19
E 121 - DTU 614 C2 Eng. 04.07.01
We reserve the right to make changes without notice
COSTER
24. SEASON SWITCHING
The controller switches the action of output Y and the position of season control Ysc depending on
the selection: NO; WINTER; SUMMER; THROUGH ss CONTROL; THROUGH ss + c1 CONTROL;
AUTOM. BASED ON OUTSIDE TEMP.; AUTOM. BASED ON SEASON;
• Without season switching :
– the action of output Y is according to setting in
– season control Ysc cannot be used
• Manual season switching through display:
Winter: – the action of output Y is according to setting in
– season control Ysc is on Winter:
7-6 = closed; 7-5 = open.
Summer : – the action of output Y is according to setting in
– season control Ysc is on Summer:
7-6 = open; 7-5 = closed.
• Season switching according to position of season switch
ss (D-E1-E2).
– with D-E1 closed and D-E2 open: action of output Y and season control Ysc to Winter
– with D-E1 open and D-E2 closed: action of output Y and season control Ysc to Summer
• Automatic season switching according to outside temp. (only if B2 is connected).
When outside temp. remains lower than
For a period exceeding
The controller switches the action of output Y and season control Ysc to Winter
When outside temp. remains lower than
For a period exceeding
The controller switches the action of output Y and season control Ysc to Summer
• Automatic season switching according to room temp. (only if B3 is connected).
When Heating
load value Qhea is higher than 0% and the
Cooling
load value Qcoo is 0%, the season control Ysc
switches to Winter
.
When
Heating
load value Qhea is 0% and the
Cooling
load
value Qcoo is higher than 0%, the season control Ysc
switches to
Summer.
•Automatic season switching according to season periods. In this case, the following conditions
may be true:
– Successive season periods :
Result: no intermediate periods
From Oct 15 to Apr 15 = Y setting and Ycs season switch on Winter
From Apr 16 to Oct 14 = Y setting and Ycs season switch on Summer
.
– Shortened season periods: :
Result: intermediate periods with unit off
From Oct 15 to Apr 15 = Y setting and Ycs season switch on Winter
From Apr16 to May 14 = Y setting on OFF and Ycs season switch on Winter
From May15 to Sept 15 = Y setting and Ycs season switch on Summer
From Sept 16 to Oct 14 = Y setting on OFF and Ycs season switch on Summer
– Overlapping season periods :
Result: overlapping periods according to outside temperature
From Nov 2. to March14 : = Y setting and Ycs season switch on Winter
From May 16 to Aug 31 : = Y setting and Ycs season switch on Summer.
From March 15 to May 15 and from Sept 01 to Nov 01 :
when outside temperature stays below Winter Outside Temp.
for a period exceeding:
the controller switches Y setting and Ycs season switch to Winter
when outside temperature stays above Summer Outside Temp.
for a period exceeding:
the controller switches Y setting and Ycs season switch to Summer
Season Swi tching
FR . OUTS I DE T .
M3.2
Ou tWi n t e r T . : 2 0c
De l ay : 24h r s
M2.15
Ou t Summer T . : 2 5c
De l ay : 4hrs
M2.16
Season Swi tching
NO
M3.2
Y -Wi n :XXXXXXXX
Y-Sum:
M3.5
Y-Win:
Y - Sum:XXXXXXXX
M3.5
Y - :XXXXXXXX
M3.5
Season Swi tching
FR . ROOM T .
M3.2
Season Swi tching
WINTER
M3.2
Season Swi tching
SUMMER
Season Swi tching
FR . SEASONS
M3.2
Winter Season
Fr:15.10to:15.04
M1.19
Summer Season
Fr:16.04to:14.10
M1.20
Winter Season
Fr:15.10to:15.04
M1.19
Summer Se ason
Fr:15.05to:15.09
M1.20
Winter Season
Fr:01.09to:15.05
M1.19
Summer Season
Fr:15.03to:01.11
M1.20
Ou t SummerT . : 20c
De l ay : 24hrs
M2.15
Ou t Summer T . : 2 5c
De l ay : 8hrs
M2.16
Season Swi tching
FR . CONTROL ss
M3.2
Season Swi tching
FR.CONTROL ss+c1
Q
Sum
Win
Ycs
Q
Hea
Q
Coo
0% 100%0%100%
7
65
7
65
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