Service menu
HPC 410 – 6721832682 (2021/02)
12
Fig. 4
Setting of the heating curve for radiators
Gradient via design temperature T
0
and minimum outside
temperature T
1min
Fig. 5
Setting the heating curve for radiators
Parallel shift above Room temperature offset or required room
temperature
T
1
Outdoor Temperature
T
0
Flow temperature
[1]
Setting: T
0
= 75 °C, T
1,min
= –10 °C (base curve), limit at T
0,max
=
75 °C
[2]
Setting: T
0
= 80 °C, T
1,min
= –10 °C, limit at T
0,max
= 80 °C
[3]
Setting: T
0
= 70 °C, T
1,min
= –20 °C
[4]
Parallel displacement of the base curve [1] by changing the offset
by +3 or by increasing the desired room temperature, limit at
T
0,max
= 80 °C
[5]
Parallel displacement of the base curve [1] by changing the
offset -3 or by reducing the desired room temperature, limit at
T
0,max
= 75 °C
Simple heating curve
The simple heating curve (
Ctrl type h. circ. 1
:
Outside temp. with base
point
) is represented by a straight line. This straight line is described by
two points: the base point (starting point of the heating curve) and the
end point.
Table 15 Basic settings of the simple heating curve
Heat constantly below a certain outside temperature
To prevent the system from cooling down, DIN-EN 12831 requires that,
for the maintaining of a comfortable heat, all heating surfaces and heat
sources are designed to a defined output. If the adjusted outside
temperature set under
Constant heat below
is undercut, the active
setback mode is interrupted by normal heating mode.
For example, if the settings
Setback
:
Heating off
: 5 °C and
Constant
heat below
: -15 °C are active, the setback mode is activated when the
adjusted outside temperature is between 5 °C and -15 °C and the heating
mode is activated below -15 °C. This allows smaller heat emitters to be
utilised.
Frost protection limit temperature (outside temperature threshold)
Under this menu item the limit temperature for the frost protection
(outside temperature threshold) is set. It is only effective if
Frost prot.
,
Outdoor temp
or
Room and outside temp.
is set in the menu.
NOTICE
Domestic hot water carrying parts may be damaged beyond repair if
the frost protection limit temperature is set too low and in prolonged
periods with outside temperature below 0 °C.
▶ Only contractors are permitted to adjust the factory setting of the
frost protection limit temperature (5 °C).
▶ Do not set the frost protection limit temperature too low. Damage
caused by a low frost protection limit temperature is not covered by
the warranty.
▶ Set frost protection limit temperature and frost protection for all
heating circuits.
▶ To ensure frost protection for the entire heating system, set either
Outdoor temp
or
Room and outside temp.
in the
Frost prot.
menu.
The setting
Room temperature
does not offer absolute frost protection,
because pipework installed in façades, for instance, can freeze. If an
outside temperature sensor is installed on the other hand, frost
protection can be assured for the entire heating system regardless of the
control type set.
4.3.4
Screed drying menu
This menu is only available if at least one under floor heating circuit is
installed in the system and adjusted.
A screed drying program is set for the selected heating circuit or the
entire heating system in this menu. To dry a new screed the heating
system automatically runs the screed drying program once.
In case of a voltage failure the user interface automatically continues
with the screed drying program. The voltage failure, however, must not
last longer than the power reserve of the user interface or the maximum
interruption duration.
Underfloor heating
system
Radiator
Minimum outside temperature
T
1,min
– 10 °C
– 10 °C
Base point
25 °C
25 °C
0
+10
+20
-10
-20
20
30
40
50
60
70
80
90
C
C
0010021109-001
T
1
T
0
1
2
3
0
+10
+20
-10
-20
20
30
40
50
60
70
80
90
C
0010021110-001
C
T
1
T
0
1
4
5
End point
45 °C
60 °C
Maximum flow temperature
T
0,max
48 °C
75 °C
Room temperature offset
0.0 K
0.0 K
Underfloor heating
system
Radiator
Содержание HPC 410
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