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Spe c ific a tio n s
Rated power
Rated voltage
Fuse protection
Minimum conductor cross-section
Warm Water Quantity at Rated Power
for temperature increases of:
12 °C to 38 °C
12 °C to 60 °C
Switch-on quantity
Switch-on flow pressure*
Flow pressure (at rated power and 60 °C)*
With flow limiter
Without flow limiter
Operative range in waters of
specific electric resistance at 15 °C
Rated pressure
Maximum permissible supply temperature
Maximum mains impedance
at connection site
* Plus any pressure loss at the tap mixer
Operation with prewarmed water (solar heated)
s
The continuous-flow heater can only heat prewarmed
water to a max. of 60 °C. If the cold water supply exceeds
a temperature of 55 °C, the water will not be warmed any
further.
236
20
100
EN
[kW]
[A]
2
[mm
]
[l/min]
[l/min]
[l/min]
[MPa (bar)]
[MPa (bar)]
[MPa (bar)]
[Ωcm]
[MPa (bar)]
[°C]
[Ω]
Important: The cold water supply temperature must not
be higher than 55 °C!
s
Special accessories
139
s
s
s
s
G
1 2
A
152
18
21
380 – 415 V
380 – 415 V
32
32
4
9.9
11.6
5.4
6.3
2.6
2.6
0.025 (0.25)
0.025 (0.25)
0.028 (0.28)
0.035 (0.35)
0.013 (0.13)
0.020 (0.20)
≥ 1300
≥ 1300
1 (10)
1 (10)
55
55
≤ 0.44
–
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
thermostatic premixer (e.g. special accessory BZ 45T20)
that will limit the cold water supply temperature to a max.
of 55 °C by appropriately mixing in cold water.
BZ 45U20 Pipe set: When using the continuous-flow
heater as a built-under appliance.
Priority switch (load reducing relay) BZ 45L20:
For operation with the priority circuit.
BZ 45K22 Mounting set: For surface-mount installation.
Thermostat pre-mixer BZ 45T20: For mounting in the
house installation when using pre-warmed water.
24
380 – 415 V
35
4
6
13.2
7.2
2.6
0.025 (0.25)
0.048 (0.48)
0.026 (0.26)
≥ 1300
1 (10)
55
≤ 0.36
5
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