Operating instructions

13
912.808.1 - IT
INSTALLATION AND OPERATING MANUAL
Models R/1
These models are tted with a balancing valve (gure 5). This device is used to balance the ow 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.
Models RS
These models are tted with two balancing devices.
The rst device (balancing valve: Figure 5) is used to balance the ow of water circulating in the single module in case of
non-optimal distribution in the inlet pipes. With this device, the flow rate must not fall below 1000 l/h in the domestic
water mode (lower ow rates do not assure sufcient domestic water performance).
The second device (positioned in the brass hydraulic body: Figure 6) must be used if a further pressure drop increase is
required (this device only acts on the heating circuit and does not affect domestic water ow).
The circulating ow rate value is shown on the heat meter display (see §17).
Figure 4 shows the Flow Rate – Pressure Drop curve with balancing valve in the wide open position.
Items in the SIRIUS SAT user module pack.
r 4DSFXTBOEFYQBOTJPOHSJQTNN
r 5BQ(cuVTFSNPEVMFJOMFU
r 5BQ(cuSFUVSOUPDFOUSBMJTFEQMBOU
r 5BQ(cuIFBUJOHQMBOUEFMJWFSZGPSEVBM[POFNPEFMT
r 5BQ(cuIFBUJOHQMBOUSFUVSOGPSEVBM[POFNPEFMT
r 5BQ(cuEPNFTUJDXBUFSJOMFUNPEFMTXJUIEPNFTUJDIPUXBUFSQSPEVDUJPO
r 5BQ(cuEPNFTUJDIPUXBUFSPVUMFUNPEFMTXJUIEPNFTUJDIPUXBUFSQSPEVDUJPO
r 4FBMT
r 5FMFTDPQJDKPJOUT
6. FLOW RATE/PRESSURE DROP CHARACTERISTICS (models without pump: R/1 – RS)
Figure 4: Flow Rate – Pressure Drop curves (models without Pump)
0902_0806
PRESSURE DROP IN HEATING CIRCUIT
WATER FLOW RATE (l/h)
PRESSURE DROP [kPa]