Sabiana Duck Strip 4.1 Instructions Pour L'installation, L'utilisation Et La Maintenance page 30

EN
25 HYDRAULIC CIRCUIT
Water parameters
Maximum permissible values for the water used in-
side a closed loop cooling or heating circuit.
Parameter
pH value (at 20°C)
Conductivity (at 20°C)
Oxygen content
Total hardness
Sulphur Ions
Sodium Ions
Iron Ions
Manganese Ions
Ammonia Ions
Chlorine Ions
Sulphate Ions
Nitrite Ions
Nitrate ions
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).
The "Standard" radiant panels can be supplied with
hot water at a maximum temperature of 120°C and
with a maximum hydraulic pressure of 10 bar.
"Special" panels can even be supplied with super-
heated water, up to 16 bar of hydraulic pressure.
Pay special attention to the choice of the mixing
valve serving the radiant panels.
In fact, in order to prevent problems due to the dif-
ferent 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 de-
signed 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
relevant Ø 3/8" threaded connection, to eliminate air
30
Unit
- -
- μS/cm
O2 mg/l
- °dH
S - not detectable
Na mg/l
+
Fe , Fe mg/l
2+ 3+
Mn mg/l
2+
NH mg/l
+
4
Cl mg/l
-
SO mg/l
2-
4
NO mg/l
-
2
NO mg/l
-
3
from the circuit and, on the outlet manifold, a tap for
draining the water.
Plug the other Ø 3/8" connections.
Value
26 CONNECTION DIAGRAMS
8-9
Example diagram of connection with manifold "B".
< 700
For the other connection diagrams, see chap. "Con-
< 0,1
nection diagrams".
1-15
MANIFOLD "B" - Compensated lines
< 100
< 0,1
< 0,05
< 0,1
< 100
< 50
< 50
< 50