Simply the Best Tempra® Sizing Guide and Technical Data Simply the Best 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 Tempra ® Tankless Electric Water Heater Sizing Guide TEMPRA ® MODEL 12 / 12 Plus 15 / 15 Plus 1 Bath 1 Bath 2 Baths 2 Baths 3 Baths 3 Baths 4 Baths 4 Baths 29 / 29 Plus 20 / 20 Plus Install 2 24 / 24 Plus Install 2 Install 2 BATHROOMS IN HOUSE / CONDO 36 / 36 Plus HI AK MB ON QC PE NS NH VT MA CT RI NJ DE MD NB ME NY PA WV VA NC KY TN SC GA MS AL MO AR LA TX FL OH IN IL ID OR WA BC NE MT WY UT AZ CA NM CO IA MN ND SD NE KS OK MI WI AB SK Cool (Northern) Climate Warm (Southern) Climate Inlet water 45°F - 55°F Inlet water 55°F - 70°F These recommendations are for units installed with 240 V service. Increase one model size if unit will be installed with 208 V service. Call Stiebel Eltron at 800.582.8423 if you have any sizing questions, or if you have high flow showers, or another out-of-the-ordinary situation. Stiebel Eltron service representatives can make recommendations on sizing, or provide assistance with our water heaters, to both homeowners and professional installers.
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Simply the Best
Tempra® Sizing Guide and Technical Data
Simply the Best 17 West St., W. Hatfield, MA 01088 | 800.582.8423 | 413.247.3380 | fax 413.247.3369 | [email protected] | www.stiebel-eltron-usa.com
Tempra® Tankless Electric Water Heater Sizing Guide
T E M P R A ® M O D E L12 / 12 Plus 15 / 15 Plus
1 Bath1 Bath 2 Baths 2 Baths 3 Baths 3 Baths 4 Baths
4 Baths
29 / 29 Plus20 / 20 Plus
Install 2
24 / 24 Plus
Install 2Install 2
BA
THR
OO
MS
IN H
OU
SE /
CO
ND
O
36 / 36 Plus
HI
AK
MBON QC
PE
NS
NHVT
MA
CTRI
NJDE
MD
NB
ME
NY
PA
WV VA
NCKY
TNSC
GAMS AL
MO
AR
LATX
FL
OHINIL
IDOR
WA
BC
NE
MT
WY
UT
AZ
CA
NM
CO
IA
MN
ND
SD
NE
KS
OK
MIWI
ABSK
Cool (Northern) Climate
Warm (Southern) Climate
Inlet water45°F - 55°F
Inlet water55°F - 70°F
These recommendations are for units installed with 240 V service.Increase one model size if unit will be installed with 208 V service.
Call Stiebel Eltron at 800.582.8423 if you have any sizing questions, or if you have high flow showers, or another out-of-the-ordinary situation. Stiebel Eltron service representatives can make recommendations on sizing, or provide assistance with our water heaters, to both homeowners and professional installers.
Tempra® Tankless Electric Water Heater Sizing Guide
T E M P R A ® M O D E L12 / 12 Plus 15 / 15 Plus
1 Bath1 Bath 2 Baths 2 Baths 3 Baths 3 Baths 4 Baths
4 Baths
29 / 29 Plus20 / 20 Plus
Install 2
24 / 24 Plus
Install 2Install 2
BA
THR
OO
MS
IN H
OU
SE /
CO
ND
O
36 / 36 Plus
HI
AK
MBON QC
PE
NS
NHVT
MA
CTRI
NJDE
MD
NB
ME
NY
PA
WV VA
NCKY
TNSC
GAMS AL
MO
AR
LATX
FL
OHINIL
IDOR
WA
BC
NE
MT
WY
UT
AZ
CA
NM
CO
IA
MN
ND
SD
NE
KS
OK
MIWI
ABSK
Cool (Northern) Climate
Warm (Southern) Climate
Inlet water45°F - 55°F
Inlet water55°F - 70°F
These recommendations are for units installed with 240 V service.Increase one model size if unit will be installed with 208 V service.
Call Stiebel Eltron at 800.582.8423 if you have any sizing questions, or if you have high flow showers, or another out-of-the-ordinary situation. Stiebel Eltron service representatives can make recommendations on sizing, or provide assistance with our water heaters, to both homeowners and professional installers.
Simply the Best
Tempra® Sizing Guide and Technical Data
Simply the Best 17 West St., W. Hatfield, MA 01088 | 800.582.8423 | 413.247.3380 | fax 413.247.3369 | [email protected] | www.stiebel-eltron-usa.com
TEMPRA® SERIES TANKLESS ELECTRIC WATER HEATERS
17 West StreetWest Hatfield, MA 01088
TOLL FREE 800.582.8423PHONE 413.247.3380FAX 413.247.3369info@stiebel-eltron-usa.comwww.stiebel-eltron-usa.com
PhaseItem Number
single single single single single 5 single 5
Voltage V 208 240 208 240 208 240 208 240 208 240 208 240Wattage kW 9 12 10.8 14.4 14.4 19.2 18 24 21.6 28.8 27 36Amperage Draw (see below for recommended breaker size) A 44 50 2 x 26 2 x 30 2 x 35 2 x 40 2 x 44 2 x 50 3 x 35 3 x 40 3 x 44 3 x 50Recommended circuit breaker size 1 A 60 60 2 x 40 2 x 40 2 x 50 2 x 50 2 x 60 2 x 60 3 x 50 3 x 50 3 x 60 3 x 60Recommended wire size 2 AWG 6 6 2 x 8 2 x 8 2 x 8 2 x 8 2 x 6 2 x 6 3 x 8 3 x 8 3 x 6 3 x 6Maximum temperature increase above @ 1.50 GPM 41 54 49 65 66 88 82 92 92 92 92 92 ambient water temp. @ 2.25 GPM 27 36 37 43 44 58 54 73 66 87 82 92 @ 3.00 GPM 20 27 25 33 33 44 41 54 49 66 61 82 @ 4.50 GPM - - - - 22 29 27 37 33 44 41 55Min. water flow to activate unit GPM / I/min 0.37 / 1.4 0.58 / 2.2 0.58 / 2.2 0.58 / 2.2 0.87 / 3.3 0.87 / 3.3Weight lb / kg 13.2 / 6.1 15.4 / 7.3 15.4 / 7.3 15.4 / 7.3 17.6 / 8.6 17.6 / 8.6Nominal water volume Gal 0.13 / 0.5 0.26 / 1.0 0.26 / 1.0 0.26 / 1.0 0.39 / 1.5 0.39 / 1.5Max. inlet water temperature 131°F / 55°CDimensions 165/8˝/ 42.0 cm width x 14½˝ / 36.9 cm height x 45/8˝/ 11.7 cm depth
Working pressure 150 PSI / 10 BAR
Tested to pressure 300 PSI / 20 BARWater connections ¾˝ NPT
1 This is our recommendation as the manufacturer. Check local codes for compliance if necessary. Tankless water heaters are considered a non-continuous load. 2 Copper must be used. Conductors should be sized to maintain a voltage drop of less than 3% under load. 3 Requires a 200A main service. 4 Requires a 300A main service. 5 29/Plus & 36/Plus may be wired for 3-phase 208V.
Tempra® Model 12 / 12 Plus 15 / 15 Plus 20 / 20 Plus 24 / 24 Plus 3 29 / 29 Plus 3 36 / 36 Plus 4
Technical Data ISO 9001C E R T I F I E D
223420 / 224196 223421 / 224197 223422 / 224198 223424 / 224199 232885 / 223425 232886 / 223426
The Tempra® series is tested and certified by WQA against NSF/ANSI 372 for lead free compliance.
TempRise°F
Flow Rate GPM
Temperature Rise versus Flow Rate @ 240 VMaximum temperature rise above ambient water temperature
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