Type Of Building; Summer/Wintertime Changeover - Bosch CFB 840 Servicing Instructions

18 | General specification data
8.2

Type of building

In submenu Type of building the heat storage capacity of the building is
entered. Different types of construction have different heat storage
capacities. This function sets the heating system to the specified
construction type.
The heat storage capacity is divided into three categories.
Class Explanation
light heat storage capacity
e.g. prefabricated building, wood-frame
construction
medium medium heat storage capability,
e.g. house built with breeze blocks
heavy heat storage capacity
e.g. brick house
Table 13 Heat storage capacity
B Call up the service level.
GENERAL PARAM. appears as the first main menu.
B Press Display to call up a submenu.
B Turn the rotary dial until submenu Type of building is displayed.
B Hold down button Display and turn the rotary dial until the required
value is shown.
The display shows the set value.
B Release Display to save your input.
B Press Back to return to the next higher level.
Input range
Type of building medium
heavy
light
Table 14 Setting range Building type
8.3

Summer/wintertime changeover

Three different date and time setting options are available for all
connected control units:
Setting
options Explanation
Radio clock The adjustment is made completely automatically by
the radio time signal.
Automatic Date and time input with keypad. The change from
summer to winter time and vice versa is made
automatically on the last weekend in March and
October.
Manual Single date and time input via keypad. There will be no
automatic summer/wintertime adjustment.
Table 15 Setting options Date and time
The Programmer contains a radio receiver, which
constantly monitors and corrects the time switch inside
the control unit. You never need to set the time during
commissioning, after prolonged power failure, after the
heating system has been switched off for longer periods
on its mains electrical isolator or for changing from
summer to winter time and vice versa.
Well screened boiler rooms in cellars can restrict the
reception of the radio clock signal, which makes it
necessary for you to set the date and time manually.
Do not enable the "Radio clock" function outside
Germany.
6 720 802 836 (2012/05)
When using the Programmer as remote control, the reception of the
radio clock signal depends on each location and position. Reception of
the radio clock signal is indicated by a symbol on the display (
[1], page 8). Normally, reception is possible within a radius of approx.
1000 miles around Frankfurt/Main [Germany].
In case of reception problems, please observe the following:
• The radio reception is weaker in rooms surrounded by steel-
• Maintain a minimum distance of 1.5 m from sources of interference,
• The radio reception tends to be better at night than during the day.
B Call up the service level.
B Press Display to call up a submenu.
B Turn the rotary dial until submenu Summer / Winter
B Hold down button Display and turn the rotary dial until the required
Factory setting
medium
Fig. 21 Summer/winter time changeover
B Release Display to save your input.
B Press Back to return to the next higher level.
Summer/winter
Time changeover
Table 16 Setting range Summer/winter time changeover
reinforced walls, cellars, high-rise buildings etc.
such as computer monitors and TV sets.
GENERAL PARAM. appears as the first main menu.
Time changeover is displayed.
value is shown.
The display shows the set value.
GENERAL PARAM.
Summer / Winter
Time changeover
If not Radio clock is selected, the reception of the
atomic clock signal will be turned off for all networked
control units. This also applies to the radio time signals of
the BFU/F remote control and other programming units
with radio clock reception. The last input at a control unit
in the network is valid.
Input range
Radio clock
automatic
manual
fig. 7,
Radio clock
6 720 802 836-22.1TL
Factory setting
Automatic
CFB 840