Viessmann EM-S1 Istruzioni operative

Installation and service instructions

for contractors

VIESMANN

Solar EM-S1 extension

ADIO electronics module

Function extension for connecting a solar thermal system

Solar EM-S1 extension

6151118 GB 1/2020 Please keep safe.

Please follow these safety instruc-

tions 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 environmen-

tal pollution.

Note

Details identified by the word "Note"

contain additional information.

Target group

These instructions are exclusively inten-

ded for qualified contractors.

■Work on gas installations may only be

carried out by a registered gas fitter.

■Work on electrical equipment may only

be carried out by a qualified electrician.

■The system must be commissioned by

the system installer or a qualified per-

son authorised by the installer.

Regulations to be observed

■National installation regulations

■Statutory regulations for the prevention

of accidents

■Statutory regulations for environmental

protection

■Codes of practice of the relevant trade

associations

■Relevant country-specific safety regu-

lations

Safety instructions for working on the system

Working on the system

■Where gas is used as the fuel, close

the main gas shut-off valve and safe-

guard it against unintentional reopen-

ing.

■Isolate the system from the power sup-

ply, e.g. by removing the separate fuse

or by means of a mains isolator, and

check that it is no longer live.

■Safeguard the system against recon-

nection.

■Wear suitable personal protective

equipment when carrying out any work.

Safety instructions

6151118

Danger

Hot surfaces and fluids can lead to

burns or scalding.

■Before maintenance and service

work, switch OFF the appliance

and let it cool down.

■Never touch hot surfaces on the

boiler, burner, flue system or pipe-

work.

!Please note

Electronic assemblies can be dam-

aged by electrostatic discharge.

Prior to commencing work, touch

earthed objects such as heating or

water pipes to discharge static

loads.

Repair work

!Please note

Repairing components that fulfil a

safety function can compromise the

safe operation of the system.

Replace faulty components only

with genuine Viessmann spare

parts.

Auxiliary components, spare and

wearing parts

!Please note

Spare and wearing parts that have

not been tested together with the

system can compromise its func-

tion. Installing non-authorised com-

ponents and making non-approved

modifications or conversions can

compromise safety and may invalid-

ate our warranty.

For replacements, use only original

spare parts supplied or approved by

Viessmann.

Safety instructions

Safety instructions (cont.)

6151118

Safety instructions for operating the system

If you smell gas

Danger

Escaping gas can lead to explo-

sions which may result in serious

injury.

■Do not smoke. Prevent naked

flames and sparks. Never switch

lights or electrical appliances on

or off.

■Close the gas shut-off valve.

■Open windows and doors.

■Evacuate any people from the

danger zone.

■Notify your gas or electricity sup-

ply utility from outside the building.

■Have the power supply to the

building shut off from a safe place

(outside the building).

If you smell flue gas

Danger

Flue gas can lead to life threatening

poisoning.

■Shut down the heating system.

■Ventilate the installation site.

■Close doors to living spaces to

prevent flue gases from spread-

ing.

What to do if water escapes from the

appliance

Danger

If water escapes from the appliance

there is a risk of electrocution.

Switch OFF the heating system at

the external isolator (e.g. fuse box,

domestic distribution board).

Danger

If water escapes from the appliance

there is a risk of scalding.

Never touch hot heating water.

Condensate

Danger

Contact with condensate can be

harmful to health.

Never let condensate touch your

skin or eyes and do not swallow it.

Flue systems and combustion air

Ensure that flue systems are clear and

cannot be sealed, for instance due to

accumulation of condensate or other

external causes.

Ensure an adequate supply of combus-

tion air.

Inform system users that subsequent

modifications to the building characteris-

tics are not permissible (e.g. cable/pipe-

work routing, cladding or partitions).

Danger

Leaking or blocked flue systems, or

an inadequate supply of combus-

tion air can cause life threatening

poisoning from carbon monoxide in

the flue gas.

Ensure the flue system is in good

working order. Vents for supplying

combustion air must be non-seala-

ble.

Extractors

Operating appliances that exhaust air to

the outside (extractor hoods, extractors,

air conditioning units, etc.) can create

negative pressure. If the boiler is oper-

ated at the same time, this can lead to a

reverse flow of flue gas.

Safety instructions

Safety instructions (cont.)

6151118

Danger

The simultaneous operation of the

boiler and appliances that exhausts

air to the outside can result in life

threatening poisoning due to a

reverse flow of flue gas.

Fit an interlock circuit or take suita-

ble steps to ensure an adequate

supply of combustion air.

Safety instructions

Safety instructions (cont.)

6151118

1. Information Disposal of packaging ............................................................................ 7

Symbols ................................................................................................. 7

Intended use .......................................................................................... 7

System examples .................................................................................. 8

Spare parts lists ..................................................................................... 8

2. Installation sequence Wall mounting ........................................................................................ 9

Overview of electrical connections ........................................................ 9

Rotary switch S1 .................................................................................... 10

Connecting the PlusBus to the heat generator ...................................... 10

Power supply ......................................................................................... 11

■Power supply at heat generator .......................................................... 11

■Separate power supply ....................................................................... 11

Connecting several accessories ............................................................ 13

■Power supply and PlusBus connection .............................................. 13

3. Commissioning Configuring the solar EM-S1 extension ................................................. 14

4. Troubleshooting Faults displayed with a fault code .......................................................... 15

Faults displayed without a fault code ..................................................... 15

Repairs .................................................................................................. 15

■Checking the solar circuit pump at output P1 ..................................... 15

■Checking the temperature sensors ..................................................... 16

5. Function description Function description of solar DHW heating ........................................... 17

■Suppression of DHW cylinder reheating by the boiler ........................ 17

■Reduction of stagnation time .............................................................. 18

■Collector frost protection ..................................................................... 18

■Interval function solar circuit pump ..................................................... 18

■Relay kick ........................................................................................... 18

6. Specification Specification .......................................................................................... 19

Connection and wiring diagram ............................................................. 19

7. Declaration of Conformity Declaration of conformity ....................................................................... 20

8. Keyword index ................................................................................................................ 21

Index

6151118

Please dispose of packaging waste in line with statu-

tory regulations.

Symbols

Symbol Meaning

Reference to other document containing

further information

Step in a diagram:

The numbers correspond to the order in

which the steps are carried out.

Warning of material losses and environ-

mental pollution

Live electrical area

Pay particular attention.

■Component must audibly click into place.

■Acoustic signal

■Fit new component.

■In conjunction with a tool: Clean the sur-

face.

Dispose of component correctly.

Dispose of component at a suitable collec-

tion point. Do not dispose of component in

domestic waste.

Intended use

The device serves to control heating systems with

solar DHW heating.

Commercial or industrial use for a purpose other than

heating the solar circuit shall be deemed inappropriate.

Intended use presupposes that a permanent installa-

tion in conjunction with permissible components

designed for this purpose has been carried out.

All other use is deemed inappropriate. Any resulting

losses are excluded from the manufacturer's liability.

Any usage beyond this must be approved by the man-

ufacturer in each individual case.

Intended use also includes adherence to maintenance

and inspection intervals.

Information

Disposal of packaging

6151118

Information

For available system examples, see www.viessmann-

schemes.com

Spare parts lists

Information about spare parts can be found at

www.viessmann.com/etapp or in the Viessmann

spare part app.

Information

System examples

6151118

Information

Fig. 1

Overview of electrical connections

jF jF [{] [{] [{] [{] fÖ

230 V~/50 Hz

? ?

[{{]

&% ?

Fig. 2

Plug 230 V~

P1 sF Solar circuit pump

Only use a circulation pump with PWM control.

P3 fH Transfer pump

fÖ Power supply

fÖAPower supply for accessories

Extra low voltage connections

PWM1 Speed control, solar circuit pump

TS1 %Cylinder temperature sensor NTC 10 kΩ

TS2 &Collector temperature sensor NTC 20 kΩ

TS3 No function

jF PlusBus

!Please note

Electronic assemblies can be damaged by elec-

trostatic discharge.

Prior to commencing any work, touch earthed

objects such as heating or water pipes to dis-

charge static loads.

Note

Apply strain relief to on-site cables.

Secure individual wires directly to each plug using

cable ties.

Seal any unnecessary apertures with cable grommets

(not cut open).

Installation sequence

Wall mounting

6151118

Installation

Fig. 3

Set rotary switch S1 to 0 (factory setting is 1).

Note

The rotary switch can be found on the PCB of the elec-

tronics module.

Connecting the PlusBus to the heat generator

1 2

jF jF

1234

Fig. 4

AExtension (electronics module)

BPlusBus to heat generator

Note

For connection to heat generators with external plug,

luster terminals or spring-loaded terminals for bus con-

nection, disconnect plug jF. Connect the wires

directly.

Heat generator installation and service instruc-

tions

Installation sequence

Rotary switch S1

6151118

Installation

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