en
Put into operation
14
WILO SE 2017-03
Fig. 21:
Assemble the plug
11. Insert the plug and fasten with screw.
12. Restore power supply.
7
Put into operation
7.1
Venting
1. Charge the system appropriately and ventilate.
▶ The pump is self-ventilating.
7.2
Flush
1. Flush unit before commissioning.
2. Remove pump before change in pressure flushes.
3. Do not perform any chemical flushes.
7.3
Select operating mode
Fig. 22:
Select operating mode
Operating
mode
System type
System properties
Differential
pressure
variable
Δp-v
Domestic hot
water circulation
systems
Domestic hot water circulation
systems with thermostatically
controlled line shut-off valves
Operating
mode
System type
System properties
Constant
speed (c1,
c2, c3)
Domestic hot
water circulation
systems
Constant flow rate
Constant
differential
pressure
Δp-c
Domestic hot
water circulation
systems
Domestic hot water circulation
systems with thermostatically
controlled line shut-off valves.
▪ The differential pres-
sure is kept constant
at the differential
pressure setpoint H.
Recommended for systems
with balancing valves
7.4
Adjust operating mode and pump output
Factory setting
The pumps are delivered in control mode Δp-c. The re-
quired delivery head is preset according to pump type
at between ½ and ¾ of the maximal required delivery
head (see pump data in the catalogue). Adjust operat-
ing mode and pump output according to system re-
quirements.
Adjust the settings
In the design the unit is configured for a certain duty
point (total resistance of the drinking water pipe net-
work). When commissioning, adjust the pump output
(delivery head) to the corresponding duty point. Select
the alternative operating mode with constant speed.
1. Adjust desired operating mode with operating button.
▶ The LED display shows the operating mode (c1, c2, c3)
or the setpoint in m (at Δp-c, Δp-v).
1. Adjust the setpoint by turning the operating button
(only at Δp-c, Δp-v).
8
Troubleshooting
8.1
Personnel requisition
The troubleshooting must only be performed by a qual-
ified specialist, work on the electrical connection must
only be performed by a qualified electrician.
8.2
Safety during troubleshooting
DANGER
Risk of fatal injury!
Danger to life due to touch voltage after switching
off the pump.
