STIEBEL ELTRON AQ 35 E-2 User manual

This shower water heater must be installed (water and electrical installation),
commissioned and serviced by approved service technicians in
accordance with these instructions.

English
Instantaneous shower water heater - Operation and installation instructions


AQ 35 E - 2 / 45 E - 2

STIEBEL ELTRON
2
General information

General information
The chapter Operation is intended for
users and qualified installers.
The chapter Installation is intended for
qualified installers.
Read these instructions
carefully before using the
appliance and retain them for future
reference. If the appliance is passed
on to a third party please hand these
instructions to the new user.
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.
Cleaning and user
maintenance shall not be
made by children without
supervision.











 
















STIEBEL ELTRON 3
General information

This appliance incorporates an
earth connection for functional
purposes only.
Fit only shower heads recom-
mended by the manufacturer
and never fit any additional device to
restrict the water outlet flow.
The spray head must be descaled
regularly.
The outlet must not be connected
to any tap or fitting other than
those specified.
The water inlet of this appliance
shall not be connected to inlet
water obtained from any other water
heating system.
This appliance is not to be used
for a potable water supply.
A disconnecting device having
a contact separation of at least
3mm in all poles must be incorpo-
rated in the fixed wiring in accor-
dance with the wiring rules.
New hose-sets supplied with the
appliance are to be used and
old hose-sets should not be reused.





















 

 


 


STIEBEL ELTRON
4
Content

English
1. Operation instruction ............................................................................................................................................. 5
1.1 Description of the unit ....................................................................................................................................... 5
1.2 The essentials - in brief ........................................................................................................................................ 6
1.3 Important information ............. ......................................................................................................................... 6
1.4 Care and Maintenance ........................................................................................................................................ 7
1.5 Hot water capacity ............................................................................................................................................... 7
1.6 Technical data ....................................................................................................................................................... 7
1.7 Regulations and provisions .............................................................................................................................. 8
1.8 Important note ...................................................................................................................................................... 8
1.9 Installation location ............................................................................................................................................. 8
1.10 First operation ..................................................................................................................................................... 8
1.11 Service note .......................................................................................................................................................... 8
2. Guarantee ..................................................................................................................................................................... 9
3. Fault elimination for the user ............................................................................................................................. 9
4. Installation instruction .......................................................................................................................................... 10
4.1 Detailed description ............................................................................................................................................ 12
4.2 Installing the unit .................................................................................................................................................. 13

 14
  14
  15
  15
  16
  16
  17
  18
  18
  18
  18
  18
 19
 19
 20
  21
  22

STIEBEL ELTRON 5
1. Operation Instruction for the user and the qualied installer
1. Operation and installation
instruction
1.1 Description of the unit.
The AQ pressureless(open) small
instantaneous water heater is a device
for heating water for a shower. Any
desired temperature can be set on the
unit. The electrical power is electronically
controlled. The flow is switched on and
off by using the cold water valve.
The unit switches the power on
once the flow volume is sufficient.
The “Power” light (B) indicates the
unit is switched on.
The unit is fitted with a overheating
protection device.
This appliance is designed for
domestic use. It can be used safely by
untrained. The appliance can also be
used in a non-domestic environment,
e.g. in a small business,as long as it is
used in the same way.
Warning Injury
The appliance may be used by
children aged 8 and up and persons
with reduced physical, sensory or
mental capabilities or a lack of experience
provided that they are supervised or
they have been instructed on how to
use the appliance safely and have
understood the resulting risks. Children
must never play with the appliance.
Children must never clean the appliance
or perform user maintenance unless
they are supervised.

STIEBEL ELTRON
6
1. Operation Instruction for the user and the qualied installer
1.2 The essentials - in brief
A. Rotary control for temperature
adjustment
B. “Power” light
C. Shower accessories
B
A
C
1.3 Important information
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.
Shower head must not be higher than the unit.
Fig. 1
The unit is optionally equipped
with an ELSD (Type AQ...E - 2
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 fix 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.

STIEBEL ELTRON 7
1. Operation Instruction for the user and the qualied installer
1.4 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 qualified
installer.
1.5 Hot water capacity
The hot water capacity depends on the
power of the unit, the cold water tempera-
ture, and the flow volume.
Thermostat cut-off is a service
case only for qualified technician
1.6 Technical Data
Type AQ 35 E - 2 AQ 45 E - 2
Nominal capacity l 0.18
Design Open
Minimum inlet water pressure MPa(bar)
0.015(0.15)
Maximum inlet water pressure MPa(bar)
0.5(5.0)
Water connection G½” (External Thread)
Dimension (H x W x D) mm 360 x 200 x 110
Weight kg 1.2
Electrical connection 1/N/PE/AC 220...240 V.
Recommended circuit breaker A 20 25
Recommended cable size Sqmm. 2.5 - 4 2.5 - 4
Rated Power (kW) Rated current (A)
220 V
230 V
240 V
kW - A
3.5 - 15.9
3.8 - 16.5
4.2 - 17.5
kW - A
4.5 - 20.5
4.9 - 21.3
5.4 - 22.5
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
8
1. Operation Instruction for the user and the qualied installer
1.7 Regulations and Provisions
- Regulations of the local power supply
authority should be observed.
- Regulations of the water supply
authority should observed
- Technical data.
- Install the unit flush with the wall.
- Electrical connection to be secure.
The unit must be earthed
(see circuit diagram). To protect
against water penetration, the cable
seal (Fig. 8 No.2) must be used.
1.8 Important note
All the information in these
operating and Installation
Instructions must be carefully followed.
These instructions provide important
details regarding the safety, operation,
installation, and maintenance of the unit.
1.9 Installation location
The shower unit is to be installed
in a closed, frost-free room (discon-
nected units are to be stored in a frost-
free location, since there will always be
some water left in the unit). The AQ is to
be installed vertically on a wall (hot water
connection downwards).
1.10 First operation (Only to be carried
out by a qualified installer)
Before switching on, set the rotary
water valve to “Max” setting until
the pipework and the unit are free of air.
- Before switching “ON”, set the rotary
temperature control to “OFF”
- Check the operation of the water
heater.
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.
1.11 Service note
When carrying out any work,
isolate the unit from the mains
and shut off the water connection.
- Clean the filter
Disconnect water valve remove filter
(Fig. 8 No.14) and clean.
Re-assemble in reverse order.

STIEBEL ELTRON 9
For guarantees please refer to the
respective terms and conditions of
supply for your country.
The installation, electrical
connection and first operation
of this appliance should be carried
out by a qualified installer.
The company does not
accept liability for any failure
caused by improper installation and /
or unauthorized installers.
Any other use beyond that described
shall be deemed inappropriate. Obser-
vation of these instructions and of
instructions for any accessories used is
also part of correct use of this appliance.
2. Guarantee
3. Fault elimination for user
Fault Cause Rectification
No hot water despite flow
volume setting at right-hand
stop.
The water flow 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 flow volume.
- Press “Reset”button.
The unit is not being switched
on. Electricity supply and flow
available.
The water flow 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 filter after
shutting off the cold
water intake.
- Increase mains
pressure

STIEBEL ELTRON
10
4. Installation Instruction for the qualied installer
min. 4.5 mm
max. 5.5 mm
4 x 35 mm
6 mm
4 x 35 mm
6 mm
mm6
115 mm
50 mm
12
10
13
65 mm
50 mm
100 mm
200 mm
264 mm
270 mm
360 mm
59 mm 280 mm
35 mm
110 mm
G 1/2
12 mm
9 mm
8
9
Fig. 2 Fig. 4
Fig. 3 Fig. 5
Dimension Wall Mounting
Using the installation template to drill the holes Cable

STIEBEL ELTRON 11
4. Installation Instruction for the qualied installer
11
a
a
b
b
c
c
d
d
a - Heating Element
b - Electronic control set
c - ELSD Circuit
d - Triac Set
e - Thermostat
f - Button Board
g - Current Leakage Sensor
a - Heating Element
b - Electronic control set
c - Triac Set
d - Thermostat
g
f
e
Type AQ...E - 2 Type AQ... - 2
Fig. 6
Fig. 7
Release cover securing screw
Wiring diagram

STIEBEL ELTRON
12
4. Installation Instruction for the qualied installer
4.1 Detailed description
1. Thermostat
2. Cable duct for electrical connection
3. Power light
4. Rotary control for temperature
adjustment
5. Hot water connection for
shower hose
6. Cold water connection
7. Position for electrical connection
8. Lower fixing hole (Fig. 2)
9. Upper fixing hole (Fig. 2)
10.Connection cable (Fig. 5)
11.Cover securing screw (Fig. 6)
12. Depth for mounting screw (Fig. 3)
13.Rear wall installation (Fig. 4)
14.Combination filter/seal
15.ELSD (option)
Fig. 8
1 2
3
4
56
7
14
15
Description of the unit (Internal)

STIEBEL ELTRON 13
4. Installation Instruction for the qualied installer
4.2 Installing the unit
1. Release cover securing screw
(Fig. 6 No.11).
2. Remove cover.
3. Determine the position of the
drill holes and drill the holes.
Insert the wall plugs and screw
in the screws (ensure screw
insertion depth is correct, Fig. 3
No.12).
4. Feed the connection cable
through the cable seal (Fig 8 No.
2) in the rear wall. Guide the
unit over the wall securing
screws and slide it downwards
(Fig.4 No.13).
5. Fit a secure connection cable
(Fig. 5 No. 10 ensure dimensions
are correct).
6. Fit the cold water connection.
Connect the water valve with
the filter (Fig. 8 No.14) and the
washer to the cold water inlet
of the unit (Fig.8 No. 6).
7. Straighten the unit and tighten
the screws.
8. Connect the electrical supply.
9. Fit the cover and secure with
the screw.
10.Turn the rotary control (Fig.1-A)
to the left and right (internal
setting lever will engage).
11.Fit the shower accessories to the
unit.
12.Flush the cold water pipe
thoroughly.
The outlet must not be
connected to any tap or fitting
other than those specified.

STIEBEL ELTRON
14
 
 
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











STIEBEL ELTRON 15

 

 
 
 







B
A
C

STIEBEL ELTRON
16


















 





 
 


STIEBEL ELTRON 17


  
 
 
 
 
 G½
 
 
 
  
  

















STIEBEL ELTRON
18

 
 
  
 
  
 
 
 



 




 






























STIEBEL ELTRON 19












  

























STIEBEL ELTRON
20
min. 4.5 mm
max. 5.5 mm
4 x 35 mm
6 mm
4 x 35 mm
6 mm
mm6
115 mm
50 mm
12
10
13
65 mm
50 mm
100 mm
200 mm
264 mm
270 mm
360 mm
59 mm 280 mm
35 mm
110 mm
G 1/2
12 mm
9 mm
8
9
 
 

 
 