Alfa Laval AquaFirst
Installation, service and operating instruction
24
7.4
S1 Menu Secondary Outlet
Parameter
Factory
Default
Setting
Optional setting
Description
SP_T_Sec_Outlet
60°C
DHW Setpoint
Change setpoint value in clock program
Delta T S1 HiAlm
10°C
0-50
High Temperature Alarm if Ts1
SP_T_SecDelta Ts1 HiAlm
High T Alarm Delay
1 min
0-30
High temp alarm is effective after this
temporisation
High Alarm Auto Reset
0
0/1
0=MANUAL alarm clear /
1=AUTO alarm clear
High_Alm_Reset
Off
Off/On
Put ON to clear an high temp alarm,
then put Off
P_Band AquaFirst
40
0<P<200°C
P to be less reactive
(-200 to 200)
Negative values
in cooling
P to be more reactive (be careful of
"pumping" effect)
I_Time AquaFirst
15
0-200 sec
P to be less reactive
P to be more reactive (be careful of
"pumping" effect)
D_Time AquaFirst
2 sec
0-200 sec
P_Band AquaEff
80
0<P<200°C
N/A
(-200 to 200)
Negative values
in cooling
I_Time AquaFirst
15
0-200 sec
N/A
D_Time AquaFirst
2 sec
0-200 sec
N/A
7.5
Thermal Treatment Menu
The function Thermal Treatment is disabled by default.
Activate it by setting TrTh_Activated to ON.
The clock program logically activates it automatically or not.
The thermal treatment starts when the thermal treatment is switch on inside the clock program, and ends at the
end of the thermal treatment duration (ThermTr Duration) or at the end of the authorized period, when thermal
treatment is OFF in the clock program.
The user has to define a one (1) sensor mode - fixed duration as per Therm.Tr duration parameter.
Parameter
Factory Default
Setting
Optional setting
Description
ThTr_Setpoint
70°C
Usual value
ThTr_Activated
Off
Off/On
Define the thermal treatment authorized
period
Sensor_Nbr
NS 0=Auto/1/2S
1
Auto/1 sensor/2
sensors
Use 1 sensor (set on 1)
ThTr Duration
1 min
1-240 min
(4 hours max)
Adjust value according to the instal
buffer vessel capacity
Fixed duration (1 sensor)
1
0/1
Set to 1
TT Max try time
1 min
1-240 min
(4 hours max)
Not used
DeltaT S1S2 ThTr
7°C
1 - 20°C
Not used
Inhibition time
30 min
0-180
(0 à 3 hours)
High temp alarm inhibition time after
thermal treatment