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| English
9 000 813 417 | (17.9.12)
Robert Bosch Hausgeräte GmbH
Startup/additional information
(Figure VI)
The device is compliant to IEC 61000-3-12.
First start-up
Switch on the fuses.
w
Setting the temperature.
w
Starts rinsing: Open the warm water tap and allow
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water to flow for at least 1 minute (flow-rate at least
6 litres per minute). Only then (for safety reasons)
will the appliance begin to heat.
Tip:
Should the appliance not start because of a re-
duced flow-rate, remove the perlator, shower head or
similar before start and repeat the process.
Remove the flow-rate limiter
w
(Figure A)
with low
water pressure.
Explain the operation of the continuous-flow heater to
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the user.
If the continuous-flow heater does not have sufficient
w
water flow due to low water line pressure in your do-
mestic plumbing system, remove the flow-rate limiter
(Figure A)
.
Priority circuit for the combination with electrical
storage heaters
(Figure B)
:
For operation with a priority circuit, a special load shed-
ding relay BZ 45L20 (special accessory) is required.
Other existing load shedding relays, with the exception
of electronic load shedding relays, may malfunction.
The control electronics must be coded when operated
with a load shedding relay
(Figure C)
.
Status display on the appliance
(Figure D)
LED
Appliance status
Off
Off
Lights up
Ready
Slow flash (1/s)
Appliance is heating
Fast flash (4/s)
Desired water tempera-
ture is not reached (water
flow too high for appli-
ance rating).
Technical data
RDE 1821415
Rated output
kW
18
21
Rated voltage
V
400
Fuse protection
A
32
Minimum conductor cross-section
mm
2
4
Warm water flow at rated output
with temperature increase from
12 °C to 38 °C
l/min
9.9
11.6
12 °C to 60 °C
l/min
5.4
6.3
Start-up flow
l/min
2.6
Start-up flow pressure *
MPa (bar)
0.025 (0.25)
Application area in water
specific electric resistance at 15 °C
Ωcm
≥ 1 300
Rated pressure
MPa (bar)
1.0 (10.0)
Maximum permissible supply temperature
°C
55
Maximum mains impedance at connection point
Ω
≤ 0.244
* The pressure loss on the mixer must also be added
