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Beschikbare talen
Beschikbare talen
If the level in the tank is the same as or higher than SP, the pump P1 is started and, if the level continues to rise, pump P2 is also
started after a delay of 4 seconds.
When level DP is reached, both pumps stop.
The following table sums up the behaviour described:
P1
P2
Pump P1 = started for at least 4 seconds and tank => SP
Maximum Alarm
P2 = ON
P1 = ON
P1 + P2 = OFF
Minimum Alarm
8
KIWA PRESSURE BOOSTING FUNCTION
The Ebox panel can be used for making a system to increase water pressure that respects the KIWA standard. This mode is available
only if the language chosen is French, Dutch or English. As control inputs, either pressure switches on a pressure sensor can be used.
A pressure switch for low pressure must be used to put at the intake of the set.
8.1
Expansion vessel
In KIWA pressure boosting it is necessary to use an expansion vessel of at least 19 litres per pump.
8.2
Electrical connections of pump and supply
Connect the supply line and the pumps as described in chapter 2.1.
8.3
Connection of additional protections: high pressure and motor thermal protection
It is possible, but not necessary, to use the alarm inputs to the Ebox so that the pumps stop in the case of pressure that is too high or
too high motor temperature. In the case of an alarm, the pumps stop, the alarm leds blink, the corresponding alarm outputs are
activated. If the display is present, the type of alarm is indicated. When the alarm conditions no longer exist, the Ebox resumes normal
operation.
Alarm, Pressure in system too high: the pressure switch must be installed in the delivery of the set. The normally closed
•
contact of the pressure switch must be connected to terminal R of the Ebox. The pressure switch must be set at the maximum
pressure that can be reached by the system in safe conditions. If it is not used, the contact is jumpered.
Drainage with depth sensor, without display
STARTING
Tank level >=> SP
Table 10: Drainage with depth sensor, without display
ML
HC
HB
HA
LL
Figure 43: Drainage with a depth sensor
Ebox with display
ENGLISH
SP
DP
Ebox without display
93
STOPPING
Tank level = DP
Tank level = DP
P1 + P2 = ON
P1 + P2 = OFF
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