Your System Has Been Preset; Energy Saving Tips - Viessmann VITOLIGNO 250-S Operating Instructions Manual

Commissioning
Commissioning and matching up of the control unit to
local conditions and the structural characteristics of the
building must be carried out by your heating contractor.
Installation and service instructions

Your system has been preset

Your boiler's control unit is set at the factory.
■ The heating circuits are set to the operating program
"Heating".
The domestic hot water heating is set to the operat-
■
ing program "DHW".
Your heating system is therefore ready for use:
Central heating
■ Your rooms are heated from 06:00 to 22:00 h, to a
"Set room temp" of 22 °C (standard heating mode).
From 22:00 to 06:00 h, your rooms are heated to the
■
"Set red room temp" (room temperature for
reduced heating mode, night setback).
■ Your heating contractor can make further settings for
you during commissioning.
You can change any settings at any time to suit your
individual requirements (see from page 20).

Energy saving tips

Use the adjustment options offered by your boiler con-
trol unit:
■ For central heating, select the operating program
that meets your current requirements:
For short periods of absence (a few hours, such as
–
for shopping trips), select "Economy mode" (see
page 26).
The room temperature is reduced for as long as
economy mode is activated.
– If you are going away, select the "Holiday pro-
gram" (see page 26).
The operating program for central heating is auto-
matically set to "Standby mode" while the holiday
program is active.
– If you do not want to heat the rooms and you do
not require DHW for an extended period, select the
"Standby mode" operating program for the rele-
vant heating circuits and for DHW.
– See page 24 for the relevant heating circuits
– See page 29 for DHW heating
■ Never set the DHW cylinder temperature excessively
high (see page 28).
You can further save energy by taking the following
steps:
As the user, you may be obliged to notify your local
flue gas inspector of the installation of new combustion
equipment [check local regulations]. Your local flue gas
inspector (where applicable) will also provide you with
information on additional tasks concerning your com-
bustion equipment (e.g. regular testing, cleaning, etc.).
DHW heating
■ The DHW is heated to 60 °C "Set DHW tempera-
ture" every day from 00:00 to 24:00 h.
Your heating contractor can make further settings for
■
you during commissioning.
You can change any settings at any time to suit your
individual requirements (see from page 28).
Wintertime/summertime changeover
This changeover is automatic.
■
Time and date
■ The day and time were set by your heating contrac-
tor during commissioning.
Power failure
■ All data is retained if there is a power failure.
Introductory information
9