Page
|
18
Heat
curve
point
C
Point
C
has
2
meanings.
On
the
one
hand,
it
is
used
to
adjust
the
gradient
of
the
heating
curve
during
warmer
outdoor
temperatures,
but
it
is
also
used
as
a
"shutoff
temperature"
for
the
heat
to
the
heating
system.
When
the
outdoor
temperature
reaches
this
temperature
and
stays
there
for
at
least
8
hours,
the
mixing
valve
closes
fully
and
the
radiator
pump
is
set
off,
i.e.
no
heat
is
sent
to
the
heating
system.
During
summer
time
when
heat
is
in
off
‐
mode
both
circulation
pump
and
mixing
valve,
which
determines
the
temperature
to
the
heating
system,
will
be
run
periodically
in
order
to
prevent
sticking.
Adjusting
point
C
on
the
heating
curve.
(The
factory
default
value
of
+17
°
C
is
marked
with
a
cross).
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
‐
30
‐
25
‐
20
‐
15
‐
10
‐
5
0
5
10
15
20
25
30
35
40
45
Fl
o
w
te
m
p
e
ratu
re
hea
tin
g
sys
te
m
Heating
system