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
S e a s o n Sw i t c h i n g
FR . OUTS I DE T .
M3.
2
Ou tW i n t e r
T . : 2 0 c
De l a y
:
2 4 h r s
M2.
15
Ou t Summer T .
: 2 5 c
De l a y
:
4 h r s
M2.
16
S e a s o n Sw i t c h i n g
NO
M3.
2
Y
-W i n :XXXXXXXX
Y
- Sum:
M3.
5
Y -W i n :
Y - Sum:XXXXXXXX
M3.
5
Y -
:XXXXXXXX
M3.
5
S e a s o n Sw i t c h i n g
FR . ROOM T .
M3.
2
S e a s o n Sw i t c h i n g
W I NTER
M3.
2
S e a s o n Sw i t c h i n g
SUMMER
S e a s o n Sw i t c h i n g
FR .
SEASONS
M3.
2
W i n t e r S e a s o n
F r : 1 5 . 1 0 t o : 1 5 . 0 4
M1.
19
Summer S e a s on
F r : 1 6 . 0 4 t o : 1 4 . 1 0
M1.
20
W i n t e r S e a s o n
F r : 1 5 . 1 0 t o : 1 5 . 0 4
M1.
19
Summer S e a s o n
F r : 1 5 . 0 5 t o : 1 5 . 0 9
M1.
20
W i n t e r S e a s o n
F r : 0 1 . 0 9 t o : 1 5 . 0 5
M1.
19
Summer S e a s o n
F r : 1 5 . 0 3 t o : 0 1 . 1 1
M1.
20
Ou t Summer T . : 2 0 c
De l a y
:
2 4 h r s
M2.
15
Ou t Summer T .
: 2 5 c
De l a y
:
8 h r s
M2.
16
S e a s o n Sw i t c h i n g
FR . CONTROL
s s
M3.
2
S e a s o n Sw i t c h i n g
FR . CONTROL s s + c 1
Q
Sum
Win
Ycs
Q
Hea
Q
Coo
0%
100%
0%
100%
7
6
5
7
6
5
