General Information; Commissioning; Terminology; Your System Is Preset At The Factory - Viessmann vitocrossal 300 Operating Instructions Manual

Vitocrossal 300 CU3A 26 to 57 Operating

Commissioning

Terminology

Your System is Preset at the Factory

Your heating system is preset factory preset to 'Heating
and DHW' and is therefore ready for use.

Central heating

Constant 24 h, the rooms are heated
to 68°F (20°C) "Room temp setpoint" (standard
heating mode).
Reduced room temperature, the rooms are heated to
64°F (18°C) "Red. room temp setpoint" (reduced
room temperature, frost protection when used with
time program).
Your heating contractor can make further settings
for you during commissioning. You can change any
settings individually at any time to suit your
requirements (see "Central heating").

Time and date

The day and time were set by your heating contractor
during commissioning.

Power failure

All settings are saved if there is a power failure.
If the heating system has been powered off for a
prolonged period, reset the date and time (refer to
page 28).
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.
To provide you with a better understanding of the
functions of your Vitotronic control unit some terminology
is explained.
The terms are marked as follows:
Further information can be found in the "Terminology"
section.
DHW heating
Constant 24 h, the DHW tank is heated
to 122°F (50°C) "Set DHW temperature".
Any installed DHW recirculation pump is on.
Set time program for night setback.

Frost protection

Your boiler and DHW tank are protected against
frost.

Wintertime/summertime changeover

This changeover is automatic.

General Information

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