Vaillant HOME SYSTEM 12 -A, HOME SYSTEM 15 -A, HOME SYSTEM 18 -A, HOME SYSTEM 25-A Operating Instructions Manual

For the operator
Operating instructions
Operating instructions
Publisher/manufacturer
Vaillant GmbH
HOME
SYSTEM
GB, IE

Contents

Contents
1 Safety ............................................ 3
1.1 Action-related warnings ................. 3
1.2 Intended use .................................. 3
1.3 General safety information............. 4
2 Notes on the documentation ...... 7
2.1 Observing other applicable
documents ..................................... 7
2.2 Storing documents......................... 7
2.3 Applicability of the instructions....... 7
3 Product description..................... 7
3.1 CE label ......................................... 7
3.2 Serial number ................................ 7
3.3 Information on the identification
plate ............................................... 7
3.4 Product design............................... 8
3.5 Overview of the operator control
elements ........................................ 8
3.6 Description of the display............... 9
3.7 Description of button functions ...... 9
3.8 Operating levels........................... 10
4 Operation.................................... 10
4.1 Starting up the product ................ 10
4.2 Basic display................................ 10
4.3 Checking the heating system
pressure....................................... 10
4.4 Filling the heating installation....... 11
4.5 Selecting the operating mode ...... 11
4.6 Setting the hot water
temperature ................................. 11
4.7 Setting the heating flow
temperature ................................. 11
4.8 Product settings ........................... 12
4.9 Switching the product to
standby mode .............................. 12
4.10 Frost protection............................ 12
5 Troubleshooting ........................ 13
5.1 Detecting and rectifying faults...... 13
5.2 Fault codes in the display ............ 13
6 Care and maintenance .............. 13
6.1 Maintenance ................................ 13
6.2 Caring for the product .................. 13
6.3 Checking the condensate drain
pipework and tundish ................... 13
7 Decommissioning...................... 14
7.1 Temporarily decommissioning
the product................................... 14
7.2 Permanently decommissioning
the product................................... 14
8 Recycling and disposal ............. 14
9 Guarantee and customer
service ........................................ 14
9.1 Guarantee.................................... 14
9.2 Customer service......................... 14
Appendix ............................................... 15
A Operator level – overview ......... 15
B Troubleshooting ........................ 15
2 Operating instructions HOME 0020224356_00
Safety 1

1 Safety

1.1 Action-related warnings Classification of action-re-

lated 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 cent-
ral 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 maintenance conditions listed in the instructions.
This product can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervi­sion or instruction 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.
0020224356_00 HOME Operating instructions 3
1 Safety

1.3 General safety information

1.3.1 Installation by skilled
tradesmen 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, particu­larly the "Safety" section and the warnings.
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
communication 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 isol-
ator cock on the product.
Warn other occupants in the
building by yelling or banging on doors or walls.
Leave the building immedi-
ately and ensure that others do not enter the building.
Notify the gas supply com-
pany or National Grid Transco +44 (0) 800 111999 by tele­phone from outside of the building.

1.3.4 Risk of death due to a blocked or leaking flue gas pipe

What to do if you smell flue gas in the property:
Open all accessible doors
and windows fully to provide ventilation.
Switch off the product.Inform a competent person.

1.3.5 Risk of death from escaping flue gas

If you operate the product with an empty condensate siphon, flue gas may escape into the room air.
4 Operating instructions HOME 0020224356_00
Safety 1
In order to operate the
product, ensure that the con­densate siphon is always full.

1.3.6 Risk of death due to explosive and flammable materials

Do not use or store explosive
or flammable materials (e.g. petrol, paper, paint) in the in­stallation room of the product.

1.3.7 Risk of death due to lack of safety devices

A lack of safety devices (e.g. expansion relief valve, expan­sion vessel) can lead to poten­tially fatal scalding and other injuries, e.g. due to explosions.
Ask a competent person
to explain how the safety devices work and where they are located.

1.3.8 Risk of death due to changes to the product or the product environment

Never remove, bridge or
block the safety devices.
Do not alter the safety
devices in any way.
Do not damage or remove
any seals on components.
Do not make any changes:
The product itself
to the gas, air, water and
electricity supplies
– to the entire flue gas install-
ation
– to the entire condensate
drain system
to the expansion relief valveto the drain linesto constructional condi-
tions that may affect the operational reliability of the product

1.3.9 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 specified.
1.3.10 Risk of corrosion
damage due to unsuitable combustion and room air
Sprays, solvents, chlorinated cleaning agents, paint, adhes­ives, ammonia compounds, dust or similar substances may lead to corrosion on the product and in the air/flue pipe.
0020224356_00 HOME Operating instructions 5
1 Safety
Ensure that the supply of
combustion air is always free of fluorine, chlorine, sulphur, dust, etc.
Ensure that no chemical sub-
stances are stored at the in­stallation site.

1.3.11 Risk of material damage caused by frost

Ensure that the heating in-
stallation always remains in operation during freezing con­ditions and that all rooms are sufficiently heated.
If you cannot ensure the op-
eration, have a competent person drain the heating in­stallation.
6 Operating instructions HOME 0020224356_00
Notes on the documentation 2
2 Notes on the
documentation

2.1 Observing other applicable documents

You must observe all operating instruc-
tions enclosed with the system compon­ents.

2.2 Storing documents

Keep this manual and all other applic-
able documents safe for future use.

2.3 Applicability of the instructions

These instructions apply only to:
Product article number
Article num­ber
HOME SYS­TEM 12 -A (H-GB)
HOME SYS­TEM 15 -A (H-GB)
HOME SYS­TEM 18 -A (H-GB)
HOME SYS­TEM 25 -A (H-GB)
0010019934 41-044-94
0010019935 41-044-95
0010019936 41-044-96
0010019937 41-044-97
These products are only designed for nat­ural gas systems.
Gas Council Number

3 Product description

3.1 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 manufacturer's site.

3.2 Serial number

The serial number is on the identification plate on the underside of the product.

3.3 Information on the identification plate

The identification plate is mounted on the underside of the product in the factory.
The identification plate keeps record of the country in which the product is to be installed.
Information on the identi­fication plate
Serial number For quality control purposes;
HOME SYS­TEM XX, Gxx – xx mbar (x kPa)
Meaning
Barcode with serial number
3rd and 4th digits = year of production For quality control purposes; 5th and 6th digits = week of production For identification purposes; 7th to 16th digits = product article number For quality control purposes; 17th to 20th digits = place of manufacture
Product description
Gas group and gas connec­tion pressure as set at the factory
0020224356_00 HOME Operating instructions 7
3 Product description
1
1
2
34
5
Information on the identi­fication plate
Cat. Approved gas category
Condensing technology
Type: Xx3(x) Permissible flue gas connec-
PMS Maximum water pressure in
PMW Maximum water pressure in
V/Hz Electric connection
W Max. electrical power con-
IP Level of protection
Pn Nominal heat output range
Pnc Nominal heat output range
P Nominal heat output range
Qn Nominal heating load range
Qnw Nominal heating load range
T
max.
NOx NOx class for the product
Code (DSN) Specific product code
Meaning
Efficiency class of the boiler in accordance with EC Dir­ective 92/42/EEC
tions
heating mode
hot water handling mode
sumption
Heating mode
Hot water generation
in heating mode
in heating mode (condensing technology)
in hot water handling mode
in heating mode
in hot water handling mode
Max. flow temperature
"CE label" section

3.4 Product design

1 Control elements

3.5 Overview of the operator control elements

Read the instructions.
"Recycling and disposal" section
GC no. Gas council number
8 Operating instructions HOME 0020224356_00
1 Display 2 3
button
button
4
button
5
button
Product description 3
1
2
3

3.6 Description of the display

1 Operating in-
formation
2 Active operating
mode, selecting and confirming the operating mode
Symbol Meaning
3 Display showing
the current heat­ing flow temper­ature, the filling pressure in the heating install­ation, the oper­ating mode or a fault code
Burner operating correctly
– Burner on
Heating installation filling pressure
– Permanently on: Filling
pressure in the permitted range.
– Flashing display: Filling
pressure is outside of the permissible range or the purging function has been activated.
DHW mode
– Permanently on: Hot wa-
ter activated
– Flashing: Burner on when
the domestic hot water cylinder is in reheating mode
Hot water saving mode
– Hot water temperature <
50 °C
– Normal operating temper-
ature
Symbol Meaning
Heating mode
– Permanently on: Heating
mode activated
– Flashing: Burner on in
heating mode
Display flashing:
Switching on the productFault
Setting confirmed
/
OFF – Appears when the
Fault in the product
– Appears instead of the
basic display.
product goes into standby mode.

3.7 Description of button functions

Button Meaning
Selecting the operating modeConfirm the operating modeConfirm settingIncrease the display contrast
Setting the hot water temperat-
or
ure
– Setting the heating flow tem-
perature
– Increase or decrease the selec-
ted setting
Increase the display contrastActivate the product: On/off
(standby)
– Reset the product
Adjustable values flash on the display.
You must confirm any change to a value. Only then is the new setting saved.
If you do not press any buttons for five seconds, the displays switches back to the basic display.
If you do not press any buttons for one minute, the display contrast decreases.
0020224356_00 HOME Operating instructions 9

4 Operation

12

3.8 Operating levels

The product has two operating levels:
– The operator level shows the most im-
portant information and offers set-up options which do not require any special prior knowledge.
– Specialised knowledge is required in or-
der to use the installer level (access for competent persons). This is therefore protected by an access code.
Operator level – overview (Page 15)
4 Operation

4.1 Starting up the product

4.1.1 Opening the isolator devices

Conditions: The competent person who installed
the unit will explain where the isolator devices are
and how to handle them.
Ensure that the gas isolator cock is fully
open.
Ensure that the stop cocks in the heat-
ing installation's flow and return are open.
Ensure that the cold water stop cock is
open.

4.1.2 Starting up the product

4.2 Basic display

The filling pressure in the heating installa­tion and the operating mode are shown in the display's basic display.
To return to the basic display:
– Wait more than five seconds without
pressing any buttons.
If a fault message is present, the basic display switches to the fault code.

4.3 Checking the heating system pressure

1. Once a month, check that the pressure
in the central heating system, which is displayed on the user interface, is between 0.1 MPa and 0.15 MPa (1.0 bar and 1.5 bar).
If the filling pressure is correct, no
action needs to be taken.
If the filling pressure is too low, add
more water to the heating installa­tion.
Note
If the heating flow temperature is shown in the display, press and hold the and buttons
Press the (2) button.
When the unit is switched on, the
"Basic display" is shown in the display (1).
2. Fill the heating installation. (Page 11)
at the same time for longer than five seconds, or temporarily deactivate heating mode in order to display the pressure.
10 Operating instructions HOME 0020224356_00
Operation 4

4.4 Filling the heating installation

Caution. Risk of material damage due
to heating water that is ex­tremely calciferous or corros­ive 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 install-
ation with suitable heating water.
In case of doubt, ask a com-
petent person for details.
Note
The competent person is respons­ible for filling the heating installa­tion the first time, any subsequent top-ups and the water quality.
The operator alone is respons­ible for topping up the water in the heating installation.
1. Open all radiator valves (thermostatic radiator valves) of the heating installa­tion.
2. Slowly open the filling cock, as shown to you by the competent person.
3. Fill with water until the required filling pressure is reached.
4. Check the filling pressure in the display.
5. Close the filling cock after filling.

4.5 Selecting the operating mode

Note
The unit is always activated with the preselected operating mode.
Press repeatedly until the display
shows the required operating mode.
Symbol Operating mode
Heating + hot water
+
Heating only
Hot water only
No requirement

4.6 Setting the hot water temperature

Conditions: The temperature is controlled via the
domestic hot water cylinder's thermostat.
Set the hot water temperature on the
controller.
Note
If you press the or button, the display shows the sym­bol.
Conditions: The temperature is controlled via the
domestic hot water cylinder's temperature sensor.
Set the hot water temperature on the
controller.

4.7 Setting the heating flow temperature

Conditions: Temperature controlled by the boiler,
with heating mode activated
Set the heating flow temperature on the
boiler (Page 12).
Note
The competent person may have adjusted the maximum possible temperature.
0020224356_00 HOME Operating instructions 11
4 Operation
Conditions: Temperature controlled by the control-
ler, with heating mode activated
Set the maximum heating flow temper-
ature on the boiler (Page 12).
Set the room temperature on the con-
troller.
The actual heating flow temperature
is set automatically by the controller.
Conditions: Outside temperature sensor connected
to the boiler, with heating mode activated
When you press the , or but-
ton.
The display shows the heating flow
temperature calculated by the boiler.
The actual heating flow temperature
is set automatically by the boiler.

4.8 Product settings

Note
The sequence in which the avail­able settings are shown depends on the operating mode selected.
If the Domestic hot water + Heat- ing operating mode is selected, the hot water temperature must be confirmed in order to set the flow temperature of the heating.
1. Press the or button to set the tem­perature.
2. Press the button to confirm.
4.9 Switching the product to
standby mode
Press the button for less than three
seconds.
Once the requirement currently in
use has finished, the display will show OFF and go out.
The product is now in standby mode.The product's frost protection func-
tion is activated.
The main power supply is not inter-
rupted. The product continues to be supplied with power.

4.10 Frost protection

4.10.1 The product's frost protection function

The frost protection function switches on the boiler and the pump as soon as the protection temperature in the heating cir­cuit is reached.
– Protection temperature: 12
The pump stops once the minimum wa­ter temperature in the heating circuit is reached.
– Minimum water temperature: 15
If the burner ignition temperature in the heating circuit is reached, the burner switch is switched on and continues to operate until the burner anti-cycling temperature is reached.
Burner ignition temperature: 7 ℃ – Burner anti-cycling temperature: 35
The hot water circuit (cold and hot water) is not protected by the boiler.
Frost protection for the system can only be guaranteed by the boiler.
A controller is required to control the tem­perature of the system.

4.10.2 Frost protection for the system

Note
Ensure that the product's power and gas supply are working cor­rectly.
Conditions: If you are away from home for several
days, Without controller
Switch the product to standby mode.
(Page 12)
12 Operating instructions HOME 0020224356_00
Troubleshooting 5
Conditions: If you are away from home for several
days, With controller
Program the number of days you will
be away in the controller to activate the frost protection devices.
Conditions: If you are away from home for a pro-
longed period
Contact a qualified competent person,
who can completely drain the system or protect the heating circuit by adding a special frost protection agent for heating installations.

5 Troubleshooting

5.1 Detecting and rectifying faults

If problems occur whilst operating the
product, you can carry out certain self­checks with the aid of the table in the appendix. Troubleshooting (Page 15)
If the product still does not function
without problems after the checks have been carried out using the table, con­tact your competent person to rectify the problem.

5.2 Fault codes in the display

Fault codes have priority over all other dis­plays. If several faults occur at the same time, the corresponding codes are dis­played alternately for two seconds each.
If your product displays a fault code
(F.xx), contact a competent person.

6 Care and maintenance

6.1 Maintenance

An annual inspection of the product carried out by a competent person is a prerequis­ite for ensuring that the product is perman­ently ready and safe for operation, reliable, and has a long working life.

6.2 Caring for the product

Caution. Risk of material damage
caused by unsuitable clean­ing agents.
Do not use sprays, scouring
agents, detergents, solvents or cleaning agents that con­tain chlorine.
Clean the casing with a damp cloth and
a little solvent-free soap.

6.3 Checking the condensate drain pipework and tundish

The condensate drain pipework and tun­dish must always be penetrable.
Regularly check the condensate drain
pipework and tundish for faults and, particularly, for blockages.
You must not be able to see or feel any obstructions in the condensate drain pipe­work and tundish.
If you notice a fault, have it rectified by
a competent person.
0020224356_00 HOME Operating instructions 13

7 Decommissioning

7 Decommissioning

7.1 Temporarily decommissioning the product

Temporarily decommission the product
only if there is no risk of frost.
Switch off the product via the main
switch provided on-site.
The display goes out.
When decommissioning for an exten-
ded period (e.g. holiday), you should also close the gas isolator cock and the cold water stop cock.

7.2 Permanently decommissioning the product

Have a competent person permanently
decommission the product.

8 Recycling and disposal

The competent person who installed
your product is responsible for the dis­posal of the packaging.
If the product is identified with this
symbol:
In this case, do not dispose of the
product with the household waste.
Instead, hand in the product to a collec-
tion centre for old electrical or electronic appliances.
If the product contains batteries that are marked with this symbol, these bat­teries may contain substances that are hazardous to human health and the envir­onment.
In this case, dispose of the batteries at
a collection point for batteries.
9 Guarantee and customer
service

9.1 Guarantee

– Two year guarantee
Vaillant provides this appliance with a parts and labour guarantee against defects that may occur within twenty-four months of the installation date. For the 2nd year of the guarantee to be valid an annual ser­vice must be carried out by a competent person approved at the time by the Health and Safety Executive one year after install­ation. The cost of this annual service is not included in the guarantee.
– Registering with us
Registration is simple. Just complete the Guarantee Registration Card and return to Vaillant within 30 days of installation. Your details will then be automatically registered within the Vaillant scheme.
– Immediate help
If your Vaillant boiler develops a fault your first action should be to contact your in­staller, as his professional assessment is needed under the terms of our Guarantee. If you are unable to contact your installer, phone Vaillant Service Solutions: 0870 6060 777

9.2 Customer service

To ensure regular servicing, it is strongly recommended that arrangements are made for a Maintenance Agreement. Please contact Vaillant Service Solutions for further details.
Vaillant Service Solutions: 0330 100 3461
14 Operating instructions HOME 0020224356_00

Appendix

Appendix A Operator level – overview
Setting level Values Unit Increment, select Factory set-
Min. Max.
Heating installation
Pressure in the heating in­stallation
Heating flow temperature Current value 1 60
Current value bar 0.1
1 1.5
38 Preset
in the system

B Troubleshooting

Fault Cause Measure
Product does not start up:
No hot waterHeating does
not heat up
The gas isolator cock installed on-site and/or the gas isolator cock on the product is closed.
The cold water stop cock is closed. Open the cold water stop cock.
The power supply in the building is dis­connected.
The product is switched off. Switch on the product ("Switch-
The heating flow temperature or hot water temperature has been set too low.
The system pressure is insufficient. Low water pressure in the heating in­stallation (fault code: F.22).
The system pressure is too high. Purge a radiator in order to re-
There is air in the heating installation. Purging the radiators
Open both gas isolator cocks.
Check the fuse in the build­ing. The product automatically switches on after the power supply is restored.
ing on the product" section).
Set the heating flow temperat­ure and hot water temperature ( "Setting the heating flow temper­ature" section/"Setting the hot water temperature" section). Fill the heating installation ( "Filling the heating installation" section). If the pressure drops frequently, contact your competent person about this.
duce the pressure in the heating installation, or contact your com­petent person about this.
If the problem occurs again: In­form the competent person
tings
0020224356_00 HOME Operating instructions 15
Appendix
Fault Cause Measure
Product does not start up:
No hot waterHeating does
not heat up
Hot water gener­ation functioning correctly; heating does not start up.
After three successive failed ignition attempts, the system switches to fault mode (fault code: F.28).
The external controller is not set cor­rectly.
Press the button. The product carries out a new ignition attempt. If the ignition problem is not rec­tified after three fault clearance attempts, contact a competent person.
Set the external controller cor­rectly (Controller operating in­structions).
16 Operating instructions HOME 0020224356_00
0020224356_00 14.10.2015
Vaillant Ltd.
Nottingham Road Belper Derbyshire DE56 1JT Telephone 0330 100 3461 Telephone (renewables) 0207 022 0928 Vaillant Service Solutions 0330 100 3461 Spares Technical Enquiries 01773 596615
info@vaillant.co.uk technicalspares@groupservice.co.uk
www.vaillant.co.uk
© These instructions, or parts thereof, are protected by copyright and may be reproduced or distributed only
with the manufacturer's written consent.
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