Flow Rate/Pressure Drop Characteristics - Baxi Luna Sat RPZ-SP+2C Installation And Operating Manual

6. FLOW RATE/PRESSURE DROP CHARACTERISTICS OF THE PRIMARY CIRCUIT
This model is fitted with a balancing valve (figure 5). This device is used to balance the flow of water circulating in the
single module in case of non-optimal distribution in the inlet pipes. Figure 4 shows the Flow Rate - Pressure Drop curve
with balancing valve in the wide open position.
PRESSURE DROP IN PRIMARY CIRCUIT
WATER FLOW RATE (L/h)
Figure 4: Flow rate – Pressure drop curve
Figure 5 shows the Flow rate – Pressure drop curves with various positions of the adjustment screw "A". Curve 3 refers
to the screw in the almost totally closed position. The following curves indicate a partial aperture (see the corresponding
number of the curve with the position of the valve indicated to the side of the graph). Curve "1" represents the valve fully
open.
CHARACTERISTIC CURVE OF BALANCING VALVE
HEATING RETURN
BY-PASS
FLOW ADJUSTMENT
ADJUSTMENT
1
3 2
WATER FLOW RATE (L/h)
Figure 5: Detail of hydraulic assembly
INSTALLATION AND OPERATING MANUAL 7224230.02 - en
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