8
B 242 - XTE 602 C1 Eng.
22.11.10 AM
REV. 02
We reserve the right to make changes witout notice
COSTER
14. PROGRAMMES & PERIODS WITH DATES
All programmes with timed events and periods with dates are available for both heating zones.
14.
1
24-hour programmes
Enter the number of 24-hour programmes you wish to use (from 1 to 25).
In each 24-hour programme (
P1 ... P25
) you can set a maximum of 6 event start times (
Event 1 ...
Event 6
) assigning to each one of following modes :
– NORMAL 1...5 = compensated control with NORMAL ambient temperature
– SETBACK 1 - 2 = compensated control with SETBACK ambient temperature
– FLOW 1 - 2
= control with fixed FLOW temperature
– FROSTPROT
= compensated control with FROSTPROT ambient temperature
– OFF
= plant Off, valve closed and pump idle
The event start times must be entered in increasing order.
Events not used must be excluded by pr and – keys at the same time (– – –).
Unused times (– – –) must not be left between programmed events.
21.
2
⇓
⇓
21.
7
P 1 E v e n t 1 0 6 . 0 0
N O R M A L 3 2 1 . 0 c
P 1 E v e n t 6 2 2 . 0 0
S E T B A C K 1 1 6 . 0 c
21.
1
H o w m a n y 2 4 h o u r
P r o g r a m m e s ? 1
13.
3
Enabling of the function
• Optimum start = automatic change of start time of plant after stop / night setback or after holidays.
– On :
NO = optimum start function disabled
YES = optimum start function enabled
• Optimum stop = stop before end of NORMAL (day) mode on condition that temperature at end of
event is not below that set in 23.
14 -
24.
14
.
– Off : NO = optimum stop function disabled;
YES=optimum stop function enabled.
• The functions are not enabled in FLOW 1 and 2 modes and are operative only at first and last event
of programme.
13.
4
Start inertia
Time necessary (hours / °C) for plant to increase ambient temperature by 1 °C.
– MANUAL
= value can be adjusted only manually
– AUTOMATIC = only with ambient detector; automatic daily adjustment of ± 15 minutes.
13.
5
Duration of normal optimisation
Maximum period before start occupancy for first startup of plant when controller uses one of 7-day
and/or 24-hour programmes available; in practice, startup after being switched off for a night.
13.
6
Duration optimisation after holiday
Maximum period before start occupancy for first startup of plant after a holiday period.
13.
7
Boosting
Increase in desired ambient temperature, and consequently in flow temperature, during optimum
start period, so as to reduce time for heating zone(s) to reach required temperature.
With ambient detector, if desired ambient temperature is reached before required time the controller
switches to compensated control according to programme.
13.
8
Cooling time constant
Time taken by ambient temperature, with heating zone(s) switched off, to fall by 2/3 its initial value.
It is used by controller to calculate ambient temperature (in SETBACK / FROSTPROT modes) when
plant is without ambient detector.
13.
9
Reduction of temperature for optimum stop
Maximum reduction in ambient temperature permitted at time of end of occupancy in respect of
desired ambient temperature.
13.
10
Maximum optimum stop
Maximum period before end occupancy permitted for stopping plant.
The time is calculated in relation to temperature reduction set in with
ambient detector and to “Cooling time constant” without ambient detector.
With ambient detector: if ambient temperature falls, by the reduction value set, before the time
occupancy ends, the controller returns to operating according to programme.
23.
9-
24.
9
S t a r t I n e r t i a
M A N U A L 1 . 0 0 h / c
23.
10-
24.
10
O p t S t a r t N o r m a l
M a x D u r a t : 2 . 0 0 h
23.
11-
24.
11
O p t S t a r t H o l i d a y
M a x D u r a t : 1 0 . 0 0 h
23.
12-
24.
12
O p t i m u m S t a r t
B o o s t i n g : 3 . 0 c
23.
13-
24.
13
C o o l i n g T i m e
C o n s t a n t : 4 8 h r s
23.
14-
24.
14
O p t i m u m S t o p
D e c r e a s e T A : 0 . 5 c
23.
15-
24.
15
O p t i m u m S t o p
M a x D u r a t : 1 . 0 0 h
O p t i m u m S t o p
D e c r e a s e T A 0 . 5 c
23.
14-
24.
14
20.
14
O p t i m i s H t g 1
O n : N O O f f : N O
20.
15
O p t i m i s H t g 2
O n : N O O f f : N O
