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Startup/additional information
VI.
First start-up
Switch on the fuses.
Setting the temperature.
Starts rinsing: Open the warm water tap and allow 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 reduced
flow-rate, remove the perlator, shower head or similar before
start and repeat the process.
Remove the flow-rate limiter (see Fig. A) with low water
pressure.
Explain the operation of the continuous-flow heater to
the user.
Technical data
Rated output
Rated voltage
Fuse protection
Minimum conductor cross-section
Warm water flow at rated output
with temperature increase from
12 °C to 38 °C
12 °C to 60 °C
Start-up flow
Start-up flow pressure *
Application area in water
specific electric resistance at 15 °C
Rated pressure
Maximum permissible supply temperature
Maximum mains impedance at connection point [Ω]
* The pressure loss on the mixer must also be added
Operation with prewarmed water (solar heated)
The continuous-flow heater can only heat prewarmed water
to a max. of 60 °C. If the cold water supply exceeds a tem-
perature of 55 °C, the water will not be warmed any further.
en
If the continuous-flow heater does not have sufficient
A
water flow due to low water line pressure in your do-
mestic plumbing system, remove the flow-rate
limiter.
Priority circuit for the combination with electrical stor-
B
age heaters:
For operation with a priority circuit, a special load
shedding relay BZ 45L20 (special accessory) is re-
quired. Other existing load shedding relays, with the
exception of electronic load shedding relays, may
malfunction.
The control electronics must be coded when operated
C
with a load shedding relay.
The filter upstream from the check valve in the cold
D
water supply inlet is clogged.
Remove the filter and either clean it or descale it.
See Figure D 1–3.
DE 1821515
DE 5151821
18
[kW]
21
[V]
400
[A]
32
[mm
2
]
4
9.9
[l/min]
11.6
5.4
[l/min]
6.3
[l/min]
2.6
[MPa (bar)]
0.025 (0.25)
[Ωcm]
≥ 1 300
[MPa (bar)]
1.0 (10.0)
[°C]
55
≤ 0.44
Important: The cold water supply temperature must not be
higher than 55 °!
If the cold water supply exceeds a temperature of 60 °C, a
circuit breaker will trigger and shut the appliance off. There-
fore, the residential plumbing must be equipped with a ther-
mostatic premixer (e. g. special accessory BZ 45T20) that will
limit the cold water supply temperature to a max. of 55 ° by
appropriately mixing in cold water.
DE 2427515
DE 5152427
24
27
400
40
6
13.2
13.9
7.2
7.6
2.6
0.025 (0.25)
≥ 1 300
1.0 (10.0)
55
≤ 0.244
9
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