Instructions / Assembly

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Tempra Plus
Tempra 12
Plus
Tempra 15
Plus
Tempra 20
Plus
Tempra 24
Plus
3
Tempra 29
Plus
3
Tempra 36
Plus
4
224196 224197 224198 224199 223425 223426
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.
11. 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.