Instructions for use
turboMAX pro
24 E
28/2 E
GB
Instructions for use turboMAX pro2
Table of contents
General information . . . . . . . . . . . . . . . . . . . . . . . 1
For your information . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Specified use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
EC designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Factory Guarantee . . . . . . . . . . . . . . . . . . . . . . . . 3
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Initial checks before turning ON . . . . . . . . . . . . . . . . . 4
Domestic hot water operation . . . . . . . . . . . . . . . . . . . 4
Heating operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Resetting the appliance . . . . . . . . . . . . . . . . . . . . . . . . 6
Turning the boiler OFF . . . . . . . . . . . . . . . . . . . . . . . . . 6
Care and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 7
Frost protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
For your information
Thank you for choosing the Vaillant turboMAX pro boiler.
The information given in this booklet will enable you to
obtain the best performance from your boiler. TurboMAX
pro provides both central heating and domestic hot
water, with the domestic hot water supplied directly
from the boiler. The boiler will operate automatically to
provide domestic hot water whenever a hot water tap is
opened, and automatically adjusts to meet the demand
for both central heating and domestic hot water in the
most economical way. If, after reading these instructions,
you have any questions on the operation of the boiler,
please contact either your installer or Vaillant Technical
Department.
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.
Key to symbols
Important Note
This symbol is used to indicate important
instructions.
• This symbol is used to indicate a required step.
Liability
We can accept no liability whatsoever for damage or injury resulting from failure to observe
these instructions.
Specified use
Vaillant turboMAX pro 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.
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).
Safety instructions
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.
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
Table of contents; General information
Instructions for use turboMAX pro 3
Safety; Factory guarantee; Operation
- 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
competent person.
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.
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.
Inspection
The boiler should be serviced annually. We recommend
that you sign a service agreement with your service
agent or Vaillant Ltd.
Factory guarantee
Your guarantee
Vaillant undertakes to rectify any manufacturing defect
that occurs within twelve months of the installation
date.
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.
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.
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.
Operation
Overview
Fig. B.1: Operating elements
Operating controls
1 Maximum radiator temperature control
2 „Reset“ button
3 Indicator lights to display the current operating mode
4 Main ON/OFF control
5 Pressure gauge displaying the pressure in the heating
system
6 Built in control/timer module (if fitted)
7 Maximum hot water temperature control
Indicator lights
Fig. B.2: LED displays
The lights indicate the following operating states under
normal conditions:
1 On: The main ON/OFF switch is set to the ON position
2 On: A hot water tap is opened and there is a demand
for hot water
3 On: There is a demand for central heating
4 On: Fan and flue system are functioning correctly
5 On: Gas valve opened, the boiler is trying to ignite
Flashing: Lack of water in the system
6 On: Burner has lit to provide either central heating or
hot water
7 On: Boiler has tried and failed to light
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Operation
Instructions for use turboMAX pro4
Initial checks before turning ON
Open the service valves
• Ensure the cold water service valve is open. This can
be checked by opening a hot water tap and ensuring
water flows.
• Ensure that the service valves in the heating flow and
return (2 and 1) and the gas service valve (3) are open.
The flow, return and gas
service valves are open when the line marking
has the same direction as the pipe.
• The pressure relief valve (4) is provided for safety
reasons and must not be interfered with.
Fig. B.3: Opening service valves
Check the water contents
Fig. B.4: Checking the water level
• Check the water contents of the system on the
pressure gauge (4).
• 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.
Domestic hot water operation
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.
Fig. B.5: Domestic hot water supply
Setting the maximum domestic hot water temperature control
• Turn the main switch (1) to the „l“ position.
• The domestic hot water
temperature can be adjusted using the hot water
temperature control (2).
• Turn the control clockwise to increase the temperature
and anti-clockwise to decrease the
temperature.
As a guide for normal circumstances set the knob to the
1 o´clock position.
Note:
This control adjusts the maximum domestic hot water
temperature. If adjusting the control upwards appears
to have no effect on the temperature, then the boiler
is already operating at full output for the selected flow
rate. If hotter water is required the flow rate should be
reduced by partially closing the hot water tap.
If you live in a hard water area please do not set
the control knob above the mid (12 o´clock)
position to prevent excessiv scale formation
(fig. B.5).
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Operation
Instructions for use turboMAX pro 5
Obtaining hot water
On opening a hot water tap (3) at a supply point (basin,
shower, bath, etc.) the boiler will automatically operate
to deliver hot water.
On closing the tap the boiler switches OFF (or continues
to operate for central heating if required). The pump and
fan will continue to operate for a short period.
Fig. B.6: Drawing off hot water
Heating operation
Setting the maximum radiator temperature control
Fig. B.7: Setting the flow temperature
• 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.
Setting the external controls
• Set the room thermostat (3) and/or the thermostatic
radiator valves (4) according to the instructions
supplied with the control(s).
Hint!
Vaillant offer room thermostat/time control
accessories which give accurate and economic
room temperature control as well as improved
comfort. Ask your installer!
Fig. B.8: Setting the external controller
The boiler will now operate automatically to provide
central heating for the conditions selected on the
external controls (turboMAX pro will also provide domestic hot water on demand). 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 anticycling
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.
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Operation
Instructions for use turboMAX pro6
Resetting the appliance
Fig. B.9: Reset
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
within 10 seconds, then the boiler does not go into
operation and switches to „Lock out“.This is indicated
visually by the red indicator light (1). A new attempt to
ignite the flame can then only be performed after
pressing the „Reset“ button.
• Press the „Reset“ button (2) and hold for approx. 1
second.
If the device still shuts off after a third attempt,
then please consult your installer or Vaillant
Service Solutions.
Turning the boiler OFF
Fig. B.10: Setting the summer operating mode
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.
Hint!
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.
To turn OFF central heating and hot water for short
periods of time
Fig. B.11: Shutting down the unit completely
• Turn the main ON/OFF control (2) to the „0“ position.
If you want to turn the 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 and
the electrical supply. Please note the frost protection hints in this regard (next page).
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7Instructions for use turboMAX pro 7
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 6060777.
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.
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.
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.
Troubleshooting
In the unlikely event that a problem occurs with the
operation of the turboMAX pro combination boiler, the
following points should be checked:
1. Boiler fails to operate
• Is the gas supply turned on? (see page 4)
• Is the water supply turned on? (see page 4)
• Is there enough water in the heating system?
• 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 6)
2. Hot water operates but no central heating
• Is the heating turned ON? (see page 6).
• Are all external heating controls ON?
If your boiler still does not operate then please consult
your installer or Vaillant Service Solutions:
0870 6060 777.
83 36 89_22 GB_R1 03 2005 Subject to alteration
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