Hi-T2
Centralised controller
25
4.6.4
PROGRAMS SETUP (CHRONOTHERMOSTAT)
The chronothermostat programming takes place separately from the chillers and fan coil terminal units: so it is necessary to
program both the switching on and off of the chillers, and the switching on and off of the zones to which the fan coils are
associated; the starting-up of a programmed zone is not a sufficient condition for the startup of the chiller(s) connected in parallel
to the plant.
From the main page of the system, go to "
Programs
"... . ;
Now you can choose between 4 programs:
•
“
Summer Chiller
”, to set the weekly time programming of chillers in summer mode;
•
“
Winter Chiller
”, to set the weekly time programming of chillers in winter mode;
•
“
Zones summer
”, for setting the weekly time programming of the zones in summer mode,
•
“
Zones winter
”, for setting the weekly time programming of the zones in winter mode;
In addition, if DHW mode is enabled (from System main page->
Configuration
->
Service menu
->
Parameters
->
Chiller
->
Chiller
name
->
H10: DHW presence = 1
), you can access to two other programs:
•
“
DHW mode
” to set the weekly time programming mode of the chiller in DHW mode.
•
“
Legionella
” to set the weekly time programming of the legionella disinfection cycle.
4.6.4.1
WEEKLY CHILLER PROGRAMMING
The chillers can be defined on seven days, independently and with minimum steps of 15 minutes, with the following operating
status:
•
Off
•
Normal operation (use of normal water control settings)
•
Economical operation (use of the economic water regulation settings)
The weekly programming in summer operation is distinct from that in winter mode.
Figure 24. Chronothermostat, "Summer Chiller" page.
1.
Scheduling of day time slots:
•
press on the day currently displayed to move to the next day;
•
choose if you want to set an operation time slot in normal mode (press "
Normal
"), or Economy (press "
Eco
"), or if you want
to set to Off (press "
Off
");
•
check that the word "From" appears after "Time" (if instead the word "To" appears, you need to press it once to display the
word "From") and select the hour and minutes (the minimum allowable variation is 15 minutes) for the beginning of the
time slot;
•
press "From" once so that the word "To" appears and select the hour and minutes (the minimum variation permitted is 15
minutes) for the end of the time slot;
•
confirm the single time slot by pressing the green confirmation symbol at the top right
;
•
afterwards you can observe that, corresponding to the selected time slot, you will see a time-line bar of the colour of the
type of the selected setting (if normal blue, green when in economy mode, no bar in "Off");
•
repeat the above steps for all the time slots that you want to set on that particular day.
•
To exit and save the changes you have made (on the whole program, for all week), press the ESC
button,
while if you
press the Home button, you will exit without saving the changes.
2.
It is possible to copy the programming for a particular day to another day; to do this:
Chiller
Day
Temperature
Time
Monday
Normal
Eco
Off
From
