Standard Installation; For The Qualified Installer - STIEBEL ELTRON DEL 24 SLi Gebrauchs- Und Montageanweisung

3. Standard installation

Electro: UP – bottom; Water: UP
Legend Diagram A - G
1 User interface
2 Equipment cap
3 Base, back wall
4 DHW compression fitting
5 Cold water compression fitting
(three-way shut-off valve)
6 Cable grommet (electrical supply cable
from below)
7 Mains terminal
8 Top, back wall
9 Electronics
10 Safety pressure limiter (AE 3) with reset
button
11 Heating system
12 Flow sensor (DFE)
13 Plug position of thermostat fly lead cable
14 LED for operating and fault display
15 Fixing bar
16 Plug of thermostat fly lead cable
17 Safety thermal cut-out (STB)
18 Outlet sensor (NTC)
19 Locating hook for mounting rack (Service)
20 Unit rating plate
21 Hanging bracket
22 Filter in cold water screw connection
23 Flow rate limiter (DMB)
24 Form disc
3.1 General installation
information
The equipment is prepared at the fac-
tory for standard installation (see figs.
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 DEL... SLi 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 equipment D :
a Pull the flap forward.
b Open the flap downwards.
c Release the fixing screws.
d 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 (15).
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).
16
for the qualified installer
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 bracket.
• Fit the equipment, secure the fixing toggle
(15).
3.7 Water connection
Important instructions:
Thoroughly flush cold water supply
line!
The filter supplied (22) must always be
fitted with the flow rate limiter (23, DMB)
or the form disc (24) (parts in the bag on
the CW connection and in the accompa-
nying pack) in the CW screw connection.
Generally the DMB - 12 l/min (brown) is to
be installed.
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".
2 Activate the safety pressure limi-
ter. The DEL...SLi electronic LCD is
supplied with the safety pressure limi-
ter (AE 3) in a 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 Check the instantaneous water
heater function.
7 Remove the protective film from
the user interface.
Equipment handover
Explain the equipment function to the user
and familiarise the user with its operation.
Important information:
• Make the user aware of possible dangers
(scalding).
• Hand over these instructions to the user
for safekeeping.
Exception:
– DMB - 7.5 l/min (blue) for use with a
thermostatic fitting.
– Form disc for low water pipe pressure.
Upon replacement installation the pres-
ence of the filter must be checked.
Never use the three-way shut-off valve (5)
to reduce the flow rate.
F
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-
G
proof) can only be ensured with a cor-
rectly fitted cable grommet A (6) and seal
on the cable bush.
Connect the equipment to earth.
3.9 Completing the installa-
tion
1. Open the three-way shut-off valve G (5).
2. Fit the back wall base E .
1
on
3
4
5
on
2