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2 Safety notes
2.1 Correct use
Safety in operation is only guaranteed if the fitting is
used correctly.
The fitting "Multiflex FQ" with "Q-Tech" is used in
central heating and cooling systems (two pipe operation)
with closed circuits and circulation pump for automatic
flow control (hydronic balancing) at radiators with
integrated distributor with supply and return pipe
connection with a distance of 50 mm between the pipe
centres.
They are only suitable for operation with unpolluted,
non aggressive fluids (e.g. water or suitable water and
glycol mixtures according to VDI 2035 / ÖNORM 5195).
Any use of the fitting outside the above applications
will be considered as non-compliant and misuse.
Claims of any kind against the manufacturer and/or
his authorised representatives due to damages caused
by incorrect use cannot be accepted.
The observance of the installation and operating
instructions is part of the compliance terms.
2.2 P ossible dangers at the installation location
and during transport
The case of an external fire has not been taken into
consideration when constructing the fitting.
!
WARNING
Hot surfaces!
Risk of injury! Do not touch the fitting without safety
gloves. It may get very hot during operation.
Sharp edges!
Risk of injury! Only touch with safety gloves. Threads,
bore holes and edges are sharp.
3 Transport, storage and
packaging
3.1 Transport inspection
Upon receipt check delivery for any damages caused
during transit and for completeness.
Any damage must be reported immediately upon
receipt.
3.2 Storage
The fitting must only be stored under the following
conditions:
– Do not store in open air, keep dry and free from dust.
– Do not expose to aggressive fluids or heat sources.
– Protect from direct sunlight and mechanical agitation.
– Storage temperature: –20 °C up to +60 °C
– Max. relative humidity of air: 95 %
3.3 Packaging
Packaging material is to be disposed of in an
environmentally friendly manner.
4 Technical data
4.1 Performance data
Operating temperature t
Max. operating pressure p
Control range:
The set values are visible from outside (without
table).
Control range:
∆p max.:
∆p min. (10-130 l/h):
∆p min. (>130-170 l/h):
Below ∆p min., the set value is undercut depending
on the differential pressure.
Fluid:
Pipework connections:
Distance between
pipe centres:
!
DANGER
Suitable measures (e.g. safety valves) have to be
taken to ensure that the maximum operating
pressures and the maximum and minimum operating
temperatures are not exceeded or undercut.
: 2 °C up to 110 °C
s
: 1000 kPa (10 bar)
s
10 – 170 l/h
150 kPa (1.5 bar)
10 kPa (0.1 bar)
15 kPa (0.15 bar)
Water or suitable mixtures
of ethylene/propylene
glycol according to VDI
2035 / ÖNORM 5195 (max.
glycol proportion 50 %,
ph value 6.5 - 10).
Not suitable for steam or
o i l y ,
p o l l u t e d
aggressive fluids.
G
⁄
male thread
3
4
according to DIN EN
16313 (cone "Euro")
50 mm
a n d
7
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