19
Program 96:
Release of
A2
via
S4
, burner demand
A3
.
For
adjustable boiler operation without the mixer
it makes sense to set the threshold
values
min1
and
min2
to
PREmin
and to activate the pump switch-off condition
PN < PM
in
the
PUMP
menu.
A1 = Thermal mixer
A2 = S4 > min1 & (heating = active)
A3 = (S4 < min2 or S4 < NP + diff2) & heating = active
In this program, the switching mode of the values
diff2
and
diff2
functions in exactly the
opposite way: the value
diff2
in conjunction with the calculated pre-run set temperature
gives the switch-on threshold and
diff2
the switch-off threshold.
All pr4:
As for program 96, however with output of a 0 – 10V voltage via the
con-
trol output 1 for burner modulation
as long as
A3
is active.
For activation of A3 via
Output value
Heating active and S4 < min2
min2 + offset value OFS
Heating active and S4 < NP + diff2
NP + diff2 + offset value OFS
Fixed scaling:
0°C = 0.0 V
100°C = 10.0 V
Example: The output value 55°C is output at the control output as 5.5 volts.
With
A3
in operating condition
OFF
control output 1 is set to 0V.
In menu
COP1
in this program there are the following setting options:
OFS
Offset value for output value, adjustment range -50K … +50K, fs = 0
0-100
Output mode, 0-100 or 100-0, fs = 0-100
MIN
Minimum output value (Adjustment range 0 … 100), fs = 0
MAX
Maximum output value (Adjustment range 0 … 100), fs = 100
ACT
Actual output value
TST
Adjustable test value (adjustment range 0 … 100). Calling
TST
leads automatically to
manual mode. As soon as the value above the key
(= Entry) flashes, the control
output indicates the set values.
