![Vaillant ecoMAX 646 Installation And Maintenance Manual Download Page 22](http://html1.mh-extra.com/html/vaillant/ecomax-646/ecomax-646_installation-and-maintenance-manual_3467402022.webp)
Installation and maintenance manual ecoMAX 646
22
Recharging
• Switch on the appliance and the connected hot water
cylinder.
• Make sure that the cylinder thermostat is requesting
heat.
• Press the “i” key.
When the cylinder is correctly charged, the status code
“S.24” appears in the display.
Fig. 5.6 Display during recharging
Heating
• Switch on the appliance.
• Make sure that heat is being requested.
• Press the “i” key.
When the heating is running correctly, the status code
“S.4” appears in the display.
Fig. 5.7 Display during heating mode
5.4 Instructing
the
user
The user of the heating system must be instructed about
its functions and how to operate it. The following meas-
ures in particular are to be carried out here:
• Hand over any instructions intended for the user as
well as the appliance documentation.
• Inform the user that the instruction manuals should be
kept near the appliance.
Note!
When you have finished the installation, attach
the sticker supplied (835593) to the appliance
in the user’s language.
Caution!
The appliance may only be used
• for initial operation
• for testing
• for continuous operation
with the chamber cover closed and with the flue
system fully mounted and sealed.
5.4.1
Instructing the user about the heating system
• Instruct the user about the methods used for combus-
tion air supply and flue conducting. Be especially sure
to point out that these must not be altered.
• Instruct the user on how to check the required water
level/filling pressure of the system as well as on meth-
ods of refilling and bleeding the heating system when
needed.
• Point out to the user the correct (economical) settings
for temperatures, controllers and thermostat valves.
• Instruct the user on the need for yearly inspection and
maintenance of the system. Recommend making a
maintenance contract.
5.4.2 Vaillant
warranty
Vaillant provide a full parts and labour warranty for this
appliance. The appliance must be installed by a suitably
competent person in accordance with the Gas Safety (In-
stallation and Use) Regulations 1998, and the manufac-
turer’s instructions. In the UK ‘CORGI’ registered in-stall-
ers undertake the work in compliance with safe and sat-
isfactory standards.
All unvented domestic hot water cylinders must be in-
stalled by a competent person to the prevailing building
regulations at the time of installation. (G3) Terms and
conditions apply to the warranty, details of which can be
found on the warranty registration card included with
this appliance.
Failure to install and commission this appliance in com-
pliance with the manufacturer’s instructions may invali-
date the warranty (this does not affect the customer’s
statutory rights).
5 Start-up