Purpose; Description; Operating Range; Technical Data - Dimplex Rwt 750 Montage- Und Gebrauchsanweisung

1
ATTENTION!
This device is not intended for use by persons, including children, with
restricted physical, sensory or mental abilities or who lack the necessary
knowledge or experience, except under the supervision of a person
responsible for their safety or unless they have been instructed by this
person as to how the device is to be used. Children must be supervised
to ensure that they do not play with the device.
1

Purpose

With the installation of a finned tube heat exchanger, the tank
can (additionally) be heated indirectly by retrofitting this heat
exchanger into the existing blind flange.
A possible heating medium is the heat carrier fluid from a solar
energy system.
The heating circuit medium (frost-proof heat transfer medium)
flows from the solar energy system through the finned tube via
the loading pump. Free convection occurs on the finned outer
side of the tube.
The solar finned tube heat exchanger is normally installed
horizontally in the lower flange of the tank (buffer tank) and is
completely immersed in the water to be heated.
4

Technical data

Technical information
Heat exchanger surface area
Water content
Flow connection
Return connection
Operating pressure
Max. permissible operating pressure
Permissible operating temperature
Total length
Immersion depth
Max. diameter
Installation height
Flange diameter
Hole diameter
Net weight
Max. solar collector surface
E-2
2

Description

The solar heat exchanger is a spiral-shaped, coiled heat
exchanger consisting of a seamless rolled finned copper pipe
with soldered screw connections. The tube interior wall is
chemically tinned. For installation, the heat exchanger comes
with complete screw connections and is mounted to a flange
plate in the factory.
The matte black plastic cover (included in the scope of supply of
the combo tank) must be installed on the flange plate of the solar
heat exchanger to prevent heat loss.
3

Operating range

Around the heat exchangers: Boiler water
In the heat exchanger: Water or frost-proof heat transfer medium
Permissible internal operating pressure: 10 bar to a maximum of
20 bar
Permissible operating temperature: 120°C
(operating temperatures of 65°C should not be exceeded if the
water is very hard).
Unit RWT 750
m² 2.3
Litres 1.4
Inch
Inch
Bar
Bar
°C
mm 600
mm 570
mm
mm
mm
mm
kg 11.2
m² 15
RWT 900 RWT 1250
3.2 4.1
1.95 2.5
R 3/4
R 3/4
10
20
120
810 990
785 965
173
148
240
220/16 hole
12.4 14.6
30 40