6 Start-up
10
Installation instructions electronicVED 0020264435_00
5.2.3
Installing an optional load-shedding relay
If required, a load-shedding relay that conforms with current
standards can be connected to the product. The role of the
relay is to switch off other power consumers while hot water
is being drawn off via the product so that the house installa-
tion is not overloaded. The load-shedding relay must fulfil the
following criteria:
–
Pull-in current < 15 A
–
Continuous current > 50 A
▶
Install the load-shedding relay in the L2 outer conductor.
▶
If the product is a replacement product, also replace the
load-shedding relay.
6
Start-up
6.1
Removing air pockets from the product
Caution.
Risk of damage from heating wire dry fire
If the air pockets have not been removed
from the product before it is started up, there
is a risk of heating wire dry fire and damage
to the product.
▶
Disconnect all supply lines from the power
supply.
▶
Secure the product against being uninten-
tionally switched back on again.
▶
Check that there is no voltage in the sup-
ply lines and connections.
▶
Check that the product is de-energised.
1.
Open the cold water stop valve in the cold water pipe.
2.
Open the hot water stop valve for at least one minute.
3.
Close and open the hot water draw-off valve several
times.
Note
In normal operating mode, the product will
not need to be purged again.
1
4.
Press the safety switch
(1)
.
6.2
Fitting the product casing
X9
2
1
3
4
If the cable for the temperature selector is not plugged into
the electronics, the electronics cannot regulate the power.
The outlet temperature is 30 °C.
▶
Plug the cable
(4)
for the temperature selector into
slot X9 in the electronics.
▶
Put the product casing
(1)
on.
▶
Tighten the two screws
(3)
.
▶
Grip the panel
(2)
using the two straps.
▶
Splay the two straps (slightly pull the panel apart).
▶
Put the panel
(2)
on.
▶
Close the hot water draw-off valve.
▶
Connect the product to the power mains (switch on the
fuse).
