Technical Data; Fault Finding - Qualified Installer - STIEBEL ELTRON DHF 13 C compact control Operating And Installation

instAllAtion
instAllAtion

7.12 technical data

(the data on the unit rating plate are applicable)
Hydraulically controlled instantaneous water heaters
Type
Part no.
Rated voltage
Partial power
Rated power
Min. flow rate to activate
Flow rate limiter
Pressure loss*
Flow rate
Nominal water volume
Type of construction
Rated overpressure
Weight
Protection class to EN 60335
Protection mode to EN 60529
Test mark, see unit rating plate
Water connection
Electrical connection
Max. mains impedance Z max to
EN 61000-3-11
Heating element
Cold water inlet
use in waters
Total alkaline earths
Overall hardness (earlier unit)
Hardness range (earlier unit)
Table 3
* Pressure drop values also apply to the minimum flow pressure in accordance with DIN 44851 / Flow rate for heating from 10 °C to 55 °C
(∆-ϑ 45 K). A pressure drop of 0.1 MPa (1 bar) is recommended for pipe network dimensioning, in line with DIN 1988 Part 3, Table 4.
7.13 Fault finding
- qualified installer
Cause
Unit does not switch on.
Differential pressure switch (10, control valve MRC)
with flow rate controller does not switch on in spite
of the hot water tap being turned fully on.
Unit does not produce hot water in spite of an audible
switch-on noise by the differential pressure switch.
Heating system does not heat water.
Table 4
22 |DHF C
DHF 13 C DHF 13 C-A
compact compact
control
074301
V 400
•
Stage kW 6.6
Stage •• kW 13.2
•
Stage l/min 2.5
Stage •• l/min 3.7
l/min 4.5
MPa 0.05
l/min 3.7
l 0.6
closed x
MPa 1
kg 4.0
1
IP 24
x
external thread G ½
3/PE ~ 400 V x
1/N/PE ~ 220 V
1/N/PE ~ 230 V
3/PE ~ 230 V
Ω -
Copper tubular
heating elementr x
°C ≤ 20
mol/m³ ≤ 2.5
°d ≤ 14
Inclusive of 2 (me-
dium hard) x
Cause
Water pressure in cold water pipe too low.
Strainer in 3-way valve (6) fouled.
Necessary switch-on quantity to switch on the hea-
ting output is not reached.
Safety temperature limiter (12) has tripped, possibly
due to:
Intlet temperature too high.
Control valve (MRC)
Element scaled up.
No voltage.
Heating system faulty.
DHF 15 C DHF 18 C DHF 21 C
compact compact compact
control control control
222214 074302 074303
400 400 400
6.6 7.5 9
13.2 15 18
3.0 3.0 3.9
4.5 4.5 5.9
6.5 6.5 7.0
0.055 0.055 0.06
4.5 4.5 5.9
0.6 0.6 0.6
x x x
1 1 1
4.0 4.0 4.0
1 1 1
IP 24 IP 24 IP 24
x x x
G ½ G ½ G ½
x x x
- - -
x x x
≤ 30 ≤ 20 ≤ 20
≤ 2.5 ≤ 2.5 ≤ 2.5
≤ 14 ≤ 14 ≤ 14
x x x
faulty.
DHF 24 C DHF 12 C1
compact compact
control control
074304 074305
400 400 220
10.5 12 8
21 24 12
4.4 4.9 2.5
6.4 7.6 3.7
7.5 8.0 4.5
0.06 0.07 0.05
6.4 7.6 3.7
0.6 0.6 0.6
x x x
1 1 1
4.0 4.0 4.0
1 1 1
IP 24 IP 24 IP 24
x x x
G ½ G ½ G ½
x x
x
- 0.44 0.15
x x x
≤ 20 ≤ 20 ≤ 20
≤ 2.5 ≤ 2.5 ≤ 2.5
≤ 14 ≤ 14 ≤ 14
x x x
» remedy
Descale or replace showerhead/Perlator®.
Clean strainer ( d , 22).
, 22).
Clean strainer ( d
Check water pressure.
Check intlet temperature.
Check and if necessary replace control valve.
heating-system of unit, in order to avoid over-hea-
ting. Press reset button (13).
De-scale or replace element.
Check fuse (house installation).
Replace tubular heating element heating system (11).
www.stiebel-eltron.CoM
DHF 13 C3
compact
control control
182137 185708
230 230
8.8 6.6
13.2 13.2
2.5 2.5
3.7 3.7
4.5 4.5
0.05 0.05
3.7 3.7
0.6 0.6
x x
1 1
4.0 4.0
1 1
IP 24 IP 24
x x
G ½ G ½
x
x
0.14 0.45
x x
≤ 20 ≤ 20
≤ 2.5 ≤ 2.5
≤ 14 ≤ 14
x x
Rinse