5302
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2.4 Settings and Adjustments
Helpful hints
Alter your heating curve, if ...
Type of alteration
... heat output is
insufficient when
outdoor temperatures are cold,
but
adequate during spring and fall
... heat output is
too high when
outdoor temperatures are cold,
but
adequate during spring and fall
Increase the value of the “slope” to the
next level.
Decrease the value of the “slope” one
level.
... heat output during spring and fall
is inadequate,
but sufficient when
outdoor temperatures are cold
... heat output during spring and fall
is too high,
but sufficient when
outdoor temperatures are cold
In Figure
the “parallel shift” of the
heating curve is raised one level, in
Figure
the “slope” is lowered one
level.
In Figure
the “parallel shift” of the
heating curve is lowered one level, in
Figure
the “slope” is raised one
level.
1
2
1
2
Effects of adjusting the
“
”
or
“
”
knob
Example 1: Adjusting the
“
”
dial from
68
º
F to 79
º
F / 20
º
C to 26
º
C
The heating curve is adjusted accordingly
along the desired room temperature axis
and thereby makes available more or less
heat through a higher or lower boiler water
temperature for the same outdoor
temperature.
A
Boiler water temperature/
supply temperature in
ºF
/
º
C
B
Outdoor temperature in
ºF
/
º
C
C
Desired room temperature in
ºF
/
º
C
