18
100%.
If
the
said
difference
between
temperatures
T1
and
T2
drops
below
dTonDHW,
the controller will start reducing the
pump speed, until the difference between
T1
and
T2
reaches
the
value
specified
as
dToffDHW
. If the difference between
T1
and
T2
is between the values
dTonDHW
÷
dToffDHW
,
the controller will calculate and set the pump
speed proportionally.
When
dToffDHW
is reached, the pump will work
at minimal speed (
Pmin
parameter), below it will
be stopped.
The system will operate by the time when
T2
sensor temperature reaches the preset
TsDHW
,
and then it will be stopped.
If
T1
collector temperature reaches critical
value (
TCOLcr
), than the collector will allow the
collector pump to be switched on, to reduce the
critical temperature blow hysteresis
HP1.
If
the
reservoir
reaches
maximal
temperature
TDHWmax,
the
P2
input (controls
discharge valve) will be operated, until the
reservoir temperature (
T2
sensor) drops to the
value
T2<TDHWmax-HP2.
List of settings in
Adjustment
menu
:
TsDHW-
Reservoir temperature preset
.
Alarm TCOLcr
–
Switching on (YES) or off (NO)
the
alarm
on
exceeding
TCOLcr
temperature. This function will not affect the
controller operation. If the parameter is set
as NO the controller will not alarm after
TCOLcr
temperature has been exceeded at
the collector’s sensor.
13.5.
Solar thermal scheme D
Loading of
DHW
reservoir
A
with a function for
heat transfer to
DHW
reservoir
B
.
Fig. 13.4 Solar thermal scheme D
The collector pump will be started with
100% capacity, if the difference between
T1
and
T2
exceeds
the
value
of
dTonDHW
setting, and it will be working for the time
specified in parameter
tP
. If after this time the
difference between
T1
and
T2
is still above
dTonDHW
, the pump speed will remain at
100%. If the said difference between
T1
and
T2
drops below
dTonDHW,
the controller will start
reducing the pump speed, until the difference
between
T1
and
T2
reaches the value specified
as
dToffDHW
. If the difference between
T1
and
T2
is between the values
dTonDHW
÷
dToffDHW
, the controller will calculate and set
the pump speed proportionally.
When
dToffDHW
is reached, the pump will work
at minimal speed (
Pmin
parameter), below it will
be stopped.
If the difference between
A
and
B
reservoir
temperature reaches the value of
dTAB
(
T3
and
T4
difference),
P2
will be started to transfer heat
to the reservoir
B
. The pump will be stopped, if
the
difference
between
temperatures
T3
and
T4
drops below the difference
dTAB-HP2).
If the collector temperature
T1
reaches
the value of
TCOLcr
, the collector pump will be
started
(despite
of
reaching
TsDHW
temperature). This is aimed to reduce the
collector’s temperature. It will be stopped, when
T1
temperature drops below
T1<TCOLcr-HP1,
or
if the reservoir temperature at
T2
sensor
reaches the value of
TDHWmax
.
List of settings in
Adjustment
menu
TsDHW-
Reservoir temperature preset
A
and
B
.
dTAB-
temperature
difference
between
reservoirs
A
and
B
(
T3
and
T4
sensors), that
when reached causes the controller to start
P2
pump, which transfers heat to the
reservoir
B
.
P2
will be stopped, if the
difference
of
dTAB
(
T3
and
T4
temperatures) drops by the value of auxiliary
hysteresis
HP2.
Night cooling- YES
enables /
NO
disables night
cooling mode in hours 0
00
÷5
00
.
Night cooling ON
–
DHW
reservoir temperature
(
T2
sensor) that when exceeded at 0
00
, if
night cooling function is enabled, the
controller will decide on night cooling
activation.
Night
cooling
OFF
–
DHW
reservoir
temperature (
T2
sensor), to which the
controller will be cooling down the reservoir
(if night cooling function is enabled and if
between
0
00
÷5
00
Night
cooling
ON
temperature was exceeded).
Alarm TCOLcr
–
Switching on (YES) or off (NO)
the
alarm
on
exceeding
TCOLcr
temperature. This function will not affect the
controller operation. If the parameter is set
as NO, the controller will not alarm if
TCOLcr
temperature has been exceeded at the
collector’s sensor
.
Содержание PCSol 201
Страница 1: ...INSTALLATION AND OPERATION MANUAL REVISION 1 1_EN Controller PCSol 201 FOR SOLAR COLLECTORS 07 2020 ...
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Страница 7: ...OPERATING MANUAL PCSol 201 ...
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Страница 56: ...SALUS Controls Made in Poland ...