18
P5. Optimise On (Pre-Heat)
1. Press or to select program 5:
SELECT RETURN
5 OPTIMISE ON
CURRENT 000 MINS
When programming a Variable Pre-Heat period (Optimum On) the first switch
on time (P2) should be set to the buildings occupation time. If a variable pre-
heat period is not required, then the first switch on time must allow for a
sufficient warm-up period before occupation time.
When selected, the full programmed variable pre-heat period will occur at 0ºC
external temperature. At temperatures above 0ºC the system will calculate the
required pre-heat time.
Note: To assure adequate temperatures are achieved by occupation time
the maximum pre-heat period must satisfy the building’s thermal
characteristics.
If Optimum On is not required then set to 000 mins.
UP/DN TO CHANGE
CURRENT 000 MINS
2. Press to display:
P
PROGRAM
3. Press or to set the required number of minutes.
SELECT RETURN
4.
Press to confirm program changes and return to main menu.
E
ENTER
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