Standard Installation; For Contractors; Electrical Connection; Place Of Installation - STIEBEL ELTRON DHB-E 18 Si Operating And Installation Instructions

3. Standard installation

Electrical: unfi nished walls – from below; water: unfi nished walls
3.1 General installation infor-
mation
The equipment is prepared at the fac-
tory for standard installation (see fi gs.
C - I ):
• Installation above a worktop C (a).
• Water connection, unfinished walls, com-
pression fitting G (4 and 5).
• Electrical connection, unfinished walls, in
the lower equipment area F (6).

3.2 Place of installation

Install the DHE vertically in accordance with
C (a – above or b – below worktop) in a
room free from the risk of frost.
3.3 Equipment preparation
for installation
• Open the appliance D :
a Open the flap downwards.
b Release the fixing screws.
c Remove the equipment cap.
• Remove the back wall base E :
a Press down both snap-in tabs.
b Remove the back wall base by pulling
forwards.
• Remove the fixing toggle F (13) .
3.4 Securing the mounting
bracket
F
• Mark out the fixing holes for the moun-
ting bracket using the installation template
supplied.
• Secure the mounting bracket with 2
screws and rawl plugs (not supplied;
selection subject to the material of the
relevant wall).
3.5 Trimming the power
cable to size
Trim the power cable to size in accordance
with H .
Note:
Cap (a) should be used as an aid for installing
the power cable.
3.6 Equipment installation
• Route the power cable through the cable
grommet (6) and press the back wall over
the threaded studs of the mounting bra-
cket.
• Fit the equipment, secure the fixing toggle
(14).
3.7 Water connection
Important information:
Thoroughly fl ush the cold-water sup-
ply pipe.
Always incorporate the strainer supplied
(19, bag on the cold-water fi tting) into
the cold-water compression fi tting. When
replacing the installation, check that the
strainer is in place.
8

for contractors

If the correct function cannot be assured
because the fl ow pressure is too low, e.g.
< 0.2 Mpa (< 2 bar), replace the fl ow li-
miter (20) with the washer supplied (21);
if necessary, increase the water supply
pressure.
Please note:
Never replace the fl ow limiter (20) with
the washer (21) when using a thermo-
static valve.
Never use the three-way shut-off valve (5)
to reduce the fl ow rate.
3.9 Completing the installa-
tion
1. Open the three-way shut-off valve G (5).
2. Fit the back wall base E (3).
3.10 Initial start-up
(only by a qualified contractor)
1
Fill and vent the equipment.
Please note: risk of running dry!
Open and close all connected draw-off
valves several times, until the air has
been purged from the pipework and
the equipment, see "2.2 Important
information".
Activate the safety pressure
2
limiter AP 3.
is supplied with the safety pressure
limiter in tripped state (press the reset
button).
3 Push set value transducer cable
plug onto the PCB.
4 Fit the equipment cap and secure
with the screw.
5 Switch on the mains power.
6
Turn the temperature selector
clockwise and anti-clockwise, to
F
calibrate the set value transducer.
6 Check the instantaneous water
heater function.
8 Remove the protective fi lm from
the user interface.
Possible displays by the LED "traffi c
light" indicators ( A 10, see also "7. Trou-
G
bleshooting"):
red
yellow
green
Equipment handover
Explain the equipment function to the user
and familiarise the user with its operation.
The DHB-E electronic
illuminates in case of faults
illuminates when heater is on
fl ashing: power on

3.8 Electrical connection

Connect the electrical supply cable to the ter-
minal strip (see Wiring diagram I ).
Important information:
The protection level IP 25 (hose-
proof) can only be ensured with a cor-
rectly fi tted cable grommet A (6) and seal
on the cable bush.
Connect the equipment to earth.
• Electrical connection with power cable
> 6 mm²:
– Enlarge the hole in the cable grommet
F (6).
– power cable 16 mm² - from below:
Remove the webs and secure the mains
terminals with a screw K1 .
Important information:
• Make the user aware of possible dangers
(scalding).
• Hand over these instructions to the user
for safekeeping.
1
2
4
5
6
1.
3
°C °C
electro electro
nic nic
2.