Operation - oventrop Multidis SFQ Installation And Operating Instructions For The Specialised Installer

The ball valves which are available as accessories (see
illustr. 4.3), are mounted with the help of the collar nuts
(G 1 female thread with flat seal). The risers are, for
instance, connected to the female threads of the ball
valves by use of the Oventrop "Combi-System":
– "Copipe" Composition pipe
– "Cofit P" Press fittings
– "Cofit PD" Press fittings
– "Cofit S" Screwed fittings
A thermal and sound insulation of the pipework
according to the valid rules, decrees, standards and
guidelines has to be carried out.
The surface heating/cooling circuits are connected to
the G ⁄ compression connections at the flow distributor
3
4
and return collector of the stainless steel distributor/
collector "Multidis SFQ".
Observe warning advice under paragraph 2
(safety notes)!
!
CAUTION
– Do not use any greasing agents or oil for
the installation, as these can destroy the
seals. Any dirt particles or grease or oil
residues must be flushed out of the
pipework before installation.
– When choosing the operating fluid, the
latest technical development has to be
considered (e.g. VDI 2035).
– A strainer must be installed in front of the
stainless steel distributor/collector
"Multidis SFQ".
– Please protect against external forces
(e.g. impacts, vibrations etc.).
After installation check all installation points for leaks.
6.3 Advice regarding protection cap
The inserts of the stainless steel distributor/collector
"Multidis SFQ" are supplied with a plastic protection
cap (illustr. 5.1, pos. 4). It protects the valve stem and
can be used for the manual setting of the valve lift
during the construction period.
1. Turn the protection cap clockwise to close the valve
insert and to reduce the heat supply.
2. Turn the protection cap anticlockwise to open the
valve insert and to increase the heat supply.
NOTICE
The protection cap must not be used for per-
manent shut-off of the valve insert against
system pressure (e.g. while the compression
fitting of a heating/cooling circuit is removed).

7 Operation

7.1 Floor construction
Regarding thermal and sound insulation, the floor
construction must comply with the valid rules, standards
and regulations.
7.2 Filling, bleeding, leak testing
Before initial operation, the installation has to be filled
and bled with due consideration of the permissible
operating pressures.
Bleeding during the filling process and even during
heating/cooling operation is carried out via the fill and
drain valves.
The surface heating/cooling circuits are filled via the
fill and drain valve at the end of the return collector
with the ball valves being closed and the valves inserts
being fully open at the highest presetting. To do so,
turn the handwheel (illustr. 5.1, pos. 3) to position 5
with the help of the presetting key (illustr. 5.1, pos. 5).
The G ¾ connection of the fill and drain valve is suitable
for standard DN 15 hoses.
Except for the first heating/cooling circuit to be filled,
the valve inserts "QM" of all surface heating/cooling
circuits have to be closed with the help of the protection
cap. Fill/flush each individual heating/cooling circuit,
one after another, with an unpolluted, non-aggressive
fluid (see 4.1) via the fill and drain valve at the return
collector.
NOTICE
Filling/flushing is carried out via the fill and
drain valve at the return collector through the
respective heating/cooling circuit to the fill
and drain valve at the flow distributor.
NOTICE
Carry out leakage test according to DIN EN
1264. The test results have to be recorded.
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