Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02
37
6.8.3 Connecting up the electric immersion heater
The Vaillant auroSTOR VIH S GB 210/2 S,
VIH S GB 260/2 S, and VIH S GB 310/2 S solar cylinders
are fitted with an electric immersion heater at the fac-
tory.
1
2
3
4
5
5
4
2
3
1
Fig. 6.14 Electrical connection of electric immersion heater
Key
1 Protective earth terminal (PE)
2 Cable
grip
3 Electric immersion heater
4 Neutral conductor terminal (N)
5 Outer conductor terminal (L)
e
Danger!
Risk of death from electric shock!
Without potential equalisation, life-threat-
ening voltage can reach the piping and
water draw-off points.
>
Earth the electric immersion heater.
>
Remove the front cladding of the casing (
5
¬ fig. 6.11
)
from the cylinder.
>
Dismantle the casing to facilitate work on the compo-
nents.
>
Dismantle the electric immersion heater cover.
>
Install a separate electrical power supply for the electric
immersion heater in accordance with current IEE regula-
tions (BS 7671).
– Use heat-resistant cables (H05BN4-F 1.5 mm
2
, 3-wire
HOFR-coated) for the cabling of the electric immer-
sion heater.
– Use the cable grip (
2
) to firmly secure the supply
cable of the immersion heater.
– Connect the electric immersion heater to the power
mains via a double pole isolating switch with a contact
separation of at least 3 mm in both poles.
– Protect the circuit using a 16 A fuse.
a
Caution!
Corrosion and short circuits may occur
due to incorrect earthing.
If you insert a electric immersion heater
into the cylinder, the external voltage may
build up electrical potential in the water
which may result in the electrochemical
corrosion of the electric immersion heater.
>
Ensure that both the hot water and cold
water pipes are connected to the earth
line by means of an earth cable directly
on the cylinder.
>
You must also make sure that the elec-
tric immersion heater is connected to the
earth line via the earthing terminal.
>
Mount the cover for the electric immersion heater.
i
Only switch the immersion heater on once
the cylinder is completely full.
With the isolating switch, the electric immersion heater
can be switched on if the primary heating device has
malfunctioned.
Installation 6
