Viessmann EM-M1, EM-MX Installation And Service Instructions Manual

Installation and service instructions

for contractors

Mixer extension kit

ADIO electronics module

Mixer extension kit EM-M1 for one heating circuit with mixer, wall mounting
Mixer extension kit EM-MX for one heating circuit with mixer, mixer mounting
Mixer extension kit EM-MX for one heating circuit with mixer, mixer mounting,

Divicon heating circuit distributor

Mixer extension kit

VIESMANN

5838001 GB 12/2018

Please keep safe.

Safety instructions

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 environmental pollution.

Target group

These instructions are exclusively intended for quali­fied contractors.

Regulations to be observed

■

National installation regulations

■

Statutory regulations for the prevention of accidents

■

Statutory regulations for environmental protection

Note

Details identified by the word "Note" contain additional
information.

■

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 person authorised by the
installer.

■

Codes of practice of the relevant trade associations

■

Relevant country-specific safety regulations

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 safeguard it against unintentional
reopening.

■

Isolate the system from the power supply, 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 reconnection.

■

Wear suitable personal protective equipment when
carrying out any work.

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 pipework.

Please note

!

Electronic assemblies can be damaged 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
function. Installing non-authorised components
and making non-approved modifications or con­versions can compromise safety and may inva­lidate our warranty.
For replacements, use only original spare parts
supplied or approved by Viessmann.

5838001

2

Safety instructions (cont.)

Safety instructions for operating the system

Safety instructions

If you smell gas

Danger

Escaping gas can lead to explosions 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 supply 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 spreading.

What to do if water escapes from the appliance

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 combustion air.
Inform system users that subsequent modifications to
the building characteristics are not permissible (e.g.
cable/pipework routing, cladding or partitions).

Danger

Leaking or blocked flue systems, or an inade­quate supply of combustion 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 non­sealable.

Extractors

Operating appliances that exhaust air to the outside
(extractor hoods, extractors, air conditioning units, etc.)
can create negative pressure. If the boiler is operated
at the same time, this can lead to a reverse flow of flue
gas.

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.

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 suitable steps to
ensure an adequate supply of combustion air.

5838001

3

Index

Index

1. Information Disposal of packaging ............................................................................ 5

Symbols ................................................................................................. 5

System examples .................................................................................. 5

2. Installation sequence Mounting the mixer extension kit ........................................................... 6

■

Mixer mounting ................................................................................... 6

■

Wall mounting ..................................................................................... 6

Mounting the temperature sensor .......................................................... 7

■

Installing the flow temperature sensor (contact temperature sensor) . 7

■

Installing the flow temperature sensor on the Divicon heating circuit

distributor ............................................................................................ 7

Overview of electrical connections ........................................................ 8

Connecting the flow temperature sensor ............................................... 8

Connecting the temperature sensor of the low loss header (if installed) 8

Connecting the mixer motor ................................................................... 8

■

Mixer motor ......................................................................................... 9

■

Mixer motors without plug or on-site mixer motors ............................. 9

Connecting the heating circuit pump ..................................................... 10

■

Heating circuit pump 230 V~ .............................................................. 10

■

Heating circuit pump 400 V~ .............................................................. 11

■

Pumps in the underfloor heating circuit (in case of system separa-

tion) ..................................................................................................... 12

■

Temperature limiter for maximum temperature limiter (accessories) .. 12

Rotary switch S1 for subscriber number addressing ............................. 13

Connecting the PlusBus to the heat generator ...................................... 13

Power supply ......................................................................................... 14

■

Power supply at heat generator .......................................................... 14

■

Separate power supply ....................................................................... 14

Connecting several accessories ............................................................ 16

■

Power supply and PlusBus connection .............................................. 16

Commissioning ...................................................................................... 16

■

Rotational direction of the mixer motor ............................................... 17

3. Parts lists Parts list ................................................................................................. 18

■

Wall mounting ..................................................................................... 19

■

Mixer mounting ................................................................................... 21

4. Specification Specification .......................................................................................... 23

Connection and wiring diagram ............................................................. 24

5. Declaration of Conformity Declaration of conformity ....................................................................... 25

6. Keyword index ................................................................................................................ 26

5838001

4

1.

Disposal of packaging

Please dispose of packaging waste in line with statu­tory regulations.

Symbols

Information

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 environ­mental pollution

Live electrical area

Pay particular attention.

■

Component must audibly click into place.
or

■

Acoustic signal

■

Fit new component.
or

■

In conjunction with a tool: Clean the sur­face.

Dispose of component correctly.

Dispose of component at a suitable collec­tion point. Do not dispose of component in
domestic waste.

Information

System examples

For available system examples, see www.viessmann­schemes.com

5838001

5

M6

M8

M8

M6

M8

M6

3x

M8

M6

3x

3.

M6/M8

2.

1.

4.

2.

1.

Installation sequence

Mounting the mixer extension kit

Mixer mounting

Installation

Fig. 1

Wall mounting

Fig. 2

5838001

6

1.

2.

4.

3.

100

Mounting the temperature sensor

Installing the flow temperature sensor (contact temperature sensor)

Installation sequence

■

Fit the flow temperature sensor to the heating flow
pipe immediately downstream of the heating circuit
pump in the flow direction.

■

With plastic pipes, mount the sensor against an inter­mediate metal pipe section.

■

Clean the contact area on the pipe down to bare
metal.

■

Heat conducting paste is not required.

■

Do not thermally insulate the temperature sensor.

Installation

Fig. 3

Installing the flow temperature sensor on the Divicon heating circuit distributor

Installation instructions for Divicon heating cir­cuit distributor

5838001

7

L

?

N

?

N

jF jF

[{]

fÖ

M
1~

230 V~/50 Hz

M
1~

L

?

N

L

?

N

gS

sÖ

[{] [{] [{] [{{]

?

)

S1

Installation sequence

Overview of electrical connections

Installation

Fig. 4

Plug 230 V~

Heating circuit pump (on site)

sÖ

P1

Mixer motor

gS

P3

fÖ
fÖ

Power supply
Power supply for accessories

A

Please note

!

Electronic assemblies can be damaged by elec­trostatic discharge.
Prior to commencing any work, touch earthed
objects such as heating or water pipes to dis-

charge static loads.
LV connections
PWM1 No function
S1 Rotary switch for subscriber number address-

ing
Flow temperature sensor

?

TS1

Note

Apply strain relief to on-site cables.
Seal any unnecessary apertures with cable grommets
(not cut open).

TS2 No function

Temperature sensor, low loss header

)

TS3

jF

PlusBus

Connecting the flow temperature sensor

Insert plug ? at slot TS1 (see diagram 4).

Connecting the temperature sensor of the low loss header (if installed)

Insert plug ) at slot TS3 (see diagram 4).

Connecting the mixer motor

Only in conjunction with extension kit for wall mounting

8

5838001

A

2

3

1

gS

M
1~

A

gS

Connecting the mixer motor (cont.)

Mixer motor

Fig. 5

Plug on mixer motor

A

Plug on mixer extension kit

gS

| Mixer open
~ Mixer close

Installation sequence

Connect the mixer motor in accordance with the dia­gram in the wall mounting base of the extension kit.
Never interchange wires.

Installation

Mixer motors without plug or on-site mixer motors

Connect the mixer motor in accordance with the dia­gram in the wall mounting base of the extension kit.
Never interchange wires.

Fig. 6

Mixer motor

A

Plug on mixer extension kit

gS

| Mixer open
~ Mixer close

The mixer motor must meet the following criteria:

Rated voltage 230 V∼

Rated breaking capacity of the
relay output

Runtime for 90º∢ 120 s

Rotational direction Can be changed

0.1 A

5838001

9

B

A

1~

M

LN

External

ON/OFF

L

N

N PE

NL

L

D

C

A

B

Installation sequence

Connecting the heating circuit pump

Note

In underfloor heating circuits, install a temperature lim­iter on site to restrict the maximum temperature of the
underfloor heating system.

Heating circuit pump 230 V~

Installation

Fig. 7

Specification

Rated current 1 A

Recommended connecting
cable

H05VV-F3G 0.75 mm
or
H05RN-F3G 0.75 mm

2

2

Heating circuit pump

A
B

Plug sÖ on the mixer extension kit

Heating circuit pump with power consumption greater than 1 A or high efficiency circulation pumps with
high starting currents

Pumps with switching input

Fig. 8

Heating circuit pump

A
B

Plug sÖ on the mixer extension kit

Contactor

C

Separate power supply (observe manufacturer's

D

instructions)

Specification for switching the contactor:

Rated voltage 230 V∼

Rated current 1 A

Recommended connecting
cable

10

H05VV-F3G 0.75 mm
or
H05RN-F3G 0.75 mm

2

2

5838001

LN

L

N

N PE

NL

L

D

C

A

B

LN

L1 L2 L3 N PE

A

C

3~

M

B

Connecting the heating circuit pump (cont.)

Pumps without switching input

Fig. 9

Heating circuit pump

A
B

Plug sÖ on the mixer extension kit
Contactor

C

Separate power supply (observe manufacturer's

D

instructions)

Installation sequence

Specification for switching the contactor:

Rated voltage 230 V∼

Rated current 1 A

Recommended connecting
cable

H05VV-F3G 0.75 mm
or
H05RN-F3G 0.75 mm

2

2

Installation

Heating circuit pump 400 V~

Fig. 10

Heating circuit pump

A
B

Plug sÖ on the mixer extension kit
Contactor

C

Specification for switching the contactor:

Rated voltage 230 V∼

Rated current 1 A

Recommended connecting
cable

H05VV-F3G 0.75 mm
or
H05RN-F3G 0.75 mm

2

2

5838001

11

1~

M

1~

M

20

LN

A

B

C

sÖ

L N?

1~

M

L N?

C

B

A

Installation sequence

Connecting the heating circuit pump (cont.)

Pumps in the underfloor heating circuit (in case of system separation)

The common power consumption of both pumps must
not exceed 1 A.

Fig. 11

Installation

Plug on mixer extension kit

sÖ

Primary heating circuit pump

A

Temperature limiter

B

Secondary heating circuit pump

C

(for system separation)

Temperature limiter for maximum temperature limiter (accessories)

Electromechanical temperature limiter using the liquid
expansion principle

■

Switches the heating circuit pump off when the set
value has been exceeded.

■

The flow temperature is only slowly reduced in this
situation. It may take several hours before the sys­tem restarts again automatically.

■

Connection: Screw terminals for 1.5 mm

Specification

Setting range 30 to 80 °C

Switching differential

■

Immersion thermostat Max. 11 K

■

Contact thermostat Max. 14 K

2

Fig. 12

Heating circuit pump

A

Temperature limiter

B
C

Plug sÖ on the mixer extension kit

12

5838001

B

74

1 2

A

jF jF

123

4

Rotary switch S1 for subscriber number addressing

Note

The rotary switch can be found on the PCB of the elec­tronics module.

Set rotary switch S1.

System with one heating circuit with mixer:

■

Heating circuit 2 with mixer: Rotary switch on exten­sion kit to 1

■

EM-P1 extension (heating circuit 1 without mixer):
Rotary switch to 2

System with several heating circuits with mixer:

■

Heating circuit 2 with mixer: Rotary switch on exten­sion kit to 1

■

Heating circuit 3 with mixer: Rotary switch on exten­sion kit to 2

■

Heating circuit 4 with mixer: Rotary switch on exten­sion kit to 3

■

Fig. 13

EM-P1 extension (heating circuit 1 without mixer):
Rotary switch to 4

Installation sequence

Installation

Connecting the PlusBus to the heat generator

Fig. 14

Extension (electronics module)

A

PlusBus to heat generator

B

Note

If making the connection to the heat generator with an
external plug for the bus connection, disconnect plug

jF

and connect the wires directly.

Heat generator installation and service instruc­tions

5838001

13

L

?

N

L

?

N

156

LN

A

Installation sequence

Power supply

Power supply at heat generator

Installation

Fig. 15

Extension (electronics module)

A

Power supply

fÖ

Power supply for further accessories

fÖ

A

Plug for heat generator accessories power supply

aBH

Create the power supply connection.
Route the power cable to the heat generator and con­nect to plug
put, plug

aBH

. Observe MCB/fuse protection, out-

aBH

of the heat generator.
If power is supplied to a further accessory, use
plug fÖA provided

Heat generator installation and service instruc­tions

Danger

Incorrect core assignment can result in serious
injury and damage to the appliance.
Never interchange cores "L" and "N".

Separate power supply

If the power supply for the extension is not made at
the heat generator.

Danger

Incorrect electrical installations can lead to seri­ous injury from electrical current and result in
appliance damage.

Connect the power supply and implement all
safety measures (e.g. RCD circuit) in accord­ance with the following regulations:

■

IEC 60364-4-41

■

VDE regulations

■

TAR medium voltage VDE-AR-N-4110

Danger

The absence of system component earthing can
lead to serious injury from electric current if an
electrical fault occurs.
The appliance and pipework must be connected
to the equipotential bonding of the building.

Isolators for non-earthed conductors

■

The mains isolator (if installed) must simultaneously
isolate all non-earthed conductors from the mains
with a minimum contact separation of 3 mm.

■

If no mains isolator is installed, all non-earthed con­ductors must be isolated from the power supply by
the upstream circuit breaker with a minimum contact
separation of 3 mm.

14

5838001

L1

B

FE

D

D

N

C

A

40

Power supply (cont.)

Installation sequence

Connect the power supply in accordance 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. The length of the earth conductor
wire will depend on the design.

Danger

Incorrect core assignment can result in serious
injury and damage to the appliance.
Never interchange cores "L" and "N".

Please note

!

Incorrect phase sequence can cause damage to
the appliance.
Ensure phase equality with the heat generator
power supply.

Installation

Fig. 16

Power supply, extension (electronics module)

A

Power supply, heat generator

B

Power supply 1/N/PE, 230 V/50 Hz

C

Fuse (max. 16 A)

D

Mains isolator, 2-pole, on site

E

Junction box (on site)

F

Colour coding to IEC 60757
BN Brown
BU Blue
GNYE Green/yellow

5838001

15

74

74

40A

40

74

74

40A

40

B C

74

40

96/156

A

74

74

40A

40

D

E

74

74

40A

40

74

74

40A

40

B C

74

40

96/156

A

74

74

40A

40

D

E

Installation sequence

Connecting several accessories

Power supply and PlusBus connection

Power supply to all accessories via heat generator control unit

Fig. 17

Some accessories with direct power supply

Installation

Fig. 18

A
B

Heat generator control unit
Mixer extension kit for heating circuit with
mixer M2 (ADIO electronics module)

C

Mixer extension kit for heating circuit with
mixer M3 (ADIO electronics module)

D

■

Further accessories

In the following circumstances, use the output for the
accessories only to switch an on-site relay:
An actuator (e.g. circulation pump) with a higher
power demand than the fuse rating required for the
accessories is connected at the accessories output.

■

In the following circumstances, connect one or more
accessories directly to the mains supply via an
ON/OFF switch:
The max. permissible total current of the control unit
for the heat generator is exceeded.

Note

In this event, the accessories concerned cannot be
isolated with the ON/OFF switch on the control unit.

E

fÖ

(A)

jF
lH/aBH

ON/OFF switch
Power supply
PlusBus
Accessories power supply in the control unit of
the heat generator

Commissioning

Heat generator installation and service instruc­tions

16

5838001

gS

BU

|

~

Commissioning (cont.)

Rotational direction of the mixer motor

Checking the rotational direction of the mixer motor

Installation sequence

After being switched on, the appliance implements a
self-test. During this, the mixer is opened and closed
again.

Observe the rotational direction of the mixer motor dur­ing its self-test.
Then manually set the mixer to "OPEN".

Note

The flow temperature must now rise. If the temperature
drops, either the motor is turning in the wrong direction
or the mixer insert is incorrectly fitted.

Mixer installation instructions

Changing the rotational direction of the mixer motor (if required)

1. Remove the top casing cover of the mixer exten-

sion kit.

Fig. 19

2.

At plug gS, swap the cores at terminals " " and " ".

Installation

Danger

An electric shock can be life threatening.
Switch OFF the power supply before open­ing the appliance. For example, remove the
fuse or switch off a mains isolator.

3. Refit the casing cover.

5838001

17

Parts lists

Parts list

The following details are required when ordering parts:

■

Serial no. (see type plate)

■

Position number of the part

Service

18

5838001

0006

0013

0002

0004

0005

0015

0001

0014

Parts list (cont.)

Wall mounting

Parts lists

Service

Fig. 20

5838001

19

Parts lists

Parts list (cont.)

Pos. Part

0001 ADIO electronics module

0002 Flow temperature sensor NTC

0004

Connecting cable

0005 PlusBus cable

0006 Plug set

0013 Strain relief

0014 Fuse 2.0 A (slow), 250 V~ (10 pce)

0015 Installation and service instructions

fÖ

Service

20

5838001

0015

0002

0006

0013

0012

0001

0014

0009

0011

0010

0004

0005

0008

Parts list (cont.)

Mixer mounting

Parts lists

Service

Fig. 21

5838001

21

Parts lists

Parts list (cont.)

Pos. Part

0001 Extension

0002 Flow temperature sensor NTC

0004

Connecting cable

0005 PlusBus cable

0006 Plug set

0008

Mixer connecting cable

0009 Motor module

0010 Motor lever

0011 Base plate

0012 Fixing kit

0013 Strain relief

0014 Fuse 2.0 A (slow), 250 V~ (10 pce)

0015 Installation and service instructions

fÖ

gS

Service

22

5838001

10

1

10 30 50 70 90 110

Temperature in °C

0.4

0.6

0.8

2

4

6

8

20

Resistance in kΩ

Specification

Specification

Rated voltage 230 V∼

Rated frequency 50 Hz

Rated current 2 A

Power consumption – electronics

■

Wall mounting 1.5 W

■

Mixer mounting 5.5 W

Power consumption

■

Wall mounting 7 mA

■

Mixer mounting 25 mA

IP rating IP 20D to EN 60529, ensure through design/

installation

Permissible ambient temperature

■

Operation 0 to +40 °C

■

Storage and transport –20 °C to +65 °C

Rated relay output breaking capacity

■

Heating circuit pump

■

Mixer motor

gS

sÖ

1 A 230 V~

0.1 A 230 V~

Flow temperature sensor/temperature sensor for low loss header

Sensor type NTC 10 kΩ, at 25 °C

IP rating IP 53 to EN 60529; ensure through design/installation

Permissible ambient temperature

■

Operation 0 to +120 °C

■

Storage and transport −20 °C to +70 °C

Curve

Fig. 22

Appendix

5838001

23

Specification

Connection and wiring diagram

Appendix

Fig. 23

A1 Mixer extension kit PCB
A2 PCB
F1 Fuse

230 V~ plugs

Heating circuit pump (on site)

sÖ

P1

Mixer motor

gS

P3

fÖ
fÖ

Power supply 230 V/50 Hz
Power supply for accessories

A

LV plugs
PWM1 No function

Flow temperature sensor

?

TS1

S1 Rotary switch for subscriber number addressing

Mixer motor if wall mounted

A

Mixer motor if mixer mounted

B

TS2 No function

Temperature sensor, low loss header

)

TS3

jF

PlusBus connection for connecting to the heat
generator and another accessory

24

5838001

Declaration of conformity

Declaration of Conformity

We, Viessmann Werke GmbH & Co. KG, D-35107
Allendorf, declare as sole responsible body that the
named product complies with the European directives
and supplementary national requirements in terms of
its design and operational characteristics.
Conformity has been verified with the CE designation.
Using the serial number, the full Declaration of Con­formity can be found on the following website:

www.viessmann.co.uk/eu-conformity

Declaration of Conformity

Appendix

5838001

25

Keyword index

Keyword index

C

Connection and wiring diagram..................................24

E

Electrical connections.................................................. 8

Extension kit mounting................................................. 6

F

Flow temperature sensor

– Connecting................................................................ 8

– Mounting................................................................... 7

H

Heating circuit pump connection

– 230 V~.....................................................................10

– 400 V~..................................................................... 11

M

Mixer motor connection................................................8

P

Pumps

– Underfloor heating circuit........................................ 12

S

Specification...............................................................23

System examples.........................................................5

T

Temperature limiter.................................................... 12

Temperature sensor for low loss header

– Connecting................................................................ 8

U

Underfloor heating circuit........................................... 12

26

5838001

5838001

27

Viessmann Werke GmbH & Co. KG
D-35107 Allendorf
Telephone: [phone]
Fax: [phone]
www.viessmann.com

28

Viessmann Limited
Hortonwood 30, Telford
Shropshire, TF1 7YP, GB
Telephone: [phone]
Fax: [phone]
E-mail: [e-mail]

5838001 Subject to technical modifications.