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Viessmann EA1 User Manual
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5774 470 - 02 03/2015
EA1
Extension Module
Installation Instructions
for use by heating contractor
EA1 Extension Module
for programmable inputs and outputs
Product may not be exactly as shown
Read and save these instructions
for future reference
.
IMPORTANT
Certified as a component
part for Viessmann boilers
2
Table of Contents
Safety, Installation and Warranty Requirements
2
Product Documentation
2
Licensed Professional Heating Contractor
2
Advice to Owner
2
Warranty
2
Table of Contents
3
Important Regulatory and Installation Requirements
4
Approvals
4
Codes
4
Working on the Equipment
4
Power Supply
4
About These Installation Instructions
5
Mounting the Extension Kit
6
Extension Kit for Installation on a Wall
6
Overview of Electrical Connections
7
Connecting Digital Inputs
8
Connecting the Analog Input 0-10V
10
Connecting the KM Bus to the Boiler Control Unit
10
Connecting the Circulation Pump or a Fault Message Facility
12
Power Supply
13
Connection and Wiring Diagram
14
Specifications
15
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Viessmann EA1 Specifications
General
Brand
Viessmann
Model
EA1
Category
Control Unit
Language
English
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