Instructions / Assembly

10 | TEMPRA WWW.STIEBEL-ELTRON-USA.COM
10. Technical Data
Tempra B
Tempra 12 B Tempra 15 B Tempra 20 B Tempra 24 B
3
Tempra 29 B
3
Tempra 36 B
4
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 V 240 208 240 208 240 208 240 208 240 208 240 208
Wattage kW 12 9 14.4 10.8 19.2 14.4 24 18 28.8 21.6 36 27
Max. amp. load A 1 x 50 1 x 44 2 x 30 2 x 26 2 x 40 2 x 35 2 x 50 2 x 44 3 x 40 3 x 35 3 x 50 3 x 44
Number & min. recommended size of circuit
breakers
1
(DP) A 1 x 50 2 x 30 2 x 40 2 x 35 2 x 50 3 x 40 3 x 35 3 x 50
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 3/4“ NPT 3/4“ NPT 3/4“ NPT 3/4“ NPT 3/4“ NPT
Max. cold water temperature °C 42 42 42 42 42 42
Max. cold water temperature °F 108 108 108 108 108 108
Hydraulic data
Rated capacity l 0.5 1.0 1.0 1.0 1.5 1.5
Rated capacity gal 0.13 0.26 0.26 0.26 0.39 0.39
Values
ON l/min 1.4 1.9 1.9 1.9 2.9 2.9
ON GPM 0.37 0.5 0.5 0.5 0.77 0.77
Max. permissible inlet temperature °C 55 55 55 55 55 55
Max. permissible inlet temperature °F 131 131 131 131 131 131
Application limits
Max. permissible pressure MPa 1.0 1.0 1.0 1.0 1.0 1.0
Max. permissible pressure PSI 150 150 150 150 150 150
Test pressure MPa 2.0 2.0 2.0 2.0 2.0 2.0
Test pressure PSI 300 300 300 300 300 300
Versions
Temperature display digital digital digital digital digital digital
Cap and back panel Sheet steel Sheet steel Sheet steel Sheet steel Sheet steel Sheet steel
Colour grey grey grey grey grey grey
Dimensions
Height mm 369 369 369 369 369 369
Height in 14.52 14.52 14.52 14.52 14.52 14.52
Width mm 420 420 420 420 420 420
Width in 16.54 16.54 16.54 16.54 16.54 16.54
Depth mm 117 117 117 117 117 117
Depth in 4.61 4.61 4.61 4.61 4.61 4.61
Weights
Weight kg 6.1 7.3 7.3 7.3 8.6 8.6
Weight lb 13.5 16.1 16.1 16.1 19 19
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 30phase 208 V. 15 B/15 Plus, 20 B/20 Plus, 24 B/24Plus may be wired for unbalanced 3-phase 208 V.