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8 | DHC WWW.STIEBEL-ELTRON-USA.COM
INSTALLATION
NORMAL MAINTENANCE
10. Normal maintenance
STIEBEL ELTRON DHC tankless heaters are designed for a very long
service life. Actual life expectancy will vary with water quality and
use. The unit itself does not require any regular maintenance.
However, to ensure consistent water flow, it is recommended
to periodically remove scale and dirt that may build up at the
aerator of the faucet or in the shower head. Also, the DHC has
a built in filter screen that should be cleaned from time to time.
In order to do this, turn off the cold water supply at the isolating
valve and remove the ground wire. Twist cold water supply tube
counterclock wise by 90° and pull towards bottom of unit. Clean
screen and put the screen, the cold water supply tube and the
ground wire back into their original position. Please be sure that
the ground wire is reinstalled and that ground screw is securely
tightened after this procedure.
Note:
Other than the filter screen, the DHC does not contain any
parts serviceable by the lay person. In case of malfunction
please contact a licensed plumber or electrician.
11. Technical Data
11.1 Dimensions
b01
c06 c01
c01
c06
38 (1.5")
360 (14.17")
200 (7.88")
100 (3.94")
110 (4.33")
273 (10.75")75 (2.953")
8 (0.315")
D0000021558
b01 electrical supply cable
c01 cold water connection 1/2" NPT
c06 hot water connection 1/2" NPT
11.2 Wiring diagram
DHC 3-2, DHC 4-2, DHC 5-2
A 2/GND ~ 208 / 240 V
DHC 4-3
B 1/N/GND ~ 277 V
LL
A
V
NL
B
85_02_02_0008
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