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8. Technical data - electrical fitted heaters
Flange diameter 180mm (REU 18, RDU 18, RSW 18, RUL 18) – splash- proof version. Flange diameter
240mm (RDW 2, RSW 2) – drip-proof version.
Height of the protection cover: 150 mm
Infinitely variable temperature controller, setting range from 40° C to approximately 85° C as well as frost protection
setting. The flange gasket is enclosed.
REU:
Single-phase version for direct connection ~ 230 Volt
RDU:
Three-phase version for direct connection 3 ~ 400 Volt
RSW:
For horizontal installation, three-phase version for contactor control.
RUL:
For horizontal tanks with central flange, reconnectable version for direct connection.
RDW:
Only for horizontal installation, three-phase version for direct connection,
reconnectable heater ratings.
RSW:
Only for horizontal installation, three-phase version for contactor control 3 ~ 400 Volt,
reconnectable heater ratings.
No-
Nominal
minal
voltage
output
Type
V
kW
REU 18-1,7
1,7
~230
REU 18-2,0
2,0
~230
REU 18-2,5
2,5
~230
REU 18-3,3
3,3
~230
RDU 18-2,5
2,5
3~400
RDU 18-3,0
3,0
3~400
RDU 18-3,8
3,8
3~400
RDU 18-5,0
5,0
3~400
RDU 18-6,0
6,0
3~400
RDW 18-7,5
7,5
3~400
RDW 18-10,0
9,9
3~400
RSW 18-12,0
12,0
3~400
RSW 18-15,0
15,0
3~400
RUL 18-2,5
2,0
~230
reconnectab-
2,65
~230
le to...
4,1
3~400
4,65
3N~400
RDW 2-9 U
6,0
3~400
reconnectab-
7,5
3~400
le to...
9,0
3~400
RSW 2-24 U
12,0
3~400
reconnectab-
16,0
3~400
le to...
24,0
3~400
RSW 2-45 U
20,0
3~400
econnectab-
30,0
3~400
le to...
35,0
3~400
45,0
3~400
Table for the determination of the connected load (kW, fitted heater type) to heat the tank water from 10° C to 85° C
(reduction factor if tank water is to be heated from 10° C to 65° C: multiply value give in the table by 0.73). Flange tube
at the lowest point of the boiler.
Aufheiz-
zeit
150l
h
kW
R...Type
kW
8
1,7
REU 18-1,7
2,3
REU 18-2,5
6
2,3
3,1
RDU 18-2,5
4
3,4
RDU 18-3,8
4,6
3 1/3
4,1
RDU 18-5,0
5,5
Please note for electrical connection: The fitted heater types REU, RDU, RUL, RDW can be connected directly to
the mains. For the fitted heater types RSW, there needs to be a contactor in the distributor so that the temperature
sensor installed in the fitted hea-ter is able to switch the voltage for the heating elements via a control line.
Connection
Switching group
Number
of
via
1
2
heating
external
ele-
direct
contrac-
ments
tor
kW
kW
x
-
1
1,7
-
x
-
1
2,0
-
x
-
1
2,5
-
x
-
1
3,3
-
x
-
3
2,5
-
x
-
3
3,0
-
x
-
3
3,8
-
x
-
3
5,0
-
x
-
3
6,0
-
x
-
3
7,5
-
x
-
3
9,9
-
-
x
3
12
-
-
x
3
15
-
x
-
3
2
-
x
-
3
2,65
-
x
-
3
4,1
-
x
-
3
4,65
-
x
-
6
6
-
x
-
6
7,5
-
x
-
6
9
-
-
x
6
12
-
-
x
6
12
4
-
x
6
12
12
-
x
9
15
-
-
x
9
15
15
-
x
9
15
15
-
x
9
15
15
aufzuheizender Behälterinhalt
200l
250l
R...Type
kW
R...Type
kW
REU 18-2,5
REU 18-3,3
2,9
3,5
RDU 18-2,5
RDU 18-3,0
REU 18-3,3
3,9
RDU 18-3,8
4,6
RDU 18-3,0
RDU 18-5,0
5,7
RDU 18-6,0
6,8
RDU 18-6
6,8
RDW 18-7,5
8,2
Installation options
Ins-
talled
length
3
vertical
hori-
from
zontal
below
mm
kW
-
450
x
x
-
450
x
x
-
450
x
x
-
450
x
x
-
450
x
x
-
450
x
x
-
450
x
x
-
450
x
x
-
450
x
x
-
450
x
-
450
x
-
530
x
-
-
630
x
-
-
500
x
-
-
500
x
-
-
500
x
-
-
500
x
-
-
450
x
-
-
450
x
-
-
450
x
-
-
530
x
-
-
530
x
-
-
530
x
-
5
630
x
-
-
630
x
-
5
630
x
-
15
630
x
-
300l
500l
R...Type
kW
R...Type
kW
RDU 18-3,8
5,7
RDW 18-6,0
9,1
RDU 18-5,0
7,5
RDW 18-7,5
11,7
RDW 18-7,5
11,3
RSW 18-12,0
18,1
RDW 18-10,0
13,6
RSW 18-15,0
21,8
Flange
Mark of
diame-
confirmity
ter
in
horizon-
tal tank
only
mm
OVE
VDE
-
180
x
x
-
180
x
x
-
180
x
x
-
180
x
x
-
180
x
x
-
180
x
x
-
180
x
x
-
180
x
x
-
180
x
x
-
180
x
x
-
180
x
x
-
180
x
x
-
180
x
x
x
180
x
x
180
x
x
180
x
x
180
x
-
240
x
-
240
x
-
240
x
-
240
x
-
240
x
-
240
x
-
240
x
-
240
x
-
240
x
-
240
x
800l
1000l
R...Type
kW
R...Type
RDW 2-9 U
11,5
RSW 2-24 U
RSW 2-24 U
15,1
RSW 2-24 U
RSW 2-45 U
22,7
RSW 2-24 U
RSW 2-24 U
27,2
RSW 2-45 U
| 33
Id.Nr.: 182568-13
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