Installation; Operation - oventrop Multidis SF Einbau- Und Betriebsanleitung

For filling and flushing the heating/cooling circuit, the
distributor/collector is equipped with fill and drain valves
with a connection for a DN 15 hose connection.
The installation can be bled during the filling process
and when the heating/cooling system is in operation via
the vent plug.
5.2. Application
The stainless steel distributors/collectors "Multidis SF"
allow a central distribution of the heating/cooling water
to the different circuits of each living zone. It is recom-
mended to equip the distributors/collectors with ball
valves (illustr. 4.3). They allow the isolation of the supply
and the return pipe, e.g. for maintenance work. Together
with the electrothermal actuators and room thermostats
which are available as accessories, the valve inserts M
30 x 1.5 in the return collector for subsequent conver-
sion to thermostatic operation can be used for individual
room temperature control. Hydronic balance is carried
out using the regulating inserts integrated in the flow
distributor.

6. Installation

6.1. Extent of supply
Upon receipt, check the delivery for completeness and
any transport damages.
6.2. Installation
The flow distributor and return collector are preassem-
bled and leak tested at works. Mount flow distributor
(top) and return collector (bottom) in the sound-absorb-
ing brackets (illustr. 4.1).
ATTENTION!
The flow distributor is always located in the bracket
at the top and the return collector in the bracket at
the bottom.
The ball valves 14064/6583 (DN 20) and 14064/6584
(DN 25 ) (with thermometer and red or blue T-handle) as
well as 1406383 (DN 20) and 140 63 64 (DN 25) (without
thermometer and with red T-handle) which are available
as accessories, are mounted with the help of the collar
nuts (G1 female thread with flat seals). The risers are
connected to the female threaded port of the ball valves,
e.g. by using the Oventrop "Combi-System":
• Composition pipe "Copipe"
• Press fittings "Cofit P"
• Screwed fittings "Cofit S"
The pipes have to be insulated against heat loss and for
soundproofing according to the valid rules, standards
and regulations.
The surface heating/cooling circuits are connected to
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the G ⁄ compression connections at the flow distributor
4
and return collector.
6.3. Floor construction
Regarding thermal and sound insulation, the floor con-
struction must comply with the valid rules, standards
and regulations.
6.4. Filling, bleeding, leak testing
The installation is filled up to the stainless steel distribu-
tor/collector "Multidis SF" at the open ball valves via the
risers. The vent plugs can be used for bleeding the sys-
tem even when the system is in operation.
The surface heating/cooling circuits are filled via the fill
and drain valves in front of the first heating/cooling cir-
cuit connection of the distributor/collector with the ball
valves being closed. The G
standard hose connections DN 15, e.g. Oventrop item
no. 103 45 52. The surface heating/cooling circuits are
flushed separately, so that the pipework is completely
filled with water.
3
⁄ connection is suitable for
4
ATTENTION!
Carry out leak test according to DIN EN 1264. The
test results must be recorded.
6.5. Incremental heating test
ATTENTION!
Incremental heating of concrete and anhydrite scre-
ed must be carried out according to DIN EN 1264-4.
Start incremental heating at the earliest:
• 21 days after having laid the concrete screed
• 7 days after having laid the anhydrite screed
Heat up slowly
• 3 days with a flow temperature of about 25°C, then
• 4 days with a flow temperature of about 55°C.
Flow temperature regulation only via the boiler control.
Open valve inserts of the stainless steel distributor/col-
lector "Multidis SF" with the help of the protection caps.
NOTE!
Other instructions of screed manufacturers have to
be observed
Before setting the system into operation, the valve
inserts of the return collector have to be equipped with
automatic controls for individual room temperature con-
trol. All Oventrop actuators and room thermostats, e.g.
electrothermal actuator, item no. 1012815 and room
thermostat, item no. 1152051, are suitable.
6.6. Initial operation
ATTENTION!
The flow temperature must be co-ordinated with the
surface heating/cooling system.
Near the heating pipes, the maximum permissible
screed temperatures according to DIN must not be
exceeded. In cooling systems, the temperature near the
cooling pipes must not reach the dew point. The general
instructions of the manufacturers must be observed.

7. Operation

7.1. Regulation
Hydronic balance of the heating/cooling system has to
be carried out between the various risers.
Regulation of the surface heating/cooling circuits is car-
ried out at the stainless steel distributor/collector "Multi-
dis SF".
7.2. Setting of the regulating inserts (illustr. 7.1)
Setting is carried out whilst the pump is in operation.
• Open black cap (1) with the help of a 5 mm spanner.
• Close valve stem (2) clockwise using the 5 mm span-
ner.
• Now open valve stem (2) anticlockwise according to
the calculated value of presetting (example: presetting
2.5 = 2.5 turns, design chart see page 8).
• Turn black setting screw (3) clockwise against the
valve stem (2) by using a 6 mm spanner.
• The set value can be restored easily if the surface
heating/cooling circuit is e.g. closed later using the
valve stem (2).
• Close cap (1) with the help of the 5 mm spanner.
• Repeat operation for all surface heating/cooling cir-
cuits.
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