Tankless Sizing Guide | DHX Trend & Plus Electric Tankless Water Heaters

Stiebel Eltron Inc.

DHX 6-2 Trend Self Modulating 6.0 kW .91 GPM Point-of-Use Tankless Electric Water Heater Installation Guide

Stiebel Eltron DHX 6-2 Trend 040232499630 0040232499630 1006260735

DHX 12-2 Trend Self Modulating 12 kW 2.34 GPM Point-of-Use Tankless Electric Water Heater Installation Guide

Stiebel Eltron DHX 12-2 Trend 040232377952 0040232377952 1006260746

DHX 3.5-1 Trend Self Modulating 3.5 kW .53 GPM Point-of-Use Tankless Electric Water Heater Installation Guide

Stiebel Eltron DHX 3.5-1 Trend 040232377921 0040232377921 1006260731

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DHX 3.5-1 Trend
3.5 kW MAX. FLOW RATE
POSSIBLE FIXTURES
DHX 6-2 Trend
6.0 kW MAX. FLOW RATE
POSSIBLE FIXTURES

42°F
0.5 GPM
0.85 GPM

52°F
0.6 GPM
1.1 GPM

62°F
0.85 GPM
1.5 GPM

72°F
1.3 GPM
2.3 GPM

DHX 8-2 Trend

7.2 kW MAX. FLOW RATE

1 GPM

POSSIBLE FIXTURES

1.3 GPM

1.8 GPM

2.7 GPM

DHX 10-2 Trend 9.6 kW MAX. FLOW RATE POSSIBLE FIXTURES

1.4 GPM 1 GPM 1.7 GPM 1.2 GPM 2.3 GPM 1.5 GPM 3.6 GPM 2 GPM

OR

OR

OR

OR

DHX 12-2 Plus & Trend

12.0 kW MAX. FLOW RATE

1.3 GPM

POSSIBLE FIXTURES

Low OR
Flow

1.55 GPM
OR

1.9 GPM
OR

2.5 GPM
OR

DHX 15-2 Plus & Trend

14.4 kW MAX. FLOW RATE

1.6 GPM

POSSIBLE FIXTURES

OR

1.9 GPM
OR

2.3 GPM
OR

3 GPM
Low OR
Flow

Max. Flow Rates shown for 240V models are correct if installed with 240V service. Increase one model size if unit will be installed with 208V service.

42°F

Inlet water temperatures shown are an average for each zone, and may vary both seasonally and by exact location.

52°F
62°F 72°F

FIXTURES & FLOW RATES
for model possibilities and temp.
for max. flow rate calculation

SINGLE LAV SINK

90°F

(Range 0.5-1.5)

SHOWER (Range 1.0-2.5)

105°F

KITCHEN SINK (Range 1.0-2.2)

105°F

Higher temps reduce flow rates

17 West St., W. Hatfield, MA 01088 | 800.582.8423 | 413.247.3380 | fax 413.247.3369 | info@stiebel-eltron-usa.com | www.stiebel-eltron-usa.com

DHX Trend & Plus Electric Tankless Water Heater Sizing Guide

Temp Rise °F

Temp Rise °F

Temperature Rise vs. Flow Rate at Max Rated Voltage
90
80
70
60
50
40
30
20
10
0 0.26 0.5 1.0 1.5 2.0 2.5 3.0 3.5
(activation)
Flow Rate GPM
Temperature Rise vs. Flow Rate at 208 V
90 80 70 60 50 40 30 20 10 0
0.26 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
(activation)
Flow Rate GPM

Aerator
DHX 15-2 Trend/Plus 12-2 Trend/Plus 10-2 Trend 8-2 Trend 6-2 Trend 3.5-1 Trend
4.0 4.5
1.0 GPM Aerator
DHX 15-2 Trend/Plus 12-2 Trend/Plus 10-2 Trend 8-2 Trend 6-2 Trend
4.5

17 West St., W. Hatfield, MA 01088 | 800.582.8423 | 413.247.3380 | fax 413.247.3369 | info@stiebel-eltron-usa.com | www.stiebel-eltron-usa.com