8
ATEX Directive
The equipment does not have its own potential
ignition source and is not subject to this directive
(see "Manufacturer's Declaration" section).
When installed, static electricity may arise between
the equipment and the connected system.
When used in potentially explosive atmospheres,
the plant manufacturer or plant operator is
responsible for discharging or preventing possible
static charge.
If it is possible for medium to escape, e.g. through
actuating mechanisms or leaks in threaded joints,
the plant manufacturer or plant operator must take
this into consideration when dividing the area into
zones.
Purpose and function
Purpose
The equipment regulates and controls distribution
processes in industrial heating systems. As the fluid
temperature falls the equipment increases the fluid
flow in the return line. The fluid will only flow off if
its temperature is below the closing temperature.
Consequently, the flowrate, pressure and
temperature of the fluid are maintained at a fairly
constant level and heat loss is minimized.
The closing temperature is set at our factory. You
can change these default settings within the
adjustable temperature range. For more information
see chapter
“Adjusting the closing temperature“
on
page 10.
Function
The equipment regulates the flow of the fluid by
means of a Thermovit regulator and the force of a
spring.
As the fluid temperature falls the orifice opens.
More fluid can flow through. As the fluid
temperature rises the orifice of the Thermovit
regulator closes. Less fluid can flow through.
The orifice always remains slightly open,thereby
allowing a small flowrate ("bleed flow") to pass
through. The Thermovit regulator is therefore
always surrounded by fluid and can react
instantaneously if the temperature changes.
Storing and transporting the
equipment
Attention!
Equipment can be damaged if stored or
transported improperly.
Close all openings with the sealing
plugs or covers supplied with the
equipment or use similar sealing
covers.
Protect the equipment against
moisture and corrosive atmospheres.
Please contact the manufacturer if the
specified transport and/or storage
requirements cannot be met.
Storing the equipment
Please observe the following items when storing the
equipment:
Do not store the equipment for more than 12
months.
Use the supplied sealing plugs or other suitable
seal caps in order to seal off all openings and
make the equipment watertight.
Protect the sealing surfaces and contact areas
against mechanical damage.
Protect the equipment and all components
against hard shocks and impacts.
Store the equipment only in closed rooms that
meet the following environmental conditions:
Air humidity below 50 %, not condensing
Indoor air: clean, salt-free and non-corrosive
Temperature 5–40 °C.
Make sure that all these requirements are
always met when storing the equipment.
Please contact the manufacturer if you cannot
comply with the recommended storage
conditions.
