STIEBEL ELTRON DHC 6 XG User manual

DHC 6 XG / 8 XG
English
Instantaneous water heater - Operation and installation instructions
This water heater must be installed (water and electrical installation),
commissioned and serviced by approved service technicians in
accordance with these instructions.

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General information
The chapter Operationis intended for
The chapter Installationis intended for
Read these instructions
carefully before using the
applianceand retain them for
futurereference. If the appliance
is passed on to a thirdparty please
hand these instructions to the new
user.
This appliance can be
used by children aged
from 8 years and above and
persons with reduced physi-
cal, sensory or mental capa-
bilities or lack of experience
and knowledge if they have
been given supervision or
instruction concerning use
of the appliance in a safe
way and understand the
hazards involved.
General information
Children shall not play
with the appliance.
Cleaning and user
maintenance shall not be
made by children without
supervision.

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Content
English
1. Operation instruction ............................................................................................................................................................. 4
1.1 Description of the unit ..................................................................................................................................................... 4
1.2 Using the unit ...................................................................................................................................................................... 4
1.3 Description of the unit (External) ................................................................................................................................. 5
1.4 Earth Leakage Circuit Breaker (ELCB) .......................................................................................................................... 6
1.5 First Operation .................................................................................................................................................................... 7
1.6 Technical data ..................................................................................................................................................................... 8
1.7 Regulations and Provisions ............................................................................................................................................ 9
1.8 Important notes ................................................................................................................................................................. 9
1.9 Installation location .......................................................................................................................................................... 9
1.10 Care and maintenance .................................................................................................................................................. 9
2. Guarantee .................................................................................................................................................................................. 10
3. Fault elimination for user .................................................................................................................................................. 10
4. Installation Instruction ....................................................................................................................................................... 11
4.1 Components of the unit ................................................................................................................................................ 11
4.2 Installing the unit ............................................................................................................................................................ 14

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1.1 Description of the unit.
The STIEBEL ELTRON DHC..XG is a slim,
pressurized instantaneous water
heater. The DHC...XG heats the water
The heating power is switched on
automatically in the event of the
The “Power” light indicates that the
heating system is switched on.
The input of heat into the water is
electronically controlled. Please set the
desired heat input by using the knob
on the front cover.
In addition the outlet temperature can
This appliance is designed for
domestic use. It can be used safely by
untrained persons. 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.
1. Operation Instruction
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.
Childern must never clean the appliance
or perform user maintenance unless
they are supervised.
1.2 Using the unit
1. Turn the knob to adjust the
desired temperature (Fig 1 # d).
2. Turn the hot water valve on. The
lighting indicator will show at the front
of the unit (Fig 1 # a).

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Fig 1
Description of the unit
a
b
c
d
e
f
1. Operation Instruction
1.3 Description of the unit
a) Indicator light
b) Hot water outlet pipe
c) Cold water inlet pipe
d) Temperature control knob
e) ELCB Reset button
f) ELCB Test button
Warning
For electrical heating appliances
that does not reset the unit, the mains
power supply must be disconnected
Warning
The DHC...XG water heater unit
is to be installed in a closed, frost-free
room (disconnected units are to be
stored in a frost-free location, since
there will always be some water left in
the unit) The water heater is to be
installed vertically on a wall (water
connection downwards).

STIEBEL ELTRON
It is recommended to test
the ELCB one time per month
6
Fig 2
E
F
E
F
Push
1.4 This model features an Earth
Leakage Circuit Breaker (ELCB) (Type
DHC...XG only), which should be test
a monthly.
Before using this unit, switch on the
electrical supply then press the Reset
Button (E).
How to test :
When the ELCB test button (F) is
pressed the ELCB Reset (E) Button will
drop. When the reset button (E) is
pressed the unit will be ready to
operate again.
1. Operation Instruction
Warning !
If the unit does not operate,
even pressing the Reset button (E),
contact Stiebel service for a check and
repair.

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1. Operation Instruction
Warning !
When selecting an appropri-
ate water temperature, the tempera-
ture may be dangerously high,
especially for children. Keep away
from the hot water outlet, as it may
cause a potential scalding hazard.
Warning !
Open hot water faucet for a
continuous and all air is purged from
water pipes. The units plastic cover
must be installed before the circuit
breaker is turned on.
Before turning on the water
heater to start operation,
pressed the ELCB test button and
the ELCB Reset (E) Button will drop,
open all of water valves fully at every
through the heater and expel
airfrom the pipe and the tank, until
Please
ensure that the water heater is
functioning correctly, and close the
valve again.
1.5 First Operation
operated by an expert technician only.
- Pressed the ELCB Reset to start
operating the water heater.
- The indicator light will show.
- The DHC...XG Water Heater features a
temperature control knob at the front
of the unit.
Additional Safety.
If for any reason, excessive heating
occurs the manual reset thermal cutout
Customer must call for service from a

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1.6 Technical Data
1. Operation Instruction
Type
Nominal capacity l
Design
Min. pressure MPa (bar)
Max. pressure MPa (bar)
Min. ow rate
Cold water connection
Dimension (W x H x D) mm
Weight kg
Electrical connection
Recomended circuit breaker A
Recomended cable size Sqmm
Rated power (kW)
Rated current (A)
Safety device
kW - A
4.0-18.2
4.4-19.1
4.8-20.0
220 V
230 V
240 V
kW - A
6.0-27.3
6.6-28.7
7.1-29.6
kW - A
8.0-36.4
8.7-37.8
9.5-39.6
DHC 4 XG DHC 6 XG DHC 8 XG
0.32 0.37
Closed, pressurized water heater
0.015 (0.15) 0.03 (0.3) 0.02 (0.2)
1 (10)
1.6 1/min
G ½“ (External Thread)
216 x 342 x 73
2.0 2.0 2.2
1/N/PE/AC 220...240 V.
25 32 40
ELCB ELCB ELCB
2.5-4 4-6 6-8
Note:
The cable sizes can only be a guiding value. Always abide by the corresponding
local standards, laws and regulations.
Stiebel Eltron Asia Ltd. cannot be held liable for any damages.

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1.7 Regulations and Provisions
- Regulations of the local power supply
company should be observed.
- Regulations of the water supply
company should be observed.
- Read & study the technical data.
- Install the unit vertically on the wall.
- Electrical connection to be secured.
- New hose-sets are to be used* and
old hose-sets should not be reused..
1.8 Important information
- Currently-applicable data on the
supply rating plate.
- Piped supplementary heating is not
permissible.
- Water installation material.
Cold water : pipe-steel or copper.
Hot water : pipe-copper.
- Electrical connection to permanently-
installed leads via circuit breaker.
- Fitting for open-outlet units are not
permitted.
- Safety valves are not required.
1. Operation Instruction
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, inall poles.
Connection wires in correct
polarity (L,N).
• Connecting wires in wrong polarity
(L,N) causes an abnormal condition
which may lead to electric leaking,
burning, etc.
• Before wiring, please check polarity
(L,N) with voltage range of a testis or
* (not included)
The unit must be connected to
the protective earth conductor
(see electric circuit diagram).
The instantaneous waterheater
should be installed in anenclosed
frost-free area, if possible close to the
the unit is to be stored in a place not
subject to frost, because there will
always be some residual water left
inside). The unit is to be installed
vertically, as in Example (Fig 1)
All the information in these
instructions for operation and
installation must be followed carefully.
They provide important information
regarding safety, operation, and
maintenance of the unit.
Maintenance work may only
installer.
When carrying out any work,
disconnect the unit from the
mains.
1.9 Installation location
1.10 Care and maintenance
unit. Do not use any foaming or
abrasive cleaning agents!

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2. Guarantee
3. Fault elimination for the user
No hot water despite water
The company does not accept
liability for any failure caused by
improper installation and / or
unauthorized installers.
Fault Cause
For guarantees please refer to the
respective terms and conditions of
supply for your country.
The installation, electrical
of this appliance should be carried
volume required for
the unit to turn it on
has not been reached.
- Heating setting too
low
- ELCB activated.
- Turn knob to the right
(max. position)
- Press the ELCB Reset
button.

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4. Installation Instruction
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
16
17
Description of the unit (Internal)
4.1 Detailed description
2. Thermostat
3. Copper Tank
4. Hot water connection
5. Cold water connection
7. Cable entry with seal
8. Terminal block for earth wire
9. ELCB
Fig 3
10. Connector to PCB control (Base)
11. Reed switch
13. ELCB reset button
14. ELCB test button
15. Power Light
16. Connector to PCB Control (Cover)
17. PCB Cover

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Installation Location Example
Dimension
216 mm.
342 mm.
73 mm.
100 mm.
4. Installation Instruction
Fig 4
Fig 5

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Wiring diagram
A - Heating Element
B - XG-PC Front PCB
C - Electronic control set
D - Control Triac set
E - Thermal Cut-Out
F - ELCB
Cable
Wall Mounting
3
4. Installation Instruction
Fig 6 Fig 7
Fig 8

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- Insert the cable through the rubber
seal at the rear of the unit. Please
the mains.
4.2 Installation the unit
Preparation before installation of the
unit:
water heater.
4. Installation Instruction
- Place a drilling guide at the drilling
position in order to drill a hole in the
wall (Fig 6).
- Insert a wall plug and screw in (the
depth of the protruding screw head
must be correct) (Fig 6#3).
- Remove the screw from underneath
the water heater
- Open the cover of the unit.
- Remove the plug connecting the
cover of the unit.
Fig 9
Fig 10
Fig 11
Fig 12

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Earth wire L wire
N wire
- Insert the Earth wire to the terminal
block for earth wire
- See recommended cable size in
technical data table
- Fit a secure connection cable ensure
dimensions are correct.
The unit must be earthed
properly (see circuit diagram
(Fig 8)).
4. Installation Instruction
- A circuit breaker or power control
switch should be installed before the
unit. The size of the circuit breaker must
correspond to the voltage of the heater
(check the size of the circuit breaker in
the Technical Information section).
- Hang the heater on the screws
mounted on the wall, and slide the
heater down into position.
Fig 13
Fig 14 Fig 16
Fig 15

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- Connect the electrical supply into the
PCB control.
- Close the casing
4. Installation Instruction
- Straighten the unit and tighten the
screws.
- Tighten the screws.
Fig 17 Fig 19
Fig 18 Fig 20

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- Fit the cold water pipe - Turn the rotary temperature control
- Fit the hot water pipe
4. Installation Instruction
Fig 23Fig 21
Fig 22

Size:A5
Material: Green read paper 75 g.
Plastic bag : 7 x 11 INCH
Part no. 7901-304852
Part name : Operating instruction DHC 6,8 XG En-Th
Rev.01
Product code : DHC 4 XG (STE) :
Country of origin : Thailand
234124 / DHC 6 XG (STE) : 233226 / DHC 8 XG (STE) : 233227