STIEBEL ELTRON DHX 15 Select - Fault Conditions; Data Table

INSTALLATION
ZĤ¼êÐ|ŒêĒĉ
ENGLISH
www.stiebel-eltron-usa.com DHX 15 Select | 19
17.4 Application areas/conversion table
Here data is shown for electrical resistivity and electrical conduc-
tivity.
Standard specifica-
ŒêĒĉ|ŒĜÑŨ³ ŝƃŨ³ ŝÑŨ³
Min.
resistivity
ρ≥
Max.
conductivity ı≤
Min.
resistivity
ρ≥
Max.
conductivity ı≤
Min.
resistivity
ρ≥
Max.
conductivity ı≤
Ωcm mS/m μS/cm Ωcm mS/m μS/cm Ωcm mS/m μS/cm
1100 91 910 970 103 1031 895 112 1117
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.
17.6 Data table
DHX 15 Select
Item no. 204812
Electrical data
Phase (50/60 Hz) 1/N/GND | 2/GND
Rated voltage 240 V 208 V
Rated output 14.4 kW 10.8 kW
Amperage draw 60 A 52 A
Min. recommended circuit breaker size
1
60 A 60 A
Min recommended wire size
2
(copper) 6/2 AWG 6/2 AWG
Min. resistivity ρ15 ≥ 1100 Ω cm
Max. conductivity ı15 ≤ 910 μS/cm
Connections
Water connections ½˝ NPT
Application limits
Maximum permissible pressure 145 psi (1 MPa)
Maximum inlet temperature for reheating 131 °F (55 °C)
Maximum inlet temperature 149 °F (65 °C)
User selectable temperature range 68–140 °F (20–60 °C)
Internal anti-scalding protection
temperature limiter values
100, 109, 122, 140 °F (38, 43, 50, 60 °C), factory default: 140 °F (60 °C)
Hydraulic data
Minimum water flow to activate unit 0.264 gal (1.0 l/min)
Nominal water volume 0.07 gal (0.277 l)
Other
Type of installation Over-sink/under-sink
Protection class 1
Insulating block Glass-reinforced polyamide
Heating system Direct Coil
™
Cover and back panel Plastic
Color White
Dimensions
Height 14
1
/
8
˝ (360 mm)
Width 8˝ (202 mm)
Depth 4
5
/
16
˝ (109 mm)
Weights
Weight 5.5 lbs (2.5 kg)
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.