Ecotec Plus; Introduction; Notes On The Documentation; Applicable Documents - Vaillant ecoTEC SERIES Instructions For Installation And Servicing

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
installation and maintenance manual.
We assume no liability for any damage caused by
non-observance of these manuals.
1.1.1

Applicable documents

• Always observe all installation instructions for struc-
tural parts and components of the system when
installing the ecoTEC plus 937. These installation
instructions are enclosed with the various system com-
ponents as well as additional components.
• Also observe all the operating instructions included
with the system components.

1.1.2 Retention of documents

Pass on this installation manual to the owner of the sys-
tem. The owner should retain the manuals so that they
are available when required.

1.1.3 Safety instructions and symbols

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!
Danger!
Risk of death from electric shock!
Danger!
Risk of burns or scalding!
Caution!
Potentially dangerous situation for the product
and environment!
Note
Useful information and instructions.
• Symbol for a necessary task
4
1.2

Validity of the manual

This installation manual applies exclusively to units with
the following part numbers:
- 0010004108 - 308525
- 308511 - 308526
- 308520 - 308527
- 308521 - 308528
- 308522 - 308531
- 308523 - 308534
- 308524 - 308536
The part number of the unit can be obtained from the
identification plate.
1.3 Introduction
Note
This boiler must be installed and serviced by a
competent person approved at the time by the
Health and Safety executive and in accordance
with the Gas Safety (Installation and Use)
Regulations 1998.
ecoTEC combination boiler
The ecoTEC combination boiler is a fully automatic, wall
mounted, room sealed condensing (high efficiency)
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 vessel and associated pipework.
Domestic hot water has priority over central heating.
The ecoTEC plus combination boiler consists of 3 models
with outputs of 23 kW, 31 kW and 37 kW for domestic hot
water and two pro versions with outputs of 24 kW and
28 kW for domestic hot water.
All versions are available in natural gas. The ecoTEC plus
831 is also available in LPG.
ecoTEC combination boilers incorporate a warm start
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 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 on ecoTEC plus
combination boilers can be filled using the built–in filling
loop contained within the boiler.
ecoTEC system boiler
The ecoTEC system boiler is a fully automatic, wall
mounted, room sealed condensing (high efficiency)
boiler for central heating and domestic hot water
(where a separate indirect hot water storage cylinder is
also incorporated in the system).
Instructions for installation and servicing ecoTEC 839592_12