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1 General information . . . . . . . . . . . . . . . . . . 2
1.1 For your information . . . . . . . . . . . . . . . . . . . . . 2
1.2 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.4 Specified use . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.5 EC designation . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Safety instructions . . . . . . . . . . . . . . . . . . . 3
2.1 Setup and adjustments . . . . . . . . . . . . . . . . . . . 3
2.2 Gas smell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.3 Modifications in and around the boiler . . . . . . 3
2.4 Explosive and flammable materials . . . . . . . . . 3
2.5 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 Factory guarantee . . . . . . . . . . . . . . . . . . . . 4
3.1 Your guarantee . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.2 Registering with us . . . . . . . . . . . . . . . . . . . . . . 4
3.3 Immediate help . . . . . . . . . . . . . . . . . . . . . . . . . 4
4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4.1.1 Operating controls . . . . . . . . . . . . . . . . . . . . . . . 4
4.1.2 Advanced multifunctional system display . . . . 5
4.2 Initial checks before turning ON . . . . . . . . . . . 5
4.2.1 Opening the service valves . . . . . . . . . . . . . . . . 5
4.2.2 Checking the water contents . . . . . . . . . . . . . . 5
4.3 Domestic hot water operation . . . . . . . . . . . . . 6
4.3.1 Setting the maximum domestic hot water
temperature control (ecoMAX 800 series only) 6
4.3.2 Warmstart operation
(ecoMAX 800 series only) . . . . . . . . . . . . . . . . . 6
4.3.3 Obtaining hot water (ecoMAX 800 series only) 7
4.4 Heating operation . . . . . . . . . . . . . . . . . . . . . . . 7
4.4.1 Setting the maximum radiator temperature
control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.4.2 Setting the external controls . . . . . . . . . . . . . . 8
4.5 Status displays . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.6 Resetting the appliance . . . . . . . . . . . . . . . . . . . 9
4.7 Turning the boiler OFF . . . . . . . . . . . . . . . . . . . 10
4.7.1 To turn OFF the central heating only
(Summer mode) . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.7.2 To turn OFF central heating and hot water
for short periods of time . . . . . . . . . . . . . . . . . . 10
4.8 Turning the boiler OFF
(ecoMAX 600 series only) . . . . . . . . . . . . . . . . . 10
4.8.1 To turn OFF the central heating . . . . . . . . . . . . 10
4.8.2 To turn boiler OFF for short periods of time . 10
4.9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.10 Care and maintenance . . . . . . . . . . . . . . . . . . . 11
4.11 Frost-protection . . . . . . . . . . . . . . . . . . . . . . . . . 11
1 General information
1.1 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.
ecoMAX 800 series 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.
ecoMAX 600 series provides central heating and
domestic hot water where a separate indirect hot water
cylinder is also incorporated to the system.
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.
If, after reading these instructions, you have any
questions on the operation of the boiler, please contact
either your installer or Vaillant Technical Department.
1.2 Key to symbols
Attention!
Important Note
Note!
This symbol is used to indicate important
instructions.
• This symbol is used to indicate a required step.
1.3 Liability
Attention!
We can accept no liability whatsoever for dama-
ge or injury resulting from failure to observe
these instructions.
Table of contents
1 General information
Instructions for use ecoMAX
