Hydraulic Circuit; Connection Diagrams - Sabiana DS-ST18 Série Instructions Pour L'installation, L'utilisation Et L'entretien

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- ASSEMBLY WITH WELDING
Align the pipes of the head and intermediate elements,
check the clearance between the panels and clamp with
the pliers. Weld the pipes as per the numbered sequence.
Fit the connector cover plate as shown in the "assembly
with fittings" section.
bloccati
con pinze

- HYDRAULIC CIRCUIT

Water parameters
Maximum permissible values for the water used inside
a closed loop
cooling or heating circuit.
Parameter
pH value (a 20°C)
Conductivity (a 20°C)
Oxygen content
Total hardness
Sulphur Ions
Sodium Ions
Iron Ions
Manganese Ions
Ammonia Ions
Chlorine Ions
Sulphate Ions
Nitrite Ions
Nitrate ions
30
Unit Value
- - 8 - 9
- μS/cm < 700
O2 mg/l < 0,1
- °dH 1 - 15
not
S -
detectable
+
Na mg/l < 100
2+ ,
Fe
mg/l < 0,1
3+
Fe
2+
Mn mg/l < 0,05
+
NH mg/l < 0,1
4
-
Cl mg/l < 100
SO 2- mg/l < 50
4
-
NO mg/l < 50
2
-
NO mg/l < 50
3
In open circuits (for example when using well water), the
water used must be purified from suspended materials
by means of a filter which must be fitted on the inlet
(otherwise there is the risk of erosion by suspended
particles). It is also necessary to ensure that the unit is
protected from dust and other substances that cause
an acid or alkaline reaction when combined with water
(aluminium corrosion).
The "Standard" Duck Strip radiant panels can be supplied
with hot water at a maximum temperature of 120°C
and with a maximum hydraulic pressure of 10 bar. The
"Special" panels can even be supplied with superheated
water, up to 16 bar of hydraulic pressure.
Please note that, in the event of operation with superhe-
ated water, it is mandatory to fit the connections with
flanges and non-rubber seals.
NOTE: The "D" and "D+D" type manifolds are not suitable
for operation with superheated water or steam.
Special attention needs to be paid to the choice of the
mixing valve serving the radiant panels. In fact, in order to
prevent problems due to the different pipe-sheet metal
expansion, in the cold start phase and when changing
between the reduced temperature and the comfort
temperature, the flow water temperature can easily
reach 45°C without any limitation, beyond which it can
rise from 45°C up to 85°C, with an increase of 10°C every
3 minutes for radiant panels equipped with manifold
"B", and an increase of 10°C every 4 minutes for radiant
panels with manifold "D".
Provide hydraulic flow shut-off valves.
The supply pipes of the radiant panels must be designed
in order to absorb the movements created by thermal
expansions. If necessary, fit a dilator in the circuit.
Put a tap or a vent valve on the inlet manifold in the re-
levant Ø 3/8" threaded connection, to eliminate air from
the circuit and, on the outlet manifold, a tap for draining
the water. Plug the other Ø 3/8" connections.

- CONNECTION DIAGRAMS

Example diagram of connection with manifold "B".
For the other connection diagrams, see chap. "Connec-
tion diagrams".
MANIFOLD "B" - Compensated lines