Bosch HPC 400 Installation Instructions For Contractors page 21

@
BOSCH
TCx/OC
60 ,-.-,,-.~,-.-,,-.~
50 1---+---+-+----+'-
~--t-+=c:-:I
40 ~4--+-~~~~~~~~
30 ~~~~+-~~~
T /oC
20~~~--~~~~-~ 1
+20 +10 0 -10 -20
Fig_ 8 Setting the Heating curve for underfloor heating system
TCxl°C
60 , - , - , , - . - , , - , - , , - . - ,
50 ~~~~/~~~=+~~
40 ~~~~~~~-b-~~
30 ~~=+-~~~~~~\~
Service menu
T /oC
20L-~---~-~---~
1
+20 +10 0 -10 -20
6720 815 238-13.10
Left: gradient via design temperature TAL and minimum outside temperature Tl,min
Right: parallel displacement via room-temperature offset or via required room temperature
T
1
Outside temperature
TCx/OC
90
80
70
60
50
40
30
20
T /oC
1
+20 +10 0 -10 -20
Fig_ 9 Setting the Heating curve for radiators/convectors
TCxFlow temperature of heating circuit x (identical to system flow tem-
perature TO if only one heating circuit is installed)
[1] Setting: TAL = 45 D C, T
l.min
= -10 D C (base curve). limit atTCx
max
=
48 D C
[2]
Setting: TAL
= 40
D C, T
l.min
= -10
DC
[3] Setting: TAL
=
35 DC, T
1,min = -
20 DC
[ 4]
Parallel displacement ofthe base curve [1] by changi ng the room
temperature offset +3 or by increasing the desired room
temperature, limit at TCx
max =
48 DC
[51 Parallel displacement of the base curve [1] by changing the room
temperature offset -3 or by reducing the desired room
temperature
TCxl°C
90
80
70
60
50
40
30
20
+20 +10
o
-10
6720 815 238-15.10
Left: gradient above design temperature TAL and minimum outside temperature Tl,min
Right: parallel displacement via room temperature offset or required room temperature
T
1
Outside temperature
TCxFlow temperature of heating circuit x (identical to system flow tem-
perature TO if only one heating circuit is installed)
[1] Setting: TAL = 75 D C, T
1,min
= -10 D C (basecurve).limitatTCx
max
=
75 D C
[2] Setting: TAL = 80 DC, T
l.min
= -10 D C, limit atTCx
max
= 80 D C
[3] Setting: TAL = 70
D C,T
1 min
=-20
D
C
Simple heating curve
The simple heating curve (outsjde temperature compensated control
with base point) is a simplified representation of the heating curve_ This
straight heating curve is described by two points: the base point (the
heating curve starting point) and the end point
Underfloor Radiator
heating system,
convector
Minimum outside temperature T
i,min
- 10"C -10 °C
I
[4] Parallel displacement
of
the base curve [1] by changing the room
temperature offset +3 or by increasing the desired room
temperature, limit at TCx
max
=
75 DC
[5] Parallel displacement ofthe base curve [1] by changing the room
temperature offset
-3
or by reducing the desired room
temperature, limit at TCx
max
=
75 DC
Base point
End point
I
25 °C 25°C
J
- --
- -
45 "C 60°C
Maximum flow temperature TCx
max
48 °C
75 °C
Room temperature offset
O,OK
O ,OK
-
Table 29 Simple heating curve basic settings
HPC !JOO - 6720821712 12017
on
21