Troubleshooting; Technical Data; Tempra B - STIEBEL ELTRON TEMPRA 12 B Operation And Installation Manual

INSTALLATION

TROUBLESHOOTING

12. Troubleshooting
Symptom
No hot water
Not enough hot water
Water not hot enough
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

Part number
Electrical details
Phase
Voltage
Wattage
Max. amp. load
Number & min. recommended size of circuit
1
breakers (DP)
Power connection
Min. recommended wire size (copper)
Connections
Water connection
Max. cold water temperature
Hydraulic data
Rated capacity
Values
ON
ON
Max. permissible inlet temperature
Application limits
Max. permissible pressure
Test pressure
Versions
Temperature display
Cap and back panel
Colour
Dimensions
Height
Width
Depth
Weights
Weight
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.
WWW.STIEBEL-ELTRON-USA.COM
Possible cause
– circuit breakers off
– safety thermal cut-out tripped
– not enough flow rate to activate unit
– filter screen clogged
– water flow rate too high
– voltage too low
Tempra 12 B Tempra 15 B
223420 223421
single 50/60 Hz single 5 50/60 Hz
240 V 208 V 240 V
12 kW 9 kW 14.4 kW 10.8 kW 19.2 kW 14.4 kW 24 kW
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
1 x 50 A 2 x 30 A
1/N/GRD 2/GRD
2 1 x 6/2 AWG 2 x 10/2 AWG
3/4" NPT
108°F / 42°C
0.13 gal / 0.5 l 0.26 gal / 1.0 l
1.4 l/min 1.9 l/min
0.37 GPM 0.5 GPM
131°F / 55°C
150 PSI / 1.0 MPa
300 PSI / 2.0 MPa
digital
sheet steel
grey
14.52 in / 369 mm
16.54 in / 420 mm
4.61 in / 117 mm
13.5 lbs / 6.1 kg 16.1 lbs / 7.3 kg
Solution
– turn circuit breakers on
– reset safety thermal cut-out
– clean filter screen at unit
– clean faucet aerator or shower head
– clean filter screen at unit
– reduce water flow rate until power light on front cover stops blinking
– supply correct voltage to unit
Tempra 20 B Tempra 24 B
223422 223424
single 5 50/60 Hz single
208 V 240 V 208 V 240 V
2 x 40 A 2 x 35 A 2 x 50 A
2/GRD 2/GRD
2 x 8/2 AWG 2 x 6/2 AWG
0.26 gal / 1.0 l 0.26 gal / 1.0 l
1.9 l/min 1.9 l/min
0.5 GPM 0.5 GPM
16.1 lbs / 7.3 kg 16.1 lbs / 7.3 kg
3 Tempra 29 B 3 Tempra 36 B
232885 232886
5 50/60 Hz single 5 50/60 Hz single
208 V 240 V 208 V 240 V
18 kW 28.8 kW 21.6 kW 36 kW
3 x 40 A 3 x 35 A 3 x 50 A
3/GRD 3/GRD
3 x 8/2 AWG 3 x 6/2 AWG
0.39 gal / 1.5 l 0.39 gal / 1.5 l
2.9 l/min 2.9 l/min
0.77 GPM 0.77 GPM
19 lbs / 8.6 kg 19 lbs / 8.6 kg
TEMPRA & TEMPRA PLUS |
4
5 50/60 Hz
208 V
27 kW
9