Maintenance; General Conditions Of Sales And Delivery - oventrop Multidis SF Installation And Operating Instructions Manual

7.5 Setting of the regulating inserts ("Multidis SF" – 14055..)
Stainless steel distributors/collectors "Multidis SF" with regulating inserts item no. 1405552 to 1405562
Setting of the regulating inserts
closed
1. Open the black screw plug (1) with the help a 5 mm spanner.
2. Close the valve stem (2) by turning a 5 mm spanner clockwise.
3. Now open the valve stem (2) by turning it anticlockwise according to the calculated presetting value
(example: presetting 2.5 = 2.5 turns).
4. Turn the black setting screw (3) clockwise against the valve stem (2) by using a 6 mm spanner.
This way, the set value can easily be located again, if, for instance, the surface heating/cooling circuit is closed
later with the help of the valve stem (2).
5. Close the screw plug (1) with the help of the 5 mm spanner. Repeat operation for all surface heating/cooling
circuits.
Illustr. 7.3 Setting of the regulating inserts
7.6 Incremental heating test (only "Multidis SF")
NOTICE
- Incremental heating of concrete and calcium
sulphate screed has to be carried out
according to DIN EN 1264.
- The instructions of the screed manufacturers
have to be observed.
Start incremental heating at the earliest:
- 21 days after laying of concrete screed
- 7 days after laying of calcium sulphate screed
Heat up slowly with a flow temperature between
20 °C and 25 °C for at least 3 days, then at the maximum
design temperature for at least 4 days. The flow
temperature is controlled via the heat generator control.
Open the valve inserts of the stainless steel distributor/
collector "Multidis SF" with the help of the protection
caps.
Before setting the system into operation, the valve
inserts have to be equipped with automatic devices
for room temperature control.
7.7 Initial operation (only "Multidis SF")
NOTICE
The flow temperature must be co-ordinated
with the surface heating/cooling system.
16
regulated
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.
7.8 C orrection factors for mixtures of water and
The correction factors of the manufacturers of the
antifreeze liquids have to be considered when setting
the flow rate.

8 Maintenance

The stainless steel distributors/collectors "Multidis"
are maintenance-free.
Tightness and function of the distributors/collectors
and its connection points have to be checked regularly
during maintenance. The stainless steel distributors/
collectors "Multidis" must be easily accessible.
9 G eneral conditions of sales
Oventrops general conditions of sales and delivery
valid at the time of supply are applicable.
Turns
Mass flow q
glycol
and delivery
[kg/h]
m