4
Installation and maintenance manual ecoTEC
1 Introduction
1 Introduction
1.1
Notes on the documentation
The following information is intended to help you
throughout the entire documentation.
Further documents apply in combination with this instal-
lation and maintenance manual.
We assume no liability for any damage caused by
non-observance of these manuals.
1.1.1 Applicable
documents
The following additional documents are provided with
the appliance:
For the owner of the system:
Brief operating instructions
(only ecoTEC plus)
no. 838404
Benchmark logbook
no. 800371
Warranty card with return envelope
no. 802922
For the qualified technician:
Installation and maintenance manual
no. 839592
Assembly manual for flue accessories no.
835296
The manuals for any accessories and controllers used
also apply.
1.1.2 Preservation of documents
Please pass on this installation manual to the owner of
the system. The owner shall preserve the manuals so
that they are available when required.
1.1.3 Safety instructions and symbols
Please observe the safety instructions in this manual for
the installation of the appliance!
Symbols used in the manual are explained below:
Danger!
Immediate danger to life and limb!
Caution!
Potentially dangerous situation for the product
and environment!
Note
Useful information and instructions.
• Symbol for a necessary task
- List for function descriptions or general list
1.2 Introduction
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 under-
take the work in compliance with safe and sat-
isfactory standard.
ecoTEC 800 range
The ecoTEC 800 range is a fully automatic, wall mount-
ed, room sealed condensing (high efficiency) combina-
tion 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 ecoTEC 800 range consists of models with outputs
of 23 kW, 28 kW and 31 kW for domestic hot water. All
versions are available in natural gas. The 31 kW version
version is also available in LPG.
ecoTEC combination boilers incorporate a warm start
facility that keeps the domestic hot water heat exchang-
er 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 areas that get
exceptionally hard water, a scale reducer may be fitted
to prevent scale formation in the hot water system
pipes. The heating system can be filled using the built–in
filling loop contained within the boiler.
ecoTEC 600 range
The ecoTEC 600 range is a fully automatic, wall mount-
ed, room sealed condensing (high efficiency) system
boiler for central heating and domestic hot water (where
a separate indirect hot water storage cylinder is also
incorporated in the system). The ecoTEC 600 range con-
sists of models with outputs of 12, 15, 18, 24 and 30 kW.
All ecoTEC 600 range boilers are available in Natural
Gas. The 18 kW and the 30 kW version are also available
in LPG.
1.3 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 (ecoTEC 800). The boilers are
easily mounted on any internal wall and can be installed
with either a horizontal or vertical RSF (room sealed fan
assisted) flue.
The boilers use a standard flue system (100 mm or
125 mm outside diameter). Flue extensions and addition-
al bends and elbows are available for the flue system to
increase the flexibility. 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 indi-
cates the operational status of the boiler. This feature
provides key information to aid commissioning and fault
finding. The data badge is fitted to the underside of the
boiler. See text of General Requirements for installation
requirements or notes.
The Valliant ecoTEC are state-of-the-art appliances
which have been constructed in accordance with recog-
nised safety regulations. Nevertheless, danger to the life
and limb of the user or third parties can still occur or
