10
B 242 - XTE 602 C1 Eng.
22.11.10 AM
REV. 02
We reserve the right to make changes witout notice
COSTER
15. COMPLEMENTARY FUNCTIONS
15.
1
Anticondensing function
Choice of enabling or not anticondensing function
– NO = function disabled
– YES= When the return to boiler temperature (measured by detector B4) falls below the desi-
red anticondensing temp. the controller closes the heating plant valve with modulating
control action.
•
Desired T. : - -. - c = value of anticondensing temperature.
15.
2
Summer plant exercise
This function, which is applicable to both heating zones, prevents lockouts of valves and pumps
when plant is not used for prolonged periods.
– NO = function excluded
– YES = every Sunday at 11.00 the valves are opened for 15 minutes and at 12.00 the pumps
are run for 5 minutes.
15.
3
Access keynumber
Choice and enabling of access keynumber which prevents any modification of data by means of +
and – keys. Enter the number (1900 ... 1999) using + and – keys.
To cancel keynumber, press + and – at the same time until the dashes reappear.
When the keynumber is enabled, if + or – keys are pressed on the display appears the request to
enter the keynumber. Only after having entered the correct keynumber can + and - keys be used.
If for 15 minutes no key is pressed the keynumber is automatically re-enabled.
15.
4
Denomination of heating zones
Composition of name of heating zones.
Each dash can be replaced, using + and – keys, by a letter of the alphabet (A ...Z) or by a number
(0 ... 9). The
←
and
→
keys serve to position the cursor .
15.
5
Display of measurements
The controller displays, for each heating zone, all the values measured by the detectors and the
data necessary to monitor the operational status of the plant :
•
ambient temperature
desired by modes in use and actual measured by detectors B3 and B6.
If the detectors are not connected, in place of Act Amb T appears Cal Amb T .
•
flow temperatures
desired by modes in use and actual measured by detectors B1 and B5.
•
outside temperatures
actual. If detector B2 is not connected to controller, in place of “actual”
appears “C-Ring” and the value is that coming via C-Ring.
•
anticondensing temperature
desired by mode in use and actual measured by detector B4.
If detector B4 is not connected there appears Act AntictT: - - .-.
16.
5
Data recording
For each heating zone controlled the controller, at each change of mode and every two hours, records
a series of data indicating the operational status of the heating zones controlled :
– Current time, day and type of recording (change of mode or expiry of two-hour period); current
mode, actual outside temp., compensated flow temp., desired and actual flow temp., desired
and actual ambient temp., anticondensing temp.
– Relay outputs status
The controller can memorise 28 complete recordings and the last recording brings about the can-
cellation of the oldest one.
If the display does not show the first page, the controller makes the recording at the expiry of the
two-hour period, but not that of change of mode because it presumes changes to the setting data
are in progress.
The recordings can be displayed only by the telemanagement PC.
22.
1 -
22.
2
D e a A m b T : 2 1 . 0 c
A c t A m b T : 2 1 . 0 c
22.
5
O u t s i d e T e m p
A c t u a l : – 2 . 0 c
22.
6
D e s A n t i c T : 5 0 . 0 c
A c t A n t i c T : 5 8 . 0 c
22.
3 -
22.
4
D e s F l o w T : 6 5 . 0 c
A c t F l o w T : 6 4 . 0 c
23.
17
N a m e H t g P l a n t 1
- - - - - - - - - -
24.
17
N a m e H t g P l a n t 2
- - - - - - - - - -
20.
12
A n t i c o n d e n s : N O
D e s i r e d T : 5 0 . 0 c
25.
8
C h o i c e K e y n u m b e r
- - - -
A c c e s s K e y n u m b e r
- - - -
20.
16
S u m m e r P l a n t
E x e r c i s e : N O
