STIEBEL ELTRON DHC 3-1 Instruction Manual

OPERATION AND INSTALLATION
OPERACIÓN E INSTALACIÓN
UTILISATION ET INSTALLATION
Electric Tankless Water Heater
Calentador de Agua Instantáneos sin Tanque
Chauffe-Eau Électrique sans Accumulateur
» DHC 3-1 Classic
» DHC 3-2 Classic
» DHC 4-2 Classic
» DHC 4-3 Classic
»DHC5-2Classic
» DHC 6-2 Classic
» DHC 6-3 Classic
» DHC 8-2 Classic
» DHC 9-3 Classic
»DHC10-2Classic
Certified to ANSI/UL Std. 499
Conforms to CSA Std. E335-1/3E & CSA E60335-2-35
Certificación con ANSI/UL Std. 499
Conforme a CAN/CSA Std. E335-1/3E & CSA E60335-2-35
Certifié à la norme ANSI/UL Std. 499
Conforme à la norme CAN/CSA Std. E335-1/3E
& CSA E60335-2-35
Tested and certified by WQA to NSF/ANSI372
for lead free compliance.
Probado y certificado por WQA NSF/ANSI 372 para
el cumplimiento de las regulaciones sin plomo.
Testé et certifié par WQA à la NSF/ANSI 372 pour une
utilisation sans plomb.

2|DHC CLASSIC WWW.STIEBEL-ELTRON-USA.COM
CONTENTS | OPERATION
SPECIAL INFORMATION
- Read this entire manual. Failure to follow all the guides, in-
structions 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 Canada 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 represen-
tative in your area.
- The water heater may be used by children aged3 and older
and persons with reduced physical, sensory or mental capabili-
ties 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 potential risks.
Children must never play with the water heater. Children must
never clean the water heater or perform user maintenance un-
less they are supervised.
- Ensure the water heater can be separated from the power sup-
ply by a circuit breaker that disconnects all poles with at least
1/8˝ (3mm) contact separation.
- The specified voltage must match the power supply. See the
type plate on the right-hand side of the water heater for full
information.
- The water heater must be properly grounded. See 11.2, “Wir-
ing diagrams”, pg. 10.
- The water heater must be permanently connected to fixed
wiring. For use on an individual branch circuit only. See 11.2,
“Wiring diagrams”, pg. 10.
- Secure the water heater as described in chapter 5, “Mounting
the unit”, pg. 5.
- Observe the maximum permissible pressure (See 11.4, “Data
tables”, pg. 11).
SPECIAL INFORMATION
OPERATION
1. General information ___________________________________________ 3
1.1 Safety information__________________________________________________ 3
1.2 Other symbols in this document_________________________________ 3
2. Safety____________________________________________________________ 3
2.1 Intended use_________________________________________________________ 3
2.2 Safety Precautions__________________________________________________ 3
2.3 Test symbols _________________________________________________________ 4
2.4 Licenses / certificates ______________________________________________ 4
3. Register your product _________________________________________ 4
4. General description ____________________________________________ 4
INSTALLATION
5. Mounting the unit ______________________________________________ 5
6. Water connections _____________________________________________ 6
6.1 Aerator installation at connected faucet _______________________ 6
7. Electrical connection___________________________________________ 6
7.1 DHC 3-2, and DHC 4-2 @208 V electrical connection _______ 7
7.2 Terminal block_______________________________________________________ 7
8. Commissioning _________________________________________________ 7
8.1 Water heater handover ____________________________________________ 7
9. Troubleshooting ________________________________________________ 8
9.1 Flow adjustment screw____________________________________________ 8
9.2 Safety thermal cut-out reset button ____________________________ 8
10. Normal maintenance___________________________________________ 9
11. Technical Data __________________________________________________ 9
11.1 Dimensions___________________________________________________________ 9
11.2 Wiring diagrams ___________________________________________________10
11.3 Temperature increase above ambient water temperature 10
11.4 Data tables __________________________________________________________11
12. Spare parts ____________________________________________________13
13. Warranty _______________________________________________________14

OPERATION
GENERAL INFORMATION
ENGLISH
WWW.STIEBEL-ELTRON-USA.COM DHC CLASSIC| 3
OPERATION
1. General information
The chapters “Special information” and “Operation” are intended
for both users and qualified contractors.
The 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 information
1.1.1 Structure of safety information
KEYWORD Type of risk
Here, possible consequences are listed that may result
from not observing the safety information.
fSteps 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 Description
DANGER If this information is not observed, it will result in serious
injury or death.
WARNING If this information is not observed, it can result in serious
injury or death.
CAUTION If this information is not observed, it can lead to medium or
minor injury.
1.2 Other symbols in this document
Note
Notes are bordered by horizontal lines above and below
the text. General information is identified by the symbol
shown on the left.
fRead these notes carefully.
Symbol
!Damage to the water heater and environment
Appliance disposal
2. Safety
Observe the following safety information and regulations.
Operate the water heater only when fully installed and with all safety
equipment fitted.
2.1 Intended use
The water heater is intended for heating domestic hot water and can
supply one draw-off point.
The DHC Classic can be used for hand washing type applications in
the U.S. and Canada:
- Restroom sinks in commercial/industrial facilities and homes
- Kitchen areas in commercial /industrial facilities and homes
- Special uses in photo developing shops, laboratories etc.
The DHC Classic can also be used for whole apartments and homes in
warm climate zones such as the Caribbean region, Central America,
and Mexico due to the higher incoming water temperatures.
Any other use beyond that described shall be deemed inappropri-
ate. 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 Safety Precautions
!DANGER: Injury
Please read and follow these instructions. Failure to fol-
low these instructions could result in serious personal
injury or death.
!Damage to the water heater and the environment
The water heater must be installed by a licensed electri-
cian 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 qualified
service technicians.
!

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INSTALLATION
REGISTER YOUR PRODUCT
DANGER: Electrocution Before beginning any work on the electric installation, be
sure that main breaker panel switches are "off" to avoid
any danger of electric shock. All mounting and plumb-
ing must be completed before proceeding with electri-
cal 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.
DANGER: Electrocution Never remove the appliance‘s cover unless the electricity
servicing the appliance is turned off. Failure to do so could
result in personal injury or death.
DANGER: Burns Water temperatures over 125 °F (52°C) can cause severe
burns instantly or death from scalding. A hot water scald-
ing potential exists if the thermostat on the water heater
is set too high. Households with small children, disabled
or elderly persons may require that the thermostat be
set at 113 °F (45 °C) or lower to prevent possible injury
from hot water.
!WARNING: Injury
Where children or persons with limited physical, sensory
or mental capabilities are to be allowed to control this
water heater, ensure that this will only happen under
supervision or after appropriate instructions by a person
responsible for their safety. Children should be super-
vised to ensure that they never play with the water heater.
WARNING Electrocution
The connection to the power supply is only permissible
as a permanent connection in conjunction with a ¾˝
Romex clamp. 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.
!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. E335-1/3E, and CSA E60335-2-35
3. Register your product
You must register this product within 90 days of pur-
chase on our web site in order to activate the standard
warranty or to be eligible for the extended warranty.
Go to our web site at www.stiebel-eltron-usa.com and
click on register your product.
Before beginning the registration process, we suggest that you
gather the necessary information which will be as follows:
Type, Example: DHC 3-1 Classic (from the label that is on the
unit)
Number listed after "Nr."
Place of Purchase
Purchase Date
First & Last Name
Email address
Physical Address
Phone Number
Installation Date
If you have any questions concerning the registration process or
warranty options, please contact Stiebel Eltron USA directly at
800.582.8423.
4. General description
The DHC Classic tankless water heater differs from conventional
storage type water heaters in several ways. It does not store hot
water. Instead, water is heated instantaneously as it flows through
the unit. The powerful heating elements are activated by a flow
switch as water is drawn from a hot water faucet connected to the
DHC Classic. Due to the absence of stand-by losses, the DHC Classic
has greater energy efficiency than storage type water heaters.
The temperature of the hot water delivered by the DHC Classic de-
pends on the wattage of the heating element, the temperature of
the incoming cold water, and the water flow rate through the unit.
In order for the DHC Classic to operate properly, it must be carefully
matched to the application.
In case you have questions regarding the way you plan to use the DHC
Classic, please call our technical service line at 800.582.8423 (USA and
Canada). For service outside the U.S. and Canada, please call us at
USA 413.247.3380. You can also e-mail us at info@stiebel-eltron-usa.
com or fax us at 413.247.3369.

ENGLISH
WWW.STIEBEL-ELTRON-USA.COM DHC CLASSIC| 5
INSTALLATION
MOUNTING THE UNIT
INSTALLATION
5. Mounting the unit
D0000089950-a
6
5
13
2
7
4
1 Electrical junction box
2 1/2˝ water supply line for faucet installation
3 Shut-off valve
4 Cold water supply
5 Sink
6 Cold valve (right)
7 Hot valve (left)
DANGER: Electrocution The 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. Elec-
tric shock may result.
1. Install DHC Classic as close as possible to the hot water draw-
off point, for example, directly underneath the sink.
2. Install DHC Classic in a frost free area. If frost may occur, re-
move unit before freezing temperatures set in.
3. Leave a minimum of 5˝ of clearance on all sides for servicing.
4. Remove plastic cover by loosening the screw on the bottom.
Lift cover off from the bottom. When reinstalling, insert the top
of the cover into the rear housing first, then tilt the bottom into
place. Re-tighten the cover screw.
D0000089949-b
5. Mount the unit securely to wall by putting two screws through
the mounting holes. Screws and plastic wall anchors for
mounting on drywall or wood are provided.
D0000089951-a

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INSTALLATION
WATER CONNECTIONS
6. Water connections
!NOTICE:
Excessive heat from soldering on copper pipes near the DHC
Classic may cause damage.
The cold water connection to the unit must be disconnected
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.
1. All plumbing work must comply with national and applicable
state and local plumbing codes.
2. A pressure reducing valve must be installed if the cold water
supply pressure exceeds 150 psi (10 bar).
3. Make certain that the cold water supply line has been flushed
to remove any scale and dirt.
4. Install shut-off valve in cold water line as shown in illustration.
This allows the unit to be isolated for maintenance purposes.
5. Cold water connection (inlet) is on the right side of the unit, hot
water connection (outlet) is on the left side of unit.
6. Tankless water heaters such as the DHC Classic are not required
to be equipped with a Temperature and Pressure Relief Valve
(T&P). If the local inspector will not pass the installation with-
out a T&P, it should be installed on the hot water outlet side of
appliance.
7. The DHC Classic’s hot water outlet is designed for connection
to copper tubing, PEX tubing or a braided stainless steel hose
with a ½˝ NPT female tapered thread.
8. The plumbing on the cold water inlet side 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 braided steel
flex connector. If soldering near the unit is necessary, please
direct the flame away from the housing of the unit in order to
avoid damage. Note that excessive heat from soldering near
the cold water inlet fitting may damage the plastic filter screen
located inside it.
9. When all plumbing work is completed, check for leaks and take
corrective action before proceeding.
6.1 Aerator installation at connected faucet
DHC 3-1, 3-2, and 4-2 Classic models ship with a 0.5 gpm pressure
compensating flow-reducer/aerator that must be installed on the
faucet the water heater is connected to. Failure to install the aerator
may result in lower water temperatures than desired.
7. Electrical connection
DANGER: Electrocution Before beginning any work on the electric installation, be
sure that main breaker panel switches are “off” to avoid
any danger of electric shock. All mounting and plumb-
ing must be completed before proceeding with electri-
cal 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.
WARNING Electrocution
The connection to the power supply is only permissible
as a permanent connection in conjunction with a ¾˝
Romex clamp. 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.
1. All electrical work must comply with national and applicable
state and local electrical codes.
2. The DHC Classic should be connected to a properly grounded
dedicated branch circuit of proper voltage rating. In installa-
tions with several DHC Classic units, each unit requires an
independent circuit. Please refer to the technical data table for
the correct wire and circuit breaker size.
3. A ¾˝ Romex clamp (required, not supplied) should be installed
in the opening located between the hot and cold water con-
nections. The wire should be fed through the Romex clamp.
The “live” wires must be connected to the slots on the terminal
block marked N and L (DHC 3-1, 4-3, 6-3, 9-3 Classic only) or L
and L (all other versions). The ground wire must be connected
to the slot marked with the ground symbol.
2.2“ (56 mm)
D0000089948-a
4. Reinstall plastic cover. When reinstalling, insert the top of the
cover into the rear housing first, then tilt the bottom into place.
Re-tighten the cover screw.

ENGLISH
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INSTALLATION
COMMISSIONING
7.1 DHC 3-2, and DHC 4-2 @208 V electrical connec-
tion
A 3/8˝ diameter rubber grommet is supplied as part of the required
electrical installation with DHC 3-2 and DHC 4-2 Classic units.
1. When installing the DHC 3-2 Classic at either 208 or 240 V, or
the DHC 4-2 Classic at 208 V, first feed the 14 AWG wire through
the supplied rubber grommet. Prepare the wires according to
the diagram:
2.2˝ (56 mm)
B
C
2.2˝ (56 mm)
A
3/8˝diameter
grommet
2. A ¾˝ Romex clamp (required, not supplied) should be installed
in the opening located between the hot and cold water con-
nections. The wire with the rubber grommet in place should be
fed through the Romex clamp. The “live” wires must be con-
nected to the slots on the terminal block marked L and L. The
ground wire must be connected to slot marked with the ground
symbol.
3. Reinstall plastic cover. When reinstalling, insert the top of the
cover into the rear housing first, then tilt the bottom into place.
Re-tighten the cover screw.
7.2 Terminal block
Consult the chart below for the recommended torque amounts on
the terminal block screws.
Screw Size (mm) Min. Torque (N•cm) Min. Torque (lbf•in)
M5 150-200 13.3-17.7
Using the proper torque specifications to secure wire to the wiring
block helps to avoid personal loss or property damage.
8. Commissioning
!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 cover must be installed before the circuit breakers
are turned on.
1. Vent the air from pipes and the water heater by opening the
hot water faucet for a few minutes, until water flow is continu-
ous and all air is purged from the water pipes.
2. Turn on circuit breaker to bring electrical power to the unit.
3. Open hot water faucet to a degree so that water flow is typical,
i.e. until the water flow is the same as that encountered during
normal use.
4. Wait twenty seconds until temperature has stabilized. Then
check water temperature. If temperature is too low, the water
flow rate needs to be reduced. In order to do this, turn off
the unit’s circuit breaker, remove the cover and turn the flow
adjustment screw shown in illustration clockwise ½ turn (180
degrees) See 9.1, “Flow adjustment screw”, pg. 8. Then
reinstall plastic cover, turn on circuit breaker and check water
temperature. This procedure should be repeated until the de-
sired temperature is achieved. In case the water temperature
is too high, turn the flow adjustment screw counter clockwise
in the same manner until the desired temperature is achieved.
The arrows in the illustration refer to the water temperature.
5. In order to obtain temperature control at a single spout mixer-
type faucet, restrict cold water flow to faucet by partially clos-
ing the cold water shut-off valve under the sink until cold water
and hot water flow rates are approximately the same.
8.1 Water heater handover
Explain the functions of the water heater to the user. Draw special
attention to the safety information. Hand the operating and instal-
lation instructions to the user.

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INSTALLATION
TROUBLESHOOTING
9. Troubleshooting
Symptom Possible cause Solution
No hot water but audible click can be heard when
water is turned on.
Circuit breaker off Circuit breaker on
Safety thermal cut-out tripped Reset thermal cut-out
Heater may be undersized See 11.3, “Temperature increase above ambient water tem-
perature”, pg. 10
No hot water and no audible click can be heard when
water is turned on
Water flow too low to activate flow switch Clean faucet aerator
Open shut-off valve completely
Increase flow by opening flow adjustment screw (turn coun-
terclockwise)
Clean filter screen at DHC unit. See 10, “Normal maintenance”,
pg. 9
Water not warm enough Water flow too high
Reduce water flow by closing flow adjustment screw (turn
clockwise). See 11.3, “Temperature increase above ambient
water temperature”, pg. 10
Voltage too low Supply correct voltage to unit
If you are not able to resolve a problem please contact us toll free
at 800.582.8423 before removing the unit from the wall.
Stiebel Eltron is happy to provide technical assistance. In most in-
stances, we can resolve the problem over the phone.
9.1 Flow adjustment screw
To lower the water temperature or increase water flow, open the
flow adjustment screw by turning counterclockwise (-). This de-
creases the water temperature by increasing water volume.
To raise the water temperature or reduce water flow, close the flow
adjustment screw by turning clockwise (+). This increases the water
temperature by decreasing water volume.
26_02_02_1358
9.2 Safety thermal cut-out reset button
DANGER: Electrocution
Do not attempt to reset the safety thermal cutout of this
water heater unless power to the unit has been com-
pletely shut off at the circuit breakers.
26_02_02_1357

ENGLISH
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INSTALLATION
NORMAL MAINTENANCE
10. Normal maintenance
WARNING Electrocution
Before performing any work on the water heater, ensure
power to the unit has been completely shut off at the
circuit breaker.
!
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.
Note:
Other than the filter screen, the DHC Classic does not con-
tain any parts serviceable by the lay person. In case of mal-
function please contact a licensed plumber or electrician.
Stiebel Eltron DHC Classic tankless water heaters are designed for
a very long service life. Actual life expectancy will vary with water
quality and use. To ensure consistent water flow, it is recommended
to periodically remove scale and dirt that may build up at the aerator
of the faucet or in the shower head.
The DHC Classic has a built in sediment filter screen that should be
cleaned periodically:
fTurn off power to the water heater at the circuit breaker.
fTurn off the water supply to the water heater at the shut-off
valve.
fOpen a connected hot water tap to relieve built-up pressure
(this will minimize leakage when removing the connection from
the cold water inlet).
fDisconnect the braided steel flex connector from the cold water
inlet fitting (right).
fTo 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.
fClean the filter screen, re-insert securely into the cold water
inlet fitting, and reconnect the braid steel flex connector to the
cold water inlet.
fOpen the cold water supply shut-off valve.
fVent the air from pipes and the water heater by opening the
hot water faucet for a few minutes, until water flow is continu-
ous and all air is purged from the water pipes.
fTurn on circuit breaker to bring electrical power to the unit.
11. Technical Data
11.1 Dimensions
c06 c01
c01
c06
715/16Ý(202)
315/16Ý(100)
13/8Ý(35)
37/8Ý(98)
143/16Ý(360)
½Ý(13)
b01
19/16Ý(40)
Mounting holes, rear cover
125/8Ý(320)
D0000089946-c
b01 electrical supply cable
c01 cold water connection 1/2˝ NPT
c06 hot water connection 1/2˝ NPT

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INSTALLATION
TECHNICAL DATA
11.2 Wiring diagrams
DHC 3-2 Classic, DHC 4-2 Classic, DHC 5-2 Classic
A 2/GND ~ 208 / 240 V
DHC 4-3 Classic
B 1/N/GND ~ 277 V
LL
A
V
NL
B
85_02_02_0008
DHC 6-2 Classic, DHC 8-2 Classic, DHC 10-2 Classic
A 2/GND ~ 208 / 240 V
DHC 6-3 Classic, DHC 9-3 Classic
B 1/N/GND ~ 277 V
DHC 3-1 Classic
B 1/N/GND ~ 120V
V
LL
NL
85_02_02_0009
A
B
11.3 Temperature increase above ambient water tem-
perature
[ °F ]
Type kW GPM (gallons per minute)
0.32 0.43 0.48 0.53 0.69 0.80 1.0 1.5 2.0
DHC 3-1 3.0 65 49 43 41 30 26 20 14 10
DHC 3-2 2.5 54 40 35 34 25 21 17 11 9
3.3 71 53 47 45 33 28 22 15 11
DHC 4-2 2.9 –47 41 40 29 25 20 13 10
3.8 –61 54 52 38 33 26 17 13
DHC 4-3 4.5 –73 64 61 45 39 31 20 15
DHC 5-2 3.6 –58 51 49 36 31 25 16 12
4.8 –77 68 65 48 41 33 22 16
DHC 6-2 4.5 – – 64 61 45 39 31 20 15
6.0 – – 85 82 60 52 41 27 20
DHC 6-3 6.0 – – 85 82 60 52 41 27 20
DHC 8-2 5.4 ––––54 46 37 25 18
7.2 ––––71 62 49 33 25
DHC 9-3 9.0 -----77 58 41 31
DHC 10-2 7.2 – – - – – 62 49 33 25
9.6 – – - – – 82 65 44 33
Min. water flow to activate unit
[ °C ]
Type kW l/min (liters per minute)
1.2 1.6 1.8 2.0 2.6 3.0 4.0 5.0 7.5
DHC 3-1 3.0 36 27 24 22 17 14 11 9 6
DHC 3-2 2.5 30 22 20 18 14 12 975
3.3 39 30 26 24 18 16 12 9 6
DHC 4-2 2.9 –26 23 21 16 14 10 8 6
3.8 –34 30 27 21 18 14 11 7
DHC 4-3 4.5 –40 36 32 25 22 16 13 9
DHC 5-2 3.6 –32 29 26 20 17 13 10 7
4.8 –43 38 34 26 23 17 14 9
DHC 6-2 4.5 – – 36 32 25 22 16 13 9
6.0 – – 48 43 33 29 22 17 11
DHC 6-3 6.0 – – 48 43 33 29 22 17 11
DHC 8-2 5.4 ––––30 26 19 15 10
7.2 ––––40 34 26 21 14
DHC 9-3 9.0 -----43 32 26 17
DHC 10-2 7.2 –––––34 26 21 14
9.6 –––––46 34 28 18
Min. water flow to activate unit

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WWW.STIEBEL-ELTRON-USA.COM DHC CLASSIC| 11
INSTALLATION
TECHNICAL DATA
11.4 Data tables
DHC 3-1 Classic DHC 3-2 Classic DHC 4-2 Classic DHC 4-3 Classic DHC 5-2 Classic
202646 202647 202648 202649 202650
Electrical details
Voltage 120 V 208 V 240 V 208 V 240 V 277 V 208 V 240 V
Wattage 3.0 kW 2.5 kW 3.3 kW 2.9 kW 3.8 kW 4.5 kW 3.6 kW 4.8 kW
Amperage 25 A 12 A 14 A 14 A 16 A 17 A 18 A 20 A
Minimum recommended circuit
breaker size1 25 A 15 A 15 A 15 A 20 A 20 A 20 A 20 A
Minimum recommended wire
size (copper)2 10 AWG 14 AWG 14 AWG 12 AWG 12 AWG 12 AWG
Power connection 1/N/GND 2/GND 2/GND 1/N/GND 2/GND
Connections
Water connection31/2˝ NPT
Total alkaline earths 2.5 mol/m³
Total hardness (H2O) 14 Degree d
Hardness range 2 (average hardness)
Hydraulic data
Rated capacity 0.13 gal (0.5 l)
Values
Max. permissible inlet temp. 86°F (30°C)
Min. water flow to activate unit 0.32 gpm (1.2 l/min)0.32 gpm (1.2 l/min)0.43 gpm (1.6 l/min)0.43 gpm (1.6 l/min)0.43 gpm (1.6 l/min)
Pressure drop at flow rate 3.33 psi (0.023 MPa)3.33 psi (0.023 MPa)3.33 psi (0.023 MPa)3.33 psi (0.023 MPa)3.33 psi (0.023 MPa)
Flow rate for pressure drop 0.32 gpm (1.2 l/min)0.32 gpm (1.2 l/min)0.43 gpm (1.6 l/min)0.43 gpm (1.6 l/min)0.43 gpm (1.6 l/min)
Application limits
Max. permissible pressure 150 psi (1 MPa)
Test pressure 300 psi (2 MPa)
Versions
Pressure vessel material Copper
Heating system Tubular heater
Cover and back panel Plastic
Color White
Dimensions
Height 143/16 in (360 mm)
Width 715/16 in (202 mm)
Depth 37/8in (98 mm)
Weights
Weight 5.5 lb (2.5 kg)4.6 lb (2.1 kg)4.6 lb (2.1 kg)4.6 lb (2.1 kg)4.6 lb (2.1 kg)
DHC 3-1, 3-2, 4-2 Classic ship with a 0.5 GPM pressure compensating flow-reducer/aerator that must be installed.
1Overcurrent protection sized at 100% of load (DP for 240/208/277 V & SP for 120 V models). Tankless water heaters are considered a non-continuous load.
GFCI Class A circuit breakers are recommended.
2Copper must be used. Conductors should be sized to maintain a voltage drop of less than 3% under load.
3Suitable for supply with cold water only.
These are our recommendations. Check local codes for compliance if necessary.

12| DHC CLASSIC WWW.STIEBEL-ELTRON-USA.COM
INSTALLATION
TECHNICAL DATA
DHC 6-2 Classic DHC 6-3 Classic DHC 8-2 Classic DHC 9-3 Classic DHC 10-2 Classic
202651 202652 202653 202654 202655
Electrical details
Voltage 208 V 240 V 277 V 208 V 240 V 277 V 208 V 240 V
Wattage 4.5 kW 6.0 kW 6.0 kW 5.4 kW 7.2 kW 9.0 kW 7.2 kW 9.6 kW
Amperage 22 A 25 A 21.7 A 26 A 30 A 32.5 A 35 A 40 A
Min. recommended circuit
breaker size1 25 A 25 A 25 A 30 A 30 A 35 A 35 A 40 A
Min. recommended wire size
(copper)2 10 AWG 10 AWG 10 AWG 8AWG 8AWG
Power connection 2/GND 1/N/GND 2/GND 1/N/GND 2/GND
Connections
Water connection31/2˝ NPT
Total alkaline earths 2.5 mol/m³
Total hardness (H2O) 14 Degree d
Hardness range 2 (average hardness)
Hydraulic data
Rated capacity 0.13 gal (0.5 l)
Values
Max. permissible inlet temp. 86°F (30°C)
Min. water flow to activate unit 0.48 gpm (1.8 l/min)0.48 gpm (1.8 l/min)0.69 gpm (2.6 l/min)0.8 gpm (3.0 l/min)0.8 gpm (3.0 l/min)
Pressure drop at flow rate 3.33 psi (0.023 MPa)3.33 psi (0.022 MPa)3.63 psi (0.025 MPa)4.35 psi (0.03 MPa)4.35 psi (0.03 MPa)
Flow rate for pressure drop 0.48 gpm (1.8 l/min)0.48 gpm (1.8 l/min)0.69 gpm (2.6 l/min)0.8 gpm (3.0 l/min)0.8 gpm (3.0 l/min)
Application limits
Max. permissible pressure 150 psi (1 MPa)
Test pressure 300 psi (2 MPa)
Versions
Pressure vessel material Copper
Heating system Tubular heater
Cover and back panel Plastic
Color White
Dimensions
Height 143/16 in (360 mm)
Width 715/16 in (202 mm)
Depth 37/8in (98 mm)
Weights
Weight 5.5 lb (2.5 kg)
1Overcurrent protection sized at 100% of load (DP for 240/208/277 V & SP for 120 V models). Tankless water heaters are considered a non-continuous load.
GFCI Class A circuit breakers are recommended.
2Copper must be used. Conductors should be sized to maintain a voltage drop of less than 3% under load.
3Suitable for supply with cold water only.
These are our recommendations. Check local codes for compliance if necessary.

ENGLISH
WWW.STIEBEL-ELTRON-USA.COM DHC CLASSIC| 13
INSTALLATION
SPARE PARTS
12. Spare parts
No. Spare part DHC 3-1 Classic DHC 3-2 Classic DHC 4-2 Classic DHC 4-3 Classic DHC 5-2 Classic
1Heating system 165889 167769 167770 165890 167771
2Flow switch 165273 165273 162162 162162 162162
3Thermostat 162472 162472 162472 162472 162472
4Switch 168026 168026 168026 168026 168026
5Housing (back) 326968 326968 326968 326968 326968
6Plumbing connection 326589 326589 326589 326589 326589
7Housing (front) 326965 326965 326965 326965 326965
8Safety thermal cut-out 162474 162474 162474 162474 162474
9Wiring block 026010 026010 026010 026010 026010
10 Copper tube 162314 162314 162314 162314 162314
11 Module chassis 342052 342052 342052 342052 342052
12 Locking sheet 326234 326234 326234 326234 326234
13 Filter screen 275981 275981 275981 275981 275981
No. Spare part DHC 6-2 Classic DHC 6-3 Classic DHC 8-2 Classic DHC 9-3 Classic DHC 10-2 Classic
1Heating system 171117 342051 167772 296874 167773
2Flow switch 171105 171105 162164 162165 162165
3Thermostat 162472 162472 162472 162472 162472
4Switch 168026 168026 168026 168026 168026
5Housing (back) 326968 326968 326968 326968 326968
6Plumbing connection 326589 326589 326589 326589 326589
7Housing (front) 326965 326965 326965 326965 326965
8Safety thermal cut-out 162474 162474 162474 162474 162474
9Wiring block 026010 026010 026010 026010 026010
10 Copper tube 162314 162314 162314 162314 162314
11 Module chassis 342052 342052 342052 342052 342052
12 Locking sheet 326234 326234 326234 326234 326234
13 Filter screen 275981 275981 275981 275981 275981
D0000089953-f
4
7
1
3
2
10
5
6
13
9
8
11
12

14| DHC CLASSIC WWW.STIEBEL-ELTRON-USA.COM
WARRANTY | ENVIRONMENT AND RECYCLING
Subject to the terms and conditions set forth in this limited
warranty, Stiebel Eltron, Inc. (the “Manufacturer”) hereby
warrants to the original purchaser (the “Owner”) that each
Tankless Electric Domestic Hot Water Heater (the “Heater”)
shall not (i) leak due to defects in the Manufacturer’s
materials or workmanship for a period of seven (7) years
from the date of purchase or (ii) fail due to defects in the
Manufacturer’s materials or workmanship for a period of
three (3) years from the date of purchase. As Owner’s sole
and exclusive remedy for breach of the above warranty,
Manufacturer shall, at the Manufacturer’s discretion,
send replacement parts for local repair; retrieve the unit
for factory repair, or replace the defective Heater with a
replacement unit with comparable operating features.
Manufacturer’s maximum liability under all circumstances
shall be limited to the Owner’s purchase price for the
Heater.
This limited warranty shall be the exclusive warranty
made by the Manufacturer and is made in lieu of all other
warranties, express or implied, whether written or oral,
including, but not limited to warranties of merchantability
and fitness for a particular purpose. Manufacturer shall
not be liable for incidental, consequential or contingent
damages or expenses arising directly or indirectly from any
defect in the Heater or the use of the Heater. Manufacturer
shall not be liable for any water damage or other damage
to property of Owner arising, directly or indirectly,
from any defect in the Heater or the use of the Heater.
Manufacturer alone is authorized to make all warranties
on Manufacturer’s behalf and no statement, warranty or
guarantee made by any other party shall be binding on
Manufacturer.
Manufacturer shall not be liable for any damage
whatsoever relating to or caused by:
1. any misuse or neglect of the Heater, any accident to
the Heater, any alteration of the Heater, or any other
unintended use;
2. acts of God and circumstances over
which Manufacturer has no control;
3. installation of the Heater other than as directed by
Manufacturer and other than in accordance with
applicable building codes;
4. failure to maintain the Heater or to operate the Heater
in accordance with the Manufacturer’s specifications;
5. operation of the Heater under fluctuating water
pressure or in the event the Heater is supplied with
non-potable water, for any duration;
6. improper installation and/or improper materials used
by any installer and not relating to defects in parts or
workmanship of Manufacturer;
7. moving the Heater from its original place of installation;
8. exposure to freezing conditions;
9. water quality issues such as corrosive water, hard water,
and water contaminated with pollutants or additives;
Should owner wish to return the Heater to manufacturer
for repair or replacement under this warranty, Owner
must first secure written authorization from Manufacturer.
Owner shall demonstrate proof of purchase, including a
purchase date, and shall be responsible for all removal
and transportation costs. If Owner cannot demonstrate a
purchase date this warranty shall be limited to the period
beginning from the date of manufacture stamped on the
Heater. Manufacturer reserves the right to deny warranty
coverage upon Manufacturer’s examination of Heater.
This warranty is restricted to the Owner and cannot be
assigned.
Some States and Provinces do not allow the exclusion
or limitation of certain warranties. In such cases, the
limitations set forth herein may not apply to the Owner. In
such cases this warranty shall be limited to the shortest
period and lowest damage amounts allowed by law. This
warranty gives you specific legal rights and you may also
have other rights which vary from State to State or Province
to Province.
Owner shall be responsible for all labor and other charges
incurred in the removal or repair of the Heater in the field.
Please also note that the Heater must be installed in such a
manner that if any leak does occur, the flow of water from
any leak will not damage the area in which it is installed.
This Warranty is valid for U.S.A. & Canada only. Warranties may
vary by country. Please consult your local Stiebel Eltron Repre-
sentative for the Warranty for your country.
!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.
13. Warranty

ENGLISH
WWW.STIEBEL-ELTRON-USA.COM DHC CLASSIC| 15
NOTES

16| DHC CLASSIC WWW.STIEBEL-ELTRON-USA.COM
ÍNDICE|OPERACIÓN
INFORMACIÓN ESPECIAL
OPERACIÓN
1. Indicaciones generales _______________________________________ 17
1.1 Indicaciones para el cableado:__________________________________17
1.2 Otras marcas presentes en este documento _________________17
2. Seguridad ______________________________________________________ 17
2.1 Uso previsto_________________________________________________________17
2.2 Información general ______________________________________________17
2.3 Medidas de seguridad ____________________________________________18
2.4 Sello de certificación______________________________________________18
3. Registre su producto _________________________________________18
4. Recomendaciones generales_________________________________18
INSTALACIÓN
5. Instalación física ______________________________________________ 19
6. Conexión de agua _____________________________________________20
6.1 Instalación del aireador en el grifo conectado ______________20
7. Conexión eléctrica ____________________________________________20
7.1 Conexión eléctrica DHC 3-2, y DHC 4-2 a 208 V ______________21
7.2 Bloque de terminales _____________________________________________21
8. Operación de la unidad_______________________________________21
9. Resolución de incidencias (troubleshooting)_______________22
10. Mantenimiento ________________________________________________23
11. Datos técnicos _________________________________________________23
11.1 Plano dimensional_________________________________________________23
11.2 Diagramas eléctricos______________________________________________24
11.3 Aumento de temperatura del agua ____________________________25
11.4 Tabla de especificaciones ________________________________________26
12. Piezas de recambio ___________________________________________28
13. Garantía ________________________________________________________29
INFORMACIÓN ESPE-
CIAL
- Lea todo este manual. El incumplimiento de todas las guías,
instrucciones y reglas puede causar lesiones personales o
daños a la propiedad. La instalación, el ajuste, la alteración, el
servicio y el uso incorrectos de esta unidad pueden provocar
lesiones graves.
- Esta unidad debe ser instalada por un electricista y plomero
con licencia. La instalación debe cumplir con todos los códi-
gos de plomería y electricidad nacionales, estatales y locales.
La instalación correcta es responsabilidad del instalador. El
incumplimiento de las instrucciones de instalación y funciona-
miento o el uso incorrecto anula la garantía.
- Guarde estas instrucciones para referencia futura. El instalador
debe dejar estas instrucciones con el consumidor.
- Si tiene alguna pregunta sobre la instalación, el uso o el fun-
cionamiento de este calentador de agua, o si necesita manua-
les de instalación adicionales, llame a nuestra línea de servicio
técnico al 800.582.8423 (solo EE. UU. Y Canadá). Si llama desde
fuera de los EE. UU. O Canadá, llame al 413.247.3380 de EE. UU.
Y lo derivaremos a un representante de servicio calificado de
Stiebel Eltron en su área.
- El calentador de agua puede ser utilizado por niños de 3 años
en adelante y personas con capacidades físicas, sensoriales
o mentales reducidas o falta de experiencia y conocimiento,
siempre que estén supervisados o se les haya enseñado cómo
usar el calentador de agua de manera segura. y he entendido
los riesgos potenciales. Los niños nunca deben jugar con el ca-
lentador de agua. Los niños nunca deben limpiar el calentador
de agua ni realizar el mantenimiento del usuario a menos que
estén supervisados.
- Asegúrese de que el calentador de agua pueda separarse de la
fuente de alimentación mediante un disyuntor que desconecta
todos los polos con una separación de contacto de al menos
1/8 pulg. (3 mm).
- El voltaje especificado debe coincidir con la fuente de alimen-
tación. Consulte la placa de características en el lado derecho
del calentador de agua para obtener información completa.
- El calentador de agua debe estar correctamente conectado a
tierra. Ver sección 11.2, “Diagramas eléctricos”11.2, pág. 24.
- El calentador de agua debe estar conectado permanentemente
a un cableado fijo. Para usar solo en un circuito derivado indi-
vidual. See 11.2, “Diagramas eléctricos”, pg. 24.
- Asegure el calentador de agua como se describe en sección 5,
“Instalación física”, pg. 19.
- Observe la presión máxima permitida. (See 11.4, “Tabla de es-
pecificaciones”, pg. 26).

OPERACIÓN
INDICACIONES GENERALES
ESPAÑOL
WWW.STIEBEL-ELTRON-USA.COM DHC CLASSIC| 17
OPERACIÓN
1. Indicaciones generales
Indicación:
Lea atentamente estas instrucciones antes de utilizar el
aparato y familiarícese con sus funciones. Conserve este
manual en un lugar seguro. Si entregara este aparato a
otros usuarios no olvide incluir el manual.
1.1 Indicaciones para el cableado:
1.1.1 Estructura de las indicaciones de seguridad
ADVERTENCIA: De tipo de peligro
Aquí aparecen las posibles consecuencias del desobe-
decimiento de las indicaciones de seguridad.
f Se indican las medidas necesarias para evitar
estos peligros.
1.1.2 Símbolos, tipo de peligro
Símbolo Tipo de peligro
!Lesión
Electrocución
Quemadura o escaldamiento
1.1.3 Palabras clave
PALABRA CLAVE Descripción
PELIGRO El desobedecimiento de esta información conlleva gra-
ves lesiones o la muerte
w El desobedecimiento de esta información puede conlle-
var graves lesiones o la muerte
ATENCIÓN El desobedecimiento de esta información puede conlle-
var lesiones de mediana gravedad o lesiones leves
1.2 Otras marcas presentes en este documento
Indicación:
La indicación está limitada por líneas horizontales sobre y
bajo el texto. La información general se señaliza mediante
el símbolo que se muestra a la izquierda.
f Lea atentamente las indicaciones.
Símbolo
!Daños en el aparato y al medio ambiente
Eliminación del aparato
f Este símbolo indica que debe usted hacer algo. Lo que debe
hacer se describe en pasos individuales.
2. Seguridad
Observe las siguientes indicaciones y normas de seguridad.
El equipo sólo debe utilizarse después de haber sido instalado com-
pletamente y con todos los dispositivos de seguridad.
2.1 Uso previsto
El aparato está previsto para el calentamiento del agua potable y
puede abastecer una punto de extracción.
El uso fuera de las especificaciones descritas se considera indebido.
Además, el obedecimiento de las presentes instrucciones forma
parte del uso previsto de este aparato.
2.2 Información general
El aparato está previsto para utilizarse en un ámbito doméstico. Per-
sonas no instruidas lo pueden manejar de forma segura. El aparato
puede utilizarse igualmente en ámbitos que no sean domésticos,
como en pequeñas empresas, siempre que se maneje del mismo
modo.
Lea el manual íntegramente. El desobedecimiento de las normas,
instrucciones y reglamentos puede causar lesiones físicas a per-
sonas y/o daños materiales. La instalación, ajuste, modificación y
mantenimiento incorrectos del presente aparato puede conducir a
lesiones físicas considerables.
Este aparato debe ser instalado por un técnico autorizado. La insta-
lación debe cumplir toda la normativa nacional, regional y local. El
técnico especializado es responsable de la correcta instalación. El
desobedecimiento de las instrucciones de instalación y operación o
el uso indebido conducen a la anulación de la garantía.
Guarde el presente manual para futuras consultas. El técnico espe-
cializado debe entregar este manual al usuario.
En caso de cualquier consulta relativa a la instalación, uso u opera-
ción del presente calentador o, si fuera preciso en relación a cual-

18| DHC CLASSIC WWW.STIEBEL-ELTRON-USA.COM
INSTALACIÓN
REGISTRE SU PRODUCTO
quier otro manual de instalación, diríjase al teléfono de servicio
técnico (véase última página).
2.3 Medidas de seguridad
!ADVERTENCIA: Peligro de lesiones
Lea y obedezca las siguientes instrucciones.
El desobedecimiento de esta información puede conlle-
var graves lesiones o la muerte.
!
Daños en el aparato y al medio ambiente:
Este aparato debe ser instalado por un técnico autorizado.
La instalación debe cumplir toda la normativa nacional,
regional y local.
El mantenimiento del aparato debe ser realizado por téc-
nicos autorizados.
PELIGRO: Electrocución
Antes de llevar a cabo cualquier tarea de instalación,
ajuste, modificación o mantenimiento de este aparato
deben desconectarse todos los interruptores de poten-
cia y seccionadores de alimentación eléctrica del apara-
to. El desobedecimiento de estas indicaciones puede
conllevar graves lesiones o la muerte.
PELIGRO: Electrocución
El aparato debe conectarse a tierra adecuadamente. Si
no se conecta a tierra el producto pueden producirse
graves lesiones físicas o incluso la muerte.
PELIGRO: Quemaduras
Las temperaturas del agua que superen los 125°F (52
°C) pueden causar quemaduras graves repentinas o in-
cluso la muerte por escaldamiento. El peligro de escal-
damiento con agua caliente existe si el termostato del
aparato presenta un ajuste demasiado alto. En hogares
con niños pequeños, personas discapacitadas o perso-
nas mayores puede ser necesario ajustar el termostato
a 113°F (45 °C) o menos para evitar lesiones físicas por
agua caliente.
!ADVERTENCIA: Peligro de lesiones
El aparato puede ser utilizado por niños a partir de 8
años, así como personas con capacidades físicas, senso-
riales o mentales limitadas, o con falta de experiencia y
conocimientos, solo bajo la vigilancia de otra persona o
si antes han recibido instrucciones sobre el uso seguro
del aparato y han comprendido los peligros que pueden
derivarse. No deje que los niños jueguen con el aparato.
Las tareas de limpieza y mantenimiento propias del
usuario no deben ser realizadas por niños sin vigilancia.
2.4 Sello de certificación
- UL (E.E.U.U.) Est. 499
- CSA (Canadá) Est. E335-1/3E, y CSA E60335-2-35
3. Registre su producto
Nota:
Debe registrar este producto en un plazo de 90 días desde
la compra a través de nuestra página web para activar
cualquier garantía estándar o para optar a la ampliación
de la garantía. Visite nuestra página web www.stiebel-
eltron-usa.com y haga clic en “Registre su producto”.
Antes de comenzar el proceso de registro, le sugerimos que re-
copile la siguiente información que necesitará:
Modelo, ejemplo: DHC Classic
Número que se indica después de “Nr.”
Lugar de compra
Fecha de compra
Nombre y apellido
Dirección de email
Dirección postal
Número de teléfono
Fecha de instalación
Si tiene alguna pregunta en relación con el proceso de registro
o con las opciones de garantía, por favor, póngase en contacto
directamente con Stiebel Eltron USA en el número de teléfono
(800)-582-8423.
4. Recomendaciones generales
Los calentadores de agua DHC Classic difieren de los calentadores
de tanque en muchas maneras. Este calentador no almacena agua
caliente. Al contrario, calienta el agua instantáneamente cuando
esta fluye a través de la unidad. El poderoso elemento que calienta,
es activado solamente cuando se abre una llave de agua caliente la
cual esta conectada al sistema alimentado por el calentador.
Usos
Los calentadores eléctricos DHC Classic son ideales para el uso en
casas, apartamentos o cabañas en áreas de un clima subtropical y
tropical como el Caribe, muchas partes de México, Centro América
y América del Sur.
Los modelos DHC Classic ocupan muy poco espacio, son fáciles de
instalar y proveen agua caliente continua y sin limite. Se pueden
usar con sistemas eléctricos bien sea de 60 Hz o de 50 Hz.
La unidad se activa solo cuando hay demanda para agua caliente,
evitando así, consumo y gasto innecesario de energía eléctrica y
de agua.
Los importantes ahorros en el consumo de electricidad que ofre-
cen los modelos DHC Classic pueden llegar hasta un 50 % cuando
se comparan con el consumo de los calentadores eléctricos tipo
“tanque.”

ESPAÑOL
WWW.STIEBEL-ELTRON-USA.COM DHC CLASSIC | 19
INSTALACIÓN
INSTALACIÓN FÍSICA
INSTALACIÓN
5. Instalación física
D0000089950-a
6
5
13
2
7
4
1 Caja eléctrica
2 Linea de agua, ½ pulg.
3 Válvula de servicio
4 Suministro de agua fría
5 Lavamanos
6 Válvula de agua fría
7 Válvula de agua caliente
PELIGRO: Electrocución
El aparato debe conectarse a tierra adecuadamente. Si
no se conecta a tierra el producto pueden producirse
graves lesiones físicas o incluso la muerte.
PELIGRO: Electrocución
La unidad debe instalarse en posición vertical con las
conexiones de agua en la parte de abajo. No instale la
unidad donde pueda mojarse, esto podría ocasionar
una descarga eléctrica.
1. Instale DHC Classic lo más cerca posible del punto de extracción
de agua caliente, por ejemplo, directamente debajo del lavabo.
2. Instale DHC Classic en un área libre de heladas. Si se produce
escarcha, retire la unidad antes de que se establezcan las tem-
peraturas de congelación.
3. Deje un mínimo de 5 pulg. de espacio libre en todos los lados
para el servicio.
4. Retire la cubierta de plástico desenroscando el tornillo en la
parte inferior. Levante la cubierta desde la parte inferior. Al re-
emplazarlo, inserte primero la parte superior de la cubierta en
la carcasa trasera, luego incline la parte inferior hacia su lugar.
Vuelva a apretar el tornillo de la tapa.
D0000089949-b
5. Monte la unidad de forma segura en la pared colocando dos
tornillos a través de los agujeros de montaje. Se proporcionan
tornillos y anclajes de plástico para montaje en paneles de yeso
o madera.
D0000089951-a
D0000089952-a

20| DHC CLASSIC WWW.STIEBEL-ELTRON-USA.COM
INSTALACIÓN
CONEXIÓN DE AGUA
6. Conexión de agua
!
NOTA:
Calor excesivo de las soldaduras en las lineas de cobre
puede causar daños al calentador.
La conexión de agua fría a la unidad debe desconectarse
periódicamente para limpiar la pantalla del filtro. Se re-
quiere el uso de conexiones de agua que sean fácilmen-
te desmontables, como los conectores flexibles de acero
trenzado.
!
NOTA:
El agua dura o con un alto recuento de minerales puede
dañar la unidad. El daño a la unidad causado por la incrus-
tación o un alto recuento de minerales no está cubierto
por la garantía.
1. Todo trabajo de plomería debe cumplir con los códigos de plo-
mería. Nacional y/o Local.
2. Una válvula reductora de presión debe ser instalada si la línea
de suplido de agua excede una presión de 150 psi (10.3 bar).
3. Asegúrese de dejar correr el agua por la línea de suplido antes
de cualquier conexión para eliminar cualquier depósito o sucio
en la misma.
4. Instalar válvula de servicio en línea de suplido de agua. Esto
permite aislar la unidad para propósitos de mantenimiento.
5. Conexión de agua de suplido (entrada) es al lado derecho de la
unidad. La conexión de agua caliente (salida) debe ser al lado
izquierdo de la unidad.
6. El calentador de agua DHC Classic no requiere una válvula de
alivio por temperatura y presión (T y P). Si el inspector la re-
quiere se debe instalarla después de la salida de agua caliente
de la unidad.
7. La salida de agua caliente del DHC Classic está diseñada para
conectarse a tubos de cobre, tubos PEX o una manguera de
acero inoxidable trenzada con una rosca cónica hembra de 1/2
pulg. NPT.
8. La conexión de agua fría a la unidad esta sujeta a ser desco-
nectada periódicamente par poder limpiar el pequeño filtro
/ malla que se encuentra adentro de la misma. Sugerimos
utilizar conexiones, uniones de tope y mangueras flexibles,
resistentes al agua caliente, que permitan hacer tal servicio de
mantenimiento preventivo. Si es necesario realizar cualquier
trabajo de soldadura cerca de la unidad dirija la llama apar-
tándola de la carcasa de la unidad para evitar que se produz-
can daños.
9. Una vez realizados todos los trabajos de fontanería, revise la
instalación para comprobar si existen fugas y tome medidas
correctivas antes de comenzar a utilizar la unidad.
6.1 Instalación del aireador en el grifo conectado
Los modelos DHC 3-1, 3-2 y 4-2 Classic se envían con un reductor
/ aireador de flujo de compensación de presión de 0.5 gpm que
debe instalarse en el grifo al que está conectado el calentador de
agua. Si no se instala el aireador, la temperatura del agua puede
ser inferior a la deseada.
7. Conexión eléctrica
PELIGRO: Electrocución
Antes de comenzar la instalación eléctrica asegúrese de
que el interruptor termomagnético principal del panel
eléctrico este apagado para evitar posible descarga
eléctrica.
NOTA:
Toda instalación eléctrica y de plomería debe comple-
tarse antes de encender el interruptor termomagnético
principal. El circuito debe ser equipado con un interrup-
tor de conexión a tierra (“ground fault interrupter”)
cuando sea requerido por el código eléctrico nacional
y/o local.
1. Todo trabajo eléctrico debe cumplir con las disposiciones
del Colegio de Peritos Electricistas y Códigos Nacionales y/o
Locales.
2. La unidad DHC Classic debe tener su circuito independiente
utilizando tres alambres de cobre de tamaño apropiado y pro-
tegido por un interruptor termomagnético (breaker) correcta-
mente seleccionado. Para instalar varias unidades DHC Classic
se requiere un circuito independiente para cada una.
3. Se debe instalar una abrazadera ¾ pulg. Romex (requerida,
no suministrada) en la abertura ubicada entre las conexiones
de agua fría y caliente. Los cables deben alimentarse a través
de la abrazadera Romex, que también proporcionará un alivio
de tensión adecuado. Los cables “activos” deben conectarse a
las ranuras del bloque de terminales marcadas con N y L (DHC
3-1, 4-3, 6-3, 9-3 Classic solamente) o L y L (todas las demás
versiones). El cable de tierra debe estar conectado a la ranura
marcada con el símbolo de tierra.
4. Reinstalar la cubierta plástica. Al volver a instalar, inserte
primero la parte superior de la cubierta en la carcasa trasera,
luego incline la parte inferior en su lugar. Vuelva a apretar el
tornillo de la tapa.
2.2“ (56 mm)
D0000089948-a
PELIGRO: Electrocución
Como cualquier otro aparato eléctrico el no conectarlo a
tierra puede resultar en una descarga eléctrica, grave
lesión y/o incluso ocasionar muerte.