TP9000  
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Option 3 - Calendar clock rules
This establishes the rules that the automatic calendar 
clock follows to calculate changes between summer 
and winter time. Press + until Option 3 is displayed, 
use Λ and V to select required setting
Setting 0 Disabled.
Setting 1
Manual: user must change using + to advance and - to 
retard displayed time.
Setting 2 European rules. (Factory Setting)
Setting 3 USA rules (2007 onwards)
Setting 4 USA rules (pre-2007)
Option 4  - Time zone off set
This feature allows the time zone to be established 
and corrects time display.  Press + until Option 4 is 
displayed, use Λ and V to select required setting
Setting 0
UK models: this feature should be left at the factory setting 
of 0.
Setting 1
Central European time models: this feature should be left 
at the factory setting of +1:00.
-12 Hours +14 Hours
Rest of World: use Λ  and V keys to select off set from Universal time 
(GMT) for the location in which the thermostat is being installed.
Option 10 - Frost/ thermostat mode setting
This feature allows the default frost/thermostat 
mode temperature to be set. Press + until Option 10 
is displayed, use Λ and V to select required setting.
5-40°C - Factory setting is 5°C, but can be changed to any value 
between 5-40°C.