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
Min. recommended
circuit breaker size 1 15 A
Min. recommended
wire size 2 (copper) 14
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
3 for
Heating system Nichrome bare-wire
Mini ™ 2-1 models are internally restricted to 0.32 gpm (1.2 l/min).
Mini 2-1, 2.5-1, 3-1 ship with a 0.5 gpm (1.9 l/min) pressure compensating flow reducer/aerator that must be installed.
™
Mini ™ 3.5-1, 4-2 ship with a 0.66 gpm (2.5 l/min) pressure compensating flow reducer/aerator that must be installed.
This is our recommendation for overcurrent protection sized at 100% of load. Check local codes for compliance if necessary.
1
Tankless water heater are considered a non-continuous load.
2 Copper must be used. Conductors should be sized to maintain a voltage drop of less than 3% under load
For use with cold water supply only
3

12. Troubleshooting

E
Safety pressure
cut out
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
20 A 25 A
12 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
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
30 A
10
Awg Awg
0.40
gpm gpm
(1.5)
l/min l/min
Possible cause
No electrical power.
The activation flow 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
15 A 15 A 25 A
14 14 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 filter screen.
– turn circuit breakers off
– open Hot Valve to release pres-
sure from the unit
– reset safety pressure cut out
– turn circuit breakers on
6-2
208 V
4.3 kW
20.6 A
25 A
10
Awg
E
9