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Instruction for Use | HCA 56x and 8x8
7. Installation
7.1 Introduction
To guarantee the proper functioning of the heat cost allocator 565 / 566 / 868 / 878, it is of great
importance that it is installed by an expert. On one hand, a constant heat transfer between radi-
ator and heat cost allocator has to be guaranteed. On the other hand, the installation of the heat
cost allocators on a large variety of radiator types should be as easy as possible.
The installation can be carried out in two different ways.
The standard device is installed directly on the radiator.
For the wall-mounted version the remote sensor is installed on the radiator and the
heat cost allocator is wall-mounted.
For the installation of the heat cost allocators, special fastening-parts kits are available. To avoid
faulty installation, we also recommend reading the Kc-data in the data base prior to the instal-
lation.
The heat cost allocator is an electronic device which – like all other similar devices – has to be
handled with care. It is sensible to electric discharge and contacting certain areas of the PCB.
Electric discharge can destroy the device or – even worse - damage it in a way that it fails after
an indefinite period of time.
For this reason it is essential in any case to avoid contact with the PCB.
7.2 DIN Standard Requirements for the Installation
Heat cost allocators can be installed in heating systems where the mean temperature is
between the upper operating temperature limit tmax and the lower operating temperature
limit tmin (tmax and tmin are stated in the technical data, see chapter 11 Technical data).
The installation of the devices has to be durable and avoid manipulations.
The devices have to be installed in a place where sufficient correlation between the
displayed value and the heat output of the radiator is given over a maximum operating
range.
Within a billing unit (in case of pre-distribution of the energy consumption: within a users’
group) only heat cost allocators of the same manufacturer and the same type with identical
rating systems may be used. Each device type has to be identifiable as such.
7.3 General Restrictions
Electronic heat cost allocators cannot be used with steam heating, floor heating, ceiling radiant
heaters, flap-controlled radiators and electrical radiator.
In case of combined valve- and flap-controlled radiators, the installation of an electronic heat
cost allocator is only permitted if the flap control is dismounted or maintained in position
„open“.
Convector heaters where the performance can be altered by an electric blower as well as heat
towel racks with an electric heating cartridge may only be equipped with an electronic heat
cost allocator if the additional electric attachments are dismounted or shut down.
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