STIEBEL ELTRON DMT 6 User manual

This water heater must be installed (water and electrical installation),
commissioned and serviced by approved service technicians in
accordance with these instructions.

English
Instantaneous water heater - Operation and installation instructions


DMT 6

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 can be
used by children aged
from 8 years and above and
persons with reduced
physical, sensory or mental
capabilities 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.
Children shall not play
with the appliance.
Cleaning and user
maintenance shall not be
made by children without
supervision.







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
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 


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




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


STIEBEL ELTRON 3
English
1. Operation / Installation instruction ............................................................................................................... 4
1.1 Description of the unit ................................................................................................................................... 4
1.2 Technical Data ................................................................................................................................................... 5
1.3 Important note ................................................................................................................................................. 6
1.4 Regulations and provisions .......................................................................................................................... 6
1.5 Instalation location ......................................................................................................................................... 6
1.6 Handing over the unit .................................................................................................................................... 6
1.7 Care and Maintenance ................................................................................................................................... 6
1.8 Service note ....................................................................................................................................................... 7
1.9 Warning .............................................................................................................................................................. 7
1.10 Important information ................................................................................................................................... 7
1.11 Putting the water heater into operation ................................................................................................. 7
2. Guarantee ................................................................................................................................................................... 8
3. Fault elimination for the user ........................................................................................................................... 8
4. Installation instruction ......................................................................................................................................... 9
4.1 Components of the unit ................................................................................................................................ 11
4.2 Installation instruction for the qualified installer.................................................................................. 12
4.3 Water connections .......................................................................................................................................... 12
4.4 Electrical connection ...................................................................................................................................... 12

 ....................................................................................................................... 13
   13
   
   15
   
   15
   
   15
   
   16
 16
 16
 ................................................................................................................................................................ 17
 ....................................................................................................................... 17
 .................................................................................................................................................... 18
   
   21
   21
   
Content


STIEBEL ELTRON
4
1. Operating / Installation Instruction
for the user and the qualied installer
1.1 Description of the unit.
This manual must be read carefully
before attempting to install the mini
multipoint water heater. If you do not
follow the safety rules or the instructions
outlined in this manual, the unit may
not operate properly and it could cause
property damage, serious body injury
and/or death.
Stiebel Eltron will not be liable for any
damages because of failure to comply
with the installation and operating
instructions outlined in this manual or
because of improper use. Improper use
includes the use of this appliance to
heat any liquid other than water.
Failure to comply with the installation
and operating instructions or improper
use voids warranty. Never remove the
unit’s plastic cover unless the electricity
is turned off.
If you have any questions regarding the
installation or operation of this water
heater, or if you need an additional
installation manual, please call our
technical service line and we will refer
you to a qualified Stiebel eltron service
representative in your area.
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.
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.
General
The Mini Multipoint water heater does
not store hot water. Instead, water is
heated instantaneously as it flows
through the unit. The input of heat into
the water is electronically controlled.
Please set the desired power using the
knob on the front cover. The Lamp
lights up when the unit is “ON”.
Warning :
Do not switch on if there is a
possibility that water in the heater is
froze.

STIEBEL ELTRON 5
1. Operating / Installation Instruction
for the user and the qualied installer
1.2 Technical Data
Type DMT 6
System design Closed
Min. inlet water pressure MPa (bar) 0.08 (0.8)
Max. inlet water pressure MPa (bar) 1 (10)
Nominal capacity L. ≤0.25
Dimension (W x H x D) mm 170 x 220 x 80
Weight (empty) kg. 1.4
Electrical connection 1/N/PE/AC 220 V.
Power Regulating device 4 steps control (Off - Low - Med - High)
Water connections (surface installation) G ½”
Recommended circuit breaker A 32
Recommended cable size Sqmm. 4-6
Rated Power (kW) Rated current (A)
220 V
kW - A
6.0 - 27.3
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.

* (not included)
STIEBEL ELTRON
6
1. Operating / Installation Instruction
for the user and the qualied installer
1.3 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.
The appliance is not to be installed
in locations where freezing can
occur.
1.4 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 flush with the wall.
- Electrical connection to be secure.
- New hose-sets are to be used* and
old hose-sets should not be
reused.
The device must be capable of
being isolated from the mains,
for example by fuses, with an isolating
distance of at least 3 mm. in all poles.
If the supply cord is damaged,
it must be replaced by the
manufacturer, its service agent or
similarly qualified 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.
1.5 Installation location
The 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 DMT 6 is to be installed vertically on a
wall (hot water connection downwards).
1.6 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.
1.7 Care and Maintenance
All that is needed for cleaning 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
technician.
Normal maintenance
The Mini Multipoint water heater is de-
signed for a very long service life.
Actual life expectancy will vary with water
quality and use. The unit itself does not
require any regular maintenance.
However, to ensure consistent water flow,
it is recommended to periodically remove
s cale and dirt that may build up at the filter
aerator of the faucet or in the shower head.

STIEBEL ELTRON 7
1. Operating / Installation Instruction
for the user and the qualied installer
1.8 Service note
When carrying out any work,
isolate the unit from the mains
and shut off the water connection.
- Clean the filter
Disconnect the union nut ,remove
washer , filter and clean. Re-assemble
in reverse order.
1.9 Warning
When selecting the temperature
at the draw off fitting, high water
temperatures may be reached.
Children, especially, should be kept
from the fitting due to the risk of salding.
1.10 Important information
- Currently-applicable data on the
supply rating plate.
- Install the unit flush with the wall.
- Piped supplementary heating is
not permissible.
- Water installation material.
Cold water : pipe-steel or copper.
Hot water : pipe-copper.
- Electrical connection to perma-
nently installed leads via circuit
breaker.
- Fitting for open-outlet units are not
permitted.
- Safety valves are not required.
Additional Safety.
If for any reason, excessive heating occurs
the manual reset thermal cut-out will
cut off the power permanently
* Customer must call for service from a
qualified technician.
1.11 Putting the water heater into
operation
1. Turn on circuit breaker to bring
electrical power to the unit.
2. Adjust the power to the desired
level using the knob on the
front cover of the unit.
3. Turn on hot water and wait twenty
seconds until temperature has
stabilized.
4. Check the water temperature
with your hand and make sure
that it does not feel too hot.
Reduce if necessary.
5. Explain to the user how the unit
works and familiarize him or her
with its use.
Advise the user about possible
hazards. Hand over these
instructions, to be kept for
future reference.
Warning:
Open hot water faucet for a few
minutes until water flow is continuous
and all air is purged from water pipes.
The unit’s plastic cover must be installed
before the circuit breaker is turned on.
Tip : The operation of the unit is
very convenient, after selecting
the desired power, users can turn on
or turn off the unit, adjust the water
temperature directly by water tap, it is
not necessary to operate the knob on
the front cover frequently.

STIEBEL ELTRON
8
2. Guarantee
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 failure of any
good supplied which have not been in-
stalled and operated in accordance with
the manufacturer’s instructions.
Fault Cause Rectification
No hot water - Circuit breaker off
- Not enough flow rate to
activate unit
- Turn circuit breaker on
- Clean filter faucet aerator
or shower head
Water not hot enough - Water flow too high
- Voltage too low
- Reduce water flow
- Supply correct voltage to
unit.
3. Fault elimination for the user

min. 4.5 mm
max. 5.5 mm
115 mm
50 mm
4 x 35 mm
6 mm
6 mm
Fig 1 Fig 2
Fig 3
STIEBEL ELTRON 9
4. Installation Instruction for the qualied installer

170 mm. 80 mm.
220 mm.
Warning:
As with any electric appliance, failure to electrically
ground unit may result in serious injury or death.
L
N
Manual re-set
Thermal cut-out
The Position Table
Selector Switch 4 Step
Micro Switch
Heating Elements
Selector Switch
4 Step
Lamp
POSITION
OFF
MID
LOW
HIGH
A B
1 2 3 4
A
3
2
B
Fig 4 Fig 5
Fig 6
STIEBEL ELTRON
10
4. Installation Instruction for the qualied installer
Installation location Dimension

Fig 7
STIEBEL ELTRON 11
4. Installation Instruction for the qualied installer
4.1 Components of the unit
1. Fixing hole (2 nos.)
2 Cable seal
3. Step switch
4. Differential pressure switch
assembly
5. Cold water connection
18
10
7
13
4
5
9
6
2
90 mm.
6. Hot water connection
7. Water container assembly
8. Thermostat
9. Gasket with filter
10. Union nut (provided by client)

STIEBEL ELTRON
12
4. Installation Instruction for the qualied installer
4.2 Installation instruction
for the qualified installer
1. Install the Mini Multipoint as
close as possible to the main hot
water draw-off points.
2. Leave a minimum of 13 cm. of
clearance on all sides for servicing.
3. Remove plastic cover. (Fig 2)
4. Mount unit securely to wall by
putting two screws through
mounting holes. Screws and
plastic wall plugs for mounting
are provided. (Fig 3)
4.3 Water connections
1. All plumbing work must comply
with national and applicable
state and local plumbing codes.
2. Make certain that the cold water
supply line has been flushed to
remove any scale and dirt.
3. Cold water connection (inlet) is
on the right side of the unit (Fig
7 # 5), hot water connection
(outlet) is on the left side of the
unit. (Fig 7 # 6)
4. Both inlet and outlet connec-
tions are suitable for 15 mm.
diameter copper pipe.
5. When all plumbing work is
completed, check for leaks and
take corrective action before
proceeding.
Unit must be installed in a
vertical position with the water
fittings pointing downward. Do not
install unit where it would routinely
be splashed with water. Electric shock
may result.
4.4 Electrical connection
1. All electrical work must comply
with national and applicable
state and local electrical codes.
2. The Mini Multipoint should be
connected to a properly grounded
dedicated branch circuit of proper
voltage rating. In installation
with several Mini Multipoint
units, each unit requires an
independent circuit.
3. The “live” wires must be connected
to the slots on the terminal
block marked L. The ground
wire must be connected to the
slot marked with the ground
symbol.
4. Reinstall plastic cover.
Warning:
Before beginning any work on
the electric installation, be sure that
main breaker panel switch is, “OFF”
to avoid any danger of electric shock.
All mounting and plumbing must be
completed before proceeding with
electrical hook-up where required by
local, state or national electrical codes
the circuit should be equipped with a
“Ground fault interrupter”.

STIEBEL ELTRON 13


 





 


 

 

 



 
 

 


















   
  
 

 




STIEBEL ELTRON
14

 
 
 
 
 
 ≤0.25
 
  
 
 
 G½”
 32
 









*
STIEBEL ELTRON 15








 
  
 
  
 
 
 
 *
  



















 
  
 
  
 
 






 


 

 



STIEBEL ELTRON
16



 

 
  
  
 

 



 
  
 
 
 
  
  
 
  
 
 






  
2 
  
 
  
 
  
 
  
  
   
  


 

 







STIEBEL ELTRON 17

 






  
 





 

















min. 4.5 mm
max. 5.5 mm
115 mm
50 mm
4 x 35 mm
6 mm
6 mm
 

STIEBEL ELTRON
18


170 mm. 80 mm.
220 mm.
Warning:
As with any electric appliance, failure to electrically
ground unit may result in serious injury or death.
L
N
Manual re-set
Thermal cut-out
The Position Table
Selector Switch 4 Step
Micro Switch
Heating Elements
Selector Switch
4 Step
Lamp
POSITION
OFF
MID
LOW
HIGH
A B
1 2 3 4
A
3
2
B
 

STIEBEL ELTRON 19

 


STIEBEL ELTRON
20


 
 
 
 
 
18
10
7
13
4
5
9
6
2
90 mm.
 
 
 
 
 