dhc sizing guide and technical datamodel 1 dhc 3-1 dhc 3-2 dhc 4-2 dhc 4-3 dhc 5-2 dhc 6-2 dhc 8-2...
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Simply the Best
DHC Sizing Guide and Technical Data
Simply the Best 17 West St., W. Hatfield, MA 01088 | 800.582.8423 | 413.247.3380 | fax 413.247.3369 | [email protected] | www.stiebel-eltron-usa.com
1.0 -2.0
DHC Tankless Electric Water Heater Sizing GuideD H C M O D E L
Std.Std.HighHighNon-
DHC 3-1 DHC 3-2 DHC 4-2
LAV
ATO
RY
SIN
K 0.50.51.01.02.0
Flow GPM DHC 4-3
code 2.0
LowLowStd.
1.01.02.0
Std. 2.0
1.0 -2.0
KIT
CHEN
SIN
K
Utility /Janitor’sSink
DHC 6-2 DHC 8-2 DHC 9-3 DHC 10-2DHC 5-2
HI
AK
MBON QC
PE
NS
NHVT
MA
CTRI
NJDE
MD
NB
ME
NY
PA
WV VA
NCKY
TNSC
GAMS AL
MO
AR
LATX
FL
OHINIL
IDOR
WA
NE
MT
WY
UT
AZ
CA
NM
CO
IA
MN
ND
SD
NE
KS
OK
MIWI
ABSK
Cool (Northern) Climate
Warm (Southern) Climate
BC
Inlet water45°F - 55°F
Inlet water55°F - 70°F
These recommendations are for units 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 high flow showers, or another 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.
1.0 -2.0
DHC Tankless Electric Water Heater Sizing GuideD H C M O D E L
Std.Std.HighHighNon-
DHC 3-1 DHC 3-2 DHC 4-2
LAV
ATO
RY
SIN
K 0.50.51.01.02.0
Flow GPM DHC 4-3
code 2.0
LowLowStd.
1.01.02.0
Std. 2.0
1.0 -2.0
KIT
CHEN
SIN
K
Utility /Janitor’sSink
DHC 6-2 DHC 8-2 DHC 9-3 DHC 10-2DHC 5-2
HI
AK
MBON QC
PE
NS
NHVT
MA
CTRI
NJDE
MD
NB
ME
NY
PA
WV VA
NCKY
TNSC
GAMS AL
MO
AR
LATX
FL
OHINIL
IDOR
WA
NE
MT
WY
UT
AZ
CA
NM
CO
IA
MN
ND
SD
NE
KS
OK
MIWI
ABSK
Cool (Northern) Climate
Warm (Southern) Climate
BC
Inlet water45°F - 55°F
Inlet water55°F - 70°F
These recommendations are for units 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 high flow showers, or another 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.
Simply the Best
DHC Sizing Guide and Technical Data
Simply the Best 17 West St., W. Hatfield, MA 01088 | 800.582.8423 | 413.247.3380 | fax 413.247.3369 | [email protected] | www.stiebel-eltron-usa.com
Model 1 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 231546 074424 232204 074056
Phase - 60/50 Hz 1
Voltage 120 V 208 V 240 V 208 V 240 V 277 V 208 V 240 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 4.5 kW 6.0 kW 5.4 kW 7.2 kW 9.6 kW 7.2 kW 9.6 kW
Amperage 25 A 12 A 14 A 14 A 16 A 17 A 18 A 20 A 22 A 25 A 26 A 30 A 32.5 A 35 A 40 A
Min. required circuit breaker size 2
30 A 15 A 20 A 20 A 20 A 20 A 30 A 30 A 30 A 30 A 40 A 40 A 40 A 40 A 50 A
Recommended wire size 3 10 AWG 14 AWG 12 AWG 12 AWG 12 AWG 12 AWG 10 AWG 10 AWG 10 AWG 10 AWG 8 AWG 8 AWG 8 AWG 8 AWG 8 AWG
Minimum water flow to activate unit
0.32 GPM1.2 l/min
0.32 GPM1.2 l/min
0.42 GPM1.6 l/min
0.42 GPM 1.6 l/min
0.42 GPM 1.6 l/min
0.47 GPM 1.8 l/min
0.69 GPM2.6 l/min
0.79 GPM 3.0 l/min
0.79 GPM 3.0 l/min
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) 143/16� / 360 mm x 77/8� / 200 mm x 41/8� / 104 mm
Nominal water volume 0.13 gal / 0.5 l
Working pressure 150 psi / 10 BAR
Tested to pressure 300 psi / 20 BAR
Water connections ½� NPT
Technical Data
Gallons/minute .5 41 F° 82 F° — 90 F° 92 F° 108 F°1 20 F° 41 F° 49 F° 49 F° 65 F° 82 F°
1.5 14 F° 28 F° 33 F° 33 F° 44 F° 55 F°Liter/minute 2 22 C° 43 C° — 52 C° 69 C° 86 C°
3 14 C° 29 C° 34 C° 34 C° 46 C° 57 C°5 9 C° 17 C° 21 C° 21 C° 28 C° 34 C°
DHC Tankless Electric Water Heaters
1 Suitable for supply with cold water only.2 This is our recommendation as the manufacturer. Check local codes for compliance if necessary. Tankless water heaters are considered a non-continuous load.3 Copper must be used. Conductors should be sized to maintain a voltage drop of less than 3% under load.
The DHC series is tested and certifi ed by WQA against NSF/ANSI 372 for lead free compliance.
Temperature Rise versus Flow RateMaximum temperature rise above ambient water temperature
TempRise°F
Flow Rate GPM