INSTALLATION
TECHNICAL DATA
11.4 Data tables
DHC 3-1 Classic
202646
Electrical details
Voltage
120
Wattage
3.0
Amperage
25
Minimum recommended circuit
1
breaker size
25
Minimum recommended wire
2
size (copper)
10
Power connection
1/N/GND
Connections
3
Water connection
1/2˝ NPT
Total alkaline earths
2.5
Total hardness (H
O)
14 Degree d
2
Hardness range
2 (average hardness)
Hydraulic data
Rated capacity
0.13
Values
Max. permissible inlet temp.
86
Min. water flow to activate unit
0.32
Pressure drop at flow rate
3.33
Flow rate for pressure drop
0.32
Application limits
Max. permissible pressure
150
Test pressure
300
Versions
Pressure vessel material
Copper
Heating system
Tubular heater
Cover and back panel
Plastic
Color
White
Dimensions
Height
14
Width
7
Depth
3
Weights
Weight
5.5
DHC 3-1, 3-2, 4-2 Classic ship with a 0.5 GPM pressure compensating flow-reducer/aerator that must be installed.
1
Overcurrent 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.
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.
These are our recommendations. Check local codes for compliance if necessary.
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DHC 3-2 Classic
202647
208
240
V
V
2.5
3.3
kW
kW
12
14
A
A
15
15
A
A
14
AWG
AWG
2/GND
mol/m³
(0.5
)
gal
l
(30
)
°F
°C
(1.2
)
0.32
(1.2
gpm
l/min
gpm
l/min
(0.023
)
3.33
(0.023
psi
MPa
psi
MPa
(1.2
)
0.32
(1.2
gpm
l/min
gpm
l/min
(1
)
psi
MPa
(2
)
psi
MPa
3
/
(360
)
in
mm
16
15
/
(202
)
in
mm
16
7
/
(98
)
in
mm
8
(2.5
)
4.6
(2.1
)
lb
kg
lb
kg
DHC 4-2 Classic
202648
208
240
V
V
V
2.9
3.8
kW
kW
kW
14
16
A
A
A
15
20
A
A
A
14
12
AWG
AWG
2/GND
)
0.43
(1.6
)
gpm
l/min
)
3.33
(0.023
)
psi
MPa
)
0.43
(1.6
)
gpm
l/min
4.6
(2.1
)
lb
kg
DHC 4-3 Classic
DHC 5-2 Classic
202649
202650
277
208
V
V
4.5
3.6
kW
kW
17
18
A
A
20
20
A
A
12
12
AWG
AWG
1/N/GND
2/GND
0.43
(1.6
)
0.43
(1.6
gpm
l/min
gpm
3.33
(0.023
)
3.33
(0.023
psi
MPa
psi
0.43
(1.6
)
0.43
(1.6
gpm
l/min
gpm
4.6
(2.1
)
4.6
(2.1
)
lb
kg
lb
kg
DHC CLASSIC |
240
V
4.8
kW
20
A
20
A
)
l/min
)
MPa
)
l/min
11