Viessmann VITOCROSSAL CI, Operating Instructions Manual

Page: 8 / 48

8
The commissioning and matching of the control unit to
local conditions and building characteristics, as well as
instructing the user in the operation of the system,
must be carried out by your heating contractor. As the user of new combustion equipment, you may be
obliged to notify your local flue gas inspector of the
installation [check local regulations]. Your local flue gas
inspector will also inform you [where appropriate]
about work he may be required to carry out on your
combustion equipment (e.g. regular checks, cleaning).
Terminology
To provide you with a better understanding of the func-
tions of your Vitotronic control unit, some terminology
is explained.
The terms are marked as follows:
Further information can be found in chapter
"Terminology" in the appendix.
Your system is preset
Your heating system is preset at the factory and is
therefore ready for operation:
Central heating
■ Between 06:00 and 22:00 h , the rooms are heated
to 20 °C "Set room temperature" (standard room
temperature).
■ Between 22:00 and 06:00 h , the rooms are heated
to 3 °C "Set reduced room temp" (reduced room
temperature, frost protection).
DHW heating
■ Between 05:30 and 22:00 h , the DHW is heated to
50 °C "Set DHW temperature" . Any installed DHW
circulation pump is switched on.
■ Between 22:00 and 05:30 h , the DHW cylinder is not
reheated. Any installed DHW circulation pump is
switched off.
Note
Any DHW heating begun before 22:00 h is termina-
ted.
Frost protection
■ Your boiler and DHW cylinder are protected against
frost.
Wintertime/summertime changeover
■ This changeover is automatic.
Date and time
■ The date and time have been set by your heating
contractor.
Your heating contractor can make further settings for
you during commissioning.
You can change the settings at any time to suit your
individual requirements.
Power failure
All settings are saved if there is a power failure.
If the heating system has been shut down for a pro-
longed period, reset the date and time.
Tips on saving energy
Central heating
■ Standard room temperature ( "Room temp set-
point" , see page 19):
Do not overheat your home. Every degree of room
temperature reduction saves up to 6 % on your heat-
ing bills.
Never set your standard room temperature higher
than 20 °C.
■ Time program (see page 19):
Heat your home to the standard room temperature
during the day and the reduced temperature at night.
Set this via the time program.
■ Operating program :
If you do not require central heating, select one of
the following operating programs:
– "Only DHW" (see page 24):
If you require no heating for your home in summer,
but you require DHW.
– "Standby mode" (see page 17):
If you don't need to heat your home and don't
require DHW for long periods.
■ Short absence (see page 21):
Reduce the room temperature if you are going out
shopping, for example. For this, select
"Economy
mode" .
Introductory information
Commissioning
5814953