6
INTRODUCTION
THERMOcompact boiler
The THERMOcompact is a fully
automatic, wall mounted, room sealed
system boiler for central heating and
domestic hot water (where a separate
indirect hot water storage cylinder is
also incorporated in the system).
The THERMOcompact range consists
of models with outputs of 15, 20,
24 kW and 28 kW.
All THERMOcompact boilers are
available in Natural Gas. The 20 and
28 kW versions are also available in
LPG.
General Notes
The boilers have been designed for
use with a sealed central heating
system, and come fully tested and
assembled with a built in circulating
pump, expansion vessel and diverter
valve (TURBOmax Plus only). The boi-
lers are not suitable for use on open
vented systems.
The boilers are easily sited on any
internal wall and can be installed
with either a horizontal or vertical
RSF (room sealed fan assisted) flue.
Two types of flue systems are
available, the standard concentric flue
system (100 mm outside diameter)
and a larger diameter concentric flue
system (125 mm outside diameter)
which allows longer flue lengths to be
achieved. Flue extensions and
additional bends and elbows are
available for both flue systems to
increase the siting flexibility.
There is also a 100 mm diameter
concentric flue accessory which
connects to the alternative rear flue
outlet on the boiler for direct through
the wall installations. The boilers are
not suitable for external installation.
If desired, an inhibitor may be used
in the system. Guidance on the use of
inhibitors is contained in these
instructions.
All boilers have a built in diagnostic
system which indicates the
This feature provides key information
to aid commissioning and fault
finding.
The data badge is fitted on the rear
of the control panel.
See text of General Requirements for
installation requirements or notes.
Vaillant Ltd. support the Benchmark
initiative.
Within the information pack, you will
find a Benchmark Log Book. It is
very important that this is completed
correctly at the time of installation,
commissioning and handover to the
user.
Note:
This boiler must be installed
and serviced by a competent person
in accordance with the Gas Safety
(Installation and Use) Regulations
1998. In the UK „CORGI“
registered installers undertake the
work to a safe and satisfactory
standard.
General Information
TURBOmax Plus boiler
EC designation
TURBOmax Plus (824/828) and
THERMOcompact boilers
(615/620/624/628) carry the "CE"
Mark. This demonstrates that the boi-
lers fulfil the essential requirements of
the Gas Appliance Directive
(90/396/EEC) and the Gas
Appliance (Safety) Regulations 1992.
The "CE" Mark also demonstrates that
the boilers comply with the
requirements of the Electromagnetic
Compatibility Directive
(89/336/EEC), the Low Voltage
Directive (72/23/EEC), the Boiler
Efficiency Directive (92/42/EEC) and
the Boiler (Efficiency) Regulations
1993.
The TURBOmax Plus is a fully
automatic, wall mounted, room sealed
combination boiler for central heating
and domestic hot water. Domestic hot
water is supplied directly from the
boiler, without requiring a copper
cylinder, cold water tank, feed and
expansion tank and associated
pipework. Domestic hot water has
priority over central heating.
The TURBOmax Plus range consists of
models with outputs for domestic hot
water of 24 kW and 28 kW. Both
versions are available in natural gas
and LPG.
TURBOmax Plus combination boilers
incorporate a warmstart facility that
keeps the domestic hot water heat
exchanger hot, providing an
instantaneous delivery of domestic hot
water.
The temperature in the domestic hot
water heat exchanger is limited by
the boiler control system and it is not
necessary to install a scale reducer on
the cold mains to the boiler.
However, in exceptionally hard water
areas to prevent scale formation in
the property hot water system
pipework, a scale reducer may be
fitted.
The heating system can be filled using
the built-in filling loop contained
within the boiler.
