6 720 645 347 (2010/09)
Menu settings INSTALLER SETTINGS (for contractors only)
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8.5.1 Commissioning the solar thermal system
Contractor level: Solar sys parameters
Before commissioning the solar thermal system
you must:
B
Fill and vent the solar thermal system.
B
Check the parameters for the solar thermal
system and, if necessary, finely adjust them to
suit the installed system.
•
Run solar system
: Use this menu point to
commission the solar thermal system.
–
Yes
: Solar thermal system is active. The
ISM control outputs are enabled for
automatic control purposes.
–
No
: Solar thermal system is not active. The
ISM switching outputs are disabled for
automatic control purposes but can be
switched on manually.
For menu structure and setting ranges
Æ
page 56.
8.5.2 Parameters for the standard solar
thermal system
Menu: Solar sys parameters > 1. Standard
system
Use this menu to set the parameters for the solar
thermal system if you are using it to provide
domestic hot water.
•
SP: ON temperature difference
: Use this
menu point to set the start temperature
differential for the solar circuit pump (SP).
If the difference between the collector
temperature (T1) and the solar cylinder
temperature (T2) rises above the set figure,
the solar circuit pump (SP) is switched on.
•
SP: OFF temperature difference
: Use this
menu point to set the stop temperature
differential for the solar circuit pump (SP).
If the differential between collector
temperature (T1) and the solar cylinder
temperature (T2) drops below the set value,
the solar circuit pump (SP) will be switched
off.
•
T2: Max. solar cylinder temperature
: For a
detailed description of
T2: Max. solar
cylinder temperature
,
Æ
page 50.
•
Maximum collector temperature
: Use this
menu point to set the maximum temperature
at the collector temperature sensor (T
1
).
If the temperature detected at the collector
sensor (T
1
) rises above the set figure,
operation of the solar circuit pump (SP) is
disabled until the temperature drops back
below the set figure.
•
SP: Collector grp 1 pump mode
: Use this
menu point to set the operating mode for the
solar circuit pump (SP).
–
Auto
: Automatically controlled operation
according to the set parameters.
–
Manual On
: Switches the pump
permanently on (e.g. for venting the solar
thermal system when commissioning).
–
Manual Off
: Switches the pump
permanently off (e.g. for maintenance work
on the solar thermal system without having
to interrupt heating operation).
For menu structure and setting ranges
Æ
page 56.
At temperatures above 140 °C and
system pressures < 4 bar, the heat
transfer fluid in the collector
evaporates. The solar circuit pump
remains disabled until the collector
has cooled to a temperature at
which there is no more vapour in the
solar circuit.
