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29
Nominal
value
tank
Start
heat
pump
1
Start
heat
pump
2
Start
heat
pump
3
Start
heat
pump
4
Start
heat
pump
5
Start
heat
pump
7
Start
heat
pump
8
Start
heat
pump
6
Restart
hysteresis
Temp
diff
between
heat
pumps
Step
time
Step
time
Step
time
Step
time
Step
time
Step
time
Step
time
Max
temp
diff
tank
1/heat
pump
Before
any
heat
pump
is
started
a
control
is
done
in
order
to
check
if
it’s
possible
for
the
heat
pump
to
operate
to
any
of
the
tanks.
This
check
is
done
by
comparing
the
actual
value
on
the
tank
sensor
and
the
maximum
temperature
that
the
heat
pump
can
provide
at
the
given
point.
The
setting
gives
the
minimum
temperature
difference
between
the
tank
temperature
and
the
heat
pumps
max
flow
temperature.
If
for
example
the
max
allowed
flow
temperature
for
the
heat
pump
is
59C
and
the
set
value
is
8C
it
gives
that
the
maximum
allowed
temperature
in
the
tank
can
be
59
‐
8C=51C
in
order
for
the
heat
pump
to
start.
The
same
control
is
done
when
the
system
is
switching
between
charging
tank
1
and
tank
2.
Max
temp
diff
tank
1/heat
pump
Same
analogy
as
max
temp
diff
tank
1/heat
pump