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10 | DHC WWW.STIEBEL-ELTRON-USA.COM
INSTALLATION
TECHNICAL DATA
11.4 Data table
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
074050 074052 074053 074051 074054 074424 074055 232204 074056
Electrical details
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 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. recommended circuit
breaker size
1
25 A 15 A 15 A 15 A 20 A 20 A 20 A 20 A 25 A 25 A 30 A 30 A 35 A 35 A 40 A
Min. recommended wire size
(copper)
2
10 AWG 14 AWG 14 AWG 12 AWG 12 AWG 12 AWG 10 AWG 10 AWG 8 AWG 8 AWG
Power connection 1/N/GND 2/GND 2/GND 1/N/GND 2/GND 2/GND 2/GND 2/GND 2/GND
Connections
Water connection
3
1/2˝ NPT
Total alkaline earths 2.5 mol/m³
Total hardness (H
2
O) 14 Degree d
Hardness range 2 (average hardness)
Hydraulic data
Rated capacity 0.5 l
Rated capacity 0.13 gal
Values
Max. permissible inlet temp. 86 °F / 30°C
Min. water flow to activate unit 1.2 l/min 1.2 l/min 1.6 l/min 1.6 l/min 1.6 l/min 1.8 l/min 2.6 l/min 3.0 l/min 3.0 l/min
Min. water flow to activate unit 0.32 GPM 0.32 GPM 0.43 GPM 0.43 GPM 0.43 GPM 0.48 GPM 0.69 GPM 0.8 GPM 0.8 GPM
Pressure drop at flow rate 0.023 MPa 0.023 MPa 0.023 MPa 0.023 MPa 0.023 MPa 0.023 MPa 0.025 MPa 0.03 MPa 0.03 MPa
Pressure drop at flow rate 2.88 PSI 2.88 PSI 2.88 PSI 2.88 PSI 2.88 PSI 2.88 PSI 3.13 PSI 3.75 PSI 3.75 PSI
Flow rate for pressure drop 1.2 l/min 1.2 l/min 1.6 l/min 1.6 l/min 1.6 l/min 1.8 l/min 2.6 l/min 3.0 l/min 3.0 l/min
Flow rate for pressure drop 0.32 GPM 0.32 GPM 0.43 GPM 0.43 GPM 0.43 GPM 0.48 GPM 0.69 GPM 0.8 GPM 0.8 GPM
DHW delivery 1.2 l/min 1.2 l/min 1.6 l/min 1.6 l/min 1.6 l/min 1.8 l/min 2.6 l/min 3.0 l/min 3.0 l/min
DHW delivery 0.32 GPM 0.32 GPM 0.43 GPM 0.43 GPM 0.43 GPM 0.48 GPM 0.69 GPM 0.8 GPM 0.8 GPM
Application limits
Max. permissible pressure 1 MPa
Max. permissible pressure 150 PSI
Test pressure 2 MPa
Test pressure 300 PSI
Versions
IP-Rating IP25
Material of the pressure vessel Copper
Heating system Tubular heater
Cover and back panel Plastic
Color white
Dimensions
Height 14.17 in / 360 mm
Width 7.88 in / 200 mm
Depth 4.33 in / 100 mm
Weights
Weight 2.1 kg
Weight 4.6 lb
DHC 3-1, 3-2, 4-2 ship with a 0.5 gpm (1.9 l/min) pressure compensating flow-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.
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