Stiebel Eltron DHB-E 13 SLi [12/44] Operating instructions
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Stiebel Eltron DHB-E 13 SLi [12/44] Operating instructions

Stiebel Eltron DHB-E 13 SLi [12/44] Operating instructions
12
1.1 Equipment description
The instantaneous water heater DHB-E ... Si
electronic heats water as it flows through the
equipment. The hot-water outlet temperature
is infinitely adjustable between approx. 30 °C
and 60 °C via the temperature selector. From
a flow rate of approx. 3 l/m upwards, the
control regulates the correct heating output,
subject to the temperature selected and the
cold-water temperature.
1.2 Vital facts
Temperature selector
Turning the selector allows you to choose
the required temperature anywhere along
its scale.
If the draw-off valve is fully opened and
the temperature selector has been set to
maximum (temperature selector turned
fully clockwise), but the outlet temperatu
-
re fails to reach the required temperature,
there may be more water flowing through
the equipment than can be heated by the
internal heater cartridge (output limit 18,
21, 24 or 27 kW). In such cases, reduce
the flow rate at the draw-off valve accor
-
dingly.
There is a risk of scalding with outlet tem
-
peratures in excess of 43 °C.
1.3 Safety instruction
Water temperatures in excess of
60 °C can be reached when selec
-
ting the temperature at the draw-off valve.
Therefore keep small children away from
the draw-off valves.
Danger of scalding!
1. Operating instructions
for users and contractors
1.4 Important information
If the water supply to the
DHB-E ... Si electronic has been
interrupted, e.g. because of a risk of frost,
or work on the water pipe, the following
measures must be taken prior to bringing
the appliance back into use:
1. Remove the fuses and/or trip the MCBs.
2. Open a draw-off valve downstream of
the equipment until all air has been pur-
ged from the cold water supply line and
the equipment.
3. Replace of switch on fuses again.
1.5 Hot water output
Cold water temperatures vary depending on
the time of year. The following maximum out
-
put volumes, or mixed water volumes, can be
achieved with these different cold water inlet
temperatures (see Table 1):
ϑ
1
= Cold water inlet temperature
ϑ
2
= Mixing water temperature
ϑ
3
= Output temperature.
• Useful temperature:
– approx. 38 °C: For example, for showers,
hand basins, filling baths, etc.
– approx. 60 °C: For dishwashers and when
using thermostatic fittings.
ϑ
2
= 38 °C (Mixing water temperature)
18 kW 21 kW 24 kW 27 kW
ϑ
1
l/min *
6 °C 8,0 9,4 10,7 12,1
10 °C 9,2 10,7 12,3
13,8
14 °C 10,7 12,5 14,5 16,1
ϑ
3
= 60 °C (Output temperature)
18 kW 21 kW 24 kW 27 kW
ϑ
1
l/min *
6 °C 4,8 5,6 6,4 7,2
10 °C 5,2 6,0 6,9 7,7
14 °C 5,6 6,5 7,5
8,4
Table 1
* The values in this table relate to a supply
voltage of 400 V. The actual outlet volume is
subject to the available supply pressure and
mains voltage.
1.6 Recommended adjust-
ment, thermostatic valve
To safeguard the function of the thermo
-
static valve, set the DHB-E ... Si electronic
to
maximum temperature (turn the temperature
selector fully clockwise).
1.7
First actions to be taken
in the event of malfunction
• Check the fuses.
• Check the fittings and shower heads for
lime scale blockage or dirt accumulation.
See also ”6. Fault finding by the user”.
1.8 Maintenance and care
Maintenance work, such as for exam-
ple checking the electrical safety, may
only be carried out by a qualified installer.
A damp cloth is sufficient for care of the unit.
Do not use any abrasive or corrosive cleaning
agents.
1.9 Operating and installa-
tion instructions
Keep these instructions carefully and
pass them on to your successor in
the event of a change in ownership, in the
event of maintenance and possible repair
work they should be passed to the qualified
installer for his attention.

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1 Operating instructions for users and contractors 1 1 Equipment description The instantaneous water heater DHB E Si electronic heats water as it flows through the equipment The hot water outlet temperature is infinitely adjustable between approx 30 C and 60 C via the temperature selector From a flow rate of approx 3 l m upwards the control regulates the correct heating output subject to the temperature selected and the cold water temperature 1 2 Vital facts 1 4 Important information If the water supply to the DHB E Si electronic has been interrupted e g because of a risk of frost or work on the water pipe the following measures must be taken prior to bringing the appliance back into use 1 Remove the fuses and or trip the MCBs 2 Open a draw off valve downstream of the equipment until all air has been pur ged from the cold water supply line and the equipment 3 Replace of switch on fuses again Temperature selector Turning the selector allows you to choose the required temperature anywhere along its scale If the draw off valve is fully opened and the temperature selector has been set to maximum temperature selector turned fully clockwise but the outlet temperatu re fails to reach the required temperature there may be more water flowing through the equipment than can be heated by the internal heater cartridge output limit 18 21 24 or 27 kW In such cases reduce the flow rate at the draw off valve accor dingly There is a risk of scalding with outlet tem peratures in excess of 43 C 1 3 Safety instruction Zk Water temperatures in excess of 60 C can be reached when selec ting the temperature at the draw off valve Therefore keep small children away from the draw off valves Danger of scalding 1 5 Hot water output Cold water temperatures vary depending on the time of year The following maximum out put volumes or m ixed water volumes can be achieved with these different cold water inlet temperatures seeTable 1 8 Cold water inlet temperature 2 Mixing water temperature Output temperature Useful temperature approx 38 C For example for showers hand basins filling baths etc approx 60 C For dishwashers and when using thermostatic fittings Э2 38 C Mixing watertemperature 6 C 10 C 14 C 18 kW l m in 8 0 9 2 10 7 21 kW 24 kW 27 kW 9 4 10 7 12 5 10 7 12 3 14 5 12 1 13 8 16 1 33 60 C Output temperature 6 C 10 C 18 kW l m in 4 8 5 2 21 kW 24 kW 27 kW 5 6 6 0 6 4 6 9 7 2 7 7 Table 1 The values in this table relate to a supply voltage of 400 V The actual outlet volume is subject to the available supp ly pressure and mains voltage 12 1 6 Recommended adjust ment thermostatic valve To safeguard the function ofthe thermo static valve set the DHB E Si electronic to maximum temperature turn the temperature selector fully clockwise 1 7 First actions to be taken in the event of malfunction Check the fuses Check the fittings and shower heads for lime scale blockage or dirt accumulation See also 6 Fault finding by the user 1 8 Maintenance and care XX Maintenance work such as for exam I pie checking the electrical safety may only be carried out by a qualified installer A damp cloth is sufficient for care ofthe unit Do not use any abrasive or corrosive cleaning agents 1 9 Operating and installa tion instructions ZV Keep these instructions carefully and I pass them on to your successor in the event of a change in ownership in the event of maintenance and possible repair work they should be passed to the qualified installer for his attention

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