17
All Pr2:
The burner demand at control output
STAG 2
is enabled either if the threshold
min3
is un-
dershot at DHW cylinder sensor
S6
or if the set flow temperature
SV
plus differential
diff2
is
undershot at buffer sensor
S4
. The burner demand is interrupted if the temperature at boiler
sensor
S5
undershoots threshold
max2
.
A1 = (heating = active)
COP1 10V (on) = S4 > min1 & S4 > (S6 + diff1) & S6 < max1
COP2 10V (on) = S5 < max2 & (S6 < min3 or (S4 < SV + diff2))
COP2 0V (off) = S5 > max2 or (S6 > max3 & (S4 > SV + diff2))
COP1 off
S4 < min1
A1 on
diff1
COP1
Switch-off cond.
PUMP
S6 > max1
A1 off
COP1 off
Required settings:
Basic control level:
Time
Operating mode (preferably
AUTO
) Set room temp. for lowering mode
RTL
Set room temp. for normal operation
RTN time programs for normal operation
Parameter menu:
Program number
PR
min1 ...
Buffer
S4
COP1
min3 ...
Burner demand on
S6
COP2
max1 ...
DHW cylinder
S6
COP1
max2 ...
Burner demand off
S5
COP2
max3 ...
Burner demand off
S6
COP2
diff1 ...
Buffer
S4
– CYL
S6
COP1 diff2 ...
Offset to set flow temp.
NP
COP2
Heat curve
TEMP
or
R RISE
Flow maximum and minimum temperature
PRE
max,
PRE
min)
Parameter frost protection mode (
OTF
,
RTF
)
Menu Men
MIXER
(Room influence etc.) and
PUMP
(Switch off conditions)
Burner demand
COP2
S5 < max2
and
on
S6 < min3 (fs = 40°C)
off
S6 > max3 (fs = 65°C)
or
S4 <
NP
+ diff2
(NP = set flow temperature)
COP2 = Burner
demand
COP1