STIEBEL ELTRON DCE 3-1 Trend Instruction Manual

OPERATION AND INSTALLATION
FUNCIONAMIENTO E INSTALACIÓN
Electronically controlled electric tankless water heater
Calentador eléctrico de agua sin tanque con control electrónico
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Certified to ANSI/UL Std. 499
Conforms to CAN/CSA Std. C22.2 No. 64
Certificación con ANSI/UL Std. 499
Conforme a CAN/CSA Std. C22.2 No.64

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CONTENTS
QUICK START GUIDE
SPECIAL INFORMATION
OPERATION
1. General information �����������������������������������������5
1.1 Safety instructions����������������������������������������������� 5
1.2 Other symbols in this documentation ����������������������� 5
1.3 Units of measurement ������������������������������������������ 5
2. Safety����������������������������������������������������������5
2.1 Intended use������������������������������������������������������ 5
2.2 General safety instructions ������������������������������������ 5
2.3 Test symbols ������������������������������������������������������ 6
2.4 Licenses / certificates ������������������������������������������� 6
3. Water heater description������������������������������������6
3.1 Recommended settings ���������������������������������������� 7
4. Cleaning, care and maintenance ���������������������������7
5. Troubleshooting ����������������������������������������������7
INSTALLATION
6. Safety����������������������������������������������������������7
6.1 General safety instructions ������������������������������������ 7
6.2 Instructions, standards and regulations �������������������� 7
7. Water heater description������������������������������������8
7.1 Standard delivery������������������������������������������������ 8
7.2 Accessories�������������������������������������������������������� 8
8. Preparation ���������������������������������������������������8
8.1 Installation site��������������������������������������������������� 8
8.2 Minimum clearances�������������������������������������������� 8
8.3 Water connections����������������������������������������������� 8
8.4 Permissible water connection materials �������������������� 9
9. Installation����������������������������������������������������9
9.1 Standard non-concealed installation ������������������������ 9
9.2 Electrical connection������������������������������������������� 10
10. Commissioning ��������������������������������������������� 10
10.1 Changing power output via the jumper slot; only for
models with selectable power output���������������������� 10
10.2 Temperature setting via jumper slot - operating
voltage 240 V ���������������������������������������������������� 11
10.3 Initial start-up ��������������������������������������������������� 11
10.4 Operation with preheated water ���������������������������� 12
10.5 Recommissioning����������������������������������������������� 12
11. Water heater shutdown ����������������������������������� 12
12. Alternative installation methods ������������������������� 12
12.1 Concealed installation, electrical connection from
below�������������������������������������������������������������� 12
12.2 Electrical connection with short power cable ������������ 12
12.3 Concealed installation, electrical connection from
above�������������������������������������������������������������� 13
12.4 Electrical connection from the side, non-concealed
installation ������������������������������������������������������� 13
12.5 Concealed installation, water connections ���������������� 13
13. Service information ���������������������������������������� 14
14. Troubleshooting �������������������������������������������� 15
15. Maintenance ������������������������������������������������ 16
15.1 Draining the water heater ������������������������������������ 16
15.2 Cleaning the filter screen ������������������������������������� 16
16. Specification ������������������������������������������������ 17
16.1 Dimensions and connections ��������������������������������� 17
16.2 Wiring diagram ������������������������������������������������� 17
16.3 DHW output������������������������������������������������������ 18
16.4 Application areas/conversion table ������������������������� 18
16.5 Fault conditions ������������������������������������������������� 18
16.6 Data table �������������������������������������������������������� 19
17. Warranty ���������������������������������������������������� 20

QUICK START GUIDE
ENGLISH
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QUICK START GUIDE
Before turning on power to the water heater, you MUST flush all air out of
the system, then engage the AE3 safety switch. The unit will NOT operate
until the AE3 safety switch has been engaged.
1 Mount the unit to the wall (see section 9.1, “Standard non-concealed installation”, pg. 9).
2 Hook up water connections (see section 8.3, “Water connections”, pg. 8).
3 Hook up electrical connections, but keep circuit breaker off. (See section 9.2, “Electrical con-
nection”, pg. 10)
≥ 3 min.
12
D0000053277
4 Open and close all connected draw-off valves at least 5 times, for at least 3 minutes total,
until all air has been purged from the pipework and the water heater.
5 Ensure there are no water leaks from any plumbing connections.
D0000073622
6 Engage the AE3 safety switch by firmly pressing the white reset button until it clicks and
fully locks in place (the water heater is delivered with the safety switch disengaged).
7 Turn on power to the water heater at the circuit breaker in the breaker panel.

SPECIAL INFORMATION
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SPECIAL INFORMATION
- Read this entire manual. Failure to follow all the
guides, instructions and rules could cause personal
injury or property damage. Improper installation,
adjustment, alteration, service and use of this unit
can result in serious injury.
- This unit must be installed by a licensed electrician
and plumber. The installation must comply with
all national, state and local plumbing and electric
codes. Proper installation is the responsibility of the
installer. Failure to comply with the installation and
operating instructions or improper use voids the
warranty.
- Save these instructions for future reference. The
installer should leave these instructions with the
consumer.
- If you have any questions regarding the installation,
use or operation of this water heater, or if you need
any additional installation manuals, please call our
technical service line at 800.582.8423 (USA and Can-
ada only). If you are calling from outside the USA or
Canada, please call USA 413.247.3380 and we will
refer you to a qualified Stiebel Eltron service repre-
sentative in your area.
- The water heater may be used by children aged3
and older and persons with reduced physical, sen-
sory or mental capabilities or a lack of experience
and know-how, provided that they are supervised
or they have been instructed on how to use the
water heater safely and have understood the poten-
tial risks. Children must never play with the water
heater. Children must never clean the water heat-
er or perform user maintenance unless they are
supervised.
- The water heater is suitable for supplying a shower
in many climates (shower operation). If the water
heater is also or exclusively used for shower oper-
ation, the qualified contractor must adjust the tem-
perature setting range to 131 °F (55 °C) or less using
the internal anti-scalding protection on the water
heater. When using preheated water, it must be
ensured that the inlet temperature does not exceed
131 °F (55 °C).
- Ensure the water heater can be separated from
the power supply by a circuit breaker that discon-
nects all poles with at least 1/8˝ (3mm) contact
separation.
- The specified voltage must match the power sup-
ply. See the type plate on the right-hand side of the
water heater for full information.
- CAUTION: DO NOT INSTALL IN A BATH ENCLOSURE
OR SHOWER STALL OR CONNECT TO A SALT-REGEN-
ERATED WATER SOFTENER OR A WATER SUPPLY OF
SALT WATER
FOR USE ON AN INDIVIDUAL BRANCH CIRCUIT ONLY
CAUTION: CONNECT ONLY TO A CIRCUIT PROTECTED
BY A CLASS A GROUND FAULT CIRCUIT INTERRUPT-
ER
USE COPPER CONDUCTORS ONLY
USE BONDING CONDUCTOR IN ACCORDANCE WITH
THE CANADIAN ELECTRICAL CODE, PART I
- The water heater must be properly grounded. See
section 16.2, “Wiring diagram”, pg. 17.
- The water heater must be permanently connected
to fixed wiring. For use on an individual branch
circuit only. See section 16.2, “Wiring diagram”, pg.
17.
- Secure the water heater as described in chapter 9,
“Installation”, pg. 9.
- Observe the maximum permissible pressure (See
section 16.6, “Data table”, pg. 19).
- Drain the water heater as described in section 15,
“Maintenance”, pg. 16.

OPERATION
General information
ENGLISH
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OPERATION
1. General information
Chapters "Special information" and "Operation" are intended for
both users and qualified contractors.
Chapter "Installation" is intended for qualified contractors.
Note
Read these instructions carefully before using the water
heater and retain them for future reference.
Pass on the instructions to a new user if required.
1.1 Safety instructions
1.1.1 Structure of safety instructions
!
KEYWORD Type of risk
Here, possible consequences are listed that may result
from failure to observe the safety instructions.
f Steps to prevent the risk are listed.
1.1.2 Symbols, type of risk
Symbol Type of risk
Injury
Electrocution
Burns
(burns, scalding)
1.1.3 Keywords
KEYWORD Meaning
DANGER Failure to observe this information will result in serious
injury or death.
WARNING Failure to observe this information may result in serious
injury or death.
CAUTION Failure to observe this information may result in non-seri-
ous or minor injury.
1.2 Other symbols in this documentation
Note
General information is identified by the adjacent symbol.
f Read these texts carefully.
Symbol Meaning
Material losses
(Water heater damage, consequential losses and environ-
mental pollution)
Appliance disposal
f This symbol indicates that you have to do something. The ac-
tion you need to take is described step by step.
1.3 Units of measurement
Note
All measurements are given in inches (millimeters) unless
otherwise stated.
2. Safety
2.1 Intended use
This water heater is suitable for heating domestic hot water or
for reheating preheated water. The water heater can supply one
or more draw-off points.
Water will not be reheated if the maximum inlet temperature for
reheating is exceeded.
The water heater is intended for domestic use. It can be used
safely by untrained persons. The water heater can also be used
in non-domestic environments, e.g. in small businesses, as long
as it is used in the same way.
Any other use beyond that described shall be deemed inappro-
priate. Observation of these instructions and of the instructions
for any accessories used is also part of the correct use of this
water heater.
2.2 General safety instructions
DANGER Burns
Water temperatures over 125 °F (52 °C) can cause se-
vere burns instantly or death from scalding. A hot water
scalding potential exists if the jumper on the water heat-
er is set too high. Households with small children, dis-
abled or elderly persons may require that the jumper be
set at 110 °F (43 °C) or lower to prevent possible injury
from hot water.
CAUTION Burns
If operating with preheated water, e.g.from a solar
thermal system, the DHW temperature may vary from
the selected set temperature.
!
!

OPERATION
Water heater description
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CAUTION Burns
During operation, the tap can reach temperatures up to
158 °F (70 °C).
There is a risk of scalding at outlet temperatures in ex-
cess of 110 °F (43 °C).
!
DANGER Injury
Please read and follow these instructions. Failure to fol-
low these instructions could result in serious personal
injury or death.
!
CAUTION: DO NOT INSTALL IN A BATH ENCLOSURE OR
SHOWER STALL OR CONNECT TO A SALT-REGENERATED
WATER SOFTENER OR A WATER SUPPLY OF SALT
WATER
FOR USE ON AN INDIVIDUAL BRANCH CIRCUIT ONLY
CAUTION: CONNECT ONLY TO A CIRCUIT PROTECTED
BY A CLASS A GROUND FAULT CIRCUIT INTERRUPTER
USE COPPER CONDUCTORS ONLY
USE BONDING CONDUCTOR IN ACCORDANCE WITH THE
CANADIAN ELECTRICAL CODE, PART I
DANGER Electrocution
Before proceeding with any installation, adjustment,
alteration, or service of this appliance, all circuit break-
ers and disconnect switches servicing the appliance
must be turned off. Failure to do so could result in
serious personal injury or death.
WARNING Electrocution
Never remove or reinstall the water heater’s cover
unless the electricity servicing the unit is turned off.
Failure to do so could result in personal injury or death.
!
DAMAGE TO THE WATER HEATER AND THE ENVIRON-
MENT:
The water heater must be installed by a licensed elec-
trician and plumber. The installation must comply with
all national, state and local plumbing and electric codes.
Service of the water heater must be performed by qual-
ified service technicians.
!
DAMAGE TO THE WATER HEATER AND THE ENVIRON-
MENT:
Supply this appliance only from a grounded system. A
green terminal (or a wire connector marked “G”, “GR”,
“GROUND”, OR “GROUNDING”) is provided for wiring the
appliance. To reduce the risk of electric shock, connect
this terminal or connector to the grounding terminal of
the electric service or supply panel with a continuous
copper wire in accordance with the electrical installa-
tion code.
Note
When mounting the water heater to the wall, countersunk
screws must be used in order to maintain the IP 24 rating.
See section 9.1.4, “Mounting the water heater”, pg. 9.
!
WARNING Injury
The appliance may be used by children aged3 and older
and persons with reduced physical, sensory or mental
capabilities or a lack of experience and know-how, pro-
vided that they are supervised or they have been in-
structed on how to use the appliance safely and have
understood the potential risks. Children must never play
with the appliance. Children must never clean the ap-
pliance or perform user maintenance unless they are
supervised.
Where children or persons with limited physical, sensory or men-
tal abilities are allowed to use this water heater, we recommend
asking the qualified contractor to set a permanent “Internal an-
ti-scalding protection” temperature limit.
!
Material losses
The user should protect the water heater against frost.
2.3 Test symbols
See type plate on the water heater.
2.4 Licenses / certificates
- UL (USA) Std. 499
- CSA (Canada) Std. C22.2 No. 64
3. Water heater description
The water heater switches on automatically as soon as you open
the hot water valve at the tap. When you close the tap, the water
heater switches off automatically.
From the activation flow rate, the control unit regulates the correct
heating output, subject to the temperature selected internally via
jumper by a contractor during installation, and the current cold
incoming water temperature.
If the water heater is operated with preheated water and the inlet
temperature exceeds the chosen set temperature, the water is not
heated further.
Fixed DHW temperature
The water heater heats water as it flows through the unit.
The fixed DHW outlet temperature can be adjusted by a contrac-
tor via jumper during installation. The factory default value is
122 °F (50°C). Other selectable values include: 110 °F (43°C), 131 °F
(55 °C), 140 °F (60 °C). See section 10.2, “Temperature setting via
jumper slot - operating voltage 240 V”, pg. 11 for full informa-
tion.
Heating system
The Direct Coil™heating system is comprised of a pressure-tested,
glass-reinforced polyamide heating chamber with a nichrome wire
direct heating coil. It is suitable for hard and soft water areas and
is largely insusceptible to scale build-up. The Direct Coil™heating
system ensures rapid and efficient DHW production.

OPERATION
Cleaning, care and maintenance
ENGLISH
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Note
The water heater is equipped with an air detector that
largely prevents damage to the heating system. If, during
operation, air is drawn into the water heater, the water
heater shuts down the heating output for one minute to
protect the heating system.
3.1 Recommended settings
Your electric tankless water heater offers maximum convenience
and accuracy when providing DHW. If you do need to operate the
water heater with a thermostatic valve, we recommend adjusting
the required set temperature on the thermostatic valve.
3.1.1 Following an interruption to the water supply
!
Material losses
To ensure that the Direct Coil™heating system is not dam-
aged following an interruption to the water supply, the
water heater must be restarted by taking the following
steps.
f Shut off power to the unit at the breaker panel by
making sure that connected circuit breakers are
“OFF” to avoid any danger of electric shock.
f Open and close the tap at least five times for three
minutes total, until the water heater and its up-
stream cold water inlet line are free of air.
f Switch the power back ON at the breaker.
4. Cleaning, care and maintenance
f Never use abrasive or corrosive cleaning agents. A damp
cloth is sufficient for cleaning the water heater.
f Check the taps regularly. Limescale deposits at the tap out-
lets can be removed using commercially available descaling
agents.
5. Troubleshooting
Problem Cause Solution
The water heater will not
start despite the DHW
valve being fully open
There is no power Check to ensure circuit
breaker in breaker panel
hasn’t tripped. Reset if
necessary
The white AE3 safety
switch has not been en-
gaged during initial start-
up. Activate if necessary
(See section 10.3.1, “Initial
AE3 safety switch activa-
tion”, pg. 11). If the AE3
switch has tripped after
initial installation, contact
a qualified contractor to
fix the cause
The aerator in the tap
or the shower head is
scaled up or dirty
Clean and/or descale the
aerator or shower head
The water supply has
been interrupted
Vent the water heater and
the cold water inlet line
When hot water is being
drawn off, cold water
flows for a short period
The air detector de-
tects air in the water. It
switches off the heat-
ing output briefly
The water heater restarts
automatically after 1min-
ute
If you cannot solve the problem, contact your qualified contractor.
To facilitate and speed up your request, please provide the serial
number from the type plate (000000-0000-000000).
Nr.: 000000-0000-00000
D0000073621
INSTALLATION
6. Safety
Only a qualified contractor should carry out installation, commis-
sioning, maintenance and repair of the water heater.
6.1 General safety instructions
We guarantee trouble-free function and operational reliability
only if original accessories and spare parts intended for the water
heater are used.
!
Material losses
Observe the maximum inlet temperature. Higher tem-
peratures may damage the water heater. You can limit
the maximum inlet temperature by installing a central
thermostatic valve.
WARNING Electrocution
This water heater contains capacitors which are dis-
charged when disconnected from the power supply. The
capacitor discharge voltage may briefly exceed60VDC.
6.2 Instructions, standards and regulations
Note
Observe all applicable national and regional regulations
and instructions.
- The IP24 (splash-proof) protection rating can only be en-
sured with a correctly fitted cable grommet, and by using
countersunk screws with a diameter of 4.5 mm, max. diame-
ter of the screw-head 9 mm.
- The electrical resistivity of the water must not fall below that
stated on the type plate. In a linked water network, factor
in the lowest electrical resistivity of the water. Your water
supply utility will advise you of the electrical resistivity or
conductivity of the water in your area.

OPERATION
Water heater description
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7. Water heater description
7.1 Standard delivery
The following are delivered with the water heater:
- Cable grommet
- Filter screen, factory installed in cold water inlet
- Jumper for power output selection, attached
- Jumper for temperature setting, attached
- Jumper, spare
- Plug for electrical connection, non-concealed installation,
bottom center
7.2 Accessories
Installation kit for concealed water connections
The following accessories are required for concealed water con-
nection installations (not supplied, available as a kit, part number
200017 – IW-Kit LA):
- 2 x plugs to seal the apertures in the water heater rear cover
- 2 x 45° twin connectors
- Filter screen with sealed edge for installation on the 45°twin
connector
- Flat gasket
8. Preparation
8.1 Installation site
!
Material losses
Install the water heater in a room that is free from the
risk of frost.
f Always install the water heater vertically with plumbing fit-
tings pointing downward.
The water heater is suitable for supplying multiple fixtures, with
installation location either below or above connected fixtures. The
water heater should be positioned as close as possible to major
draw points in order to minimize pipe runs.
Taps
Do not use open vented or non-pressurized taps.
Typical residential installation
1
2
1 Cold water inlet
2 DHW outlet
Note
f Install the water heater flush to the wall. The wall
must have sufficient load bearing capacity.
8.2 Minimum clearances
(≥50)≥2˝ (≥50)≥2˝
(≥50)≥2˝
(≥100 mm)≥4˝
D0000079442
f Maintain the minimum clearances to ensure trouble-free op-
eration of the water heater and facilitate maintenance work.
8.3 Water connections
!
CAUTION: DO NOT INSTALL IN A BATH ENCLOSURE OR
SHOWER STALL OR CONNECT TO A SALT-REGENERATED
WATER SOFTENER OR A WATER SUPPLY OF SALT
WATER
FOR USE ON AN INDIVIDUAL BRANCH CIRCUIT ONLY
CAUTION: CONNECT ONLY TO A CIRCUIT PROTECTED BY A
CLASS A GROUND FAULT CIRCUIT INTERRUPTER
USE COPPER CONDUCTORS ONLY
USE BONDING CONDUCTOR IN ACCORDANCE WITH THE
CANADIAN ELECTRICAL CODE, PART I
!
Material losses
Carry out all water connection and installation work in
accordance with regulations.
!
Material losses
Excessive heat from soldering on copper pipes near the
DCE may cause damage to the unit or the plastic filter
screen located in the cold water inlet.
NOTICE
The cold water connection to the unit MUST be discon-
nected periodically in order to clean the filter screen.
It is required to use water connections that are easily
detachable such as braided steel flex connectors.
NOTICE
Hard water or water with a high mineral count may dam-
age the unit. Damage to the unit caused by scale or a high
mineral count is not covered under the warranty.

OPERATION
Installation
ENGLISH
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NOTICE
Tankless water heaters such as the DCE are not required
to be equipped with a temperature and pressure relief
valve (T&P). If the local inspector will not pass the in-
stallation without a T&P, it should be installed on the hot
water outlet side of the unit.
f Make certain that the cold water supply line has been flushed
to remove any scale and dirt.
f The DCE unit has a built in filter screen located in the cold
water inlet that should be cleaned from time to time. Clean
screen and put the screen back into its original position. See
section 15.2, “Cleaning the filter screen”, pg. 16.
f The cold water connection (inlet) is on the right side of the
unit, and the hot water connection (outlet) is on the left side
of the unit.
8.4 Permissible water connection materials
f The DCE’s hot water outlet (left) is designed for connection to
copper tubing, PEX tubing or a braided stainless steel hose
with a ½˝ NPT female tapered thread.
f The plumbing on the cold water inlet side (right) needs to be
such that it can easily be removed to allow access to the inlet
filter screen. The easiest way to achieve this is to use a braid-
ed steel flex connector with a ½˝ female NPT connection.
f If soldering near the unit is necessary, please direct the
flame away from the housing of the unit in order to avoid
damage.
f When all plumbing work is completed, check for leaks and
damage to the filter screen. Take corrective action before
proceeding.
!
Material losses
If plastic pipework systems are used, take into account
the maximum inlet temperature and the maximum per-
missible pressure.
8.4.1 Flow rate
f Ensure that the minimum activation flow rate for switching
on the water heater is met: 0.264 gal (1.0 l/min).
f If the required minimum activation flow rate is not met when
the draw-off valve is fully opened, increase the water line
pressure.
f The minimum incoming cold water supply line pressure must
be at least 26.1 psi (1.8 bar) or higher.
9. Installation
Factory settings DCE 3-1
Trend
DCE 8
Trend
DCE 10
Trend
DCE 15
Trend
Internal temperature setting
in °F (°C) 122 (50) 122 (50) 122 (50) 122 (50)
Power output in kW @ 120V 3.0
@ 208V 5.4 7.2 10.7
@ 220V 6.1 8.0 12.0
@ 240V 7.2 9.6 14.4
Standard installation DCE 3-1
Trend
DCE 8
Trend
DCE 10
Trend
DCE 15
Trend
Electrical connection from below,
non-concealed installation
x x x x
Water connection, non-concealed
installation
x x x x
For further installation options, including concealed in-wall elec-
trical and water connection options, see chapter 12, “Alternative
installation methods”, pg. 12.
9.1 Standard non-concealed installation
9.1.1 Removing the cover
D0000073641
f Open the water heater by loosening the screw and lifting the
cover up from the bottom.
9.1.2 Preparing the power cable
B
A
D0000077179
f Prepare the power cable.
Position for non-concealed
installation
Dimension A Dimension B
Bottom, center 1½˝ (30 mm)4¾˝ (120 mm)
Bottom, left side of water heater ½˝ (20 mm)3½˝ (90 mm)
Bottom, right side of water heater ½˝ (20 mm)3½˝ (90 mm)
Top, right side of water heater ½˝ (20 mm) 31/8˝ (80 mm)
Position for concealed instal-
lation
Dimension A Dimension B
Bottom ½˝ (20 mm)3½˝ (90 mm)
Top ½˝ (20 mm) 31/8˝ (80 mm)
9.1.3 Preparation
f Cut a hole in the cable grommet to fit the selected connecting
cable. Fit the cable grommet.
9.1.4 Mounting the water heater
f Mark the 4drill holes, referencing their position on the water
heater rear cover.
f Drill the holes and secure the water heater using suitable
fixing materials (screws and wall anchors are not part of
the standard delivery): Countersunk screw, Ø4.5mm, max.
diameter of screw-head 9mm. Countersunk screws must be
used in order to maintain the IP 24 rating.

OPERATION
Commissioning
10 | DCE Trend www.stiebeleltronamericas.com
D0000073844
f Connect braided steel flex connectors (recommended,
not supplied) or other pipework to the twin ½˝ NPT male
connectors.
f Open the shut-off valve in the cold water inlet line.
9.2 Electrical connection
WARNING Electrocution
Before beginning any work on the electric instal-
lation, be sure that main breaker panel switches
are “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 circuits
should be equipped with a “ground fault interrupter”.
The unit must be properly grounded in accordance
with state and local codes, or in absence of such
codes, in accordance with national electric code or the
Canadian electric code. Failure to electrically ground
the product could result in serious personal injury or
death.
!
CAUTION: DO NOT INSTALL IN A BATH ENCLOSURE OR
SHOWER STALL OR CONNECT TO A SALT-REGENERATED
WATER SOFTENER OR A WATER SUPPLY OF SALT
WATER
FOR USE ON AN INDIVIDUAL BRANCH CIRCUIT ONLY
CAUTION: CONNECT ONLY TO A CIRCUIT PROTECTED BY A
CLASS A GROUND FAULT CIRCUIT INTERRUPTER
USE COPPER CONDUCTORS ONLY
USE BONDING CONDUCTOR IN ACCORDANCE WITH THE
CANADIAN ELECTRICAL CODE, PART I
WARNING Electrocution
The connection to the power supply is only permissible
as a permanent connection in conjunction with the re-
movable cable grommet. Ensure the water heater can
be separated from the power supply by an isolator that
disconnects all poles with at least 1/8˝(3mm) contact
separation.
!Supply this appliance only from a grounded system. A
green terminal (or a wire connector marked “G”, “GR”,
“GROUND”, OR “GROUNDING”) is provided for wiring
the appliance. To reduce the risk of electric shock,
connect this terminal or connector to the grounding
terminal of the electric service or supply panel with a
continuous copper wire in accordance with the electri-
cal installation code.
!
Material losses
Observe the type plate. The specified rated voltage must
match the supply line voltage.
!
Material losses
The DCE 3-1 Trend must only be connected to a 120V elec-
trical supply. Connecting the DCE 3-1 Trend to a 208–240V
electrical supply will permanently damage the unit and
void the factory warranty.
f Push the power cable through the cable grommet.
f Connect the power cable to the wiring block (See section
16.2, “Wiring diagram”, pg. 17).
10. Commissioning
10.1 Changing power output via the jumper slot;
only for models with selectable power output
DCE 8, 10, and 15 Trend feature selectable power output. If you
select a value other than the factory default setting, you will need
to reposition the jumper. Factory default is position 2, “high.”
1
2
D0000082938
f Install the jumper in the required position on the “Pmax” pin
strip.
Jumper position Power output
DCE 8 Trend DCE 10 Trend DCE 15 Trend
1 [low] @ 208V 4.5kW 5.4kW 9.0kW
@ 220V 5.0kW 6.0kW 10.0kW
@ 240V 6.0kW 7.2kW 12.0kW
2 [high] @ 208V 5.4kW 7.2kW 10.7kW
factory default @ 220V 6.1kW 8.0kW 12.0kW
@ 240V 7.2kW 9.6kW 14.4kW
No jumper @ 208V 4.5kW 5.4kW 9.0kW
[low] @ 220V 5.0kW 6.0kW 10.0kW
@ 240V 6.0kW 7.2kW 12.0kW
f Mark the selected power output on the type plate. Use a ball-
point pen to do this.

OPERATION
Commissioning
ENGLISH
www.stiebeleltronamericas.com DCE Trend| 11
10.2 Temperature setting via jumper slot - operating
voltage 240 V
43°C | 109°F
50°C | 122°F
55°C | 131°F
60°C | 140°F
D0000073624
Jumper position Description
43°C | 109°F @240 V Forexample in nurseries, hospitals, etc.
50°C | 122°F @240 V Factory setting, typical DHW
55°C | 131°F @240 V Max. for shower operation
60°C | 140°F @240 V Commercial kitchen / health code
No jumper Limit 43°C | 109°F @240 V
f Install the jumper in the required position on the “Tmax” pin
strip.
10.2.1 Temperature rise chart at 220V operating voltage
The maximum outlet temperature of each jumper position during
normal load operation depends on the operating voltage and the
incoming water temperature.
41 50 59 68 77 86 95 104 113 122 131 140
77
86
95
104
113
122
131
140
25
30
35
40
45
50
55
60
5 10 15 20 25 30 35 40 45 50 55 60
43°C / 109°F 50°C / 122°F 55°C / 131°F 60°C / 140°F
°C
°F
D0000093035
X Inlet temperature
Y Outlet temperature
10.2.2 Temperature rise chart at 208V operating voltage
The maximum outlet temperature of each jumper position during
normal load operation depends on the operating voltage and the
incoming water temperature.
41 50 59 68 77 86 95 104 113 122 131 140
77
86
95
104
113
122
131
140
25
30
35
40
45
50
55
60
5 10 15 20 25 30 35 40 45 50 55 60
43°C / 109°F 50°C / 122°F 55°C / 131°F 60°C / 140°F
°C
°F
D0000093034
X Inlet temperature
Y Outlet temperature
CAUTION Burns
If the water supplied to the appliance is preheated, the
internal anti-scalding protection limit may be exceeded.
In such cases, limit the temperature with an upstream
central thermostatic valve.
10.3 Initial start-up
Note
During initial start-up, you MUST engage the AE3 safe-
ty switch by depressing the white reset button before
supplying power to the water heater. The unit will NOT
operate until the safety switch has been engaged.
≥ 3 min.
12
D0000053277
f Open and close all connected draw-off valves at least five
times total. Let water run for at least three minutes, until all
air has been purged from the pipework and the water heater.
f Ensure there are no water leaks from any plumbing
connections.
10.3.1 Initial AE3 safety switch activation
D0000073622
f Engage the AE3 safety switch by firmly pressing the white
reset button until it clicks and fully locks in place (the water
heater is delivered with the safety switch disengaged).

OPERATION
Water heater shutdown
12 | DCE Trend www.stiebeleltronamericas.com
D0000073642
f Hook the cover into the water heater rear cover at the top
rear. Pivot the cover downwards. Check that the cover is se-
curely seated at both top and bottom.
f Secure the cover with the screw.
f Remove the protective film from the front panel.
D0000053281
f Switch on the power supply.
10.3.2 Water heater handover
f Explain the water heater function to users and familiarize
them with how it works.
f Make the user aware of potential dangers, especially the risk
of scalding.
f Hand over the instructions.
10.4 Operation with preheated water
You can limit the maximum inlet temperature by installing a cen-
tral thermostatic valve.
Use a thermostatic valve for central premixing, for example when
operating an instantaneous water heater with preheated water.
For use in shower operation, the valve must be set to a maximum
of 131 °F (55 °C).
10.5 Recommissioning
!
Material losses
To ensure that the Direct Coil™heating system is not dam-
aged following an interruption to the water supply, the
water heater must be restarted by taking the following
steps:
f Shut off power to the unit at the breaker panel by
making sure that connected circuit breakers are
“OFF” to avoid any danger of electric shock.
f Open and close the tap at least five times for three
minutes total, until the water heater and its up-
stream cold water inlet line are free of air.
f Switch the power back ON at the breaker panel.
11. Water heater shutdown
f Shut off power to the unit at the breaker panel by making
sure that connected circuit breakers are “OFF” to avoid any
danger of electric shock.
f Drain the water heater (see section 15.1, “Draining the water
heater”, pg. 16).
12. Alternative installation methods
WARNING Electrocution
Before performing any work on the appliance, discon-
nect all poles from the power supply.
12.1 Concealed installation, electrical connection
from below
D0000079465
1
1 Cable grommet
f Break out the required aperture in the rear cover for the
power cable (for positions, see chapter 16.1, “Dimensions
and connections”, pg. 17). De-burr any sharp edges with a
file.
f Cut a hole in the cable grommet to fit the selected connecting
cable. Fit the cable grommet.
f Install the water heater and connect the power cable to the
wiring block as described in section 9.1, “Standard non-con-
cealed installation”, pg. 9.
f Seal the factory-fitted cable grommet with the plug included
in the standard delivery.
12.2 Electrical connection with short power cable
If the power cable is not quite long enough, you can install the
wiring block closer to the aperture in the water heater.
D0000073648
1
1 Cable grommet
f Reposition the wiring block from the top to the bottom. To do
so, unclip the wiring block by pushing it firmly to the left and
pulling it forwards. Clip the wiring block in at the bottom by
pushing it inwards and to the left until it clicks into place.

OPERATION
Alternative installation methods
ENGLISH
www.stiebeleltronamericas.com DCE Trend| 13
12.3 Concealed installation, electrical connection
from above
D0000073620
2
1
1 Cable grommet
2 Cable routing
f Break out the required aperture in the rear cover for the
power cable (for positions, see section 16.1, “Dimensions and
connections”, pg. 17). De-burr any sharp edges with a file.
f Cut a hole in the cable grommet to fit the selected connecting
cable. Fit the cable grommet.
f Reposition the wiring block from the bottom to the top. To do
so, unclip the wiring block by pushing it firmly to the left and
pulling it forwards. Turn the wiring block with connecting ca-
bles 180° clockwise. Lay the internal wiring under the cable
guide. Clip the wiring block in by pushing it inwards and to
the left until it clicks into place.
f Install the water heater and connect the power cable to the
wiring block as described in chapter 9.1, “Standard non-con-
cealed installation”, pg. 9.
f Seal the factory-fitted cable grommet with the plug included
in the standard delivery.
12.4 Electrical connection from the side, non-
concealed installation
f Cut and break out the required aperture in the water heater
rear cover and water heater cover for the power cable (for
positions, see chapter 16.1, “Dimensions and connections”,
pg. 17). De-burr any sharp edges with a file.
f Install the water heater and connect the power cable to the
wiring block as described in the chapter 16.1, “Dimensions
and connections”, pg. 17.
f Seal the factory-fitted cable grommet with the plug included
in the standard delivery.
12.5 Concealed installation, water connections
You will need the appropriate accessories to carry out the instal-
lation. See section 7.2, “Accessories”, pg. 8. The installation
kit for concealed water connections (not supplied, part number
200017 – IW-Kit LA) contains:
- 2 x plugs to seal the apertures in the water heater rear cover
- 2 x 45° twin connectors
- Filter screen with sealed edge for installation on the 45°twin
connector
- Flat gasket
Preparation
f Unscrew the twin connectors (including the filter screen) at-
tached to the water heater from the water supply pipes and
set them aside (not needed for this installation).
1 ¾″
44-46
D0000073660
f Seal the 45° twin connectors from the concealed water con-
nection installation kit. Screw the 45° twin connectors into
the wall connector.
To break out the apertures in the water heater rear cover, you will
need to remove the function module from the rear cover.
1.
4.
5.
2.
3.
D0000077971
f Undo the screw and disengage the locking tab.
f Push the function module on the rear cover gently
backwards.
f Remove the function module from the water heater rear
cover by pulling it slightly forwards and lifting it out.
f Push/break out the required apertures in the rear cover from
behind (for positions, see section 16.1, “Dimensions and con-
nections”, pg. 17). De-burr any sharp edges with a file.
f Install the function module in reverse order onto the water
heater rear cover until it clicks into place.
f Secure the function module with the screw.

OPERATION
Service information
14 | DCE Trend www.stiebeleltronamericas.com
Mounting the water heater
D0000085464-b
21
1 Flat gasket
2 Filter screen with sealed edge
f Mark the 4drill holes, referencing the positioning on the
water heater rear cover.
f Drill the holes and secure the water heater using suitable
fixing materials (screws and wall anchors are not part of the
standard delivery): Countersunk screw, Ø4.5mm, max. di-
ameter of screw-head 9mm.
f Secure the DHW connection pipe with a flat gasket and the
cold water inlet line with the sealed-edge filter screen (from
the accessories) to the twin connectors.
f Seal the openings on the factory-installed water connections
using the plugs from the accessories.
13. Service information
Connection overview/component overview
D0000082950
1
23
4
1 Flow meter
2 High limit safety cut-out, automatic reset
3 Pin strips for connected load and temperature setting
4 Diagnostic lights

OPERATION
Troubleshooting
ENGLISH
www.stiebeleltronamericas.com DCE Trend| 15
14. Troubleshooting
WARNING Electrocution
Never remove or reinstall the water heater’s cover
unless the electricity servicing the unit is turned off.
Failure to do so could result in personal injury or death.
WARNING Electrocution
To test the water heater using the internal diagnostic
lights, it must be connected to the power supply.
When testing with the cover off, never touch any part
of the water heater. Doing so could result in serious
personal injury or death.
Note
When testing the water heater using the diagnostic lights,
water must be flowing through the unit.
Diagnostic lights
Red Lights up in the event of a fault
Yellow Lights up in heating mode/flashes when output limit
reached
Green Flashing: Water heater connected to power supply
Diagnostic lights Problem Cause Solution
No LED is lit The water heater does not
heat up
There is no power Check to ensure the connected circuit breaker in
the main breaker panel hasn’t tripped. Reset if
necessary
The PCB is faulty Replace the function module
Green flashing, yellow
off, red off
No DHW The shower head/aerator is scaled up Descale or replace the shower head/aerator if nec-
essary
The filter screen in the cold water inlet is dirty Clean the filter screen. See section 15.2, “Cleaning
the filter screen”, pg. 16
The flow meter is not plugged in Connect the cable to the PCB
The flow meter is faulty Replace the flow meter
The PCB is faulty Replace the function module
Green flashing, yellow
on, red off
The outlet temperature does
not match the set value
The device is connected to a power supply <240 V Please observe the information in section 10.2,
“Temperature setting via jumper slot - operating
voltage 240 V”, pg. 11
The heating system is faulty Replace the function module
The PCB is faulty Replace the function module
Green flashing, yellow
off, red on
No DHW Air detected Continue draw-off for >1 minute
AE3 safety switch not activated during commission-
ing
Activate AE3 safety switch by pressing the reset
button firmly. See section 10.3.1, “Initial AE3 safety
switch activation”, pg. 11
AE3 safety switch triggered by high limit safety
cut-out
Check high limit safety cut-out (plug-in connection,
connecting cable); activate AE3 safety switch
AE3 safety switch responds again after high limit
safety cut-out has been checked; high limit safety
cut-out faulty
Replace high limit safety cut-out; activate AE3 safety
switch and draw off water at the maximum set value
for >1 min
Safety switch responds again; PCB faulty Replace the function module
PCB faulty (lead break or short circuit in inlet sen-
sor)
Replace the function module

OPERATION
Maintenance
16 | DCE Trend www.stiebeleltronamericas.com
15. Maintenance
WARNING Electrocution
Before performing any work on the appliance, discon-
nect all poles from the power supply.
15.1 Draining the water heater
The water heater can be drained for maintenance work.
WARNING Burns
Hot water may escape when you drain the water heater.
f Close the shut-off valve in the cold water inlet line.
f Open all draw-off valves.
f Undo the water connections on the water heater.
f Store the dismantled water heater free from the risk of frost,
as water residues remaining inside the water heater can
freeze and cause damage.
15.2 Cleaning the filter screen
WARNING Burns
Hot water may escape when you drain the water heater.
!
Material losses
To ensure that the Direct Coil™heating system is not dam-
aged following an interruption to the water supply, the
water heater must be restarted by taking the following
steps:
f Shut off power to the unit at the breaker panel by
making sure that connected circuit breakers are
“OFF” to avoid any danger of electric shock.
f Open and close the tap at least five times for three
minutes total, until the water heater and its up-
stream cold water inlet line are free of air.
f Switch the power back ON at the breaker panel.
The DCE has a built in sediment filter screen that should be cleaned
periodically.
15.2.1 Cleaning the filter screen, standard non-concealed
installation
f Turn off power to the water heater at the circuit breaker.
f Turn off the water supply to the water heater at the shut-off
valve.
f Open a connected hot water tap to relieve built-up pressure
(this will minimize leakage when removing the connection
from the cold water inlet).
f Disconnect the braided steel flex connector from the cold
water inlet fitting (right).
f To remove the filter screen from the bottom of the cold water
inlet, carefully insert a flathead screwdriver just above the
plastic lip of the filter screen, and gently pull downward.
f Clean the filter screen, re-insert securely into the cold water
inlet fitting, and reconnect the braid steel flex connector to
the cold water inlet.
f Open the cold water supply shut-off valve.
f Vent the air from pipes and the water heater by opening the
hot water faucet for a few minutes, until water flow is contin-
uous and all air is purged from the water pipes.
f Turn on circuit breaker to bring electrical power to the unit.
15.2.2 Cleaning the filter screen, concealed installation
f Turn off power to the water heater at the circuit breaker.
f Turn off the water supply to the water heater at the shut-off
valve.
f Open a connected hot water tap to relieve built-up pressure
(this will minimize leakage when removing the connection
from the cold water inlet).
f Open the water heater by loosening the screw and lifting the
cover up from the bottom.
f Unscrew the G3/8˝-union-nut from the cold water pipe
elbow.
f Clean the filter screen, located between inlet-line and twin
connector. (compare to picture in chapter concealed installa-
tion, water connections)
f Secure the cold water inlet line with the sealed-edge filter
screen.
f Open the cold water supply shut-off valve.
f Vent the air from pipes and the water heater by opening the
hot water faucet for a few minutes, until water flow is contin-
uous and all air is purged from the water pipes.
f Ensure there are no water leaks.
f Hook the cover into the water heater rear cover at the top
rear. Pivot the cover downwards. Check that the cover is se-
curely seated at both top and bottom. Secure the cover with
the screw.
f Turn on circuit breaker to bring electrical power to the unit.

OPERATION
Specication
ENGLISH
www.stiebeleltronamericas.com DCE Trend| 17
16. Specification
16.1 Dimensions and connections
145/8˝(372)
141/16˝(358)
131/2˝(343)
9/16˝ (14)
313/16˝(97)
89/16˝(217)
51/2˝(140)
67/8˝(175)
315/16˝
(100)
c01c06
b02
1415/16˝(380)
11/4˝ (32)
13/8˝ (35)
D0000084885
DCE Trend
b02 Entry electrical cables I Non-concealed
c01 Cold water inlet Male thread ½˝ NPT
c06 DHW outlet Male thread ½˝ NPT
Alternative connection options
315/16˝
(100)
c01c06
b02
213/16˝ (72)
13˝ (330)
b02
b02
23/4˝ (69)
13/8˝ (35)
131/4˝ (336)
b02
b03
13/16˝
(30)
23/8˝ (61)
b03
9/16˝
(15)
D0000073720
DCE Trend
b02 Entry electrical cables I Non-concealed
b03 Entry electrical cables II Concealed
c01 Cold water inlet Male thread ½˝ NPT
c06 DHW outlet Male thread ½˝ NPT
16.2 Wiring diagram
DCE 3-1 Trend
L N
1/N/GND ~ 120V
N
L
L
L
D0000085463
1
3
4
2
1 Power PCB with integral safety switch
2 Direct Coil™heating system
3 High limit safety cut-out
4 Wiring block
DCE 8 Trend | DCE 10 Trend | DCE 15 Trend
L L
2/GND ~ 208 / 220 / 240 V
L N
1/N/GND ~ 208 / 220 / 240V
N
L
L
L
D0000077991
1
3
4
2
1 Power PCB with integral safety switch
2 Direct Coil™heating system
3 High limit safety cut-out
4 Wiring block

OPERATION
Specication
18 | DCE Trend www.stiebeleltronamericas.com
16.3 DHW output
The DHW output is subject to the connected power supply, the
water heater's selected power output, and the cold water inlet
temperature. The rated voltage and rated output can be found on
the type plate. See section 10.2, “Temperature setting via jumper
slot - operating voltage 240 V”, pg. 11 for further information.
Power output in kW 100°F DHW output in gpm
Rated voltage Cold water inlet temperature
120V 208V 220V 240V 41 °F 50 °F 59 °F 68 °F
3.0 0.34 0.40 0.50 0.63
4.5 0.50 0.61 0.74 0.95
5.4 0.61 0.74 0.90 1.14
5.0 0.58 0.69 0.82 1.06
6.1 0.69 0.82 1.00 1.27
6.0 0.69 0.82 0.98 1.27
7.2 0.82 0.98 1.19 1.51
5.4 0.61 0.74 0.90 1.14
7.2 0.82 0.98 1.19 1.51
6.0 0.69 0.82 0.98 1.27
8.0 0.92 1.08 1.32 1.66
7.2 0.82 0.98 1.19 1.51
9.6 1.11 1.29 1.59 2.01
9.0 1.03 1.22 1.48 1.88
10.7 1.22 1.45 1.74 2.25
10.0 1.14 1.35 1.64 2.09
12.0 1.37 1.61 1.98 2.51
12.0 1.37 1.61 1.98 2.51
14.4 1.64 1.93 2.35 3.01
Power output in kW 122°F DHW output in gpm
Rated voltage Cold water inlet temperature
120V 208V 220V 240V 41 °F 50 °F 59 °F 68 °F
3.0 0.26 0.29 0.32 0.37
4.5 0.37 0.42 0.48 0.55
5.4 0.45 0.50 0.58 0.69
5.0 0.42 0.48 0.53 0.63
6.1 0.50 0.58 0.66 0.77
6.0 0.50 0.55 0.63 0.77
7.2 0.61 0.69 0.77 0.90
5.4 0.45 0.50 0.58 0.69
7.2 0.61 0.69 0.77 0.90
6.0 0.50 0.55 0.63 0.77
8.0 0.66 0.77 0.87 1.00
7.2 0.61 0.69 0.77 0.90
9.6 0.79 0.90 1.03 1.22
9.0 0.77 0.85 0.98 1.14
10.7 0.90 1.00 1.16 1.35
10.0 0.85 0.95 1.08 1.27
12.0 1.00 1.14 1.29 1.51
12.0 1.00 1.14 1.29 1.51
14.4 1.22 1.35 1.56 1.82
Power output in kW 38°C DHW output in l/min.
Rated voltage Cold water inlet temperature
120V 208V 220V 240V 5°C 10°C 15°C 20°C
3.0 1.3 1.5 1.9 2.4
4.5 1.9 2.3 2.8 3.6
5.4 2.3 2.8 3.4 4.3
5.0 2.2 2.6 3.1 4.0
6.1 2.6 3.1 3.8 4.8
6.0 2.6 3.1 3.7 4.8
7.2 3.1 3.7 4.5 5.7
5.4 2.3 2.8 3.4 4.3
7.2 3.1 3.7 4.5 5.7
6.0 2.6 3.1 3.7 4.8
8.0 3.5 4.1 5.0 6.3
7.2 3.1 3.7 4.5 5.7
9.6 4.2 4.9 6.0 7.6
9.0 3.9 4.6 5.6 7.1
10.7 4.6 5.5 6.6 8.5
10.0 4.3 5.1 6.2 7.9
12.0 5.2 6.1 7.5 9.5
12.0 5.2 6.1 7.5 9.5
14.4 6.2 7.3 8.9 11.4
Power output in kW 50°C DHW output in l/min.
Rated voltage Cold water inlet temperature
120V 208V 220V 240V 5°C 10°C 15°C 20°C
3.0 1.0 1.1 1.2 1.4
4.5 1.4 1.6 1.8 2.1
5.4 1.7 1.9 2.2 2.6
5.0 1.6 1.8 2.0 2.4
6.1 1.9 2.2 2.5 2.9
6.0 1.9 2.1 2.4 2.9
7.2 2.3 2.6 2.9 3.4
5.4 1.7 1.9 2.2 2.6
7.2 2.3 2.6 2.9 3.4
6.0 1.9 2.1 2.4 2.9
8.0 2.5 2.9 3.3 3.8
7.2 2.3 2.6 2.9 3.4
9.6 3.0 3.4 3.9 4.6
9.0 2.9 3.2 3.7 4.3
10.7 3.4 3.8 4.4 5.1
10.0 3.2 3.6 4.1 4.8
12.0 3.8 4.3 4.9 5.7
12.0 3.8 4.3 4.9 5.7
14.4 4.6 5.1 5.9 6.9
16.4 Application areas/conversion table
Electrical resistivity and electrical conductivity.
Standard specifica-
tion at 15°C 20°C 25°C
Resis-
tivity
ρ≥
Conductivity σ≤ Resis-
tivity
ρ≥
Conductivity σ≤ Resis-
tivity
ρ≥
Conductivity σ≤
Ωcm mS/m μS/cm Ωcm mS/m μS/cm Ωcm mS/m μS/cm
1100 91 910 970 103 1031 895 112 1117
Pressure drop, sizing the pipework
When calculating the size of the pipework, an water heater pres-
sure drop of 14.5 psi (0.1MPa) is recommended.
16.5 Fault conditions
In the event of a fault, temperatures up to 176 °F (80 °C) at a pres-
sure of 145 psi (1.0 MPa) can occur briefly in the installation.

OPERATION
Specication
ENGLISH
www.stiebeleltronamericas.com DCE Trend| 19
16.6 Data table
DCE 3-1
Trend
DCE 8 Trend DCE 10 Trend DCE 15 Trend
238144 238145 238146 238147
Electrical data
Rated voltage V120 208 220 240 208 220 240 208 220 240
Rated output1kW 3.0 4.5/5.4 5.0/6.1 6.0/7.2 5.4/7.2 6.0/8.0 7.2/9.6 9.0/10.7 10.0/12.0 12.0/14.4
Rated current A26.9 21.7/26.0 22.9/27.5 25.0/30.0 25.8/34.4 27.3/36.4 30.0/40.0 43.3/51.6 45.5/54.5 50.0/60.0
Recommended circuit breaker size2A30 25/30 30/35 30/40 30/40 50/60
Min. recommended wire size3(AWG
copper)
10 10 8 6
Frequency Hz 50/60 50/60 50/60 50/60
Phase 1/N/GND 1/N/GND | 2/GND 1/N/GND | 2/GND 1/N/GND | 2/GND
Resistivity ρ15 ≥ Ω cm 1100 1100 1100 1100
Conductivity σ15 ≤ μS/cm 910 910 910 910
Max. mains impedance at 50Hz Ω N/A 0.0543 0.0513 0.0471 0.0407 0.0385 0.0353 0.0272 0.0257 0.0235
Connections
Water connection ½˝ NPT ½˝ NPT ½˝ NPT 1/2" NPT
Application limits
Max. permissible pressure psi (MPa) 145 (1) 145 (1) 145 (1) 145 (1)
Max. inlet temperature for reheating °F (°C) 131 (55) 131 (55) 131 (55) 131 (55)
Temperature setting values @240 V °F
(°C)
109/122/131/140
(43/50/55/60)
109/122/131/140
(43/50/55/60)
109/122/131/140
(43/50/55/60)
109/122/131/140
(43/50/55/60)
Values
Max. inlet temperature (e.g. pasteur-
ization)
°F (°C) 158 (70) 158 (70) 158 (70) 158 (70)
Activation rate gpm (l/min) 0.264 (1.0) 0.264 (1.0) 0.264 (1.0) 0.264 (1.0)
Hydraulic data
Nominal capacity gal (l) 0.07 (0.277) 0.07 (0.277) 0.07 (0.277) 0.07 (0.277)
Versions
Adjustable power output No Yes Yes Yes
Protection class 1 1 1 1
Insulating block Plastic Plastic Plastic Plastic
Heating system Direct Coil™Direct Coil™Direct Coil™Direct Coil™
Cover and rear cover Plastic Plastic Plastic Plastic
Color White White White White
IP rating IP 24 IP 24 IP 24 IP 24
Dimensions
Height in (mm) 14
5/8˝ (372) 14 5/8˝ (372) 14 5/8˝ (372) 14 5/8˝ (372)
Width in (mm) 8
9/16˝ (217) 8 9/16˝ (217) 8 9/16˝ (217) 8 9/16˝ (217)
Depth in (mm) 4
5/16˝ (109) 4 5/16˝ (109) 4 5/16˝ (109) 4 5/16˝ (109)
Weights
Weight lb (kg) 5.5 (2.50) 5.5 (2.50) 5.5 (2.50) 5.5 (2.50)
1For units with adjustable power output, factory default setting is jumper position 2 [high]
2Overcurrent protection sized at 100% of load. Tankless water heaters are considered a non-continuous load. Use only GFCI Class A circuit breakers.
3Copper conductors with a temperature rating of 75 °C or greater must be used. Conductors should be sized to maintain a voltage drop of less than 3% under
load.
These are our recommendations. Check local codes for compliance if necessary.
Note
The water heater conforms to IEC 61000-3-12.

20 | DCE Trend www.stiebeleltronamericas.com
WARRANTY | ENVIRONMENT AND RECYCLING
WARRANTYWARRANTY
ENVIRONMENT AND RECYCLINGENVIRONMENT AND RECYCLING
RESIDENTIAL & COMMERCIAL WARRANTY: Stiebel Eltron warrants to the original owner that the instanta-
neous water heater will be free from defects in workmanship and materials for a period of three (3) years
from the date of purchase.
Should the part(s) prove to be defective under normal use during this period, Stiebel Eltron, Inc. will be
responsible for replacement of the defective part(s) only. Stiebel Eltron, Inc. is not responsible for labor
charges to remove and/or replace the defective part(s), or any incidental or consequential expenses. Stiebel
Eltron is not responsible for damage to the instantaneous water heater caused by water quality issues such
as corrosive water, hard water, and water contaminated with pollutants or additives.
Should the owner wish to return the instantaneous water heater for repair, the owner must first secure
written authorization from Stiebel Eltron, Inc. The owner shall be required to show proof of purchase date,
and to pay all transportation costs to return the defective part(s) or instantaneous water heater for repair or
replacement. Warranty is void if water heater has been installed or used improperly or if design has been
altered in any way.
Warranties may vary by country. Please consult your local Stiebel Eltron representative for the warranty for
your country.
STIEBEL ELTRON, INC.
17 West Street
West Hatfield, MA 01088, USA
PHONE: [phone] or 413-247-3380
FAX: [phone]
E-Mail [e-mail]
www.stiebel-eltron-usa.com
!
The installation, electrical connection and first operati-
on of this appliance should be carried out by a qualified
installer.
! The company does not accept liability for failure of any
goods supplied which have not been installed and ope-
rated in accordance with the manufacturer‘s
instructions.
Environment and recycling
Please help us to protect the environment by disposing of the
packaging in accordance with the national regulations for waste
processing.
17. Warranty