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INSTALLATION
17.4 Application areas/conversion table
Here data is shown for electrical resistivity and electrical conduc-
tivity.
Standard specifica-
Min.
Max.
Min.
resistivity
conductivity
≤
resistivity
ρ ≥
ρ ≥
Ωcm
mS/m μS/cm
Ωcm
1100
91
910
970
17.6 Data table
Item no.
Electrical data
Phase (50/60
)
Hz
Rated voltage
Rated output
Amperage draw
Min. recommended circuit breaker size
2
Min recommended wire size
(copper)
Min. resistivity ρ15 ≥
Max. conductivity 15 ≤
Connections
Water connections
Application limits
Maximum permissible pressure
Maximum inlet temperature for reheating
Maximum inlet temperature
User selectable temperature range
Internal anti-scalding protection
temperature limiter values
Hydraulic data
Minimum water flow to activate unit
Nominal water volume
Other
Type of installation
Protection class
Insulating block
Heating system
Cover and back panel
Color
Dimensions
Height
Width
Depth
Weights
Weight
1
Overcurrent protection sized at 100% of load. Tankless water heaters are
considered a non-continuous load. Use only GFCI Class A circuit breakers.
2
Copper conductors with a temperature rating of 75 °C or greater must be
used.
Conductors should be sized to maintain a voltage drop of less than 3%
under load.
These are our recommendations. Check local codes for compliance if necessary.
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Max.
Min.
Max.
conductivity
≤
resistivity
conductivity
ρ ≥
mS/m μS/cm
Ωcm
mS/m μS/cm
103
1031
895
112
DHX 15 Select
204812
1/N/GND | 2/GND
240
208
V
14.4
10.8
kW
60
52
A
A
1
60
60
A
A
6/2
6/2
AWG
1100 Ω cm
910 μS/cm
½˝
NPT
145
(1
)
psi
MPa
131
(55
)
°F
°C
149
(65
)
°F
°C
68–140
(20–60
)
°F
°C
100, 109, 122, 140
(38, 43, 50, 60
°F
0.264
(1.0
)
gal
l/min
0.07
(0.277
)
gal
l
Over-sink/under-sink
1
Glass-reinforced polyamide
™
Direct Coil
Plastic
White
14
1
/
˝ (360
)
mm
8
8˝ (202
)
mm
4
5
/
˝ (109
)
mm
16
5.5
(2.5
)
lbs
kg
17.4.1 Sizing the pipework
When calculating the size of the pipework, an water heater pressure
drop of 14.5 psi (0.1 MPa) is recommended.
17.5 Fault conditions
In the event of a fault, temperatures up to 176 °F (80 °C) at a pressure
≤
of 145 psi (1.0 MPa) can occur briefly in the installation.
1117
V
kW
AWG
), factory default: 140 °F (60 °C)
°C
DHX 15 Select |
19
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