Viessmann EA1 Installation Instructions And Operators Manual
Installation Instructions
for use by heating contractor
EA1 Extension Module
for programmable inputs and outputs
EA1
Extension Module
Certified as a component
part for Viessmann boilers
5774 470 - 02 03/2015
Product may not be exactly as shown
IMPORTANT
Read and save these instructions
for future reference.
Please file in Service Binder
Safety
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. Ensure all requirements below are understood and fulfilled (including detailed information
found in manual subsections).
EA1 Extension Module Installation
Product documentation
Read all applicable documentation before commencing
installation. Store documentation near boiler in a
readily accessible location for reference in the future
by service personnel.
For a listing of applicable literature,
please see section entitled “Important
Regulatory and Safety Requirements”.
Licensed professional heating contractor
The installation, adjustment, service and maintenance
of this equipment must be performed by a licensed
professional heating contractor.
Please see section entitled Safety and
“Important Regulatory and Installation
Requirements”.
Advice to owner
Once the installation work is complete, the heating
contractor must familiarize the system operator/
ultimate owner with all equipment, as well as safety
precautions/requirements, shutdown procedure, and
the need for professional service annually before the
heating season begins.
Warranty
Information contained in this and
related product documentation must
be read and followed. Failure to do
so renders the warranty null and void.
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EA1 Extension Module Installation
Table of Contents
Page
Page
Safety
Important Precautions
General Information
Installation
Connections
Additional Information
Safety, Installation and Warranty Requirements..............2
Product documentation...........................................2
Licensed professional heating contractor...................2
Advice to owner....................................................2
Warranty...............................................................2
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...............................................11
Power Supply..........................................................12
Connection and Wiring Diagram.................................14
Specifications..........................................................15
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Important Precautions
Important Regulatory and Installation Requirements
EA1 Extension Module Installation
Approvals
Viessmann boilers, burners and controls are approved for
sale in North America by CSA International.
Codes
The installation of this unit shall be in accordance with
local codes. In the absence of local codes, use:
- CSA C22.1 Part 1 and/or local codes in Canada
- National Electrical Code ANSI/NFPA 70 in the U.S.
Always use latest editions of codes.
The heating contractor must comply with the Standard
for Controls and Safety Devices for Automatically Fired
Boilers, ANSI/ASME CSD-1 where required by the
authority having jurisdiction.
Working on the equipment
The installation, adjustment, service, and maintenance
of this product must be done by a licensed professional
heating contractor who is qualified and experienced in the
installation, service, and maintenance of hot water boilers.
There are no user serviceable parts on the boiler, burner,
or control.
Power supply
Install power supply in accordance with the regulations
of the authorities having jurisdiction or, in absence of
such requirements, in accordance with National Codes.
Viessmann recommends the installation of a disconnect
switch to the 120V power supply outside of the boiler
room.
Ensure main power supply to equipment, the heating
system, and all external controls have been deactivated.
Close main oil or gas supply valve. Take precautions in
both instances to avoid accidental activation of power
during service work.
Please carefully read this manual prior to attempting
installation. Any warranty is null and void if these
instructions are not followed.
For information regarding other Viessmann System
Technology componentry, please reference
documentation of the respective product.
We offer frequent installation and service seminars
to familiarize our partners with our products. Please
inquire.
The completeness and functionality of field supplied
electrical controls and components must be verified
by the heating contractor. These include low water
cut-offs, flow switches (if used), staging controls,
pumps, motorized valves, air vents, thermostats, etc.
WARNING
Turn off electric power supply before
servicing. Contact with live electric
components can cause shock or loss
of life.
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EA1 Extension Module Installation
About these Installation Instructions
Take note of all symbols and notations intended to draw attention to potential hazards or important
product information.
General Information
WARNING
Warnings draw your attention to the presence of potential
hazards or important product information.
CAUTION
Cautions draw your attention to the presence of potential
hazards or important product information.
IMPORTANT
Indicates an imminently hazardous situation which,
if not avoided, could result in death, serious injury or
substantial product/property damage.
Indicates an imminently hazardous situation which,
if not avoided, may result in minor injury or product /
property damage.
Helpful hints for installation, operation or maintenance
which pertain to the product.
This symbol indicates to note additional information
This symbol indicates that other instructions must be
referenced.
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