IDEAL LOGIC+ Combi User Manual page 14

advaNCEd FEaTURES
C. OPTIMIsATIOn
This feature provides for greater comfort and economy of operation. The boiler will be switched on earlier than
the programmed heating on time. This provides for the room temperature to be achieved at the programmed
heating on time, rather than some time afterwards. The boiler will automatically only use the minimum energy
required in order to achieve the desired room temperature.
To set an optimisation period, press the 'Copy' and 'Next Day' keys together for more than 3 seconds. Note
that the programmed heating on time should be set for when the house is required to be at the set temperature
and not to allow for warming up of the property.
The optimisation can then be set between 10 and 60. (Note that 00 = OFF)
It is advised that a setting between 10 and 30 should be used, to ensure the central heating does not switch on
earlier than desired.
This number is multiplied by the difference between the actual temperature and the desired temperature to
determine what time before the start of the 1st on period the heating should be switched on.
EXamPLE 1:
If the optimisation period is set to 10 and the desired room temperature is 20ºC at 6am and the actual room
temperature is 19ºC then the central heating will switch on (20-19) x 10 = 10 mins early (i.e. at 5.50am)
EXamPLE 2:
If the optimisation period is set to 30 and the desired room temperature is 20ºC at 6am the actual temperature
is 16ºC then the central heating will switch on (20-16) x 30 = 2 hours early (i.e. at 4.00am)
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