STIEBEL ELTRON IS 5-1 E, IS 5-2 E, IS 7-2 E Operation And Installation Instructions Manual

IS 5-1 E / 5-2 E / 7-2 E

English

Instantaneous shower water heater - Operation and installation instructions

Español

Calentador de ducha instantáneo – Instrucciones de instalación y uso

This water heater must be installed (water and electrical installation),
commissioned and serviced by approved service technicians in
accordance with these instructions.

Este calentador de agua debe ser instalado (instalación eléctrica y de agua),
revisado y puesto en servicio por técnicos certicados de acuerdo a estas
instrucciones.

English

1. Operating Instruction for the user and the qualied installer

1.1 Description of the unit

The Stiebel Eltron IS pressureless
(open) instantaneous water heater is
a device for heating water for shower.
The electrical power is electronically
controlled. The unit switches the
power on once the ow volume
reach 1.5-2 l/min.

The “Power” light (C) indicates
that the unit is switched on. If the
temperature adjustment rotary
(B) switch is turned to the left, it is
possible to take a cold shower (the
heating will not be switched on).

The IS is tted with an overheating
protection device. In the event of
overheating the heating power will
be cut o.

Shower head level must not be higher than the unit.

This appliance is not intended
for use by persons (including
children) with reduced physical,
sensory or mental capabilities, or lack
of experience and knowledge, unless
they have been given supervision or
instruction concerning use of the
appliance by a person responsible for
their safety.

Children should be supervised
to ensure that they do not
play with the appliance.

1.2 The essentials - in brief (Fig 1)
A) Water valve
B) Rotary control for temperature
adjustment
C) “Power” light
D) Shower accessories

C

B

D

2

A

Fig 1

STIEBEL ELTRON

1. Operating Instruction for the user and the qualied installer

English

1.3 Important information

The unit is optionally equipped
with an ELSD (Type IS..E only)
It is recommended to test the ELSD
one time per month.

How to test:

Switch on the electrical supply.
Press the Test button, the Trip light
will go on. Press the Reset button.
Warning!
If the Trip light activate after
reset or if the light activate during
shower, never try to x it. Contact
your dealer for a check and repair.

Warning!

If, during a shower , the
water valve is closed, (such as
applying soap to the body), then
valve opened again, high water
temperature may occur, to avoid risk
of scalding, stay any from the shower
head discharge zone momentarily.

The unit must not be put
under pressure. The outlet
of the unit is also used as a vent. A
periodical scale removal is essential
for the function of the shower head.

1.4 Hot water capacity

The hot water capacity depends on
the power of the unit, the cold water
temperature, and the ow volume.

1.5 Technical Data

Type

IS 5-1 E IS 5-2 E IS 7-2 E

Design Open outlet

Min. inlet water pressure MPa(bar)

Max. inlet water pressure MPa(bar) 0.5(5)

0.015(0.15)

Cold water connection G½”

Electrical connection

1/N/PE/AC 115...127V 1/N/PE/AC 208...240V

Recommended circuit breaker 50 A 25 A 30 A

Recommended cable size 8 AWG 12 AWG 10 AWG

Voltage (V)
Rated Power (kW)
Rated current (A)

115 120 127

4.6 5.0 5.6

40 41.7 44

208 220 240

4.1 4.5 5.4

19.5 20.5 22.5

208 220 240

5.3 6.0 7.1

25.7 27.3 29.6

Note:

The cable sizes can only be a guiding value. Always abide by the corresponding
local standards, laws and regulations.
Stiebel Eltron cannot be held liable for any damages.

STIEBEL ELTRON

3

English

1. Operating Instruction for the user and the qualied installer

1.6 Important note

All the information in these
Operating and Installation
Instructions must be carefully
followed. These instructions provide
important details regarding the
safety, operation,
maintenance of the unit.

connected to any tab or
tting other than those specied

1.7 Regulations and Provisions

- Regulations of the local power
supply company should be
observed.

- Regulations of the water supply
company should observed

- Technical data.

- Install the unit ush with the wall

- Electrical connection to be secure.

The device must be capable
of being isolated from the
mains, for example by fuses, with an
isolating distance of at least 3.5 mm.
in all poles.

If the supply cord is damaged,
it must be replaced by the
manufacturer, its service agent or
similarly qualied persons in order to
avoid a hazard.

The unit must be earthed
(see circuit diagram). To
protect against water penetration,
the cable seal (2) must be used.

1.8 Installation location

The shower unit is to be
installed in a closed, frost-free
room (disconnected units are to be

The outlet must not be

installation, and

stored in a frost-free location, since
there will always be some water left
in the unit) The IS is to be installed
vertically on a wall (hot water
connection downwards).

1.9 First operation

(Only to be carried out by a qualied
installer)
Before switching on, set the
rotary water valve to “Max”
setting until the pipework and the
unit are free of air.

- Check the operation of the water heater.

- Before switching “ON” set the rotary
temperature to “OFF”

Handing over the unit

Explain to the user how the unit works
and familiarise him or her with its use.

.

- Advise the user about possible
hazards (high water temperature)

- Hand over these instructions, to
be kept in a safe place.

1.10 Care and Maintenance

All that is needed for the housing is a
damp cloth. Do not use any abrasive
cleaning agents or agents containing
solvents.
Maintenance work may only
be carried out by a qualied
installer.

1.11 Service note

When carrying out any work,
isolate the unit from the mains
and shut o the water connection.

- Clean the lter

Disconnect water valve (17), remove
lter (14) and clean. Re-assemble
in reverse order.

4

STIEBEL ELTRON

2. Guarantee

English

For guarantees please refer to the
respective terms and conditions of
supply for your country.

The installation, electrical
connection and rst

The company does not accept liability
for failure of any good supplied
which have not been installed and
operated in accordance with the
manufacturer’s instructions.

operation of this appliance should be
carried out by a qualied installer.

3. Fault elimination for the user

Fault Cause Rectication

No hot water despite ow volume
setting at

“Trip” - light on

The water ow volume
required for the unit to
turn on has not been
reached.

- The shower head is
blocked with
dirt or limescale.

- Flow volume too low.

- ELSD activated

- Clean shower head
or remove limescale.

- Increase ow volume.

- Press “Reset” - button.

The unit is not being switched
on. Electricity supply and ow
available.

STIEBEL ELTRON

The water ow volume
required for the unit to
turn on has not been
reached.

- Filter in the cold water
connection pipe blocked
with dirt.

- Water pressure not
enough

- Clean the lter after
shutting o the cold
water intake.

- Increase mains
pressure

5