Viessmann Vitotron 100 Series Manuale utente

Vitotron 100

Type VMN3, VLN3

Electric instantaneous water boiler for central heating

6155049 GB 6/2020

Installation and

operating instructions

VITOTRON100

6155049

Please follow these safety

instructions closely to prevent

hazards, injury and material losses.

Danger

This symbol warns against the risk

of injury.

These instructions are exclusively

intended for qualied contractors.

■National installation regulations

■Statutory regulations for the prevention

of accidents

■Statutory regulations for environmental

protection

■Work on electrical equipment must only

be carried out by a qualied electrician.

■The system must be commissioned by

the system installer or a qualied

person authorised by the installer.

Caution

This symbol warns against the risk

of material losses and environmental

pollution.

Note

Details identied by the word "Note"

contain additional information.

Safety instructions explained

Target group

Regulations to be observed

Safety instructions

■Codes of practice of the relevant trade

associations

■Relevant safety regulations in each

country

6155049

Safety instructions (cont.)

Safety instructions for working on the system

■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.

Note

In addition to the control circuit, there

may be several power circuits.

Danger

Contact with live components can

result in severe injuries. Some

components on PCBs remain live

even after the power supply has

been switched off. Wait at least

4 minutes until the voltage has

completely dropped out before

removing the covers from the

appliances.

■

Safeguard the system against

reconnection.

■Wear suitable personal protective

equipment when working on the

system.

Working on the system

Safety instructions

Caution

Electronic assemblies can be

damaged by electrostatic discharge.

Prior to commencing any work,

touch earthed objects such as

heating or water pipes to discharge

static loads.

Danger

Hot surfaces and uids can cause

burns or scalding.

■Before maintenance and service

work, switch OFF the appliance

and let it cool down.

■Never touch hot surfaces on the

appliance, ttings or pipework.

Caution

Repairing components that full

a safety function can compromise

the safe operation of the system.

Replace faulty components only

with genuine Viessmann spare

parts.

Caution

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 modications

or conversions can compromise

safety and may invalidate our

warranty. For replacements, use

only original spare parts supplied

or approved by Viessmann.

Maintenance

Auxiliary components, spare and

wearing parts

Danger

If water escapes from the appliance

there is a risk of electric shock. 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.

Safety instructions for operating the system

What to do if water escapes from the

appliance

6155049

Keyword index

Information

Preparing for installation

Installation sequence

Specication

Disposal of packaging ............................................................................. 5

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

Intended use ............................................................................................ 5

Product information ................................................................................. 5

Product description .................................................................................. 6

Installation information ............................................................................. 6

Connecting the boiler to the central heating system ................................ 7

Assembly and installation ........................................................................ 8

Selecting the power supply type ............................................................ 12

Connecting external sensors and control devices ................................. 13

Extending the system with additional heating circuits ........................... 15

Description ............................................................................................. 16

Connection ............................................................................................ 17

Using the control panel .......................................................................... 18

Removing the side cover ....................................................................... 26

Internal view VMN3 ............................................................................... 27

Internal view VLN3 ................................................................................ 28

Structure of the boiler – water section ................................................... 29

Heater .................................................................................................... 30

Removing the heater ............................................................................. 31

Description of PCB MSK.80/04 VMN3 .................................................. 32

Description of PCB MSK.80/05 VLN3 ................................................... 33

Schematic diagram MSK.80/04 VMN3 .................................................. 34

Schematic diagram MSK.80/05 VLN3 ................................................... 35

Connecting optional appliances ............................................................. 36

Wiring diagram 4–8 kW ......................................................................... 37

Wiring diagram 12–24 kW ..................................................................... 38

Connecting the PCB 4–8 kW (VLN3, VMN3) ........................................ 39

Connecting the PCB 12–24 kW (VLN3, VMN3) .................................... 40

Fault messages ..................................................................................... 41

"Service" test mode ............................................................................... 42

Spare parts list ....................................................................................... 44

Specication .......................................................................................... 45

Keyword index

6155049

Disposal of packaging

Symbols

Please dispose of packaging waste in line with

statutory regulations.

Information

Symbol Meaning

See other documents for more

information

Warning of material losses and

environmental pollution

Intended use

Product information

The appliance is intended solely for installation and

operation in sealed unvented heating systems that

comply with EN 12828, with due attention paid to the

associated installation, service and operating

instructions.

Depending on the version, the appliance can only be

used for the following purposes:

■

Central heating

■

DHW heating

The range of functions can be extended with additional

components and accessories.

Intended use presupposes that a xed installation in

conjunction with permissible, system-specic

components has been carried out.

Vitotron 100, type VLN3, VMN3

The Vitotron 100 may only be delivered to the

countries specied on the type plate. For deliveries

to other countries, approved contractors must arrange

individual approval on their own initiative and in

accordance with the law of the country in question.

The type plate is located at the top of the boiler.

Commercial or industrial usage for a purpose other

than central heating or DHW heating shall be deemed

inappropriate.

Incorrect usage or operation of the appliance

(e.g. the appliance being opened by the system user)

is prohibited and will result in an exclusion of liability.

Incorrect usage also occurs if the components in the

heating system are modied from their intended

function.

Note

The appliance is intended exclusively for domestic or

semi-domestic use, i.e. even users who have not had

any instruction are able to operate the appliance

safely.

6155049

Product description

The Vitotron 100 is a system boiler with an optional

connection to a DHW cylinder.

In the delivered condition, the Vitotron type VLN3 is

set up for operation with a constant boiler water

temperature.

In the delivered condition, the Vitotron 100 type VMN3

is set up for weather-compensated operation. An

outside temperature sensor and a room temperature

sensor are included in the standard delivery.

The appliance is equipped with a sealed unvented

hydraulic system with 2 connections for the heating

ow and return.

These boilers are only intended for installation in

sealed unvented heating systems. Boilers for open

vented heating systems are also available.

The following components are integrated into the

hydraulic system:

■

Circulation pump

■

Safety valve

■

Diaphragm expansion vessel (5 litres)

Information

Installation information

The VMN3 boiler is equipped with an expansion vessel

(content: 5 l, pressure: 1.5 bar). The expansion vessel

is sufcient for the following heating system capacities

at the specied heating medium temperatures and the

specied central heating system pressure.

If a higher capacity is required for the moist central

heating system, an additional expansion vessel must

be installed.

Heating medium

temperature

(ow and return)

Capacity of

central heating

system

Pressure in

central heating

system

[°C] [l] [bar]

85/70 56

1.5

70/55 80

55/45 127

50/40 153

45/35 188

■

A moist central heating system must be ushed

before the boiler is installed.

■ Do not install any shut-off ttings (e.g. valves) at the

safety valve diffuser.

■ The boiler must be installed on a at wall surface.

■The boiler must not be installed in a humid

environment, in a place where there is a risk

of explosion, or in a place where the ambient

temperature may fall below 0 °C.

■All installation work must be carried out with the

power and water supply switched off.

■The boiler is set at the factory for use with a central

heating system. To operate the boiler in conjunction

with a DHW cylinder, the standard setting must be

changed in the extended settings.

■The electrical installation must include surge

protection to protect the sensitive, electronically

controlled heating system from voltage peaks.

■Do not drain the water from the central heating

system after the heating period.

■Leave the controller in standby mode between

heating periods and do not interrupt the power

supply.

DHW heating with a DHW cylinder

A 3-way valve is available for connecting the DHW

cylinder, which must be installed on the outside of the

boiler. The cylinder temperature sensor (accessories)

can be connected to the boiler control unit and

demands heating energy.

6155049

Connecting the boiler to the central heating system

Preparing for installation

Tos PI – Pressure gauge

ZK – Shut-off valve

RW – Expansion line

NW – Integral expansion vessel

NW1 – Expansion vessel

ZT – Thermostatic valve

ZP – Instantaneous water heater valve

F – Filter

G – Radiator

ZS – Drain valve

TWV – Three-way valve

ZAS – DHW cylinder

Tr – Room temperature sensor

Tcyl – Temperature sensor for DHW cylinder

(WE-019/01)

Tos – Outside temperature sensor (WE-027)

Tcyl

Tos

TWV

The lter must be installed so that the ow direction of the

heating medium matches the arrow on the casing and

the cover is on the bottom of the lter. Filters can be

installed on horizontal and vertical lines. We recommend

installing shut-off valves immediately before and after the

lter to facilitate cleaning or replacement of the lter

element.

6155049

Assembly and installation

Installation sequence

1. Secure the boiler vertically with xings and ow

and return lines pointing downwards. Maintain

clearances to the wall and ceiling.

2. Connect the boiler to the central heating system

with shut-off valves.

3. Fill the central heating system with treated water

or frost-proof uid.

4. Vent the central heating system.

5. Connect the boiler to the electrical connection.

6. Install and connect the Tr and Tos sensors and

other appliances to the connection points for

external sensors and appliances.

7. After completing the above steps, start the boiler,

select the language on the boiler, run the boiler at

maximum output for 60 minutes, then vent the pump

[Conguration > Pump > Vent].

8. Set the maximum temperature factor in the

installation [Conguration > Central heating circuit >

MAX. power supply temp.].

A Heating return (to boiler) G ¾"

B Heating ow G ¾"

235

A B

min. 150

716

min. 150 min. 60

159

316

215

126

117

Caution

An incorrect electrical connection will result in

damage.

Do not connect the FN, MA, RT, Tcyl, Tos, Tr

inputs when they are supplied with power!

VxN3

400 V

VxN3

230 V

6155049

Note

A room temperature sensor and an outside

temperature sensor are included in the standard

delivery of model VMN3.

Assembly and installation (cont.)

Installation sequence

Room temperature sensor

Outside temperature sensor

6155049

Assembly and installation (cont.)

Installation sequence

Removing the side cover

PZ2

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