Vaillant TURBOmax Plus 824/2 E User manual

INSTRUCTIONS FOR USE
TURBOmax Plus 824/2 E, 828/2 E
THERMOcompact 615/2 E, 620/2 E, 624/2 E, 628/2 E
The code of practice for the installation,
commissioning & servicing of central heating systems

2
TABLE OF CONTENTS
General information
Safety
For your information . . . . . . . . . . . . . . . . . . . . . . . . . .3
Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . .3
Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Specified use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
EC designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Factory Guarantee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Operation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Initial checks before turning ON . . . . . . . . . . . . . . . . . .9
Domestic hot water operation (TURBOmax Plus only) . . . .10
Heating operation . . . . . . . . . . . . . . . . . . . . . . . . . .13
Resetting the appliance . . . . . . . . . . . . . . . . . . . . . . .14
Turning the boiler OFF (TURBOmax Plus only) . . . . . . . .15
Turning the boiler OFF (THERMOcompact only) . . . . . . .16
Care and maintenance . . . . . . . . . . . . . . . . . . . . . . .17
Frost protection . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Status display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Important Note
☞This symbol is used to indicate
important instructions.
●This symbol is used to indicate
a required step.
3
GENERAL INFORMATION
We can accept no liability
whatsoever for damage or
injury resulting from failure to
observe these instructions.
Key to symbols
Liability
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.
TURBOmax Plus 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 auto-
matically adjusts to meet the demand
for both central heating and domestic
hot water in the most economical way.
THERMOcompact provides central
heating and domestic hot water
where a separate indirect hot water
cylinder is also incorparated to the
system.
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 logbook should be
completed by the installer and/or the
commissioning engineer and handed
to the user.
All CORGI registered installers
carry a CORGI ID card, and have a
registration number.
Both should be recorded in your
Benchmark Log Book. You can check
your installer by calling CORGI direct
on 01256 372300.

4
GENERAL INFORMATION
Specified use
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).
Vaillant TURBOmax Plus and
THERMOcompact boilers are made
to fulfil the latest technical specifica-
tions and official safety regulations.
These appliances are designed as
boilers for use in central heating and
hot water supply systems.
THERMOcompact boilers only supply
domestic hot water where a separate
indirect hot water cylinder is also
incorparated to the system.
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.

5
SAFETY
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.
- 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.
Follow the safety instructions!
Fig. S.1
Euro B/S 002/0_GB

6
SAFETY
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.
Safety instructions

7
Two year guarantee!
Fig. W.1
Euro B/S 122/0_GB
Your guarantee
Vaillant undertakes to rectify any
manufacturing defect that occurs
within twenty four 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 assess -
ment is needed under the terms of our
Guarantee. If you are unable to
contact your installer, phone Vaillant
Service Solutions:
0870 6060 777
FACTORY GUARANTEE

8
OPERATION
0
I
C
o
C
o
6
32 10
758 4
1
9
VRC-VC
Fig. B.1a: Operating elements TURBOmax Plus
Euro B/S 073/1
0
I
C
o
6
32 9
758 4
1
VRC-VC
THERMOcompact
A
Fig. B.1b: Operating elements THERMOcompact
Euro B/S_VC_086/1GB
Overview
TURBOmax Plus
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:
1Maximum radiator temperature
control (page 13)
2The „+“ and „-“ buttons for the
display panel
3Main ON/OFF control (pages 10
and 15)
4Built in control/timer module (if
fitted)
5The „i“ information button
6Boiler display
7Indicator lights to display the
current operating mode
8„Reset“ button: (see page 14)
9Maximum hot water temperature
control and warmstart ON/OFF
control (page 11)
10 Pressure gauge displaying the
pressure in the heating system
THERMOcompact
You can identify a THERMOcompact
boiler by the sticker which is situated
at the top left hand side of the control
panel (see A, Fig. 1b)
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:
1Maximum radiator temperature
control (page 13)
2The „+“ and „-“ buttons for the
display panel
3Main ON/OFF control (pages 10
and 16)
4Built in control/timer module (if
fitted)
5The „i“ information button
6Boiler display
7Indicator lights to display the
current operating mode
8„Reset“ button: (see page 14)
9Pressure gauge displaying the
pressure in the heating system

9
OPERATION
0
I
C
o
C
o
VRC-VC
1
2
3
4
Fig. B.2: LED displays
Euro B/S 074/1
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 (2and
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.
Note:
A bottom cover is fitted to the
appliance. The service valves can
be seen through the cover.
I
0
2 3 1 4
Fig. B.3: Opening service valves
Euro B/S 009/0GB
☞picture shows a TURBOmax
Plus boiler
Indicator lights/boiler display
TURBOmax Plus and THERMOcompact
boilers have an advanced multi-
function boiler display (1). When the
main ON/OFF control is in the „ON“
position the display will normally
show the temperature of water in the
boiler circuit (45 °C in the example),
which confirms that the boiler is
functioning correctly.
1In the unlikely event of a fault
developing which prevents the
boiler from operating, the display
may show a fault code (page 14).
2Red indicator
Illuminated = Boiler has locked out
3Yellow indicator
Illuminated = Main burner ignited
4 TURBOmax Plus
Green warmstart indicator (3)
Illuminated = Warmstart switched
ON
Not illuminated = Warmstart is
switched OFF and there is no
demand for hot water
Flashing = There is either a
demand for hot water or
warmstart
4 THERMOcompact
Green indicator (3) is illuminated
but has no function.

10
OPERATION
Check the water contents
●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.
VRC-VC
C
o
0
I
C
o
1
Fig. B.4: Checking the water level
Euro B/S 076/1
C
o
0
I
C
o
VRC-VC
C
o
C
o
2
3
Fig. B.5: Domestic hot water supply
Euro B/S 077/1
Domestic hot water
operation (TURBOmax
Plus only)
The boiler should only be used
when the heating system con-
tains water. Use of the boiler
without water may cause
damage to the boiler or its
components.
Setting the maximum domestic
hot water temperature control
●Turn the main switch (2) to the „l“
position.
●The display will show the boiler
flow temperature which indicates
electrical power to the boiler.
●The domestic hot water tempera-
ture can be adjusted using the hot
water temperature control (3).
● Turn the control clockwise to increa-
se the temperature and anti-clock-
wise to decrease the temperature.
As a guide for normal circumstances
set the knob to the one o´clock positi-
on.
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 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).