Error Handling - Bosch 7 736 500 272 Manual Del Usuario

OBJ_DOKU-6720646273-01.fm Page 17 Wednesday, April 13, 2011 6:26 PM
2.3 Appliance cascading mode
setting
Perform this procedure on all
appliances in the cascading set
up.
All appliances in the installation
must be adjusted to the same
outlet water temperature by
selecting on any appliance all the
others will update the set
temperature accordangly.
B Push ON/OFF switch to the OFF position.
B Press and hold the program button
then press the ON/OFF button to the ON
position. As soon as '188' flashes on the
display, release the
– The display should now read P2.
B Press the button until P5 appears.
+
B Press Program button
– The display should now read NC (normal
mode).
B Press button until CC (cascading mode)
+
appears.
B Press and hold Program button
blinks on the display.
B To enter in the main menu, press
– After the "CC" is selected, two new
menus will become available in the main
menu, PH and PC.
To acess PH and PC menu,
B Press the button until PH or PC appears.
+
PC - Primary and Secondary selection
MS - Primary
•
– Only one appliance in the cascading
system should be selected as "Primary".
SL - Secondary (default)
•
6 720 646 273 (2011/03)
PH - Cascading mode selection
•
•
The appliance is now programmed to operate in
and
the cascading mode.
2.4
button.
2.4.1 Hot water requests
Currently operating units reach 80% of their
.
capacity, it passes on hot water requests to the
next secondary heater in the system. Secondary
acts like a primary to the next secondary. When
primary reach 30% of his capacity it will remove
the request sent to the secondary.
until CC
2.4.2 Water demand from solar
When the primary reads flow higher than 30 L/
button.
min and inlet temperature is higher than set
point, water will flow through the appliance
working with the solar function and the primary
will send a hot water request to the next
Secondary in the system. This way, when the
appliances are in solar mode, the water flow of
the cascading system will not be restricted.
This function is reset when inlet temperature
reaches set point - 4ºC. Appliances will get out of
solar mode and restart normal operation.

2.4.3 Error handling

When one appliance in the cascading system is
locked, due to an error code, all actions are
Cascading operation
– The others appliances in the cascading
system must be "Secondary".
IC - Intelligent Cascading (default)
– The primary will rotate after 100h/work.
SC - Simple Cascading
– There will not be any primary rotation
when this appliance is selected as primary.
Selection is done pressing the
button until the display
starts flashing.
Functional requirements
17