Vaillant ecoTEC plus SERIES User manual

Instructions for use
ecoTEC plus
Wall hung open vent condensing boiler
GB
For the owner

Instructions for use ecoTEC plus / 0020020829_032
Appliance characteristics . . . . . . . . . . . . . . . . . . . . . 2
1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Notes on the documentation. . . . . . . . . . . . . . . . 3
1.1.1 Other instruction supplied with this appliance. 3
1.1.2 Retention of the documents . . . . . . . . . . . . . . . . 3
1.2 Symbols used in this manual. . . . . . . . . . . . . . . . 3
1.3 CE marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Setup and adjustments. . . . . . . . . . . . . . . . . . . . . 4
2.2 What to do in an emergency . . . . . . . . . . . . . . . . 4
2.3 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . 4
2.4 Modifications in and around the boiler . . . . . . . 4
2.5 Installation and setting. . . . . . . . . . . . . . . . . . . . . 4
3 Information on installation and operation . . 5
3.1 Factory guarantee. . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1.1 Two year guarantee for ecoTEC plus
appliances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1.3 Registering with us . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1.4 Immediate help. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.3 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.4 Recycling and disposal . . . . . . . . . . . . . . . . . . . . . 5
3.4.1 The appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.4.2 Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.1 Overview of controls on ecoTEC plus . . . . . . . . 6
4.2 Initial checks before turning on . . . . . . . . . . . . . 6
4.2.1 Opening the gas service valve . . . . . . . . . . . . . . 6
4.3 Turning the boiler on . . . . . . . . . . . . . . . . . . . . . . 7
4.4 Domestic hot water . . . . . . . . . . . . . . . . . . . . . . . . 7
4.4.1 Setting the water temperature . . . . . . . . . . . . . . 7
4.5 Heating operation . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.5.1 Setting the maximum radiator temperature
control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.5.2 Setting a room or outside temperature
controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.6 Pump exercise . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.7 Status displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.8 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.8.1 Ignition problems. . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.8.2 Flue problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.9 Turning off the boiler . . . . . . . . . . . . . . . . . . . . . . 9
4.10 Frost protection . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.11 Maintenance and customer service . . . . . . . . . . 9
Appliance characteristics
The Vaillant ecoTEC plus boilers are compact, wall hung
condensing open vented boilers, designed to provide
central heating from a fully pumped open vented or
sealed water system and hot water where a separate in-
direct hot water cylinder is incorporated to the system.
The central heating water temperature can be adjusted
on the boiler. The domestic hot water temperature can
also be adjusted on the boiler if the applicable optional
accessories are fitted. Once the controls are set the
boiler operates automatically. A frost protection
programme is also included.
Please read these instructions and follow them carefully
for the correct and economical use of your boiler. These
instructions are applicable to the following ecoTEC plus
boilers, available in Natural Gas.
All ecoTEC plus boilers can be converted to LPG.
Appliance Maximum output
ecoTEC plus 415 15 kW
ecoTEC plus 418 18 kW
ecoTEC plus 428 28 kW
ecoTEC plus 438 38 kW
Contents
Appliance Characteristics

3Instructions for use ecoTEC plus / 0020020829_03
1 Introduction
1.1 Notes on the documentation
To ensure clarity of information in instructions a new
European standard of advice and symbols is being intro-
duced. To ensure compliance with this new standard the
following details are included.The following information
is intended to help you throughout the boilers entire
instruction pack.
We assume no liability for any damage caused by
non-observance of these instructions.
1.1.1 Other instruction supplied with this appliance.
For the owner:
Short operating instructions no. 838404
Warranty card with return envelope no. 802922
For the installer/service engineer:
Instructions for installation
and servicing no. 0020020828
Flue installation instructions no. 834449
The instructions for any accessories and controllers
used also apply.
The Benchmark gas boiler commissioning checklist
(in the installation manual) should be completed by the
installer and/or the commissioning engineer.
If, after reading these instructions, you have any
questions on the operation of the boiler, please contact
either your installer or Vaillant Technical Department.
1.1.2 Retention of the documents
Please store this literature and all related documents so
that they are available whenever they are required.If
you move please pass on the documents to the buyer.
1.2 Symbols used in this manual
Please observe the safety instructions in this literature
for the operation of the appliance.
dDanger!
Immediate risk of serious injury or death.
eDanger!
Risk of death from electric shock!
HDanger!
Risk of burns or scalding!
aCaution!
Potentially dangerous situations for the
product and environment.
hNote!
Useful information and instructions.
• Symbol for a necessary task
1.3 CE marking
The purpose of CE marking is to certify that the boiler
complies with the requirements of the directives cover-
ing gas fired appliances (Council directive 90/396/EEC)
and electromagnetic compatibility (Council directive
89/336/EEC).
These appliances also comply with the requirements of
the directive on operating efficiency (Council directive
92/42/EEC)
hVaillant Ltd. support the Benchmark initiative.
At the rear of the installation manual, you will
find a Benchmark gas boiler commissioning
checklist. It is very important that this is
completed correctly at the time of installation,
commissioning and hand over to the user.
Introduction 1

Instructions for use ecoTEC plus / 0020020829_034
2 Safety
2.1 Setup and adjustments
Installation and adjustment of the boiler as well as service,
maintenance and repair of the boiler may only be carried out
by a competent person in accordance with the Gas Safety
(Installation and Use) Regulations 1998. (In the U.K. “CORGI”
registered installers undertake the work to a safe and satis-
factory standard). If the boiler is installed in a compartment
do not obstruct any purpose provided ventilation openings,
and do not use the compartment for storage purposes.
2.2 What to do in an emergency
dDanger!
Smell of gas. Risk of poisoning and explosion
due to a malfunction
If you smell gas or suspect a gas leak:
• Do not switch lights on or off.
• Do not use any other electrical switches.
• Do not use a telephone in the hazardous area.
•
Do not use naked flames, such as matches or cigarette lighters.
• Do not smoke.
• Turn off the gas supply at the gas meter.
• Open the windows and doors.
• Warn other residents.
• Get out of the house.
• Consult your gas supplier, service agent or other
competent person.
• Telephone the National emergency number 0800 111 999
2.3 Safety instructions
Always observe the following safety instructions and regulations.
dDanger!
Inflammable mixtures of gas and air may explode. Do not
use or store explosive or easily flammable substances
such as petrol or paint in the same room as the appliance.
dDanger!
Risk of poisoning and explosion due to a malfunc-
tion. Never put the safety devices out of operation
or tamper with them so as to impair their function.
2.4 Modifications in and around the boiler
No modifications may be made to the following items:
- The boiler
- The gas, water and electrical supply
- The flue system
- The safety valve for the heating water
- Any structural changes around the appliance that
could affect the operational safety of the boiler.
aCaution!
Inappropriate modifications can cause damage.
Never tamper with the boiler or other parts of
the system. Never attempt to perform mainte-
nance or repairs yourself.
- Do not damage or remove seals on components. Only
authorised engineers or our customer service may
remove sealed components.
HDanger!
Risk of scalding. The water coming out of the
tap can be very hot.
aCaution!
Risk of damage. Do not use sprays, solvents,
chlorinated cleaning agents, paint, adhesives
or similar substances in the vicinity of the
appliance. These substances can cause
corrosion, including the flue system.
2.5 Installation and setting
aCaution!
The appliance must be installed and serviced by
a Competent Person as stated in the Gas Safety
(Installation and Use) Regulations 1998. In IE,
the installation must be in accordance with the
current edition of I.S.813 ‘Domestic Gas Instal-
lations’, the current Building Regulations and
reference should be made to the current ETCI
rules for electrical installation.
aCaution!
The appliance may only be operated with its
case properly and permanently closed. Other-
wise, in unfavourable conditions, material
damage or even injury or death can result.
Frost protection
Your boiler is equipped with a frost protection function:
If the heating water temperature drops below 5°C when
the electrical supply to the boiler is on, then the boiler goes
into operation and heats the boiler circuit to approx. 30°C.
hNote!
It cannot be guaranteed that water will circu-
late throughout the entire heating system.
If the boiler is not operated for several hours during
very cold weather there is the possibility of the system
freezing. Please ensure that if you are absent during a
period of frost the central heating remains in operation
and all rooms are kept above free-zing point. It must be
remembered, however, that the boiler will be automati-
cally switched off by the built in monitoring devices if
certain faults occur, e.g. interruption in the gas or
electricity supply or faults in the flue gas system. To
overcome this possibility you can drain both the central
heating system and boiler.
hNote!
Frost protection and monitoring devices can
only function when the electrical supply to the
boiler is on.
2 Safety

5Instructions for use ecoTEC plus / 0020020829_03
3 Information on installation and
operation
3.1 Factory guarantee
3.1.1 Two year guarantee for ecoTEC plus appliances
Vaillant undertakes to rectify any manufacturing defect
that occurs 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 CORGI registered
installer one year after installation. The cost of this an-
nual service is not included in the guarantee.
3.1.3 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.
hNote!
No receipt will be issued.
3.1.4 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 Guaran-
tee. If you are unable to contact your installer, phone
Vaillant Service Solutions: 0870 6060 777
3.2 Intended use
Vaillant ecoTEC boilers are state-of-the-art appliances which
have been constructed in accordance with recognised safety
regulations. Nevertheless, there is a risk of injury or death
to the user or others and damage to the appliance or other
property in the event of misuse or use for which the appli-
ance is not intended. This appliance is designed to generate
heat for connected hot water central heating systems. Any
other use is considered to be use other than intended. The
manufacturer/supplier is not liable for any resulting dam-
age. The user alone bears the risk. Intended use includes the
observance of the operating and installation manual and all
other applicable documents, as well as adherence to the
maintenance and inspection conditions.
aCaution!
Any incorrect use is forbidden.
3.3 Care
• Clean the exterior of your appliance with a damp cloth
and a little soap.
hNote!
Do not use scouring or cleaning agent, which
might damage the housing or plastic fittings.
3.4 Recycling and disposal
Both your Vaillant ecoTEC boiler and its packaging
consist mainly of recyclable raw materials.
3.4.1 The appliance
Do not dispose of your Vaillant ecoTEC boiler or any of
its accessories with household waste. Make sure the old
appliance and any existing accessories are disposed of
properly.
3.4.2 Packaging
Please leave the disposal of the transport packaging to
the expert company which installed the appliance.
hNote!
Please observe the applicable national legal
regulations.
Information on installation and operation 3

Instructions for use ecoTEC plus / 0020020829_036
4 Operation
4.1 Overview of controls on ecoTEC plus
1
8
7
6
5
4
2
3
Fig. 4.1 ecoTEC plus controls
For access to the controls open the front flap by pulling
at the centre of the case strip.
1 Display indicating the current heating flow temperature, the
operating mode or additional information.
2 The “i” information button.
3 Built in control/timer (if fitted).
4 “+” button for moving forward in the display.
5 “-” button for moving back in the display.
6 “Reset” button.
7 Maximum radiator temperature control.
8 Optional maximum hot water temperature control available
only when additional optional accessories are fitted (VR 65,
VRT 360, VRC 400).
Advanced multifunctional display system
1
Fig. 4.2 Display on ecoTEC plus
The ecoTEC plus appliance is fitted with a digital infor-
mation and analysis system. This system provides infor-
mation on the operating status of your appliance.During
normal operation, the display (1) shows the current
heating flow temperature (in this example 45 °C). In the
event of a fault, an error code appears instead of the
temperature. The display also gives the following infor-
mation:
1Indication of the current heating flow temperature or
display of a status or error code
Fan speed malfunction.
Fan speed malfunction.
As long as this symbol appears in the display, a heating
flow temperature is set by the vrnetDIALOG accessory,
which means the appliance uses temperatures other
than those set using the controls (7) and (8).
This condition can only be ended:
- using vrnetDIALOG or
- by a change in temperature at controllers (7) or (8)
of more than = ± K.
This condition cannot be ended:
- with the “Reset” button (6) or
- by turning the appliance off or on.
Heating mode active.
Illuminated: Heating mode.
Flashing: Anti cycling mode active.
Hot water supply active.
Illuminated: Heating of an indirect hot water cylinder
turned on.
Flashing: Heating demand from the hot water cylinder,
burner on if optional accessories are fitted.
External pump is running.
Gas valve is activated.
Flame with cross:
Boiler is at lock out and will display fault code.
Flame without cross:
Normal burner operation.
4.2 Initial checks before turning on
4.2.1 Opening the gas service valve
• Ensure the gas service valve is open.
• Ensure the electrical supply to the boiler is turned on.
off
on
Fig. 4.3 Opening the gas service valve
4 Operation

7Instructions for use ecoTEC plus / 0020020829_03
4.3 Turning the boiler on
2
1
Fig. 4.4 Switching on the appliance
• Turn on appliance at control (1).
When you switch on the appliance, the current operat-
ing status appears in the display (2).
To adjust the appliance according to your requirements,
read sections 4.4 and 4.5, which describe the setting
options for hot water supply and heating.
aCaution!
Risk of damage. The boiler frost protection
and monitoring systems are only active when
the electrical supply to the boiler is on and it is
not disconnected from the main power supply.
4.4 Domestic hot water
The control of domestic hot water is only available if
you have fitted the optional accessories (VR 65,
VRT 360, VRC 400. The boiler must only be used when
the heating system contains water.
4.4.1 Setting the water temperature
2
3
Fig. 4.5 Setting the water temperature
• Switch on the appliance as described in section 4.3.
• The domestic hot water temperature can be adjusted
using the hot water temperature control (3).
• Turn the control clockwise to increase the tempera-
ture and anti-clockwise to decrease the temperature.
This corresponds to:
- left limit approx. 35 °C
- right limit max. 65 °C.
4.5 Heating operation
The boiler must only be used when the heating system
contains water.
4.5.1 Setting the maximum radiator temperature
control
2
1
Fig. 4.6 Setting the maximum radiator temperature control
When you adjust the temperature, the set value is
shown in the display (2). After five seconds the display
returns to standard mode (the current heating flow
temperature).
Normally you can adjust the knob (1) continuously up to
a flow temperature of 75 °C. However, higher tempera-
tures can be set on your appliance, have your engineer
make adjustments so that you can operate the heating
system at higher flow temperatures.
4.5.2 Setting a room or outside temperature
controller
2
1
Fig. 4.7 Setting a room or outside temperature controller
• Set the room thermostat (1) and/or the thermostatic
radiator valves (2) according to the instructions
supplied with the control(s).
Operation 4

Instructions for use ecoTEC plus / 0020020829_038
hNote!
Vaillant offer room thermostat/time control
accessories which give accurate and economic
room temperature control as well as improved
comfort.
The boiler will now operate automatically to provide
central heating for the conditions selected on the
external controls.
After the boiler stops operating the pump will continue
to operate for a short period to fully disperse the heat
from the boiler.
After a power cut or every 23 hour in frost setting /
summer mode the pump will run for one minute to pre-
vent it from sticking. This will also occur during normal
operating if there is no demand for more than 24 hours.
4.6 Pump exercise
hNote!
The boiler incorporates an anti-cycling econo-
miser control to prevent energy wasteful on
and off operation of the boiler for short periods
when in the central heating mode. When turning
the room thermostat to a higher setting there
may be a short delay before the boiler operates.
4.7 Status displays
1
2
Fig. 4.8 Status displays
The status displays provide information on the opera-
ting status of the appliance.
• Press the “i” button (1) to activate the status displays.
The display (2) then shows the current status code,
for example “S. 4” for burner operation. The table
below explains the most important status codes.
In switching phases, for example on starting up again
after the flame was extinguished, the status message
“S.” briefly appears.
• Press the “i” button (1) again to switch the display
back to normal mode.
Display Meaning
Displays during heating operation
S. 0 No heat required
S. 1 Pump running
S. 3 Ignition sequence (heating operation)
S. 4 Burner ignited
S.6 Fan and pump overrun
S.7 Pump overrun
S. 8 Anti cycling mode (after heating operation)
S. 30 Room thermostat no heating demand
S. 31 Summer mode active
S. 34 Frost protection mode
Displays in cylinder charging mode
(with optional accessories fitted)
S. 20 Cylinder charging request
S. 24 Cylinder charging burner on
Table 4.1 Status codes (selection, a complete set of status codes
can be found in the installation and servicing manual)
4.8 Troubleshooting
In the unlikely event that a problem occurs with the
operation of the ecoTEC boiler, the following points
should be checked:
Boiler fails to operate:
– Is the gas supply turned on?
– Is there enough water in the heating system?
– Is the electrical supply switched on?
– Is there an ignition problem?
aCaution!
Inappropriate modifications can cause damage.
If your boiler still does not operate then please
consult your installer or Vaillant Service
Solutions (0870 6060 777).
4.8.1 Ignition problems
2
1
Fig. 4.9 Troubleshooting
4 Operation

9Instructions for use ecoTEC plus / 0020020829_03
If the burner fails to ignite after five attempts, the device
does not start up and switches to “Fault”. This is indicated
by the fault code “F.28” or “F.29” in the display. The
display also shows the flame symbol with a cross
through it (1).
Automatic ignition can only take place after you manually
reset the fault.
• To reset the fault, press the reset button (2) and hold
it down for one second.
aCaution!
If the boiler still shuts off after three attempts
of resetting, please consult your installer or
Vaillant Service Solutions.
4.8.2 Flue problems
This appliance is fitted with a fan. If the fan does not
work properly, the appliance will switch itself off.
The display shows the symbols and and the fault
message “F.32”.
hNote!
If contacting Vaillant Service Solutions please
remember to quote the fault code, as this will
help to pinpoint the fault.
4.9 Turning off the boiler
1
Fig. 4.10 Switching off the appliance
• Turn the main on/off control (1) fully anti clockwise.
aCaution!
The boiler frost protection and monitoring
systems are only active when the electrical
supply to the boiler is on and it is not discon-
nected from the main power supply.
To ensure that these protection devices remain active,
switch your boiler on and off using the external controller.
hNote!
If the appliance is switched off for a long time
(for example when you are on holiday) you
should also turn off the gas supply and the
electrical supply.
4.10 Frost protection
The frost protection feature only protects the boiler.
Any other parts of the system liable to frost damage
should be protected accordingly.
aCaution!
The boiler frost protection and monitoring
systems are only active when the electrical
supply to the boiler is on and it is not discon-
nected from the main power supply.
Frost protection function
The boiler has a frost protection function.
If the heating flow temperature falls below 5 °C when
the electrical supply to the boiler is on, the appliance
starts up and heats the boiler to 30 °C.
aCaution!
Parts of the system may freeze. The frost
protection function cannot guarantee that
water flows through the entire heating system.
4.11 Maintenance and customer service
Inspection and maintenance
Permanent operational readiness, reliability and a long
service life require inspections and maintenance work
to be regularly carried out by a competent person or
Vaillant.
For further details please contact Vaillant Service
Solutions: (0870 6060777).
dDanger!
Risk of injury and damage due to improper
handling.
Never attempt to perform maintenance or
repairs on the appliance yourself.
Have a specialist heating company do the work.
We recommend signing a service agreement.
The reliability of the appliance can be impaired,
resulting in damage to property or personal
injury if maintenance work is not carried out.
Regular servicing ensures maximum efficiency and
economical operation of your boiler.
Operation 4

0020020829_03_GB 03 2008