Vaillant EcoTEC exclusive 627 Manuel utilisateur

Operating instructions

ecoTEC exclusive

627 (VU 256/5‑7 (H-GB))

835 (VUW 356/5‑7 (H-GB))

843 (VUW 436/5‑7 (H-GB))

GB, IE

Publisher/manufacturer

Vaillant GmbH

Berghauser Str. 40 D-42859 Remscheid

Tel. +49 21 91 18‑0 Fax +49 21 91 18‑2810

[email protected] www.vaillant.de

Contents

2Operating instructions ecoTEC exclusive 0020193967_01

Contents

1 Safety .................................................................... 3

1.1 Action-related warnings ......................................... 3

1.2 Intended use .......................................................... 3

1.3 General safety information .................................... 3

2 Notes on the documentation .............................. 5

2.1 Observing other applicable documents ................. 5

2.2 Storing documents................................................. 5

2.3 Validity of the instructions...................................... 5

3 Product description............................................. 5

3.1 Product design....................................................... 5

3.2 Control elements.................................................... 5

3.3 Operator control panel........................................... 5

3.4 Displayed symbols................................................. 6

3.5 Information on the identification plate.................... 6

3.6 Serial number ........................................................ 6

3.7 CE label ................................................................. 6

3.8 Energy Saving Trust Endorsed Products .............. 6

4 Operation.............................................................. 7

4.1 Operating concept ................................................. 7

4.2 Basic display.......................................................... 7

4.3 Menu display.......................................................... 7

4.4 Operating levels..................................................... 7

4.5 Cabinet-type casing............................................... 7

4.6 Opening the isolator devices ................................. 7

4.7 Starting up the product .......................................... 7

4.8 Switching on the product ....................................... 8

4.9 Setting the language.............................................. 8

4.10 Setting the domestic hot water temperature.......... 8

4.11 Switching Comfort mode on and off ...................... 8

4.12 Setting the heating flow temperature..................... 8

4.13 Switching Green iQ mode on and off .................... 8

4.14 Guaranteeing the correct filling pressure of the

heating installation................................................. 9

4.15 Switching off the product's functions ................... 10

4.16 Protecting the heating installation against

frost...................................................................... 10

5 Detecting and rectifying faults ......................... 10

6 Calling up (Live monitor) status codes ........... 10

7 Care and maintenance ...................................... 10

7.1 Maintenance ........................................................ 10

7.2 Caring for the product.......................................... 10

7.3 Reading maintenance messages ........................ 11

7.4 Checking the condensate drain pipework and

tundish ................................................................. 11

8 Decommissioning.............................................. 11

8.1 Temporarily decommissioning the product.......... 11

8.2 Permanently decommissioning the product......... 11

9 Recycling and disposal..................................... 11

10 Guarantee and customer service..................... 11

10.1 Guarantee............................................................ 11

10.2 Customer service................................................. 11

Appendix ............................................................................ 12

A Operator level –overview ................................. 12

B Troubleshooting ................................................ 12

C Status codes –Overview .................................. 13

Safety 1

0020193967_01 ecoTEC exclusive Operating instructions 3

1 Safety

1.1 Action-related warnings

Classification of action-related warnings

The action-related warnings are classified in

accordance with the severity of the possible

danger using the following warning signs and

signal words:

Warning symbols and signal words

Danger!

Imminent danger to life or risk of

severe personal injury

Danger!

Risk of death from electric shock

Warning.

Risk of minor personal injury

Caution.

Risk of material or environmental

damage

1.2 Intended use

There is a risk of injury or death to the user or

others, or of damage to the product and other

property in the event of improper use or use

for which it is not intended.

The product is intended as a heat generator

for closed heating installations and for hot

water generation.

Intended use includes the following:

–observance of the operating instructions

included for the product and any other

system components

–compliance with all inspection and main-

tenance conditions listed in the instruc-

tions.

This product can be used by children aged

from 8 years and above and persons with

reduced physical, sensory or mental capabil-

ities or lack of experience and knowledge if

they have been given supervision or instruc-

tion concerning use of the product in a safe

way and understand the hazards involved.

Children must not play with the product.

Cleaning and user maintenance work must

not be carried out by children unless they are

supervised.

Any other use that is not specified in these

instructions, or use beyond that specified in

this document shall be considered improper

use. Any direct commercial or industrial use

is also deemed to be improper.

Caution.

Improper use of any kind is prohibited.

1.3 General safety information

1.3.1 Installation by competent persons

only

The installation, inspection, maintenance

and repair of the product, as well as the gas

ratio settings, must only be carried out by a

competent person.

1.3.2 Danger caused by improper

operation

Improper operation may present a danger to

you and others, and cause material damage.

▶Carefully read the enclosed instructions

and all other applicable documents, par-

ticularly the "Safety" section and the warn-

ings.

▶Only carry out the activities for which in-

structions are provided in these operating

instructions.

1.3.3 Risk of death from escaping gas

What to do if you smell gas in the building:

▶Avoid rooms that smell of gas.

▶If possible, open doors and windows fully

and ensure adequate ventilation.

▶Do not use naked flames (e.g. lighters,

matches).

▶Do not smoke.

▶Do not use any electrical switches, mains

plugs, doorbells, telephones or other com-

munication systems in the building.

▶If it is safe to do so, close the emergency

control valve or the main isolator.

▶If possible, close the gas isolator cock on

the product.

▶Warn other occupants in the building by

yelling or banging on doors or walls.

▶Leave the building immediately and ensure

that others do not enter the building.

▶Notify the gas supply company or the Na-

tional Grid +44 (0) 800 111999 by tele-

phone once you are outside of the build-

ing.

1 Safety

4Operating instructions ecoTEC exclusive 0020193967_01

1.3.4 Risk of death due to blocked or

leaking flue pipework

What to do if you smell flue gas in the prop-

erty:

▶Open all accessible doors and windows

fully to provide ventilation.

▶Switch off the product.

▶Inform a competent person.

1.3.5 Risk of death due to explosive and

flammable materials

▶Do not use the product in storage rooms

that contain explosive or flammable sub-

stances (such as petrol, paper or paint).

1.3.6 Risk of death due to changes to the

product or the product environment

▶Never remove, bridge or block the safety

devices.

▶Do not tamper with any of the safety

devices.

▶Do not damage or remove any seals on

components.

▶Do not make any changes:

–The product itself

–to the gas, air, water and electricity sup-

plies

–to the entire flue gas installation

–to the entire condensate drain system

–to the expansion relief valve

–to the drain pipework

–to constructional conditions that may

affect the operational reliability of the

product

1.3.7 Risk of poisoning caused by

insufficient combustion air supply

Conditions: Open-flued operation

▶Ensure that there is a sufficient combus-

tion air supply.

1.3.8 Risk of corrosion damage due to

unsuitable combustion and room air

Sprays, solvents, chlorinated cleaning

agents, paint, adhesives, ammonia com-

pounds, dust or similar substances may lead

to corrosion on the product and in the air/flue

pipe.

▶Ensure that the supply of combustion air is

always free of fluorine, chlorine, sulphur,

dust, etc.

▶Ensure that no chemical substances are

stored at the installation site.

1.3.9 Risk of material damage caused by

frost

▶Ensure that the heating installation always

remains in operation during freezing con-

ditions and that all rooms are sufficiently

heated.

▶If you cannot ensure the operation, have a

competent person drain the heating install-

ation.

1.3.10 Risk of injury and material damage

due to maintenance and repairs

carried out incorrectly or not

carried out at all

▶Never attempt to carry out maintenance

work or repairs on your product yourself.

▶Faults and damage should be immediately

rectified by a competent person.

▶Adhere to the maintenance intervals spe-

cified.

Notes on the documentation 2

0020193967_01 ecoTEC exclusive Operating instructions 5

2 Notes on the documentation

2.1 Observing other applicable documents

▶You must observe all operating instructions enclosed with

the system components.

2.2 Storing documents

▶Keep this manual and all other applicable documents

safe for future use.

2.3 Validity of the instructions

These instructions apply only to:

Product article number

Article num-

ber

Gas Council

Number

627 (VU 256/5‑7 (H-GB))

ecoTEC exclusive

0010017063 41-694-02

835 (VUW 356/5‑7 (H-

GB)) ecoTEC exclusive

0010017064 47-044-66

843 (VUW 436/5‑7 (H-

GB)) ecoTEC exclusive

0010017065 47-044-67

3 Product description

3.1 Product design

1 Control elements

2 Plate with serial number

on the rear

3 Front flap

3.2 Control elements

4 3 2 1

1 On/off button

2 Built-in controller (ac-

cessory)

3Reset button

4 Operating buttons

5 Display

3.3 Operator control panel

1 Current heating flow

temperature, filling

pressure of the heating

installation, operating

mode, fault code or

additional information

2 Current assignment of

the right-hand selection

button

3 Left- and right-hand

selection buttons

4and button

5 Maximum output op-

eration (for chimney

sweeps only)

6 Access to the menu for

additional information

7 Current assignment of

the left-hand selection

button

8 Active operating status

The display lights up

–if you switch on the product or

3 Product description

6Operating instructions ecoTEC exclusive 0020193967_01

–if you press a button while the product is switched on.

At first, pressing this button does not trigger any other

function.

The light goes out after one minute if you do not press any

button.

3.4 Displayed symbols

Symbol Meaning Explanation

Burner operating cor-

rectly

Burner on

Current burner modula-

tion rate

bar

Current filling pressure of

the heating system

The dashed lines show

the permitted range.

–Permanently on:

Filling pressure in

the permitted range.

–Flashing: Filling

pressure outside

the permitted range.

Hot water generation

active

–Permanently on:

Draw-off mode be-

fore burner is on

–Flashing: Burner on

in draw-off mode

Heating mode active –Permanently on:

Heating mode heat

requirement

–Flashing: Burner on

in heating mode

Green iQ mode active –Permanently on:

Energy-saving mode

active

Maintenance required Information on mainten-

ance message in the

"Live Monitor".

Summer mode active

Heating mode is

switched off

Burner anti-cycling time

is active

To avoid the need for

frequent switching on

and off (increases the

product's working life).

F. X X

Fault in the product Appears instead of the

basic display, may be

an explanatory plain text

display.

3.5 Information on the identification plate

The identification plate is mounted on the underside of the

product in the factory.

Applicability: Product with integrated hot water generation

OR Product with integrated hot water generation

Information on the

identification plate

Meaning

Read the instructions.

VU(W) ... Type designation

..6/5-7 Calorific value power/product generation

equipment

ecoTEC exclusive Product description

Information on the

identification plate

Meaning

2H, G20 –20 mbar

(2.0 kPa)

Gas group and gas connection pressure

as set at the factory

ww/yyyy Date of manufacture: Week/year

Cat. Approved unit categories

Types Approved gas-fired units

PMS Permissible total overpressure in heating

mode

PMW Permissible total overpressure during hot

water generation

Tmax. Max. flow temperature

ED 92/42 Current efficiency directive fulfilled with

4* rating

V Hz Mains voltage and mains frequency

W Max. electrical power consumption

IP Level of protection

Heating mode

Hot water generation

P Nominal heat output range

Q Heat input range

D Nominal hot water draw-off rate

Bar code with serial number,

7th to 16th digit = product article number

3.6 Serial number

The serial number is located on a plate behind the front flap.

The plate is in a plastic fish plate. You can also display the

serial number in the display.

3.7 CE label

The CE label shows that the products comply with the basic

requirements of the applicable directives as stated on the

identification plate.

The declaration of conformity can be viewed at the manufac-

turer's site.

3.8 Energy Saving Trust Endorsed Products

Only the most energy efficient products can carry the

‘Energy Saving Trust Endorsed Product’ brandmark making

it easy for consumers to choose products that have met strict

energy performance criteria.

Available for: Boilers, Heating controls and chemical inhib-

itors, the Energy Saving Trust endorsed product brandmark

gives consumers confidence that a product will cost less to

run, help lower energy bills and reduce carbon emissions.

About the Energy Saving Trust

Energy Saving Trust is an independent and impartial organ-

isation that provides trusted energy saving advice to em-

Operation 4

0020193967_01 ecoTEC exclusive Operating instructions 7

power millions of people to lead affordable, low energy life-

styles. For more information visit energysavingtrust.org.uk

4 Operation

4.1 Operating concept

Operator

control

element

Function

–Setting the hot water temperature

–Cancelling the activation of an operating

mode

–Cancelling a change to a set value

–Going one selection level higher

–Setting the heating flow temperature

–Reading the system pressure

–Activating the comfort mode

–Activating the operating mode

–Confirm setting

–Going one selection level lower

+ at

the same

time

–Calling up the menu

or –Reducing or increasing the set value

–Scrolling through menu entries

The current function of the and buttons is shown in

the display.

Adjustable values are always displayed as flashing.

You must always confirm a change to a value. Only then is

the new setting saved. You can press to cancel a proced-

ure.

4.2 Basic display

The basic display shows the current condition of the product.

If you press a selection button, the activated function is dis-

played in the display.

The functions that are available depend on whether a con-

troller is connected to the product.

You can switch back to the basic display by:

–Pressing to exit the selection levels

–Not pressing any button for longer than 15 minutes.

If there is an error message present, the basic displays

switches to the error message.

4.3 Menu display

Xxxx

Xxxxxxxxxxx

Xxxx Xxxxxxx

Xxxxxxxxxx

xxxxxx Xxxxxxx

1 Scroll bar

2 Current assignment of

the and buttons.

3 Selection level list

entries

4 Name of the selection

level

You can find an overview of the menu structure in the ap-

pendix.

Operator level –overview (→Page 12)

4.4 Operating levels

The product has two operating levels.

The operating level for the operator shows information and

offers set-up options that do not require any special prior

knowledge.

The operating level for the competent person is protected by

a code.

Operator level –overview (→Page 12)

4.5 Cabinet-type casing

Enclosing the product in cabinet-type casing requires compli-

ance with the applicable design instructions.

If you require cabinet-type casing for your product, consult

a heating specialist company. Never, under any circum-

stances, enclose the product yourself.

4.6 Opening the isolator devices

1. Ask the competent person who installed the product to

explain to you where these isolators are located and

how to handle them.

2. Open the gas stopcock fully.

3. Open the service valves in the heating installation's flow

and return.

Applicability: Product with integrated hot water generation

▶Open the cold-water isolation valve.

4.7 Starting up the product

▶Only start up the product once the casing has been com-

pletely closed.

4 Operation

8Operating instructions ecoTEC exclusive 0020193967_01

4.8 Switching on the product

▶Press the on/off button (1).

◁The "Basic display" (→Page 7) (2) appears on the

display.

4.9 Setting the language

1. Press and hold and at the same time.

2. Also briefly press .

3. Press and hold and until the display shows the

language setting.

4. Select the required language by pressing or .

5. Confirm by pressing .

6. Once you have set the correct language, press

again to confirm this.

4.10 Setting the domestic hot water temperature

Danger!

Risk of death from legionella.

Legionella multiply at temperatures below

60 °C.

▶Have a competent person inform you

about the measures that should be taken

to protect against Legionella in your in-

stallation.

▶Do not set any water temperatures below

60 °C without consulting the competent

person first.

1. Press ( ).

◁The set domestic hot water temperature flashes in

the display.

Conditions: No control connected

▶Change the domestic hot water temperature by pressing

or .

▶Confirm by pressing .

Conditions: Controller connected

▶Use to set the maximum possible domestic hot water

temperature on the product.

▶Confirm by pressing .

▶Set the required domestic hot water temperature on the

control (→Control operating instructions).

4.11 Switching Comfort mode on and off

Applicability: Product with integrated hot water generation

Note

Comfort mode immediately supplies hot water at

the required temperature, without you having to

wait for the water to heat up.

1. Press ( ).

2. Press ( ).

◁Comfort on or Comfort off are shown flashing in

the display.

3. Activate or deactivate Comfort mode by pressing or

respectively.

4. Press to confirm this change.

◁When you have activated Comfort mode, the " "

symbol appears on the basic display. When you

have deactivated Comfort mode, the " " symbol

goes out on the basic display.

4.12 Setting the heating flow temperature

1. Press ( ).

◁The target value of the heating flow temperature

appears on the display.

Note

The competent person may have adjusted

the maximum possible temperature.

Conditions: No controller connected

▶Use or to set the required heating flow temperat-

ure.

▶Confirm by pressing .

Conditions: Controller connected

▶Set the maximum possible heating flow temperature on

the product.

▶Confirm by pressing .

▶Set the required heating flow temperature on the control-

ler (→Controller operating instructions).

4.13 Switching Green iQ mode on and off

Note

Green iQ mode is an energy-saving operating

mode. If this mode is activated, the product oper-

ates in the heating and cylinder charging mode in

such a way that the maximum benefits associated

with condensing technology are achieved.

1. Press and at the same time.

◁The menu is called up.

2. Navigate to the Green iQ menu item and press .

Operation 4

0020193967_01 ecoTEC exclusive Operating instructions 9

–Menu →Basic settings →Green iQ

3. Press or to activate or deactivate Green iQ

mode respectively.

◁Mode on or Mode off will flash on the display.

4. Confirm by pressing .

◁If you have activated Green iQ mode, the symbol

will appear on the basic display. If you have deactiv-

ated Green iQ mode, the symbol will disappear

from the basic display.

4.14 Guaranteeing the correct filling pressure of

the heating installation

4.14.1 Checking the filling pressure of the heating

installation

Note

To ensure that the heating installation operates

smoothly, the filling pressure when the heating

installation is cold must be between 0.1 MPa and

0.2 MPa (1.0 bar and 2.0 bar) or lie between the

two dashed lines in the bar graph display.

If the heating installation extends over several

storeys, a higher filling pressure may be required

for the heating installation. Ask a competent per-

son for details.

In addition, the symbol appears after approx.

one minute.

If the filling pressure in the heating installation

falls below 0.05 MPa (0.5 bar), then the product

switches off. The display alternates between the

fault message F.22 and the current filling pres-

sure.

1. Press twice.

◁The values for the current filling pressure and for the

minimum and maximum filling pressures appear in

the display.

2. Check the filling pressure in the display.

1 / 2

System pressure: 0.1 … 0.2 MPa (1.0 … 2.0 bar)

The filling pressure is in the intended pressure range.

2 / 2

Filling pressure: < 0.08 MPa (< 0.80 bar)

▶Fill the heating installation. (→Page 9)

◁If you have topped up the installation with suf-

ficient heating water, the display automatically

disappears after 20 seconds.

4.14.2 Filling the heating installation

Caution.

Risk of material damage due to heating

water that is extremely calciferous or cor-

rosive or contaminated by chemicals.

Unsuitable tap water damages the seals

and diaphragms, blocks components in the

product and heating installation through

which the water flows and causes noise.

▶Only fill the heating installation with suit-

able heating water.

▶In case of doubt, ask a competent person

for details.

1. Ask a competent person where the filling cock is loc-

ated.

2. Open all radiator valves (thermostatic radiator valves) of

the heating installation.

Conditions: Product for heating mode only

▶Connect the filling cock to a hot water supply in the way

you were told by the competent person.

▶Open the hot water supply.

▶Turn the filling cock on slowly and allow water to flow in

until the required filling pressure has been reached.

▶Close the hot water supply.

▶Purge all radiators.

▶Check the filling pressure in the display.

▶Top up with more water if necessary.

▶Close the hot water supply.

Conditions: Product with integrated hot water generation and filling loop

▶Fit the double non-return valve (1) of the filling line to

the cold water stop valve and secure the valve with the

spring clip (2).

▶To fill, first open the stop valve (3).

▶Slowly open the stop valve (4) so that the water flows

into the heating system. Fill it with water until the re-

quired filling pressure is reached.

▶Close the stop valve (4).

▶Purge all radiators.

▶Check the filling pressure in the display.

▶Top up with more water if necessary.

▶After filling, close both stop valves and disconnect the

filling device by removing the double non-return valve

from the cold water stop valve.

5 Detecting and rectifying faults

10 Operating instructions ecoTEC exclusive 0020193967_01

Note

Both stop valves must be closed while the

heating system is operating and the filling line

must be removed from the double non-return

valve again.

3. Return to the basic display. (→Page 7)

4.15 Switching off the product's functions

4.15.1 Switching off hot water generation

Applicability: Product with hot water generation through external domestic

hot water cylinder

1. To switch off cylinder charging without switching off

heating mode, press ( ).

◁The set hot water temperature flashes in the display.

2. Use the button to set the hot water temperature to

Cylinder charging off.

3. Confirm by pressing .

◁Cylinder charging is switched off.

◁Only the frost protection function for the cylinder

remains active.

4.15.2 Switching off heating mode (Summer

mode)

1. To switch off heating mode without switching off hot

water generation, press ( ).

◁The value of the heating flow temperature appears

in the display.

2. Use the button to set the heating flow temperature to

Heating off.

3. Confirm by pressing .

◁Heating mode is switched off

◁The symbol appears in the display.

4.16 Protecting the heating installation against

frost

4.16.1 Frost protection function

Caution.

Risk of material damage due to frost.

The frost protection function cannot guaran-

tee flow through the entire heating installa-

tion, which means that parts of the heating

installation may freeze and therefore become

damaged.

▶During a period of frost, ensure that the

heating installation remains in operation

and that all rooms are sufficiently heated,

even when you are away.

Note

To keep the frost protection devices active, you

should switch your product on and off using the

controller, if one is provided.

If the heating flow temperature falls below 5 °C when the

on/off button is on, the product comes into operation and

heats the circulating water to approx. 30 °C on both the heat-

ing side and the hot water side (if available).

4.16.2 Draining the heating installation

Another way to protect the heating installation and the

product from frost for very long switch-off times is to drain

them completely.

▶Consult a competent person about this.

5 Detecting and rectifying faults

▶If faults occur, proceed in accordance with the table in

the appendix.

Troubleshooting (→Page 12)

▶If you are unable to eliminate the faults using the spe-

cified measures, if fault messages (F.xx) are displayed,

or if the product does not function correctly, contact a

competent person.

6 Calling up (Live monitor) status

codes

1. Press and at the same time.

◁The menu is called up.

2. Navigate to Menu →Live monitor and confirm by

pressing .

Status codes –Overview (→Page 13)

7 Care and maintenance

7.1 Maintenance

An annual inspection of the product carried out by a compet-

ent person is a prerequisite for ensuring that the product is

permanently ready and safe for operation, reliable, and has a

long working life.

7.2 Caring for the product

Caution.

Risk of material damage caused by un-

suitable cleaning agents.

▶Do not use sprays, scouring agents, de-

tergents, solvents or cleaning agents that

contain chlorine.

▶Clean the casing with a damp cloth and a little solvent-

free soap.

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