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Proven Point-of-Use Dependability
Exclusive copper-clad
heating element
DHC Series
POINT-OF-USE
TANKLESS ELECTRIC WATER HEATERS
800.582.8423
› Unlimited Supply of Hot Water
› Hydraulically Controlled for Quiet Operation
› Sleek Design Saves Space
› Major Energy Savings
› Proven Reliability
www.stiebel-eltron-usa.com
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Ideal For All Point-of-Use Water Heating Applications
Stiebel Eltron DHC tankless electric water heaters are the ideal choice for all
point-of-use hand washing applications:
Commercial › Industrial › Institutional Residential
›
Office buildings
› Stores
› Malls
› Warehouses
› Restaurants
Stiebel Eltron DHC tankless water heaters
are designed for installation at the point-ofuse. The DHC heats water instantaneously
as it flows through the unit. Stand-by heat
losses are completely eliminated.
› Gas stations
› Schools
› Hotels/Motels
› Commercial condominiums
› Manufacturing facilities
Copper heating
› Bathroom sinks
› Kitchen sinks
› Laundry areas
› Cabins/cottages
system
The heating element is controlled by a
flow switch which means a DHC can never
dry-fire and fail prematurely. And since all
DHCs are hydraulically controlled, operation
is quiet. DHC water heaters are equipped
with a safety high-limit with manual reset.
The rugged all copper design ensures many
years of reliable service.
DHC 3-1, DHC 3-2 and DHC 4-2 models
are shipped with 0.5 GPM pressure
compensating flow reducer/aerators that
fit on most faucets. Flow controls and
faucet aerators are highly recommended in
conjunction with tankless water heaters. No
pressure relief valve, drains, or circulating
pumps needed.
Safety thermal
cut-out
Flow switch
Wiring block
Cold water
connection
Hot water
connection
Engineer’s Specifications: The tankless electric water heater shall be equipped
with a copper sheathed heating element housed in a copper cylinder. The flow
switch that operates the heating element shall be of the mechanical pressure
differential type. The unit shall be equipped with a safety high-limit switch with
manual reset. An integral tamper-proof flow adjustment screw shall be provided
for the installer so that water flow rates can easily be adjusted. The water connections shall be designed for ½˝ NPT female adapter. The housing shall be made of
high impact polycarbonate plastic.
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Flow
R
Std.
High
DHC Sizing Guide
GPM
0.5
1.0
DHC 3-1 DHC 3-2 DHC 4-2
120 V
Minimum 25 A
circuit breaker
240 V
Minimum 15 A
circuit breaker
Single Sink Tankless Electric Water Heater
DHC MODEL
240 V
Minimum 20 A
circuit breaker
DHC 4-3
277 V
Minimum 20 A
circuit breaker
240 V
Minimum 20 A
circuit breaker
DHC 6-2 DHC 8-2 DHC 9-3 DHC 10-2DHC 5-2
240 V
Minimum 25 A
circuit breaker
240 V
Minimum 30 A
circuit breaker
Minimum 35 A
circuit breaker
277 V
240 V
Minimum 40 A
circuit breaker
code
Low
Std.
2.0
1.0
2.0
Non-
LAVATORY SINK
KITCHEN SINK
Utility /
Janitor’s
1.0 -2.0
Sink
DHC 3-1, 3-2, 4-2 ship with a 0.5 GPM pressure compensating flow reducer/aerator that must be installed.
Depend on them!
› Exclusive copper-clad
heating element
› Hydraulically controlled for
virtually silent operation
› Never dry fires and fails
prematurely
› Superior reliability
AK
BC
AB
WA
OR
CA
MT
ID
NV
UT
AZ
HI
Cool (Northern) Climate
Inlet water 45°F - 55°F
SK
MB
ND
MN
SD
WY
CO
NM
WI
IA
NE
KS
MO
OK
AR
LA
TX
ON
IL
MS
QC
MI
PA
OH
IN
WV
VA
KY
NC
TN
SC
AL
GA
FL
PE
NB
NS
ME
VT
NH
MA
NY
RI
CT
NJ
DE
MD
7 years leakage/
3 years par ts.
Complete warranty
online.
Conforms to ANSI/UL
Std. 499
Certified to CAN/CSA
E335-1 & E335-2-35
Tested and certified
by WQA against NSF/
ANSI 372 for lead free
compliance.
Warm (Southern) Climate
Inlet water 55°F - 70°F
ecommendations for 240 V models are correct if installed with 240 V service.
Increase one model size if unit will be installed with 208 V service.
Call Stiebel Eltron at 800.582.8423 if you have any sizing questions, or if you have any out-of-the-ordinary
situation. Stiebel Eltron service representatives can make recommendations on sizing, or provide
assistance with our water heaters, to both homeowners and professional installers.
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Technical Data
Model DHC 3-1 DHC 3-2 DHC 4-2 DHC 4-3 DHC 5-2 DHC 6-2 DHC 8-2 DHC 9-3 DHC 10-2
Item no. 074050 074052 074053 074051 074054 074424 074055 232204 074056
- 50/60 Hz 1
Phase
Voltage 120
Wattage 3.0 kW 3.3 kW 2.5 kW 3.8 kW 2.9 kW 4.5 kW 4.8 kW 3.6 kW 6.0 kW 4.5 kW 7. 2 kW 5.4 kW 9.0 kW 9.6 kW 7.2 kW
Amperage 25 A 14 A 12 A 16 A 14 A 17 A 20 A 18 A 25 A 22 A 30 A 26 A 32.5 A 40 A 35 A
Min. recommended
circuit breaker size
Min. recommended wire size 210/2 AWG 14/2 AWG 12/2 AWG 14/2 AWG 12/2 AWG 12/2 AWG 10/2 AWG 10/2 AWG 8/2 AWG 8/2 AWG
Minimum water flow to
activate unit
Weight 4.6 lb / 2.1 kg 5.3 lb / 2.4 kg 5.3 lb / 2.4 kg 4.6 lb / 2.1 kg 4.6 lb / 2.1 kg 4.6 lb / 2.1 kg 5.3 lb / 2.4 kg 5.3 lb / 2.4 kg 5.3 lb / 2.4 kg
Dimensions (H x W x D)
Nominal water volume 0.13 gal / 0.5 l
Working pressure 150
Tested t o pressure 300 psi / 20 BAR
Water connections
DHC 3-1, 3-2, 4-2 ship with a 0.5 GPM pressure compensating fl ow-reducer/aerator that must be installed.
1
This is our recommendation for overcurrent protection sized at 100% of load (DP for 240/208/277 V & SP for 120 V models).
Check local codes for compliance if necessary. Tankless water heaters are considered a non-continuous load.
2
Copper must be used. Conductors should be sized to maintain a voltage drop of less than 3% under load.
3
Suitable for supply with cold water only.
1
3
V 240 V 208 V 240 V 208 V 277 V 240 V 208 V 240 V 208 V 240 V 208 V 277 V 240 V 208 V
25 A 15 A 15 A 20 A 15 A 20 A 20 A 20 A 25 A 25 A 30 A 30 A 35 A 40 A 35 A
0.32 GPM
1.2 l/min
143/16 / 36.0 cm x 77/8 / 20.0 cm x 41/8 / 10.4 cm
psi / 10 BAR
½ NPT
Certified to ANSI/UL Std. 499
Conforms to CAN/CSA E335-1 & E335-2-35
0.32 GPM
1.2 l/min
0.42 GPM
1.6 l/min
0.42 GPM
1.6 l/min
Tested and cer tified by WQA
against NSF/ANSI 372 for lead
free compliance.
0.42 GPM
1.6 l/min
0.47 GPM
1.8 l/min
0.69 GPM
2.6 l/min
0.79 GPM
3.0 l/min
0.79 GPM
3.0 l/min
Temperature Rise vs. Flow Rate at Maximum Rated Voltage
90
80
70
0.69
60
50
40
Temp Rise °F
30
20
10
0
Limited Warranty (Excerpt): Subject to the terms and conditions set forth in this limited warranty, Stiebel Eltron, Inc. hereby warrants to the original purchaser that each Tankless Electric
Domestic Hot Water 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. Complete warranty details available online.
Due to our continuous process of engineering and technological
advancement, specifications may change without notice.
0.79
0.750.5 1.0 1.25 1.5 1.75 2.0
Flow Rate GPM
7 years leakage
& 3 years parts.
Complete warranty
DHC 10-2
DHC 9-3
DHC 8-2
DHC 6-2
DHC 5-2
DHC 4-3
DHC 4-2
DHC 3-2
DHC 3-1
17 West Street
West Hatfield, MA 01088
TOLL FREE 800.582.8423
PHONE 413.247.3380
FAX 413.247.3369
info
www.stiebel-eltron-usa.com
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online.
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