Technical data

6 720 611 443 GB (03.11)
28
Individual settings
6.2 Settings on the Bosch Heatronic
6.2.1 Operating the Bosch Heatronic
The Bosch Heatronic enables easy setting and check-
ing of a large number of appliance functions.
This description is limited to those functions required
for commissioning.
For a full description of all available functions, please
refer to the Service booklet for the Engineer, order no.
7-181-465-346.
Fig. 38 Appliance controls
1 Service button
2 “Chimney sweep” button
3 Temperature control for central heating
4 Temperature control for hot water
5 Display
Selecting service function:
The service functions are subdivided into two levels:
Level 1 comprises service functions up to function 4.9,
while Level 2 consists of the service functions from 5.0
upwards.
B To select a service function on Level 1: press and
hold the button until the display shows ––.
B To select a service function on Level 2: press and
hold the buttons and simultaneously until the
display shows ==.
B Then turn the temperature control to select the
required function.
The service function 5.0 may be reset.
Entering a setting
B To enter the setting for a function, turn the tempera-
ture control .
Storing a setting
B Level 1: press and hold the button until the dis-
play shows [].
B Level 2: press and hold the and buttons simul-
taneously until the display shows [].
After completing the settings
B Reset the temperature controls and to their
original positions.
6.2.2 Selecting the pump control mode for cen-
tral heating mode (Service Function 2.2)
The choice of settings is as follows:
• Control Mode 1
For heating equipment without a control unit.
The pump is controlled by the central heating flow
temperature control.
• Control Mode 2 (factory setting)
For heating systems with room thermostat.
The central heating flow temperature control controls
only the gas, the pump is not affected. The room ther-
mostat controls both the gas and the pump.
The pump and fan have an overrun time of between
15 s and 3 min.
• Control Mode 3
The pump is controlled by the room temperature con-
troller unit. In summer mode, the pump operates only
for hot water mode.
6.2.3 Setting the anti-cycle time
(Service Function 2.4)
This service function is only active if Service Function
2.7, automatic anti-cycle time, is deactivated.
The anti-cycle time can be set to between 0 and 15 min-
utes (is factory set to 3 minutes).
If the setting 0 is entered, the anti-cycle time is inactive.
The shortest possible anti-cycle time is 1 minute (rec-
ommended for single-pipe and hot-air heating systems).
6.2.4 Setting the maximum CH flow tempera-
ture (Service Function 2.5)
The maximum CH flow temperature can be set to
between 35°C and 88°C (factory setting).
i
Note the positions of the temperature con-
trols and . After completing the set-
tings, return the temperature controls to
their original positions.
Service function Code no. See page
Pump control mode 2.2 28
Anti-cycle time 2.4 28
Max. CH flow
temperature
2.5
28
Switching difference 2.6 29
Max. heating output 5.0 29
Table 14
6 720 610 332-30.1O
5
2 1
4
3
i
If an room temperature controller unit is
connected, pump control mode 3 is auto-
matically activated