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19
Cracking
of
heat
curve
When
the
outdoor
temperature
is
around
0
°
C
and
it
is
very
windy,
slightly
warmer
water
may
sometimes
need
to
be
sent
to
the
heating
system.
We
call
this
adjustment,
when
the
outdoor
temperature
is
0
°
C,
cracking
the
curve.
If
you
feel
that
there
isn't
enough
heating
when
it
is
around
0
°
C
outside,
but
it
is
otherwise
sufficient,
you
can
increase
this
setting
somewhat.
Adjusting
the
cracking
point.
(The
factory
default
value
is
0)
35
36
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49
50
‐
10
‐
9
‐
8
‐
7
‐
6
‐
5
‐
4
‐
3
‐
2
‐
1
0
1
2
3
4
5
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7
8
9
10
Fl
o
w
te
m
p
e
ratu
re
hea
tin
g
syst
e
m
Outdoor
temperature