Page 1
For the user
Instructions for use
ecoMAX
Wall hung room sealed fan assisted condensing boilers
GB
Page 2
Table of contents
1 General information . . . . . . . . . . . . . . . . . . 3
1.1 For your information . . . . . . . . . . . . . . . . . . . . . 3
1.2 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.4 Specified use . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.5 EC designation . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Safety instructions . . . . . . . . . . . . . . . . . . . 4
2.1 Setup and adjustments . . . . . . . . . . . . . . . . . . . 4
2.2 Gas smell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Modifications in and around the boiler . . . . . . 4
2.4 Explosive and flammable materials . . . . . . . . . 4
2.5 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Factory guarantee . . . . . . . . . . . . . . . . . . . . 4
3.1 Vaillant warranty . . . . . . . . . . . . . . . . . . . . . . . . 4
3.2 Registering with us . . . . . . . . . . . . . . . . . . . . . . 4
3.3 Immediate help . . . . . . . . . . . . . . . . . . . . . . . . . 4
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.1.1 Operating controls . . . . . . . . . . . . . . . . . . . . . . . 5
4.1.2 Advanced multifunctional system display . . . . 5
4.2 Initial checks before turning ON . . . . . . . . . . . 5
4.2.1 Opening the service valves . . . . . . . . . . . . . . . . 5
4.2.2 Checking the water contents . . . . . . . . . . . . . . 6
4.3 Domestic hot water operation
(ecoMAX 646 and 665 only) . . . . . . . . . . . . . . . 6
4.3.1 Obtaining hot water . . . . . . . . . . . . . . . . . . . . . . 7
4.4 Heating operation . . . . . . . . . . . . . . . . . . . . . . . 7
4.4.1 Setting the maximum radiator temperature
control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.4.2 Setting the external controls . . . . . . . . . . . . . . 7
4.5 Status displays . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.6 Resetting the appliance . . . . . . . . . . . . . . . . . . . 8
4.7 Turning the boiler OFF . . . . . . . . . . . . . . . . . . . 8
4.7.1 To turn OFF the central heating only
(Summer mode) . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.7.2 To turn OFF the domestic hot water operation
(ecoMAX 646 and 665 only) . . . . . . . . . . . . . . . 9
4.7.3 Complete shutdown . . . . . . . . . . . . . . . . . . . . . . 9
4.8 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.9 Care and maintenance . . . . . . . . . . . . . . . . . . . 9
4.10 Frost-protection . . . . . . . . . . . . . . . . . . . . . . . . . 9
2
Instructions for use ecoMAX
Page 3
General information 1
1 General information
1.1 For your information
Thank you for choosing a Vaillant boiler. The information
given in this booklet will enable you to obtain the best
performance from your boiler.
ecoMAX 600 series provides central heating and
domestic hot water where a separate indirect hot water
cylinder is also incorporated to the system.
The benchmark gas boiler commissioning checklist (in
the installation manual) should be completed by the
installer and/or the commissioning engineer.
All CORGI Registered Installers carry a CORGI ID card,
and have a registration number. Both should be recorded
in the Benchmark gas boiler commissioning checklist.
You can check your installer by calling CORGI direct on
01256 372300.
If, after reading these instructions, you have any
questions on the operation of the boiler, please contact
either your installer or Vaillant Technical Department.
1.2 Key to symbols
Attention!
Important Note
Note!
This symbol is used to indicate important
instructions.
1.5 EC designation
The purpose of EC designation is to certify that the boiler complies with the requirements of the directives
covering gasfired 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).
Note!
Vaillant Ltd. support the Benchmark initiative.
In the installation manual you will find the
Benchmark gas boiler commissioning checklist.
It is very important that this is completed
correctly at the time of installation and commissioning.
• This symbol is used to indicate a required step.
1.3 Liability
Attention!
We can accept no liability whatsoever for damage or injury resulting from failure to observe
these instructions.
1.4 Specified use
Vaillant ecoMAX appliances are made to fulfil the latest
technical specifications and official safety regulations.
These appliances are designed as boilers for use in central heating and hot water supply systems.
If the appliances are used for purposes other than or in
excess of these specifications, this shall be classed as
incorrect operation, and neither the manufacturer nor
supplier will accept any liability for resulting damage or
injury.
Use of this type is entirely at the owner’s risk.
The term “specified use” also covers observance of the
operating and installation instructions, along with adherence to the servicing schedules.
Instructions for use ecoMAX
3
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2 Safety instructions
3 Factory guarantee
2 Safety instructions
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 satisfactory 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 Gas smell
If you smell gas or suspect a gas leak:
- Turn off the boiler
- Do not switch any electrical switches in the hazardous
area on or off
- Do not smoke in the hazardous area
- Turn off the gas supply at the gas meter
- Ventilate the room
- Consult your gas supplier, service agent or other com-
petent person.
2.3 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.
2.4 Explosive and flammable materials
Do not use or store any explosive or highly flammable
materials (e.g. gasoline, paper or paint) near to the appliance.
3 Factory guarantee
3.1 Vaillant warranty
Vaillant provide a full parts and labour warranty for this
appliance. The appliance must be installed by a suitably
competent person in accordance with the Gas Safety
(Installation and Use) Regulations 1998, and the manufacturer's instructions. In the UK 'CORGI' registered installers undertake the work in compliance with safe and
satisfactory standards.
All unvented domestic hot water cylinders must be installed by a competent person to the prevailing building
regulations at the time of installation. (G3) Terms and
conditions apply to the warranty, details of which can be
found on the warranty registration card included with
this appliance.
Failure to install and commission this appliance in compliance with the manufacturer's instructions may invalidate the warranty (this does not affect the customer's
statutory rights).
3.2 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.
Note!
No receipt will be issued.
3.3 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
2.5 Inspection
The boiler should be serviced annually. We recommend
that you sign a service agreement with your service
agent or Vaillant Ltd.
Attention!
The device may only be used
• for initial operation
• for testing
• for continuous operation
with the chamber cover closed and with the flue
system fully mounted and sealed.
4
Instructions for use ecoMAX
Page 5
Operation 4
4
1
3
4 Operation
4.1 Overview
4.1.1 Operating controls
For access to the controls press the upper middle of the
lower front panel and drop it down. The following can be
seen:
8 7 6 5 4
2
13
bar
0
1 2 3 9
Fig. B.1 Operating controls
1 Maximum radiator temperature control (page 7)
2 The “+” and “-” buttons for the display panel
3 Main ON/OFF control
4 Built in control/timer module (if fitted)
5 The “i” information button
6 Boiler display indicates current operating mode and additional
information
7 “Reset” button: (see page 8)
8 Maximum storage temperature control (page 6)
9 Pressure gauge displaying the pressure in the heating system
4.1.2 Advanced multifunctional system display
The boiler system display (Fig. B.2) shows – during normal operation – current information on the heating
system flow temperature (Fig. B.2. example gives flow
temperature of 45 °C).
In the event of a malfunction, this temperature display is
replaced by the relevant error code (see page 9).
The display also gives the following information:
1 Indication of the current heating system flow tem-
perature, or display of a status (see page 8)
or error code
Fan speed malfunction
Fan speed malfunction
Heating mode active
Hot water on
Illuminated: hot water demand
Flashing: storage charging on (burner on)
Warmstart is on
Illuminated: storage charging ready
Flashing: storage charging on (burner on)
Internal pump is running
Gas valve is activated
Flame crossed out:
Boiler is at lock out and will display fault code
Normal flame:
Correct burner operation
4.2 Initial checks before turning ON
4.2.1 Opening the service valves
1
2
13
bar
0
Fig. B.2 Advanced multifunctional system display
Instructions for use ecoMAX
Fig. B.3 Opening the service valves (635)
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4 Operation
3
2
3
1
Fig. B.3.1 Opening the service valves (646)
•
Check the water contents of the system on the pressure
gauge (1).
The needle on the pressure gauge should be within the
green band (between 1 and 1.5 bar). If the needle displays a value below 0.8 bar when the appliance is cold,
follow the instructions left by your installer to refill the
system.
Alternatively, your installer should be called to refill the
system.
4
4.3 Domestic hot water operation
(ecoMAX 646 and 665 only)
1
4
3
Fig. B.3.2 Opening the service valves (665)
• Ensure that the service valves in the heating flow and
return (4 and 3) and the gas service valve (1) are open.
The flow, return and gas service valves are open when
the line marking has the same direction as the pipe.
Attention!
The pressure relief valve is provided for safety
reasons and must not be interfered with.
4.2.2 Checking the water contents
1
2
13
bar
0
Fig. Domestic hot water operation
ecoMAX 646 and 665 provides central heating and
domestic hot water where a separate indirect hot water
cylinder is also incorporated to the system.
Attention!
The boiler should only be used when the heating
system contains water. Use of the boiler without
water may cause damage to the boiler or its
components.
• Turn the main switch (2) to the “l” position.
• Set the maximum hot water temperature control to the
desired setting using the control knob (3). It means
- all the way to the very left = frost protection 15 °C
- all the way to the very right = max.70 °C
When the domestic hot water temperature is adjusted,
the boiler display will show the corresponding water
temperature. This information appears on the display for
about 5 seconds and then the display returns to its normal state (current heating flow temperature e.g. 45 °C).
Fig. B.4 Checking the water contents
6
2
13
bar
0
Note!
Domestic hot water operation with ecoMAX 635:
When the installation is equipped with an external hot water cylinder, your installer should have
instructed you how to set the temperature and
how to switch ON and OFF.
Instructions for use ecoMAX6
Page 7
Operation 4
3
4
4.3.1 Obtaining hot water
On opening a hot water tap (1) at a supply point (basin,
shower, bath, etc.) the incorporated hot water cylinder
delivers hot water. When the temperature inside the hot
water cylinder falls below the set value, the boiler will
start to re-heat the external hot water cylinder. When
the set temperature will be reached, the boiler will stop
whilst the pump and fan will continue to operate for a
short period.
1
Fig. B.6 Obtaining hot water
When the temperature is adjusted, the boiler display will
show the corresponding water temperature. This information appears on the display for about 5 seconds and
then the display returns to its normal state (current heating flow temperature e.g. 45 °C).
4.4.2 Setting the external controls
Fig. B.9 Setting the external controls
4.4 Heating operation
2
1
Fig. B.8 Setting the maximum radiator temperature control
The boiler should only be used when the heating system
contains water. Use of the boiler without water may
cause damage to the boiler or its components.
4.4.1 Setting the maximum radiator temperature
control
• Turn the main switch (1) to the “l” position.
• Set the maximum radiator temperature control to the
desired setting using the control knob (2).
We recommend the following settings:
- Left setting during spring and autumn,
- Middle setting during mild winter,
- Right setting during cold winter.
• Set the room thermostat and/or the thermostatic
radiator valves according to the instructions supplied
with the control(s).
Note!
Vaillant offer room thermostat/time control
accessories which give accurate and economic
room temperature control as well as improved
comfort.
Ask your installer!
The boiler will now operate automatically to provide central heating for the conditions selected on the external
controls.
Whilst the boiler is operating, the boiler display indicates
the temperature of the water within the boiler circuit.
After the boiler stops operating the pump and fan will
continue to operate for a short period to fully disperse
the heat from the boiler.
Note!
The boiler incorporates an anti-cycling economiser 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 therefore be a short delay before the boiler
operates.
Instructions for use ecoMAX 7
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4 Operation
STOP
1
max. 3 x !
4.5 Status displays (for maintenance and servicing
work carried out by a qualified service engineer)
• The status displays are activated by pressing the "i" (1)
button.
2
1
Fig. B.10 Status displays
The display (2) now shows the corresponding status code,
e.g. "S.4" for burner operation. Please refer to table B.1
(below) for details of the most important status codes.
• Press the "i" button again to return to normal mode.
During changeover phases, such as when the system
restarts after the flame has been extinguished, the "S"
status message is displayed briefly.
Display Meaning
S. 0* No heat requirement
S. 1* Pump running
S. 3* Heating system ignition
S. 4* Burner ignited
S. 5* Fan and pump overrun
S. 6* Heating fan run-out
S. 7* Pump over run
S. 8* Anti cycling mode (after heating operation)
S. 14** Burner ignited
S. 20** Hot water cycle mode
S. 31* Summer mode
S. 34* Frost protection mode
Table B.1: Status displays (a complete list of status codes can be
found in the installation and maintenance instructions)
within 5 attempts, then the boiler does not go into operation and switches to “Lock out”.
This is indicated by a fault code “F.28” or “F.29” on the
display.
A new attempt to ignite the flame can then only be performed after pressing the “Reset” button.
• Press the “Reset” button (1) and hold for approx. 1 second.
Fig. B.11 Resetting the appliance
Attention!
If the boiler still shuts off after a third attempt,
then please consult your installer or Vaillant
Service Solutions.
The boiler also switches to “Fault” when there is not
enough water in the system. This fault is indicated by
fault code “F.22” “F.23” or “F.24”.
The boiler can only be placed back in operation after the
heating system has been properly refilled with water.
In the unlikely event of any other fault developing, which
prevents the boiler from operating, the display will also
show other fault codes. If a fault code is displayed please
contact your installer or Vaillant Service Solutions.
Note!
If contacting Vaillant Service Solutions please
remember to quote the fault code, as this will
help to pinpoint the fault.
4.7 Turning the boiler OFF
4.7.1 To turn OFF the central heating only
(Summer mode)
• Turn the maximum radiator temperature control knob
used to control the heating supply temperature (1) all
the way to the left.
* Heating mode ** Hot-water mode
4.6 Resetting the appliance
When a hot water tap or the central heating system
requires heat, the boiler automatically ignites and starts
to operate. If the automatic ignition is not successful
8
Note!
You can switch off the heating operation in summer, for example, but the boiler will continue to
provide domestic hot water whenever a hot
water tap is opened.
Instructions for use ecoMAX
Page 9
Operation 4
2
4.8 Troubleshooting
o
o
C
C
In the unlikely event that a problem occurs with the operation of the ecoMAX boiler, the following points should
be checked:
1
Fig. B.12 To turn OFF the central heating only (Summer mode)
4.7.2 To turn OFF the domestic hot water operation
(ecoMAX 646 and 665 only)
ecoMAX 646 and 665 in combination with separate indirect hot water cylinder provides the possibility to turn
OFF the domestic hot water operation whilst the heating
operation still remains in function.
• Turn the water temperature control knob all the way
to the very left — only the frost protection of the hot
water cylinder remains in function.
4.7.3 Complete shutdown
Boiler fails to operate:
• Is the gas supply turned on? (see page 5)
• Is the water supply turned on? (see page 5)
• Is there enough water in the heating system?
(see page 5)
• Is the electrical supply switched ON?
• Is the main ON/OFF control in the “ON” position?
(switch position “I”)
• Is the burner lock out indicator light illuminated?
(see page 8)
Attention!
If your boiler still does not operate then please
consult your installer or Vaillant Service
Solutions (0870 6060 777).
4.9 Care and maintenance
Clean the outer casing of your boiler with a damp cloth
and a little soap. Do not use abrasive or solvent cleaning
agents that may damage the case or the plastic fittings.
The appliance should be serviced at least once per year.
To ensure regular servicing, it is strongly recommended
that arrangements are made with your service agent or
Vaillant Ltd. For further details please contact Vaillant
Service Solutions: (0870 6060 777).
Fig. B.13 Complete shutdown
If you want to turn the ecoMAX boiler OFF for a longer
period of time (e.g. holidays), and there is no danger of
frost, then you should also turn off the gas supply, the
cold water service valve (see page 5) and the electrical
supply. Please note the frost protection hints detailed in
these instructions.
• Turn the main ON/OFF control (2) to the “0” position.
Note!
Do not turn the ecoMAX boiler OFF if a hot
water cylinder is also incorporated in the system
unless there is no demand for domestic hot
water.
4.10 Frost protection
Your boiler is equipped with a frost protection function:
If the heating water temperature drops below 5 °C when
the main switch is ON, then the boiler goes into operation and heats the boiler circuit to approx. 30 °C.
Note!
It cannot be guaranteed that water will circulate
throughout the entire heating system.
If the boiler is not operated for several hours during
very cold weather there is therefore 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 freezing point.
It must be remembered, however, that the boiler will be
automatically 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.
Note!
Frost protection and monitoring devices can
only function when the main switch of the unit
is set to the “I” position and the boiler is
connected to the electrical supply.
Instructions for use ecoMAX
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0020014608_00GB 03 2006 Subject to alteration
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