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8
Technical data
All materials used have good thermic, electrical and mechanical
properties and offer the highest possible degree of corrosion
protection.
The screw-in heaters are made of a stainless steel cladding (Ø
6.5 mm, material 2.4858 / INCOLOY 825) with a highly
compressed insulating compound, in which a heating spiral is
embedded.
The screw head with G 1 ½" screw-in thread is made of stainless
steel (material 1.4301 / AISI 304).
The connection casing can be mounted in four different positions
(each with a 90° offset) after the screw-in thread has been
fastened.
Height of dust cap: 120 mm adjustment range of the temperature
selector:
Diameter of the dust cap 120 mm (without strain relief and pipe
union)
Screw-in heaters
Adjustable from 30°C to approx. 80°C, plus frost protection
position. The required flange seal is supplied.
Temperature controller (TC) with safety temperature limiter
(STL) according to DIN EN 60335-2-21
Frost-protection level 11 °C +/- 7K
Degree of protection IP54
The screw-in heater is tested up to a static pressure of approx.
10 bar. The maximum operating pressure must not exceed 10
bar.
CTHK 630 and CTHK 631:
For direct connection 1 ~ 230 Volt
CTHK 632 - CTHK 636:
For direct connection 3 ~ 400 Volt
Rated
Rated
Type
output
voltage
in KW
in V
CTHK 630
4.5
~230
CTHK 631
2.0
~230
CTHK 632
2.9
3~400
CTHK 633
4.5
3~400
CTHK 634
6.0
3~400
CTHK 635
7.5
3~400
CTHK 636
9.0
3~400
ATTENTION!
For electrical connection:
The CTHK 630 - 636 screw-in heaters are connected to the heat pump
manager via a contactor. To do this, please also refer to the heat pump
manager connection diagram.
Single-phase version
Three-phase version
Heating
Switching
Immersion
element
assembly 1
depth
quantity
in KW
in mm
1
4.5
1
2.0
3
2.9
3
4.5
3
6.0
3
7.5
3
9.0
Unheated
Installation
length
option
in mm
horizontally
400
95
x
250
95
x
250
95
x
350
110
x
450
110
x
550
110
x
650
110
x
DVGW
Connection
VDE
and KTW
thread
certification
certification
R 1 1/2"
x
x
R 1 1/2"
x
x
R 1 1/2"
x
x
R 1 1/2"
x
x
R 1 1/2"
x
x
R 1 1/2"
x
x
R 1 1/2"
x
x
8
E-7
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