Riello SUN 1 PLUS 2 RS, Руководство по установке, Страница: 25 / 40

25
19.19 Option: remaining monitoring time
CDIS : Remaining monitoring time
Display range: 0 ... 30:0 ... 24 (dd:hh)
Once values have been entered for parameters PDIS , TDIS and
DDIS , the time remaining to the end of monitoring is displayed
in the CDIS parameter.
If this period finishes, but a disinfection activation delay has
been set, the SDIS parameter flashes and shows the time re-
maining to activation. On completion of the disinfection cycle,
parameters DDIS and SDIS are hidden and only CDIS remains vis-
ible.
During the CDIS period, if storage cylinder top temperature stays
above TDIS for the time DDIS , the value of CDIS is reset equal to
the entire period PDIS
19.20 Minimum speed
nMN : Minimum speed
Setting range: (10) 30 ... 100 %
Default setting: 30 %
nMN if ODB activated: 50 %
Thermal energy metering can be implemented in two ways:
with a fixed flow rate or with a Grundfos Direct Sensor™ VFD.
9
Note! If devices with no speed control (e.g. valves) are con-
nected, minimum relay speed must be set at 100 %.
nMX : Maximum speed
Setting range: (10) 30 ... 100 %
Default setting: 100 %
The nMX parameter lets you set a maximum speed for the pump.
9
Note! If electrical equipment with no speed control (e.g.
valves) is used, set the relay speed to 100 % or set the pump
control to OnOF to deactivate speed control.
19.21 Grundfos Direct Sensor™ activation
GFD : Grundfos Direct Sensor™ activation
Selection: OFF, 12, 40, 40F
Default setting: OFF
Activation of a digital sensor to measure flow rate and meter
thermal energy.
OFF no Grundfos Direct Sensor™
12 VFD 1 - 12 (only in water/propylene glycol mixes)
40 VFD 2-40
40F VFD 2-40 Fast (only in water)
19.22 Thermal energy metering
OHQM : Thermal energy metering
Setting range: ON, OFF
Default setting: OFF
When the OHQM function is activated, the quantity of heat pro-
duced can be calculated and displayed. Thermal energy meter-
ing OHQM can be implemented in two ways: with a fixed flow
rate or with a Grundfos Direct Sensor™ VFD.
19.23 Thermal energy metering with fixed flow rate
Thermal energy metering can be implemented with the aid of
a flow meter. To implement thermal energy metering, proceed
as follows:
− Set the flow rate shown by the flow meter in parameter
FMAX when the pump is running at maximum speed
− Specify the desired heat transfer medium and percentage
of anti-freeze in the parameters MEDT and MED%