Technical Data; Troubleshooting - STIEBEL ELTRON MINI 2-1 Operation And Installation

INSTALLATION

TECHNICAL DATA

11. Technical data
Mini
Item number 231045
Phase 1
Voltage 110–120 V
Wattage 1.8 kW
Max. amp, load 15 A
Required circuit
breaker size 20 A
Required wire size 12
AWG
Minimum water flow 0.21
to activate unit (0.8)
Recommended inlet
temp. range 41–77 °F (5–25 °C)
Nominal water volume 0.026 gal (0.1 l)
Max. working pressure 150 psi (10 bar)
Tested to pressure 300 psi (20 bar)
Weight 3.44 lbs. (1.56 kg)
Height 6
½˝
Depth 3¼
Width
7
½˝
Water connections for
Heating system Nichrome bare-wire
™
Mini 2-1 models are internally restricted to 0.32 gpm. Mini
Mini ™ 3.5-1, 4-2 ship with a 0.66 gpm pressure compensating fl ow reducer/aerator that should be installed.
-Tankless water heaters are considered a non-continuous load
-Conductors should be sized to maintain a voltage drop of less than 3 % under load
-For use with cold water supply only

12. Troubleshooting

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WWW.STIEBEL-ELTRON-USA.COM
™ ™
2-1 Mini 2.5-1
232098 220816
1 1
110–120 V 110–120 V
2.4 kW 3.0 kW
20 A 25 A
30 A 30 A
10 10
AWG
0.40 0.40
GPM GPM
(1.5) (1.5)
l/min l/min
(165 mm)
(82 mm)
˝
(190 mm)
3
/ ˝ O.D. flex connector
8
™
2-1, 2.5-1, 3-1 ship with a 0.5 gpm pressure compensating fl ow reducer/aerator that should be installed.
Symptom
No hot water
despite fully
opened hot
water faucet.
™ ™
Mini 3-1 Mini 3.5-1
232099
1
110–120 V
3.5 kW
29 A
40 A
10
AWG AWG
0.40
GPM GPM
(1.5)
l/min l/min
Possible cause
No electrical power.
The activation fl ow rate needed to
turn on the heating element has
not been reached.
Safety cut out tripped
™
MINI SERIES TANKLESS ELECTRIC WATER HEATERS |
™ ™
Mini 4-2 Mini
222039 220817
1 1
220–240 V 208 V 220–240 V
3.5 kW 5.7 kW
2.6 kW
14.6 A 12.7 A 23.8 A
20 A 20 A 30 A
12 12 10
AWG AWG AWG
0.40 0.77
GPM GPM
(1.5) (2.9)
l/min l/min
Solution
Check the circuit breaker and
check voltage at the wiring block.
Clean fi lter screen.
– turn circuit breakers off
– open Hot Valve to release pres-
sure from the unit
– reset saftey pressure cut out
– turn circuit breakers on
6-2
208 V
4.3 kW
20.6 A
30 A
10
AWG
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