D e lt a S o l
®
C/3
© RESOL 11150 deltasol_c/3.monen.ind
d
|
12
4.1.8
∆
T-regulation
Please note:
Switch-on temperature difference DO must
be at least 1 K higher than the switch-off tempe rature-
difference DF.
DT O
:
Switch-on temperature diff.
Adjustment range:
1,0...20,0 K
Factory setting: 6.0
DT F:
Switch-off temperature diff.
Adjustment range
0,5 ... 19,5 K
Factory setting 4.0 K
This function is a standard differential control. If the switch-
on differential is reached (
DT O
), the pump is operated.
If the temperature difference falls below the adjusted
switch-off temperature difference (
DT F
), the controller
switches off.
4.1.7 Heat quantity measurement option
Heat quantity measurement is possible if a flowmeter is
used. For this purpose, the heat quantity measurement
option (
OHQM)
has to be enabled.
The flow rate should be read from the flowmeter (l/min)
and has to be adjusted in the channel
FMAX
. Antifreeze
type and concentration of the heat transfer medium have to
be adjusted in the channels
MEDT
and
MED%.
Antifreeze type:
0 : water
1 : propylene glycol
2 : ethylene glycol
3 : Tyfocor
®
LS / G-LS
The flow rate as well as the reference sensors S1 (flow) and
S4 (return) are used for calculating the heat quantity sup-
plied. It is shown in kWh in the channel
kWh
and in MWh
in the channel
MWh
. The overall heat quantity results from
the sum of both values.
The accumulated heat quantity can be reset. As soon as
one of the display channels of the heat quantity is selected,
the symbol
is permanently shown on the display. Press
button SET (3) for about 2 seconds in order to access the
RESET mode of the counter. The display symbol
will
flash and the heat quantity value will be set to 0. In order to
finish this process, press the
button to confirm.
In order to interrupt the RESET process, no button should
be pressed for about 5 seconds. The controller automatically
returns to the display mode.
OHQM
:Heat quantity
measurement
Adjustment range: OFF ... ON
Factory setting: OFF
FMAX:
Flow rate in l/min
Adjustment range 0 ... 20
in 0,1-steps
Factory setting: 6,0
kWh/MWh
: Heat quantity
in kWh / MWh
Display channel
MEDT:
Antifreeze type
Adjustment range: 0 ... 3
Factory setting: 1
MED%:
Antifreeze concen-
tration (Vol-) %
When MEDT 0 or 3 is used,
the parameter MED% is
‚hidden‘.
Adjustment range: 20 ... 70
Factory setting: 45