Technical data
7
TR8500 – 6 720 876 028 (2017/07)
4 Technical data
* Larger cable cross-sections may be required depending on the connection configuration.
** The pressure loss on the mixer must also be added.
Solar heated
The appliance 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.
Important: The cold water supply temperature must not be higher
than 55 °C!
If the cold water supply exceeds a temperature of 60 °C, a circuit breaker
will trigger and shut the appliance off. Therefore, 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.
Dimensions (Fig. 9)
5 Special accessories
• Pipe kit BZ 45U20 for use of the appliance as an undersink appliance
• Priority switch (load shedding relay) BZ 45L21: for operation with
a priority circuit
• Mounting kit BZ 45K23: for surface mount installation
• Thermostatic premixer BZ 45T20: for installation in the domestic
plumbing when using preheated water
6 Environmentally-friendly disposal
Subject to change without notice.
15/18 DESOAB 21/24 DESOAB 24/27 DESOAB
Rated output [kW] 15/18 21/24 24/27
Rated voltage [V] 400 400 400
Fuse protection [A] 25/32 32/40 40
Minimum conductor cross-section * [mm
2
] 2.5/4 4 6
Warm water flow at rated output
with temperature increase from
12 °C to 38 °C (without flow-rate limiter)
12 °C to 38 °C (with flow-rate limiter)
12 °C to 60 °C
[l/min]
[l/min]
[l/min]
8.1/9.8
6.5
4.4/5.3
11.6/13.0
8.7
6.2/7.1
13.0/14.6
9.3
7.1/7.9
Start-up flow [l/min] 2.5 2.5 2.5
Start-up flow pressure ** [MPa (bar)] 0.009 (0.09) 0.009 (0.09) 0.009 (0.09)
Application area in water
specific electric resistance at 15 °C
[Ωcm] ≥ 1 300 ≥ 1 300 ≥ 1 300
Rated pressure [MPa (bar)] 1.0 (10) 1.0 (10) 1.0 (10)
Maximum permissible supply temperature [°C] 60 60 60
Maximum mains impedance at connection point [Ω] 0.067/0.104 0.067/0.104 0.067/0.104
Energy efficiency class A A A
Load profile SSS
Annual energy consumption [kWh] 478 479 479
Daily energy consumption [kWh] 2.199 2.204 2.207
Sound power level [dB] 15 15 15
Hot water heating energy efficiency [%] 38.6 38.5 38.5
This appliance is labelled in accordance with European
Directive 2012/19/EU concerning used electrical and
electronic appliances (waste electrical and electronic
equipment – WEEE).
The guideline determines the framework for the return
and recycling of used appliances as applicable
throughout the EU.
Please ask your specialist retailer about current
disposal facilities.
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