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www.insbud.net
13
12
E
nglish
E
nglish
f
REsh
WaTER
ciRculaTiOn
pump
f
REsh
WaTER
ciRculaTiOn
pump
Controller is equipped with a fresh water cir-
culating pump control function (
P2 pump
).
Control of fresh water circulating pump can
be done in two ways:
1.
Control based on return
temperature of fresh water
circulation. If fresh water
pump control is by this me-
thod, special symbol is visible on di-
splay.
T4
sensor must be connected to
use this control method. Fresh water
circulation pump is turned on when
temperature on
T4
sensor drops be-
low set value. It is recommended that
T4
sensor be placed on return pipe of
fresh water circulation or just before
last fresh water receiver. To this place,
fresh hot water will be pushed and
then fresh water pump will be turned
off. Just as water pipe in the circula-
ting pump will cool down, fresh water
circulation pump will be turned on.
Attention. If the temperature in the
upper part of tank No 1 (T3) is too
low to warm T4 sensor to desired
temperature, the circulation pump
will not be turned on.
2.
Control based on time pe-
riods. f fresh water pump
control is by this method,
special symbol is visible on
display. Controller controls fresh water
pump according to periods of time:
work time
and
break time
. E.g. Cir-
culation pump is turned on every 20
min for 3 min. Both periods are
adjustable.
e
If on display is not showed any of above
symbols, this means that fresh water cir-
culation pump is not controlled by con-
troller at all.
e
If fresh water circulation pump is wor-
king
P2
symbol on display is flashing.
e
Fresh water circulation pump is control-
led only in set daily periods of time (only
between beginning and end of the pe-
riod). Often there is no need for circula-
tion pump control during the night or
when no one is in the building. Apart
from these periods circulation pump
never turns on.
To choose method of control of fresh water
circulation pump please:
Repeatedly press the button.
Press and hold button.
Repeatedly press the button to set
further parameters:
T4on
- Value of temperature [ºC]
below which fresh water circula-
tion pump is turned on (parameter
adjustment available only for first
method of control)
T4off
- Hysteresis between turning
on and turning off fresh water cir-
culation pump (parameter adju-
stment only for first method of
control)
on
- Work time period [min] - how
long the pump has to work in one
cycle (parameter adjustment ava-
ilable only for second method of
control)
After selecting control method, you can set
the parameters of control function. Depen-
ding on selected control method there are
different parameters settings. To adjust para-
meters of function please:
f
OuRTh
sysTEm
- T
WO
cOllEcTORs
aREas
and
TWO
Tanks
Circulation pump of the first collectors area
(P1) is started when temperature difference
of the first collectors area (T1) and tempera-
ture in the target tank (T2 or T5) reaches the
set value of switching on. Similarly, circula-
tion pump of the second collectors area (P0)
is started when temperature difference of
the second collectors area (T0) and tempera-
ture in the target tank (T2 or T5) reaches the
set value of switching on. Circulation pumps
(P1 and P0) are working independently from
each other - the pumps may work simultane-
ously, don’t work at all or one pump works.
Three-way valve (R2) is set in the position to
load appropriate tank. Tanks are loaded ac-
cording to the selected priority (description
is later in this manual). Suitable loading pump
is turned off when temperature difference
between the suitable collectors area and
the loaded tank falls below the set value of
switching off or temperature in the tank (T2
or T5) reaches the set maximum value. The
Pump of collectors is controlled with conti-
nuously speed adjustment.
There is a posibility to pump heat between
tanks (description is later in this manual).
This system is recommended when areas of
the collectors are working independently for
each other (east-west layout with a low slope,
there may be a case when two collectors are-
as are working simultaneously).
External power supply (H2) works as in the
third system.
In fact, the second collectors area may be re-
spectively hydraulically connected another
device which produces thermal energy for
example: heating fireplace.
In fact, the second tank may be respectively
hydraulically connected swimming pool.
Day
T1
T3
T6
T5
T2
H1
T4
T0
1
P2
P
P1
P0
System
2
H2
