STIEBEL ELTRON DHC 3-2 Installation Instructions

– 8 –
No hot water but audible click can be heard
when water is turned on
Symptom Possible cause Solution
Troubleshooting
– circuit breaker off
– safety thermal cut-out tripped
– circuit breaker on.
– reset thermal cut-out
.
No hot water and no audible click can be
heard when water is turned on
– water flow too low to activate flow switch – clean faucet aerator.
– open shut-off valve completely.
– open flow adjustment screw
.
– clean filter screen at DHC 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.
Water not warm enough – water flow too high
– voltage too low
– reduce water flow, close flow adjustment
screw
.
– supply correct voltage to unit.
Spare parts
No. Spare part Model DHC 3-1 DHC 3-2 DHC 4-2 DHC 4-3 DHC 5-2 DHC 6-2 DHC 8-2 DHC 10-2
1 Heating system 16 58 89 16 77 69 16 77 70 16 58 90 16 77 71 17 11 17 16 77 72 16 77 73
2 Flow switch 16 52 73 16 52 73 16 21 62 16 21 62 16 21 62 17 11 05 16 21 64 16 21 65
3 Thermostat 16 24 72
4 Switch 16 80 26
5 Housing (back) 16 58 91
6 Plumbing connection 17 07 89
7 Housing (front) 16 58 92
8 Safety thermal cut out 16 24 74
9 Wiring block 16 22 02 16 50 49
10 Copper tube 16 23 14
11 Module chassis 16 24 62
12 Wire strain relief clamp 05 57 54
Technical Data
– Suitable for supply with cold water
– Tankless water heaters are considered a non-continuous load
– Conductors should be sized to maintain a voltage drop of less than 3 % under load
Voltage V 120 208 240 208 240 277 208 240 208 240 208 240 208 240
Model DHC 3-1 DHC 3-2 DHC 4-2 DHC 4-3 DHC 5-2 DHC 6-2 DHC 8-2 DHC 10-2
Phase 11 111111
Wattage kW 3.0 2.5 3.3 2.9 3.8 4.5 3.6 4.8 4.5 6.0 5.4 7.2 7.2 9.6
Ampere A 25 12 14 14 16 17 18 20 22 25 26 30 35 40
Min. required circuit breaker size A30 1520 2020 20 30 303030 40 404050
Recommended wire size
AWG COPPER 10 14 12 12 12 12 10 10 10 10 8 8 8 8
Min. water flow
to activate unit GPM / l/min 0.32 / 1.2 0.32 / 1.2 0.42 / 1.6 0.42 / 1.6 0.42 / 1.6 0.48 / 1.8 0.69 / 2.6 0.79 / 3.0
Pressure loss in unit PSI / bar 2.88 / 0.23 2.88 / 0.23 2.88 / 0.23 2.88 / 0.23 2.88 / 0.23 2.88 / 0.23 3.13 / 0.25 3.75 / 0.30
Nominal water volume 0.13 GAL / 0.5 l
Working pressure max. 150 PSI / 10 bar
Tested to pressure 300 PSI / 20 bar
Weight lbs. / kg 4.6 / 2.1 5.3 / 2.4 5.3 / 2.4 4.6 / 2.1 4.6 / 2.1 5.3 / 2.4 5.3 / 2.4 5.3 / 2.4
Water connections 1/2" NPT

STIEBEL ELTRON DHC 3-2 Specifications

General

Brand	STIEBEL ELTRON
Model	DHC 3-2
Category	Water Heater
Language	English