Installation Instructions; Unit Installation - STIEBEL ELTRON SNU 5 SL antitropf comfort Operating And Installation Instructions

2. Installation Instructions

Installation and electrical connection may
only be carried out by an engineer in ac-
cordance with these instructions.
2.1 Unit Type A
1 Temperature selection knob
2 Indicator light
3 Cold water connection (blue)
3a Filter in cold water connection (integral)
4 Hot water connection (red)
5 Electrical connection line
6 Suspension rail
7 Protective pipe for protected temperature
restrictor with reset function
8 Protective pipe for thermostat
9 Rating plate
2.2 Description of Unit
Open (pressureless) water heater for under-
sink fitting, to supply a water tap, for heating
cold water to EN 806.
Only fittings for open (pressureless) water
heaters may be installed.
We recommend Stiebel Eltron fittings: for or-
der no. see 1.7 „Special accessories".
2.3 Technical Data
Current data on the rating plate.
Type
Nominal capacity
Design
Weight
„antitropf" - function
„thermostop" - function
Heating power
Voltage
Flow rate, max.
Protection to EN 60529
Connection line with plug
Temperature setting range
(fully adjustable)
Table 1
2.4 Regulations and Conditions
• Perfect function and operating safety can
only be guaranteed with the original
Stiebel Eltron accessories and spare parts
designed for the unit.
• The fitting outlet serves for ventilation. Do
not block the outlet connector or fitting
swivel arm. Do not use a perlator or hose
with jet regulator.
• Electrical connection
Installation with direct (fixed) electrical
lines is not permitted.
– Connection with plug and socket:
An earthed socket is required for connec-
tion of the unit which must remain freely
accessible after installation of the unit.
Using country-specific plugs and sockets,
these must be equipped with earth-termi-
nals and must correspond to the national
regulations.
for the engineer
– Direct-connection:
If the unit is permanently connected to
the AC network (unit connection socket), it
must be able to be isolated from the net-
work via a separation gap of at least 3 mm
in all poles.
• The conditions of the local electricity sup-
ply company and competent water supply
authority must be observed.
2.5 Important Notes
If this unit is exposed to water pres-
sure, the container may leak and
cause water damage.
If the water connections on the unit are
transposed, the unit will not function and the
components may be damaged.
2.6 Installation Site
The heater should be installed in a frost-free
room, vertically with water connections at the
top.

2.7 Unit Installation

• Mount the suspension rail, position using
mounting template pages 18 and 19. Select
fixing materials according to the strength of
SNU 5 SL
the wall.
Excess line length can be stored in the cable
SNU 5 SLi
holder provided.
5 l
• Suspend the unit.
open
• Fit the water connections, set the flow rate
3.0 kg
(max. 5 l/min, see Description of Fitting).
present
The colour marking of the fitting connec-
present
tions and heater must be allocated as fol-
see unit
lows:
rating plate
right blue
230 V
left red
5 l/min
IP 24 D
2.8 First Use
approx.
(By the engineer only!)
650 mm
I. Open the hot water fitting or set the one-
approx.
hand mixer to "warm" until the water
35 °C - 85 °C
emerges free from bubbles.
II. Connect the electrical plug and select the
temperature.
Danger of running dry!
If the sequence is changed, the pro-
tective temperature restrictor will trip in.
In this case, add water and isolate the unit
from the power supply briefly to reset the
running dry protection.
III. Temperature setting restrictor G :
Only if the restricted temperature setting
is required is the max. temperature set
via the restrictor ring. To do this, pull off
the thermostat knob and restrictor ring.
Set the restrictor ring to the desired max.
setting and push the thermostat knob
back on.
IV. Remove protective film from controls.
Note:
On the first heating cycle, expansion water
may drip from the fitting outlet.
B
C
= cold water connection (3)
= hot water connection (4).
D
Unit hand-over:
Explain to the user how the unit works and
how to operate it. Point out any possible dan-
gers (scalding). Give him these Installation
and Operating Instructions for safe keeping.
2.9 Service Notes
• Open unit H :
a Pull off thermostat and temperature res-
trictor ring. Remove screw.
b Lower locking bolt
c Swivel housing cover aside and remove.
• Replace electrical power line:
To replace the connecting line use Stiebel
Eltron part no. 02 06 71 (5, for order no. see
1.7 „Special Accessories"), or an H05VV-F3x1.0
line. Lay the connecting line in the guide H !
Circuit diagram E
• Positioning of thermostat sensor in protec-
tive pipe:
When replacing or removing the thermostat,
insert the sensor 185 mm into the protective
pipe F and attach below the earth plug.
• Drain unit:
The unit is drained via the connector. Turn the
heater and shake briefly until water emerges.
• Descaling:
Remove heating flange, remove coarse scale
by careful tapping, immerse heating element
in limescale remover up to the flange plate.
• Clean filter:
Unscrew cold water connection (3).
Remove filter H (3a) from the cold water con-
nection using pliers and descale, if necessary
replace filter (for order no. see 1.7 „Special
Accessories").
• Checking earth conductor:
Disconnect the plug and remove the thermos-
tat. Test at the thermostat fixing screw and
earth contact of the connection line.
9