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Installation and service
instructions
for contractors
EM-EA1 extension
Function extension for forwarding fault messages
Safety instructions
Please follow these safety instructions closely to prevent accidents
and material losses.
Safety instructions explained
Danger
This symbol warns against the
risk of injury.
!
Please note
This symbol warns against the
risk of material losses and envi-
ronmental pollution.
Note
Details identified by the word "Note"
contain additional information.
Installation, initial start-up, inspection,
maintenance and repairs must only be
carried out by a competent person
(heating engineer/installation contrac-
tor).
5831392 GB
6/2018
VIESMANN
Before working on the equipment/heat-
ing system, isolate the power supply
(e.g. by removing a separate mains
fuse or by means of a mains isolator)
and safeguard against unauthorised
reconnection.
When using gas as fuel, also close the
main gas shut-off valve and safeguard
against unauthorised reopening.
Repairing components which fulfil a
safety function can compromise the
safe operation of your heating system.
For replacements, use only original
spare parts supplied or approved by
Viessmann.
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Table of Contents
Related Manuals for Viessmann EM-EA1
Summary of Contents for Viessmann EM-EA1
- Page 1 VIESMANN Installation and service instructions for contractors EM-EA1 extension Function extension for forwarding fault messages Safety instructions Please follow these safety instructions closely to prevent accidents and material losses. Safety instructions explained Danger This symbol warns against the Before working on the equipment/heat- risk of injury.
- Page 2 Mounting on the wall Overview of electrical connections fÖ 3 4 5 6 Digital input 1...
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Page 3: Overview Of Electrical Connections
Overview of electrical connections (cont.) Digital input 2 230 V relay output with Z1 fD (no function) 230 V input Digital input 3 (no func- Power supply fÖ tion) Power supply for addi- fÖ A 0 - 10 V IN 0 - 10 V input (no func- tional accessories tion) - Page 4 Connecting the "external blocking" signal to digital input DI1 Function: Floating switching contact, e.g. at condensate pump. When the contact is closed, the gas condensing DI1 DI2 DI3 module and fuel cell module are 1 2 3 4 5 6 blocked.
- Page 5 Rotary switch S1 Rotary switch S1 must be set to 1 (fac- tory setting). Connecting the PlusBus to the heat generator control unit Note If making the connection to the heat generator with an external plug for the DI1 DI2 DI3 bus connection, disconnect plug jF 1 2 3 4 5 6 and connect the wires directly.
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Page 6: Separate Power Supply
Power supply Power supply at the heat generator control unit Create the power supply connection. Route the power cable to the heat gen- erator control unit and connect to plug aBH. If power is supplied to a further acces- sory, use plug fÖA provided Heat generator installation and service instructions Danger... - Page 7 Power supply (cont.) Connect the power supply and Isolators for non-earthed conductors implement all safety measures ■ The mains isolator (if installed) must (e.g. RCD circuit) in accordance simultaneously isolate all non- with the following regulations: earthed conductors from the mains ■...
- Page 8 Power supply (cont.) Connect the power supply in accord- ance with the diagram. If the power supply to the appliance is connected with a flexible cable, ensure that the live conductors are pulled taut before the earth conductor in the event of strain relief failure.
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Page 9: Connection And Wiring Diagram
Connection and wiring diagram Digital input 1 Rotary switch Digital input 2 230 V relay output with (no function) 230 V input Digital input 3 (no func- Power supply fÖ tion) Power supply for addi- fÖ A 0 - 10 V IN 0 - 10 V input (no func- tional accessories tion) -
Page 10: Parts List
Parts list The following details are required when ordering parts: ■ Serial no. (see type plate) ■ Position number of the part... - Page 11 Parts list (cont.) 0015 0002 0014 0013 0006 0004 0005 A Type plate...
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Page 12: Specification
1 A 230 V~ Output for rated breaking capacity hH (float- ing) Declaration of Conformity We, Viessmann Werke Conformity has been verified with the GmbH & Co. KG, D-35107 Allendorf, CE designation. Using the serial num- declare as sole responsible body that... - Page 16 Viessmann Werke GmbH & Co. KG Viessmann Limited D-35107 Allendorf Hortonwood 30, Telford Telephone: +49 6452 70-0 Shropshire, TF1 7YP, GB Fax: +49 6452 70-2780 Telephone: +44 1952 675000 www.viessmann.com Fax: +44 1952 675040 E-mail: info-uk@viessmann.com...