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WWW.STIEBEL-ELTRON-USA.COM TEMPRA & TEMPRA PLUS | 9
ENGLISH
INSTALLATION
TROUBLESHOOTING
12. Troubleshooting
Symptom Possible cause Solution
No hot water – circuit breakers off
– safety thermal cut-out tripped
– not enough flow rate to activate unit
– turn circuit breakers on
– reset safety thermal cut-out
– clean filter screen at unit
– clean faucet aerator or shower head
Not enough hot water – filter screen clogged – clean filter screen at unit
Water not hot enough – water flow rate too high
– voltage too low
– reduce water flow rate until power light on front cover stops blinking
– supply correct voltage to unit
If you are not able to resolve a problem please contact us toll free at 800-582-8423 before removing the unit from the wall.
Stiebel Eltron is happy to provide technical assistance. In most instances, we can resolve the problem over the phone.
13. Technical Data
13.1 Tempra B
Tempra 12 B Tempra 15 B Tempra 20 B Tempra 24 B
3
Tempra 29 B
3
Tempra 36 B
4
Part number 223420 223421 223422 223424 232885 232886
Electrical details
Phase single 50/60 Hz single
5
50/60 Hz single
5
50/60 Hz single
5
50/60 Hz single
5
50/60 Hz single
5
50/60 Hz
Voltage 240 V 208 V 240 V 208 V 240 V 208 V 240 V 208 V 240 V 208 V 240 V 208 V
Wattage 12 kW 9 kW 14.4 kW 10.8 kW 19.2 kW 14.4 kW 24 kW 18 kW 28.8 kW 21.6 kW 36 kW 27 kW
Max. amp. load 1 x 50 A 1 x 44 A 2 x 30 A 2 x 26 A 2 x 40 A 2 x 35 A 2 x 50 A 2 x 44 A 3 x 40 A 3 x 35 A 3 x 50 A 3 x 44 A
Number & min. recommended size of circuit
breakers
1
(DP) 1 x 50 A 2 x 30 A 2 x 40 A 2 x 35 A 2 x 50 A 3 x 40 A 3 x 35 A 3 x 50 A
Power connection 1/N/GRD 2/GRD 2/GRD 2/GRD 3/GRD 3/GRD
Min. recommended wire size (copper)
2
1 x 6/2 AWG 2 x 10/2 AWG 2 x 8/2 AWG 2 x 6/2 AWG 3 x 8/2 AWG 3 x 6/2 AWG
Connections
Water connection 3/4“ NPT
Max. cold water temperature 108°F / 42°C
Hydraulic data
Rated capacity 0.13 gal / 0.5 l 0.26 gal / 1.0 l 0.26 gal / 1.0 l 0.26 gal / 1.0 l 0.39 gal / 1.5 l 0.39 gal / 1.5 l
Values
ON 1.4 l/min 1.9 l/min 1.9 l/min 1.9 l/min 2.9 l/min 2.9 l/min
ON 0.37 GPM 0.5 GPM 0.5 GPM 0.5 GPM 0.77 GPM 0.77 GPM
Max. permissible inlet temperature 131°F / 55°C
Application limits
Max. permissible pressure 150 PSI / 1.0 MPa
Test pressure 300 PSI / 2.0 MPa
Versions
Temperature display digital
Cap and back panel sheet steel
Colour grey
Dimensions
Height 14.52 in / 369 mm
Width 16.54 in / 420 mm
Depth 4.61 in / 117 mm
Weights
Weight 13.5 lbs / 6.1 kg 16.1 lbs / 7.3 kg 16.1 lbs / 7.3 kg 16.1 lbs / 7.3 kg 19 lbs / 8.6 kg 19 lbs / 8.6 kg
1
This is our recommendation for overcurrent protection sized at 100% of load. Check local codes for compliance if necessary.
2
Copper must be used. Conductors should be sized to maintain a voltage drop of less than 3% under load.
3
Requires a 200 A main service.
4
Requires a 300 A main service.
5
29 B/29 Plus & 36 B/36 Plus may be wired for balanced 3-phase 208 V. 15 B/15 Plus, 20 B/20 Plus, 24 B/24Plus may be wired for unbalanced 3-phase 208 V.
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