical Connections
Connections EM-EA1 Extension Installation / Service Overview of Electrical Connections (continued) Function Page Connections: PWM1 0-10V 43-1 43-L External functions External default set supply temperature External default output Operating mode changeover External demand External blocking Fault message input and fault message output... -
Page 9: Connecting External Functions
Connections EM-EA1 Extension Installation / Service Connecting External Functions Connecting external default set supply temperature: 0 - 10V IN Analog input for connecting the external default set supply temperature or the external default output When making the connection, ensure correct polarity of the DC control voltage 0 - 10V. - Page 10 Connections EM-EA1 Extension Installation / Service Connecting External Functions (continued) Connecting the operating mode changeover: DI1 to DI3 Continuous operation or room temperature dependent operation As soon as the contact closes, the following demands become active: Set supply temperature demand for the system...
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Page 11: Connecting The Fault Message Input And Fault Message Output
Connections EM-EA1 Extension Installation / Service Connecting the Fault Message Input and Fault Message Output Connecting the fault message input and fault message output Connection without system blocking via 120V fault message input: fD Fault message input 43-1 and conductor L of the power supply at plug fÖ... - Page 12 Connections EM-EA1 Extension Installation / Service Connecting the Fault Message Input and Fault Message Output (continued) Connecting the fault message input and fault message output (continued) Connection without system blocking via 120V fault message input: fD Fault message input 43-1 and conductor L of the power supply at plug fÖ...
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Page 13: Connecting The External Lpg Valve
Connections EM-EA1 Extension Installation / Service Connecting the External LPG Valve: Output 43-L is active as soon as the burner control unit starts the burner. The external LPG valve opens. Connecting the External Extractor Interlock: Example: Extractor hood The floating contact switches from “Ö” to “S” as soon as the burner control unit starts the burner. -
Page 14: Power Supply
Connections EM-EA1 Extension Installation / Service Power Supply Direct power supply WARNING Incorrectly executed electrical installations can result in injuries from electrical current and in equipment damage. Connect the power supply (see page 4) and implement all grounding measures (e.g. RCD circuit) in accordance... -
Page 15: Rotary Switch S1 For Subscriber Number Addressing
Rotary Switch S1 for Subscriber Number Addressing Set rotary switch S1 to a consecutive numbers as shown in the example below: 1st EM-EA1 extension: Rotary switch to 1 2nd EM-EA1 extension: Rotary switch to 2 3rd EM-EA1 extension: Rotary switch to 3... -
Page 16: Wiring Diagram
Wiring /Specification EM-EA1 Extension Installation / Service Wiring Diagram Legend Digital input 1 Z1 fD 120V relay output, 120V input Digital input 2 fÖ Power supply Digital input 3 fÖ A Power supply for additional accessories 0 - 10V IN...