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D 215 - RTR 684 C2 Eng. 14.06.00

We reserve the right to make changes without notice

COSTER

14.3 Auxiliary control priority function

•

Auxiliary zone priority

:NO

= function disabled

YES

= function enabled

When RTR 684 is connected in C-Ring with other controllers and the priority function has been

enabled :

– auxiliary control sends via C-Ring the differential value between its own desired temperature

and the actual one ;

– the controllers in C-Ring, with the anticondensing function enabled, decrease their own desired

flow temp. by 4 °C for each °C of difference so as to give precedence to the auxiliary control of

RTR 684.

Note When the priority function is used and the boiler asks for the presence of the anticondensing

detector it is indispensable to connect it to the first RTR 684 controller in the C-Ring.

Auxiliary zone

priori ty : NO

23.6

15. PROGRAMMES

There are separate programmes of timed events for primary control and for auxiliary control.

15.1 24-hour programmes

Set the number of 24-hour programmes you wish to use for the primary zone (1 ... 4) and for the

auxiliary zone (1 ... 3) so as to avoid scrolling unnecessary pages.

In each 24-hour programme you can set a maximum of six event start times (h1 ... h6) assigning to

each one of following modes :

for

primary

zone :

–

TEMP 1…5

: control with Desired Pri temp 1 ... 5 set in

–

OFF

: plant Off, valve closed and pump idle

for

auxiliary

zone :

–

: control with Desired Aux temp set in

–

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 pressing + and – keys at the same time.

Unused events must not be left between programmed events.

15.2 7-day programmes

Set the number of 7-day programmes you wish to use for the primary zone (0 ... 1) and for the

auxiliary zone (0 ... 1) so as to avoid scrolling unnecessary display pages.

In each 7-day programme you can assign to each day of the week one of following programmes :

primary

control :

–

24 HOUR 1 …4 PRI

;

TEMP1…5

;

OFF

for

auxiliary

control :

–

24 HOUR 1 …3 AUX

;

OFF

15.3 BST period

The controller is able to change automatically the time according to the time period (GMT or BST) in

force.

–

Fr - -.- -

= the night of the last Saturday in March the clock is put forward automatically one

hour.

–

to - -.- -

= the night of the last Saturday in October the clock is put back automatically one

hour.

To cancel the period keep pressed + and – keys at the same time.

21.2 - 21.7

P1 Event 1 6 . 00

TEMP 3 21 . 0c

21.1 - 21.8

––– -Number 24hr

programmes ? 1

21.15 - 21.23

––– Number 7day

programmes ? 1

Des i r ed Aux

temp 20.0c

20.6

Desired Primary

temp 20.0c

20.1 - 20.5

21.9 - 21.14

P1 Event 1 6 . 00

ON 50 . 0 c

21.24 - 21.30

7day 1 :MONDAY

24HOUR 1 AUX

21.16 - 21.22

7day 1 :MONDAY

24HOUR 1 PR IMARY

21.31

BST pe r i od

Fr --.--to --.--

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 19 20

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