Specification

Tempra
®
Sizing Guide and Technical Data
17 West St., W. Hatfield, MA 01088 | 800.582.8423 | 413.247.3380 | fax [phone] | info
@
stiebel-eltron-usa.com | www.stiebel-eltron-usa.com
SIMULTANEOUS
FIXTURES
42°F 52°F 62°F 72°F
Tempra
®
12
&
12 Plus
DRAWS 50 A - Requires minimum 100 A electric service
Tempra
®
& Tempra
®
Plus Tankless Electric Water Heater Sizing Guide
MAX. FLOW RATE FROM UNIT
1.3 GPM 1.6 GPM 1.9 GPM 2.5 GPM
Tempra
®
24
&
24 Plus
DRAWS 100 A - Requires minimum 150 A electric service
Tempra
®
15
&
15 Plus
DRAWS 60 A - Requires minimum 100 A electric service
1.6
GPM 1.9 GPM 2.4 GPM 3.1 GPM
Tempra
®
20
&
20 Plus
DRAWS 80 A - Requires minimum 125 A electric service
2.1
GPM 2.5 GPM 3.1 GPM 4 GPM
Tempra
®
29
&
29 Plus
DRAWS 120 A - Requires minimum 200 A electric service
3.1
GPM 3.7 GPM 4.6 GPM 6 GPM
Tempra
®
36
&
36 Plus
DRAWS 150 A - Requires minimum 300 A electric service
3.9
GPM 4.6 GPM 5.7 GPM 7.5 GPM
1 Use the map to find the approximate ground
water temperature where you live.
2 Check the column on the table with your
ground water temperature to see how many
fixtures can be supplied at the same time with
hot water.
3 Use your actual maximum flow rate to fine-
tune these recommendations. If you know you
have 1.5 GPM low flow showerheads, for
instance, then 3 GPM would supply 2 showers
at the same time, or 1 shower plus 1 sink, etc.
MAX. FLOW RATE CALCULATED FOR 105°F WATER
SHOWER
1.5 GPM
(RANGE 1.5-2.5)
KITCHEN SINK
1.5 GPM
(RANGE 1.0-2.2)
BATHROOM SINK
0.5 GPM
(RANGE 0.5-1.0)
FIXTURE FLOW RATES
(AND TYPICAL RANGES)
SIMULTANEOUS
FIXTURES
MAX. FLOW RATE FROM UNIT
SIMULTANEOUS
FIXTURES
MAX. FLOW RATE FROM UNIT
SIMULTANEOUS
FIXTURES
MAX. FLOW RATE FROM UNIT
SIMULTANEOUS
FIXTURES
MAX. FLOW RATE FROM UNIT
SIMULTANEOUS
FIXTURES
MAX. FLOW RATE FROM UNIT
42°F
52°F
72°F
62°F
2.6 GPM 3.1 GPM 3.8 GPM 5 GPM
Minimum 125 A electrical service
2 separate dedicated 40
A breakers
2 separate runs of 8
AWG copper wire
Mínimo 125 A servicio eléctrico
2 disruptores separados de 40
A
2 cables de cobre separados de 8 AWG
If you have questions about
the operation or installation
of this product, please call.
Si usted tiene preguntas sobre la
operación o instalación de este
producto, por favor llámenos para
obtener ayuda.
Model Voltage Power Breaker required Copper wire required
Tempra
®
20 & 20 Plus 240 V 19.2 kW 2 x 40 A DP 2 x 8 AWG
208 V 14.4 kW 2 x 35 A DP 2 x 8 AWG
UNIT
REQUIRES
APARATO
REQUERIDO
Stiebel Eltron
800.582.8423
Technical data and temp. rise charts on next page.
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