7
Adjustment parameters for DS-matic power units
BASIC ADJUSTMENT PARAMETERS FOR DS-MATIC POWER UNITS
Display Function Range Options
TSA
Hot water tank setpoint temperature with
solar energy input.
2…95ºC
Adjustment: 60ºC
ADVANCED ADJUSTMENT PARAMETERS FOR DS-MATIC POWER UNITS
Display Function Range Options
HNS
Solar pump operating mode (relay 1
and 2).
0…3
Adjustment: 0
0: Pumps in automatic mode.
1: Pumps always off.
2: Pumps always on.
3: Pumps activated at the speed set
in parameter “RVB”.
TSA
Hot water tank setpoint temperature
with solar energy input.
2…95ºC
Adjustment: 60ºC
DTO
Switch-on temperature difference.
DTF+1…21ºC
Adjustment: 6K
The temperature difference
between the solar collector and the
hot water tank must exceed this
value for the solar pumps to start up
automatically.
DTF
Switch-off temperature difference.
1…DT0-1ºC
Adjustment: 4K
When the temperature difference
between the solar collector and the
hot water tank is below this value
and the pumps are running
automatically, the solar heating
circuit pumps switch off.
TCL
Minimum temperature of solar
collector.
-10…90ºC
Adjustment: 10ºC
The temperature of the solar
collector must exceed this value for
the solar pumps to start up
automatically.
TDB
Upper pump switch-off time.
OFF, 5…30min
Adjustment: 15min
When this time elapses with the two
solar pumps running in automatic
mode, the PWM signal is set as
defined in the parameter “RVB”.
RVB
Speed regulation of the solar pump.
15…100%
Units: 1%
Adjustment: 70%
Percentage of pump operation for
the correct regulation of the flow.
FEC
Solar collectors cooling
0…1
Adjustment: 0
0: Function off.
1:
If the collector temperature raises
to 140 ºC, the solar pumps remain
activated until collector
temperature is less than 90 ºC. If the
store temperature is higher than
hot water tank setpoint
temperature (TSA) and the collector
temperature is lower by 5 ºC than
the store temperature, the solar
system remains activated until the
store is again cooled down by the
hot water tank setpoint.